Optical lens, camera module and electronic device

Abstract

The application relates to the technical field of optical lenses, and provides an optical lens, a camera module and electronic equipment, which can solve the problem that the camera module occupies a large space and causes the thickness of the electronic equipment to be large in related technologies. The optical lens comprises a front lens group, a first turning element, a first rear lens group and a second rear lens group; the front lens group comprises a first front lens group and a second front lens group; when the first turning element is located at a first position, the first turning element is located on the image side of the first front lens group and is used for reflecting the outgoing light beam of the first front lens group to the first rear lens group, and the optical lens has a first effective focal length; when the first turning element is located at a second position, the first turning element is located on the image side of the second front lens group and is used for reflecting the outgoing light beam of the second front lens group to the first rear lens group, and the optical lens has a second effective focal length F2, and the second effective focal length is greater than the first effective focal length F1. The application can be used on electronic equipment such as mobile phones.

Description

[0001] This application claims priority to the Chinese Patent Application No. 202410224770.8, filed on February 28, 2024, and entitled "Motor, Camera Module and Electronic Device", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of optical lenses, and in particular to an optical lens, a camera module and an electronic device. BACKGROUND

[0003] At present, the camera module has become one of the important components of electronic devices such as mobile phones and tablet computers. Through the camera module of the electronic device, the desired photo can be easily obtained to meet the needs of people taking photos. With the electronic devices becoming more and more thin, it is necessary to save the space inside the electronic device while achieving high imaging performance of the camera module. Therefore, how to design the camera module to reduce the occupation of the internal space of the electronic device has become an important topic in the industry. SUMMARY

[0004] Embodiments of the present application provide an optical lens, a camera module and an electronic device, which are used to solve the problem of large space occupation of the camera module in the related art, which leads to a large thickness of the electronic device.

[0005] To achieve the above-mentioned purpose, embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, the embodiments of the present application provide an optical lens, comprising a front lens group G0, a first turning element, a first rear lens group G1 and a second rear lens group G2 arranged in an object side to an image side direction; the front lens group G0 comprises a first front lens group G01 and a second front lens group G02 arranged in a first direction, the first direction being parallel to an optical axis of the first rear lens group G1; the first turning element is movable between a first position and a second position along the first direction; when the first turning element is located at the first position, the first turning element is located on an image side of the first front lens group G01, and the first turning element is used to reflect an outgoing light beam of the first front lens group G01 to the first rear lens group G1, the optical lens having a first effective focal length F1; when the first turning element is located at the second position, the first turning element is located on an image side of the second front lens group G02, and the first turning element is used to reflect an outgoing light beam of the second front lens group G02 to the first rear lens group G1, the optical lens having a second effective focal length F2, the second effective focal length F2 being greater than the first effective focal length F1.

[0007] In this embodiment of the optical lens, by moving the first pivot element along the first direction, the first pivot element can be moved to the image side of the first front lens group G01 and the second front lens group G02 respectively. This can form an optical system with different effective focal lengths to achieve zoom capability of the optical lens. During the movement of the first pivot element along the first direction, no additional space is added in the light-gathering direction of the optical lens, which helps to reduce the space occupied by the camera module in the thickness direction of the electronic device, thereby contributing to the thinning and lightening of the electronic device.

[0008] In some embodiments of the first aspect, the travel distance L of the first turning element between the first position and the second position satisfies: L≤23mm. This setting avoids the travel distance L of the first turning element being too large, so that the actuator of the first turning element can be designed to be more compact, thereby making the structure of the camera module more compact.

[0009] In some embodiments of the first aspect, when the first turning element is in the first position, the first front lens group G01, the first turning element, the first rear lens group G1, and the second rear lens group G2 constitute a first optical system, and the total length of the first optical system is TTL1; when the first turning element is in the second position, the second front lens group G02, the first turning element, the first rear lens group G1, and the second rear lens group G2 constitute a second optical system, and the total length of the second optical system is TTL2; when the first turning element moves between the first position and the second position, the image plane position of the optical lens remains unchanged; TTL1 and TTL2 satisfy: TTL2-TTL1≤23mm. By reasonably setting the difference in the total length of the first optical system and the second optical system, the excessively large movement stroke L of the first turning element can be avoided, thus allowing the actuator of the first turning element to be designed more compactly, thereby making the structure of the camera module more compact.

[0010] In some embodiments of the first aspect, the effective focal length f of the first front lens group G01 g01 The effective focal length f of the second front lens group G02 g02 and the effective focal length f of the first rear lens group G1 g1 Satisfy: TTL2 - TTL1 = |f g02 -f g01 +k·f g1 |; where k satisfies: 0≤|k|<1. This setting can avoid the first turning element's travel distance L being too large, thereby making the camera module structure more compact and reducing the space occupied by the camera module.

[0011] In some embodiments of the first aspect, the effective focal length f of the first front lens group G01 g01 The effective focal length f of the second front lens group G02g02 , a combined focal length f of the first front lens group G01 and the first rear lens group G1 g011 , a combined focal length f of the second front lens group G02 and the first rear lens group G1 g021 satisfies: k = [(β1-1) 2 / β1] - [(β2-1) 2 / β2]; β1 = f g011 / f g01 ; β2 = f g021 / f g02 . In this way, by reasonably setting the size of the first focal length distribution ratio β1 and the second focal length distribution ratio β2, the size of the coefficient k can be controlled, and then the size of the moving stroke L of the first turning element can be controlled.

[0012] In some embodiments of the first aspect, k satisfies: 0.28 ≤ k ≤ 0.46. In this way, the occupied space of the camera module can be reduced, and the cost of the camera module can be reduced.

[0013] In some embodiments of the first aspect, k = 0. In this way, by reasonably setting the difference between the effective focal length f g01 of the first front lens group G01 and the effective focal length f g02 of the second front lens group G02, the size of the moving stroke L of the first turning element can be controlled.

[0014] In some embodiments of the first aspect, k is approximately equal to 0, that is, 0 < k ≤ 0.005. In this way, by reasonably setting the difference between the effective focal length f g01 of the first front lens group G01 and the effective focal length f g02 of the second front lens group G02, the size of the moving stroke L of the first turning element can be controlled.

[0015] In some embodiments of the first aspect, the effective focal length f g01 of the first front lens group G01 and the effective focal length f g02 of the second front lens group G02 satisfy: 4.5 mm ≤ |f g02 -f g01 | ≤ 12.9 mm. In this way, the occupied space of the camera module can be reduced, and the cost of the camera module can be reduced.

[0016] In some embodiments of the first aspect, TTL1 and TTL2 satisfy: TTL2-TTL1 ≥ 8.1 mm. In this way, the difference between the effective focal lengths of the first optical system and the second optical system can be avoided to be small, thereby facilitating to improve the zoom ratio (or zoom range) of the optical lens.

[0017] In some embodiments of the first aspect, the effective focal length f g02 greater than the effective focal length f g01 In this way, the optical lens can have a larger zoom range, thereby improving the zoom performance of the optical lens.

[0018] In some embodiments of the first aspect, the object side of the first turning element is provided with a light shielding device, the light shielding device is configured to shield the light beams towards the image side of the second front lens group G02 when the first turning element is located at the first position, and the light shielding device is configured to shield the light beams towards the image side of the first front lens group G01 when the first turning element is located at the second position. In this way, stray light can be avoided to affect the imaging quality of the optical lens.

[0019] In some embodiments of the first aspect, the light shielding device comprises a first variable aperture stop and a second variable aperture stop, the first variable aperture stop is arranged on the object side or the image side of the first front lens group G01, and the second variable aperture stop is arranged on the object side or the image side of the second front lens group G02. In this way, the light shielding device can accurately control the light quantity of the optical lens when the first turning element is located at the first position or the second position, thereby improving the imaging quality of the optical lens.

[0020] In some embodiments of the first aspect, the light shielding device comprises a first variable aperture stop and a second variable aperture stop, the first variable aperture stop is arranged between the lenses of the first front lens group G01, and the second variable aperture stop is arranged between the lenses of the second front lens group G02. In this way, the light shielding device can accurately control the light quantity of the optical lens when the first turning element is located at the first position or the second position, thereby improving the imaging quality of the optical lens.

[0021] In some embodiments of the first aspect, the light shielding device comprises a shielding plate, the shielding plate is arranged on the image side of the front lens group G0 and is movable relative to the front lens group G0, the shielding plate is moved to the image side of the second front lens group G02 when the first turning element is located at the first position, and the shielding plate is moved to the image side of the first front lens group G01 when the first turning element is located at the second position. In this way, the structure of the light shielding device can be simplified, thereby reducing the cost of the optical lens.

[0022] In some embodiments of the first aspect, the light shielding device comprises a shielding plate, the shielding plate is arranged on the object side of the front lens group G0 and is movable relative to the front lens group G0, the shielding plate is moved to the object side of the second front lens group G02 when the first turning element is located at the first position, and the shielding plate is moved to the object side of the first front lens group G01 when the first turning element is located at the second position. In this way, the structure of the light shielding device can be simplified, thereby reducing the cost of the optical lens.

[0023] In some embodiments of the first aspect, the first rear lens group G1 is a movable lens group and is movable relative to the front lens group GO along the first direction, and the second rear lens group G2 is a fixed lens group and is fixed relative to the front lens group GO along the first direction. In this way, when the first turning element is in the first position or the second position, the first rear lens group G1 is movable along the first direction, so as to realize accurate focusing of the image plane IMA.

[0024] In some embodiments of the first aspect, when the first turning element is in the first position, the effective focal length f g01 of the first front lens group G01 satisfies: f g011 of the first front lens group G01 and the first rear lens group G1 satisfies: f 2 of the first front lens group G01 and the first rear lens group G1 satisfies: f 2 of the first front lens group G01 and the first rear lens group G1 satisfies: f g011 of the first front lens group G01 and the first rear lens group G1 satisfies: f g01 of the first front lens group G01 and the first rear lens group G1 satisfies: f g011 , and 0 < ξ1≤ 3. In this way, the focusing stroke of the first rear lens group G1 can be reduced, which is conducive to reducing the volume of the focusing motor, and the focusing stroke of the first rear lens group G1 can also be prevented from being too short, which reduces the precision requirement of the focusing motor.

[0025] In some embodiments of the first aspect, when the first turning element is in the second position, the effective focal length f g02 of the second front lens group G02 satisfies: f g021 of the second front lens group G02 and the first rear lens group G1 satisfies: f 2 of the second front lens group G02 and the first rear lens group G1 satisfies: f 2 of the second front lens group G02 and the first rear lens group G1 satisfies: f g021 of the second front lens group G02 and the first rear lens group G1 satisfies: f g02 of the second front lens group G02 and the first rear lens group G1 satisfies: f g021 , and 0 < ξ2≤ 3. In this way, the focusing stroke of the first rear lens group G1 can be reduced, which is conducive to reducing the volume of the focusing motor, and the focusing stroke of the first rear lens group G1 can also be prevented from being too short, which reduces the precision requirement of the focusing motor.

[0026] In some embodiments of the first aspect, the effective focal length f g01 of the first front lens group G01 satisfies: f g011 of the first front lens group G01 and the first rear lens group G1 satisfies: f g011 , and 0 < β1≤ 0.5; wherein β1= f g01 . In this way, the stroke compression ratio coefficient ξ1 can be prevented from being too small, which is conducive to reducing the focusing stroke of the first rear lens group G1.

[0027] In some embodiments of the first aspect, the effective focal length f of the second front lens group G02 g02 The combined focal length f of the second front lens group G02 and the first rear lens group G1 g021 It satisfies: 0 < β² ≤ 0.5; where β² = f g021 / f g02 This setting avoids the stroke compression ratio coefficient ξ2 being too small, which helps to reduce the focusing stroke of the first rear lens group G1.

[0028] In some embodiments of the first aspect, the effective focal length f of the first front lens group G01 g01 The combined focal length f of the first front lens group G01 and the first rear lens group G1 g011 Satisfies: 0.75 ≤ 1 - β1 2 <1; where β1=f g011 / f g01 This configuration reduces the focusing stroke of the first rear lens group G1, which helps to reduce the size of the focusing motor; it also avoids the focusing stroke of the first rear lens group G1 being too short, thus reducing the accuracy requirements of the focusing motor.

[0029] In some embodiments of the first aspect, the effective focal length f of the second front lens group G02 g02 The combined focal length f of the second front lens group G02 and the first rear lens group G1 g021 Satisfies: 0.75 ≤ 1 - β² 2 <1; where β2=f g021 / f g02 This configuration reduces the focusing stroke of the first rear lens group G1, which helps to reduce the size of the focusing motor; it also avoids the focusing stroke of the first rear lens group G1 being too short, thus reducing the accuracy requirements of the focusing motor.

[0030] In some embodiments of the first aspect, the combined focal length f of the first front lens group G01 and the first rear lens group G1 is... g011 The first effective focal length F1 satisfies: 0 < α1 ≤ 2; where α1 = F1 / f g011 This setting avoids an excessively large stroke compression ratio coefficient ξ1, thereby reducing the precision requirements for the focusing motor.

[0031] In some embodiments of the first aspect, the combined focal length f of the second front lens group G02 and the first rear lens group G1 is... g021 The second effective focal length F2 satisfies: 0 < α2 ≤ 2; where α2 = F2 / f g021 This setting avoids an excessively large stroke compression ratio coefficient ξ2, which in turn reduces the precision requirements for the focusing motor.

[0032] In some embodiments of the first aspect, the first front lens group G01, the second front lens group G02, and the first rear lens group G1 all have positive refractive powers; and the second rear lens group G2 has a negative refractive power. In this way, some aberrations can be cancelled out, thereby facilitating reduction of aberrations of the optical lens.

[0033] In some embodiments of the first aspect, the first front lens group G01 and the second front lens group G02 each include at least one positive lens; the first rear lens group G1 includes, in a direction from an object side to an image side, a first lens L11, a second lens L12, and a third lens L13, the first lens L11 and the third lens L13 each have a positive refractive power, the second lens L12 has a negative refractive power, and there is a gap between any two adjacent lenses among the first lens L11, the second lens L12, and the third lens L13; and the second rear lens group G2 includes, in the direction from the object side to the image side, a fourth lens L21 and a fifth lens L22, the fourth lens L21 has a negative refractive power or a positive refractive power, the fifth lens L22 has a negative refractive power, and there is a gap between the fourth lens L21 and the fifth lens L22. In this way, aberrations of the optical lens can be corrected.

[0034] In some embodiments of the first aspect, the second lens L12 includes a positive lens and a negative lens arranged in sequence. In this way, aberrations of the optical lens can be corrected.

[0035] In some embodiments of the first aspect, the fifth lens L22 includes a positive lens and a negative lens arranged in sequence. In this way, aberrations of the optical lens can be corrected.

[0036] In some embodiments of the first aspect, the fifth lens L22 includes two negative lenses arranged in sequence. In this way, aberrations of the optical lens can be corrected.

[0037] In some embodiments of the first aspect, the first turning element is a prism, and the first turning element includes a first incident surface and a first exit surface, the first incident surface is arranged towards a side where the front lens group is located, and the first exit surface is arranged towards a side where the first rear lens group is located.

[0038] In some embodiments of the first aspect, the first turning element is a reflector.

[0039] In some embodiments of the first aspect, the optical lens further includes a second turning element arranged on an image side of the second rear lens group G2, the second turning element is a prism and has a prism incident surface and a prism exit surface, the prism incident surface is arranged towards a side where the second rear lens group G2 is located, the prism exit surface is arranged towards a side of an image plane of the optical lens, and the prism exit surface is arranged obliquely relative to an optical axis of the second rear lens group G2. In this way, the structure of the camera module can be more compact, thereby facilitating reduction of the thickness of the electronic device.

[0040] In some embodiments of the first aspect, the optical lens further comprises a second turning element disposed on the image side of the second rear lens group G2, the second turning element is a prism, and has a prism entrance surface and a prism exit surface, the prism entrance surface is disposed towards the side where the second rear lens group G2 is located, the prism exit surface is disposed towards the side of the image surface of the optical lens, the included angle between the prism entrance surface and the prism exit surface is a right angle, and the prism exit surface is parallel to the optical axis of the second rear lens group G2.

[0041] In some embodiments of the first aspect, the optical lens further comprises a second turning element disposed on the image side of the second rear lens group G2, the second turning element is a prism, and has a prism entrance surface and a prism exit surface, the prism entrance surface is disposed towards the side where the second rear lens group G2 is located, the prism exit surface is disposed towards the side of the image surface of the optical lens, the included angle between the prism entrance surface and the prism exit surface is a right angle, and the prism exit surface is parallel to the optical axis of the second rear lens group G2.

[0042] In some embodiments of the first aspect, the optical lens further comprises a second turning element disposed on the image side of the second rear lens group G2, the second turning element is a prism, and has a prism entrance surface and a prism exit surface, the prism entrance surface is disposed towards the side where the second rear lens group G2 is located, the prism exit surface is disposed towards the side of the image surface of the optical lens, the included angle between the prism entrance surface and the prism exit surface is a right angle, and the prism exit surface is parallel to the optical axis of the second rear lens group G2.

[0043] The camera module in the embodiments of the present application has the same beneficial effects as the optical lens in the first aspect, which will not be repeated here.

[0044] In some embodiments of the first aspect, the optical lens further comprises a second turning element disposed on the image side of the second rear lens group G2, the second turning element is a prism, and has a prism entrance surface and a prism exit surface, the prism entrance surface is disposed towards the side where the second rear lens group G2 is located, the prism exit surface is disposed towards the side of the image surface of the optical lens, the included angle between the prism entrance surface and the prism exit surface is a right angle, and the prism exit surface is parallel to the optical axis of the second rear lens group G2.

[0045] The electronic device in the embodiments of the present application has the same beneficial effects as the optical lens in the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0046] Fig. 1a Schematic diagram of definition of optical system image side main surface and image side main point;

[0047] Fig. 1b Schematic diagram of definition of optical system object side main surface and object side main point;

[0048] Fig. 1c Schematic diagram of definition of optical system object distance and image distance;

[0049] Fig. 2a Structure schematic diagram of the optical lens of the camera module installed for an electronic device in the related art in a first state;

[0050] Fig. 2b Structure schematic diagram of the optical lens of the camera module in the related art in a second state;

[0051] Fig. 3 Schematic diagram of the back of the electronic device (mobile phone) in some embodiments of the present application;

[0052] Fig. 4 is a schematic structural view of an electronic device in the first embodiment of the present application in a short-focus state; Fig. 3 is a schematic structural view of an electronic device in the first embodiment of the present application in a long-focus state;

[0053] Fig. 5 is a schematic structural view of an electronic device in the first embodiment of the present application in a short-focus state; Fig. 4 is a schematic structural view of an electronic device in the first embodiment of the present application in a long-focus state;

[0054] Fig. 6 is a schematic structural view of an optical lens in a short-focus state in the first embodiment of the present application;

[0055] Fig. 7 is a schematic structural view of an optical lens in a long-focus state in the first embodiment of the present application;

[0056] Fig. 8 is a schematic structural view of an optical lens in a short-focus state and in a long-focus state in the first embodiment of the present application;

[0057] Fig. 9 is a schematic structural view of an optical lens in a short-focus state in the first embodiment of the present application;

[0058] Fig. 10 is a schematic structural view of an optical lens in a long-focus state in the second embodiment of the present application;

[0059] Fig. 11 is a schematic structural view of an optical lens in a long-focus state in the third embodiment of the present application;

[0060] Fig. 12 is a schematic structural view of an optical lens in a long-focus state in the fourth embodiment of the present application;

[0061] Fig. 13 is a schematic structural view of an optical lens in a long-focus state in the fourth embodiment of the present application;

[0062] Fig. 14a is a schematic structural view of an optical lens in a short-focus state in the fifth embodiment of the present application;

[0063] Fig. 14b is a schematic structural view of an optical lens in a long-focus state in the fifth embodiment of the present application;

[0064] Fig. 14c is a schematic structural view of an optical lens in a short-focus state in the sixth embodiment of the present application;

[0065] Fig. 14d is a schematic structural view of an optical lens in a long-focus state in the sixth embodiment of the present application;

[0066] Fig. 15aA structure schematic diagram of the optical lens in the seventh embodiment of the present application in a short-focus state;

[0067] Fig. 15b A structure schematic diagram of the optical lens in the seventh embodiment of the present application in a long-focus state;

[0068] Fig. 15c An axial spherical aberration curve of the optical lens in the seventh embodiment of the present application in a short-focus state;

[0069] Fig. 15d A field curvature curve and a distortion curve of the optical lens in the seventh embodiment of the present application in a short-focus state;

[0070] Fig. 15e An axial spherical aberration curve of the optical lens in the seventh embodiment of the present application in a long-focus state;

[0071] Fig. 15f A field curvature curve and a distortion curve of the optical lens in the seventh embodiment of the present application in a long-focus state;

[0072] Fig. 16a A structure schematic diagram of the optical lens in the eighth embodiment of the present application in a short-focus state;

[0073] Fig. 16b A structure schematic diagram of the optical lens in the eighth embodiment of the present application in a long-focus state;

[0074] Fig. 16c An axial spherical aberration curve, a field curvature curve and a distortion curve of the optical lens in the eighth embodiment of the present application in a short-focus state;

[0075] Fig. 16d An axial spherical aberration curve, a field curvature curve and a distortion curve of the optical lens in the eighth embodiment of the present application in a long-focus state;

[0076] Fig. 17a A structure schematic diagram of the optical lens in the ninth embodiment of the present application in a short-focus state;

[0077] Fig. 17b A structure schematic diagram of the optical lens in the ninth embodiment of the present application in a long-focus state;

[0078] Fig. 17c An axial spherical aberration curve of the optical lens in the ninth embodiment of the present application in a short-focus state;

[0079] Fig. 17d A field curvature curve and a distortion curve of the optical lens in the ninth embodiment of the present application in a short-focus state;

[0080] Fig. 17eThe axial spherical aberration curve of the optical lens in the ninth embodiment of the present application when in the long-focus state;

[0081] Fig. 17f The field curvature curve and the distortion curve of the optical lens in the ninth embodiment of the present application when in the long-focus state;

[0082] Fig. 18a The structural schematic diagram of the optical lens in the tenth embodiment of the present application when in the short-focus state;

[0083] Fig. 18b The structural schematic diagram of the optical lens in the tenth embodiment of the present application when in the long-focus state;

[0084] Fig. 18c The axial spherical aberration curve, the field curvature curve and the distortion curve of the optical lens in the tenth embodiment of the present application when in the short-focus state;

[0085] Fig. 18d The axial spherical aberration curve, the field curvature curve and the distortion curve of the optical lens in the tenth embodiment of the present application when in the long-focus state;

[0086] Fig. 19a The structural schematic diagram of the optical lens in the eleventh embodiment of the present application when in the short-focus state;

[0087] Fig. 19b The structural schematic diagram of the optical lens in the eleventh embodiment of the present application when in the long-focus state;

[0088] Fig. 19c The axial spherical aberration curve, the field curvature curve and the distortion curve of the optical lens in the eleventh embodiment of the present application when in the short-focus state;

[0089] Fig. 19d The axial spherical aberration curve, the field curvature curve and the distortion curve of the optical lens in the eleventh embodiment of the present application when in the long-focus state. DETAILED DESCRIPTION

[0090] The following explains and describes the relevant technical terms involved in the embodiments of the present application.

[0091] Focal power, expressed as the reciprocal of the image-side focal length (approximately recognized as the refractive index of air is 1), which represents the ability of the optical lens to deflect light rays. The lens or lens group with positive focal power has a positive focal length, which has the effect of converging light rays. The lens or lens group with negative focal power has a negative focal length, which has the effect of diverging light rays.

[0092] A positive lens, also known as a converging lens or convex lens, has the function of converging light rays. Convex lenses are classified into biconvex, plano-convex, and concave-convex (or positive meniscus) types.

[0093] A negative lens, also known as a diverging lens or concave lens, has the effect of diverging light. Concave lenses are classified into biconcave, plano-concave, and convex-concave types.

[0094] The optical axis refers to the axis of symmetry of an optical system. For example, the optical axis of an optical lens is the axis that passes through the center of each optical element of the optical lens. The optical axis also refers to the center line of a light beam (light column). The optical properties of the light beam do not change when it rotates around this axis.

[0095] Focal length is a measure of the convergence or divergence of light in an optical system. Focal length is divided into image-side focal length and object-side focal length. Image-side focal length is the distance from the image-side principal plane to the image-side focal point; similarly, object-side focal length is the distance from the object-side principal plane to the object-side focal point. In the embodiments of this application, the focal length, effective focal length (EFL), and combined focal length all refer to image-side focal length.

[0096] The principal plane of a lens (lens group), also known as the principal plane, includes the image-side principal plane and the object-side principal plane. When parallel light shines on the lens (lens group), after refraction, the light rays pass through the focal point on the image side. After refraction, the light rays are extended backward and intersect the incident light rays at a point. The plane perpendicular to the optical axis through this point is the image-side principal plane. The point where the image-side principal plane intersects the optical axis of the lens is the image-side principal point. Similarly, light rays emitted from the object-side focal point become parallel after refraction by the lens. The extended incident light rays intersect the parallel light rays at a point. The plane perpendicular to the optical axis through this point is the object-side principal plane. The point where the object-side principal plane intersects the optical axis of the lens is the object-side principal point.

[0097] like Fig. 1a As shown, AB is an incident ray parallel to the optical axis. After passing through an optical system (which can be a single lens or a lens group formed by multiple lenses, etc.), the outgoing ray E'F' intersects the optical axis at F'. According to the imaging theory of an ideal optical system, F' is the image point of the object point on the infinity axis, called the image-side focal point. If the incident ray AB and the outgoing ray E'F' are extended in opposite directions, the two rays must intersect at a point, let this point be Q'. A plane perpendicular to the optical axis is drawn through Q', intersecting the optical axis at point H'. Then H' is called the image-side principal point, the Q'H' plane is called the image-side principal plane, and the distance from the principal point H' to the focal point F' is called the image-side focal length.

[0098] like Fig. 1bAs shown, F is called the object-side focal point, and the extension of the incident light ray from the focal point F intersects the extension of the corresponding outgoing light ray parallel to the optical axis at point Q. A plane perpendicular to the optical axis is drawn through point Q to intersect the optical axis at point H, which is called the object-side principal point of the optical system. The distance from the object-side principal point H to the object-side focal point F is called the object-side focal length of the optical system.

[0099] The object distance, as shown, refers to the distance from the object plane to the object-side principal plane of the optical system, and is denoted by the English letter U. The optical system can be a single lens or a lens group formed by multiple lenses. Fig. 1c The image distance, as shown, refers to the distance from the image plane of the optical system to the image-side principal plane, and is denoted by the English letter V. The optical system can be a single lens or a lens group formed by multiple lenses.

[0100] Fig. 1c Focusing, specifically refers to adjusting the position of the lens group (i.e., the focusing lens group) in the optical lens to control the image distance, so that the image plane of the optical lens falls on the photosensitive element, so that the imaging of the optical lens is the clearest.

[0101] Internal focusing (Internal Focusing, abbreviated as IF), refers to the movement of a focusing lens group inside the optical lens to complete focusing when the optical lens is focused. The total length (TTL) of the optical lens remains unchanged during focusing.

[0102] Focusing stroke refers to the movement distance of the focusing lens group during the focusing process of the optical lens. For example, the distance of the focusing lens group moving along the optical axis during the process of switching the optical lens from focusing on a distant scene to focusing on a close-up scene is the focusing stroke.

[0103] The image plane is located on the image side of all lenses in the optical lens, and the position where the light rays form an image after passing through each lens in the optical lens in turn.

[0104] The diaphragm refers to an entity in the optical system that restricts the light beam. The diaphragm can be the edge of the lens, the frame or a specially designed aperture screen. The function of the diaphragm can be divided into two aspects: limiting the light beam or limiting the size of the field of view (imaging range). The diaphragm that limits the light beam the most in the optical system is called the aperture diaphragm, and the diaphragm that limits the field of view (size) the most is called the field diaphragm.

[0105] Variable aperture diaphragm refers to a diaphragm that can change the size of its light aperture.

[0106] The pupil is the image of the aperture diaphragm. The aperture diaphragm is conjugated by the optical system in front of the aperture diaphragm and is called the entrance pupil, which is abbreviated as the entrance pupil. The diameter of the entrance pupil is the diameter of the entrance pupil.

[0107] The pupil is the image of the aperture diaphragm. The aperture diaphragm is conjugated by the optical system in front of the aperture diaphragm and is called the entrance pupil, which is abbreviated as the entrance pupil. The diameter of the entrance pupil is the diameter of the entrance pupil. ​

[0108] Relative aperture is the ratio of entrance pupil diameter D to image-side focal length fˊ, denoted as RA, i.e. RA = D / fˊ.

[0109] F number (Fno or F / #) is the reciprocal of relative aperture, i.e. F = fˊ / D; the smaller the F number, the larger the aperture, and the smaller the depth of field; on the contrary, the larger the F number, the smaller the aperture, and the larger the depth of field.

[0110] Total track length (TTL) refers to the distance from the surface closest to the object side of the optical lens (or optical system) to the image plane.

[0111] ImgH (Image Hight) represents half of the diagonal length of the effective photosensitive area on the photosensitive element, i.e. image height.

[0112] Abbe number (Abbe) is the ratio of the difference in refractive index of an optical material at different wavelengths, representing the degree of dispersion of the material.

[0113] Aberration is the deviation of the image formed by an uncorrected optical system from that formed by an ideal optical system. Aberration includes spherical aberration, coma, field curvature, astigmatism, distortion, and chromatic aberration.

[0114] Spherical aberration is a wide-beam aberration. The concentric light beams emitted by an on-axis point are no longer concentric after passing through the optical system. The light rays at different incident heights pass through the optical system and intersect the optical axis at different positions, with different degrees of deviation from the ideal image point (on-axis image point), which is called axial spherical aberration or simply spherical aberration. Due to spherical aberration, the image point on the Gaussian image plane is not a point, but a circular diffraction spot, and the radius of the diffraction spot is called the sagittal spherical aberration.

[0115] Coma is a wide-beam aberration of off-axis points. For an optical system with coma, the image point of an off-axis object point on the ideal image plane is like a comet-like light spot, with a bright spot formed by the fine light beams near the chief ray, and image points formed by different aperture light beams far from the chief ray being different circular rings far from the chief ray, hence the imaging defect is called coma.

[0116] Chromatic aberration (CA) is the difference in refractive index of an optical material for different colors of light, so the light rays of different colors with the same aperture intersect the optical axis at different points after passing through the optical system. The intersection points of light rays of different colors with different apertures and the optical axis are also different. Therefore, at any image plane position, the image of a point is a colored diffraction spot. The difference in imaging position and size between different colors is called chromatic aberration. Chromatic aberration is divided into two types: axial chromatic aberration and sagittal chromatic aberration.

[0117] Axial chromatic aberration: the difference between the imaging positions of two color lights at the on-axis point is called the position chromatic aberration, also known as the axial chromatic aberration.

[0118] Tangential chromatic aberration: the same medium has different refractive indexes for different color lights, so the tangential magnification of different color lights for off-axis points is not equal, and this difference is called the tangential chromatic aberration, also known as the magnification chromatic aberration.

[0119] Distortion, also known as distortion, the intersection height of the chief ray of different fields of view after passing through the optical lens is not equal to the ideal image height, and the difference between the two is the distortion.

[0120] Field curvature: used to represent the difference in the position of the sharpest image point of the optical lens group after the non-central field of view light passes through the optical lens group and the position of the sharpest image point of the central field of view. When there is field curvature, the image points beyond the paraxial region on the Gaussian plane will become blurred, and the image of the plane object becomes a rotating curved surface, and a perfect object plane image cannot be obtained at the image plane.

[0121] Astigmatism: the meridional image point and the sagittal image point of a thin light beam do not coincide, and the axial distance between the two is called astigmatism.

[0122] Meridional plane: a plane formed by the chief ray of an off-axis object point and the optical system axis. The light rays located in the meridional plane are collectively referred to as meridional light beams. The point formed by the meridional light beams is called a meridional image point. The image plane where the meridional image point is located is called a meridional image plane.

[0123] Sagittal plane: a plane formed by the chief ray of an off-axis object point and perpendicular to the meridional plane. The light rays located in the sagittal plane are collectively referred to as sagittal light beams. The point formed by the sagittal light beams is called a sagittal image point. The image plane where the sagittal image point is located is called a sagittal image plane.

[0124] Fig. 2a A structure diagram of an optical lens of a camera module installed on an electronic device in a first state, Fig. 2b A structure diagram of an optical lens of a camera module in a second state. As Fig. 2a And Fig. 2bAs shown, the optical lens includes a transition element 01 and a lens group 02 arranged along the object-to-image direction. The transition element 01 includes a first prism 011 and a second prism 012. The first prism 011 includes a first incident surface 0111, a first reflecting surface 0112 and a first exit surface 0113. The second prism 012 includes a second incident surface 0121, a second reflecting surface 0122 and a second exit surface 0123. The first reflecting surface 0112 and the second reflecting surface 0122 are in contact with each other. The first incident surface 0111 and the second incident surface 0121 have different curvatures.

[0125] The pivot element 01 can rotate between the first position and the second position, such as Fig. 2a As shown, when the deflection element 01 is in the first position, the first incident surface 0111 faces the object side. Light from the scene enters the first prism 011 through the first incident surface 0111, and after being deflected by the first prism 011, it passes through the lens group 02 and illuminates the photosensitive surface of the photosensitive element 03. At this time, the optical lens has a first focal length; as shown... Fig. 2b As shown, when the deflection element 01 is in the second position, the second incident surface 0121 faces the object side. The light from the scene enters the second prism 012 through the second incident surface 0121. After being deflected by the second prism 012, it passes through the lens group 02 and illuminates the photosensitive surface of the photosensitive element 03. At this time, the optical lens has a second focal length, and the second focal length is different from the first focal length.

[0126] In this type of optical lens, the incident surfaces of different prisms in the pivot element 01 can be adjusted to face the object side by rotating the pivot element 01. Since the incident surfaces of different prisms have different curvatures, the focal length of the optical lens can be changed, thereby achieving zooming of the optical lens.

[0127] However, the zoom of this optical lens requires the rotation of the pivot element 01, which requires a larger space inside the camera module to avoid the movement of the prisms in the first prism 011 and the second prism 012. This results in a larger size of the camera module in the light-gathering direction of the optical lens (Y direction in the figure), which in turn results in a larger size of the electronic device in the thickness direction, which is not conducive to the thinning and lightening of electronic devices.

[0128] This application provides an optical lens, a camera module, and an electronic device. The optical lens includes a movable deflection element. By moving the deflection element to the image side of different front lens groups, different optical systems can be formed to achieve zoom. The deflection element does not increase the space occupied in the light-gathering direction of the optical lens during movement, thereby helping to reduce the thickness of the electronic device.

[0129] The technical solutions in some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0130] The electronic device in the embodiments of the present application can be a mobile phone, a tablet computer, a notebook computer, a wearable device (such as a smart watch), or the like electronic device having a camera module. The electronic device in the embodiments of the present application is specifically described below by taking a mobile phone as an example. Other types of electronic devices can be specifically arranged by referring to the structure of the mobile phone embodiment, which will not be described here.

[0131] Fig. 3 FIG. 1 is a schematic view of the back of an electronic device (mobile phone) in some embodiments of the present application, Fig. 4 FIG. 2 is a schematic view of the front of the electronic device in FIG. 1, Fig. 3 FIG. 3 is an A-A sectional view of the electronic device in FIG. 1, Fig. 5 FIG. 4 is a schematic view of the structure of the electronic device in FIG. 1 in another state. As shown in FIG. 4, the electronic device includes a housing 200, a display screen 300, and a camera module 100, and the camera module 100 is mounted on the housing 200. Fig. 4 Fig. 3-5 In some embodiments, as shown in FIGS. 2 and 3, the housing 200 includes a middle frame 210 (also referred to as a front shell or a front frame) and a back cover 220 (also referred to as a battery cover). The display screen 300 is arranged on one side of the middle frame 210, and the back cover 220 is arranged on the other side of the middle frame 210. The back cover 220 and the middle frame 210 enclose a first accommodating space 230, and the camera module 100 is arranged in the first accommodating space 230. The display screen 300 and the middle frame 210 enclose a second accommodating space 240, and electronic devices such as a mainboard 400 are arranged in the second accommodating space 240. The mainboard 400 is connected to the display screen 300 and the camera module 100 through a flexible circuit board, respectively.

[0132] In some embodiments, as shown in FIGS. 2 and 3, the housing 200 includes a middle frame 210 (also referred to as a front shell or a front frame) and a back cover 220 (also referred to as a battery cover). The display screen 300 is arranged on one side of the middle frame 210, and the back cover 220 is arranged on the other side of the middle frame 210. The back cover 220 and the middle frame 210 enclose a first accommodating space 230, and the camera module 100 is arranged in the first accommodating space 230. The display screen 300 and the middle frame 210 enclose a second accommodating space 240, and electronic devices such as a mainboard 400 are arranged in the second accommodating space 240. The mainboard 400 is connected to the display screen 300 and the camera module 100 through a flexible circuit board, respectively. Fig. 4 Fig. 5 In some embodiments, as shown in FIGS. 2 and 3, the housing 200 includes a middle frame 210 (also referred to as a front shell or a front frame) and a back cover 220 (also referred to as a battery cover). The display screen 300 is arranged on one side of the middle frame 210, and the back cover 220 is arranged on the other side of the middle frame 210. The back cover 220 and the middle frame 210 enclose a first accommodating space 230, and the camera module 100 is arranged in the first accommodating space 230. The display screen 300 and the middle frame 210 enclose a second accommodating space 240, and electronic devices such as a mainboard 400 are arranged in the second accommodating space 240. The mainboard 400 is connected to the display screen 300 and the camera module 100 through a flexible circuit board, respectively.

[0133] In some embodiments, as shown in FIGS. 2 and 3, the housing 200 includes a middle frame 210 (also referred to as a front shell or a front frame) and a back cover 220 (also referred to as a battery cover). The display screen 300 is arranged on one side of the middle frame 210, and the back cover 220 is arranged on the other side of the middle frame 210. The back cover 220 and the middle frame 210 enclose a first accommodating space 230, and the camera module 100 is arranged in the first accommodating space 230. The display screen 300 and the middle frame 210 enclose a second accommodating space 240, and electronic devices such as a mainboard 400 are arranged in the second accommodating space 240. The mainboard 400 is connected to the display screen 300 and the camera module 100 through a flexible circuit board, respectively.

[0134] In some embodiments, as shown in FIGS. 2 and 3, the housing 200 includes a middle frame 210 (also referred to as a front shell or a front frame) and a back cover 220 (also referred to as a battery cover). The display screen 300 is arranged on one side of the middle frame 210, and the back cover 220 is arranged on the other side of the middle frame 210. The back cover 220 and the middle frame 210 enclose a first accommodating space 230, and the camera module 100 is arranged in the first accommodating space 230. The display screen 300 and the middle frame 210 enclose a second accommodating space 240, and electronic devices such as a mainboard 400 are arranged in the second accommodating space 240. The mainboard 400 is connected to the display screen 300 and the camera module 100 through a flexible circuit board, respectively. Fig. 4 Fig. 5 In some embodiments, as shown in FIGS. 2 and 3, the housing 200 includes a middle frame 210 (also referred to as a front shell or a front frame) and a back cover 220 (also referred to as a battery cover). The display screen 300 is arranged on one side of the middle frame 210, and the back cover 220 is arranged on the other side of the middle frame 210. The back cover 220 and the middle frame 210 enclose a first accommodating space 230, and the camera module 100 is arranged in the first accommodating space 230. The display screen 300 and the middle frame 210 enclose a second accommodating space 240, and electronic devices such as a mainboard 400 are arranged in the second accommodating space 240. The mainboard 400 is connected to the display screen 300 and the camera module 100 through a flexible circuit board, respectively.

[0135] ​​​The optical lens 10 mainly uses the refraction principle of the lens to form an image, that is, the light of the photographed scene passes through the optical lens 10 to form a clear image on the focal plane of the optical lens 10, and the image of the scene is recorded by the photosensitive element 20 located at the focal plane position. The photosensitive element 20 converts the optical image into an electrical signal and transmits it to the processor on the mainboard 400, and the processor transmits the electrical signal to the display screen 300 to display the image of the photographed scene on the display screen 300.

[0136] The photosensitive element 20 (also known as an image sensor) is a kind of semiconductor chip, and the surface contains hundreds of thousands to millions of photodiodes. When exposed to light, it will generate electric charge. The photosensitive element 20 can be a charge-coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS), which is not specifically limited here.

[0137] The optical filter 30 is used to filter out the unnecessary wave band in the light, prevent the photosensitive element 20 from generating false colors or moire, and improve its effective resolution and color restoration. In some embodiments, as shown in Fig. 3 , the optical filter 30 is an infrared filter.

[0138] As shown in Fig. 3 , the optical filter 30 can be independently set, or the optical filter 30 can be attached to the surface of one of the lenses or prisms of the optical lens 10 to achieve light filtering, which is not specifically limited here.

[0139] In some embodiments, as shown in Fig. 3 , the camera module 100 includes a camera housing 40, and a part of the optical lens 10, the photosensitive element 20, and the optical filter 30 are arranged in the camera housing 40.

[0140] Fig. 6 is a structural schematic view of the optical lens in the first embodiment of the present application in a short-focus state, Fig. 7 is a structural schematic view of the optical lens in the first embodiment of the present application in a long-focus state. As shown in Fig. 6 and Fig. 7 , the optical lens 10 includes a front lens group G0, a first turning element 1, a first rear lens group G1, and a second rear lens group G2 arranged in the object side to the image side direction. The front lens group G0 includes a first front lens group G01 and a second front lens group G02 arranged in a first direction X, and the first direction X is parallel to the optical axis of the first rear lens group G1.

[0141] The first turning element 1 can move between a first position and a second position along the first direction X; as Fig. 6As shown, when the first deflection element 1 is in the first position, the first deflection element 1 is located on the image side of the first front lens group G01 and is used to reflect the emitted light beam of the first front lens group G01 to the first rear lens group G1. The optical lens 10 has a first effective focal length F1.

[0142] like Fig. 7 As shown, when the first deflection element 1 is in the second position, the first deflection element 1 is located on the image side of the second front lens group G02 and is used to reflect the emitted light beam of the second front lens group G02 to the first rear lens group G1. The optical lens 10 has a second effective focal length F2, which is greater than the first effective focal length F1. That is, the optical lens 10 is in a short focal length state when the first deflection element 1 is in the first position, and the optical lens 10 is in a long focal length state when the first deflection element 1 is in the second position.

[0143] Among them, such as Fig. 3 and Fig. 4 As shown, the rear cover 220 is provided with a first camera window 221 and a second camera window 222. The first camera window 221 and the second camera window 222 are arranged along the first direction X. The first camera window 221 is arranged opposite to the first front lens group G01 to ensure that the optical lens 10 can receive the light emitted by the subject outside the housing 200 when it is in the short focal length state. The second camera window 222 is arranged opposite to the second front lens group G02 to ensure that the optical lens 10 can receive the light emitted by the subject outside the housing 200 when it is in the long focal length state.

[0144] The optical lens 10 in the embodiments of this application, such as Fig. 6 and Fig. 7 As shown, by moving the first pivot element 1 along the first direction X, the first pivot element 1 can be moved to the image side of the first front lens group G01 and the second front lens group G02 respectively, thus forming an optical system with different effective focal lengths to achieve zoom of the optical lens 10. During the movement of the first pivot element 1 along the first direction X, no additional space is added in the light-gathering direction Y of the optical lens (i.e., the thickness direction of the electronic device), which helps to reduce the space occupied by the camera module 100 in the thickness direction of the electronic device, thereby helping to achieve the thinning and lightening of the electronic device.

[0145] like Fig. 6 and Fig. 7As shown, the moving stroke L of the first turning element 1 between the first position and the second position satisfies: L≤23mm. For example, the moving stroke L can be 8.218mm, 8.956mm, 12.906mm, 13.719mm, 22.834mm, etc. In this way, the moving stroke L of the first turning element can be avoided to be too large, so that the actuator (such as a driving motor) of the first turning element 1 can be designed to be more compact, thereby making the structure of the camera module more compact.

[0146] As shown in Fig. 6 and Fig. 7 , the moving stroke L can be the distance between the optical axis of the first front lens group G01 and the optical axis of the second front lens group G02.

[0147] Fig. 8 is a schematic diagram of the optical lens 10 in the first embodiment of the present application when in the short-focus state and in the long-focus state. As shown in Fig. 6 and Fig. 8 (1), when the first turning element 1 is located at the first position, the first front lens group G01, the first turning element 1, the first rear lens group G1 and the second rear lens group G2 form a first optical system, and the total length of the first optical system is TTL1; as shown in Fig. 7 and Fig. 8 (2), when the first turning element 1 is located at the second position, the second front lens group G02, the first turning element 1, the first rear lens group G1 and the second rear lens group G2 form a second optical system, and the total length of the second optical system is TTL2.

[0148] As shown in Fig. 6 and Fig. 7 , TTL1=A1A2+A2O, that is, TTL1 is the sum of the lengths of the line segment A1A2 and the line segment A2O; TTL2=B1B2+B2O, that is, TTL2 is the sum of the lengths of the line segment B1B2 and the line segment B2O. A1 is the intersection of the optical axis of the first front lens group G01 and the lens surface of the first front lens group G01 closest to the object side; A2 is the intersection of the optical axis of the first front lens group G01 and the reflecting surface of the first turning element 1; O is the intersection of the optical axis of the first rear lens group G1 and the image surface (i.e. the light sensing surface of the light sensing element 20); B1 is the intersection of the optical axis of the second front lens group G02 and the lens surface of the second front lens group G02 closest to the object side; B2 is the intersection of the optical axis of the second front lens group G02 and the reflecting surface of the first turning element 1.

[0149] As shown in Fig. 8As shown in (1) and (2) of FIG. 1, when the first turning element 1 moves between the first position and the second position, the image plane IMA of the optical lens 10 remains unchanged; TTL1, TTL2 satisfy: TTL2-TTL1≤23mm. For example: TTL2-TTL1 can be 8.218mm, 8.956mm, 12.906mm, 13.719mm, 22.834mm, etc.

[0150] As shown in (1) and (2) of FIG. 1, when the first turning element 1 moves between the first position and the second position, the image plane IMA of the optical lens 10 remains unchanged; TTL1, TTL2 satisfy: TTL2-TTL1≤23mm. For example: TTL2-TTL1 can be 8.218mm, 8.956mm, 12.906mm, 13.719mm, 22.834mm, etc. Fig. 8 As shown in (1) and (2) of FIG. 1, when the first turning element 1 moves between the first position and the second position, the image plane IMA of the optical lens 10 remains unchanged; TTL1, TTL2 satisfy: TTL2-TTL1≤23mm. For example: TTL2-TTL1 can be 8.218mm, 8.956mm, 12.906mm, 13.719mm, 22.834mm, etc.

[0151] In some embodiments, as shown in (1) and (2) of FIG. 1, the first rear lens group G1 is a movable lens group, and can move relative to the front lens group G0 along the first direction X; the second rear lens group G2 is a fixed lens group, and the position of the second rear lens group G2 relative to the front lens group G0 is fixed. Fig. 4 Fig. 5 and Fig. 8 As shown in (1) and (2) of FIG. 1, the first rear lens group G1 is a movable lens group, and can move relative to the front lens group G0 along the first direction X; the second rear lens group G2 is a fixed lens group, and the position of the second rear lens group G2 relative to the front lens group G0 is fixed.

[0152] As shown in (1) and (2) of FIG. 1, the first rear lens group G1 is a movable lens group, and can move relative to the front lens group G0 along the first direction X; the second rear lens group G2 is a fixed lens group, and the position of the second rear lens group G2 relative to the front lens group G0 is fixed. Fig. 8 As shown in (1) and (2) of FIG. 1, when the first turning element 1 moves between the first position and the second position, the image plane IMA of the optical lens 10 remains unchanged; TTL1, TTL2 satisfy: TTL2-TTL1≤23mm. For example: TTL2-TTL1 can be 8.218mm, 8.956mm, 12.906mm, 13.719mm, 22.834mm, etc.

[0153] As shown in (1) and (2) of FIG. 1, when the first turning element 1 moves between the first position and the second position, the image plane IMA of the optical lens 10 remains unchanged; TTL1, TTL2 satisfy: TTL2-TTL1≤23mm. For example: TTL2-TTL1 can be 8.218mm, 8.956mm, 12.906mm, 13.719mm, 22.834mm, etc. Fig. 8 Fig. 8 ​​As shown, the front lens group G0 is a fixed lens group, and both the first front lens group G01 and the second front lens group G02 are fixed relative to the housing 200 of the electronic device. The first rear lens group G1 can move relative to the front lens group G0 along the first direction X, specifically: the first rear lens group G1 can move relative to the first front lens group G01 or the second front lens group G02 along the first direction X. The second rear lens group G2 is fixed relative to the front lens group G0 along the first direction X, specifically: the second rear lens group G2 is fixed relative to the first front lens group G01 or the second front lens group G02 along the first direction X.

[0154] In some embodiments, such as Fig. 8 As shown, the effective focal length f of the first front lens group G01 g01 The effective focal length f of the second front lens group G02 g02 and the effective focal length f of the first rear lens group G1 g1 satisfy:

[0155] TTL2-TTL1=|f g02 -f g01 +k·f g1 |

[0156] The coefficient k satisfies: 0 ≤ |k| < 1.

[0157] From the relation TTL2-TTL1=|f g02 -f g01 +k·f g1 It can be seen that the moving stroke L of the first turning element 1 is related to the effective focal length f of the first front lens group G01. g01 The effective focal length f of the second front lens group G02 g02 The effective focal length f of the first rear lens group G1 g1 And it is related to the coefficient k. By limiting 0≤|k|<1, we can avoid |k| from being too large, thereby avoiding the movement stroke L of the first turning element 1 from being too large, which in turn makes the structure of the camera module 100 more compact and helps to reduce the space occupied by the camera module 100.

[0158] In some embodiments, such as Fig. 8 As shown, the effective focal length f of the first front lens group G01 g01 The effective focal length f of the second front lens group G02 g02 The combined focal length f of the first front lens group G01 and the first rear lens group G1 g011 The combined focal length f of the second front lens group G02 and the first rear lens group G1 g021 satisfy:

[0159] Coefficient k = [(β1-1)] 2 / β1]-[(β2-1) 2 / β2).

[0160] Wherein, the first focal length allocation ratio β1 = f g011 / f g01 The second focal length allocation ratio β2 = f g021 / f g02 .

[0161] From the relation k=[(β1-1) 2 / β1]-[(β2-1) 2 As can be seen from / β2], the coefficient k is related to the first focal length allocation ratio β1 and the second focal length allocation ratio β2. By reasonably setting the size of the first focal length allocation ratio β1 and the second focal length allocation ratio β2, the size of the coefficient k can be controlled, and thus the size of the moving stroke L of the first turning element 1 can be controlled.

[0162] The following is based on Fig. 8 Taking the optical lens 10 shown as an example, the relationship TTL2-TTL1=|f g02 -f g01 +k·f g1 The derivation process of |:

[0163] like Fig. 8 As shown in (1), when the subject is at infinity, the image of the subject after passing through the first front lens group G01 is m01, and the image distance is V. 01 =f g01 The image m01 is imaged as m1 after passing through the first rear lens group G1, and the conjugate image plane of the image m1 after passing through the second rear lens group G2 is IMA.

[0164] Under the paraxial optical path model conditions, the gap between the image-side principal plane of the first front lens group G01 and the object-side principal plane of the first rear lens group G1 is defined as follows:

[0165] d 011 =f g01 +f g1 -f g01 f g1 / f g011 ;

[0166] The object distance U1 from m01 to the first rear lens group G1 is d 011 -V 01 The image distance V1 of image m1 is calculated using the Gaussian formula as follows:

[0167] V1=U1f g1 / (U1-f g1 )=f g1 (f g01 -f g011 ) / f g01 ;

[0168] The total length of the first optical system is as follows:

[0169] TTL1 = d 011 + V1 + V2 - U2 = f g01 + 2f g1 - f g1 (f g01 / f g011 + f g011 / f g01 ) + V2 - U2;

[0170] Similarly, as shown in (2) in the Fig. 6 The total length of the second optical system is as follows:

[0171] TTL2 = f g02 + 2f g1 - f g1 (f g02 / f g012 + f g021 / f g02 ) + V2 - U2;

[0172] As shown in (1) and (2) in the Fig. 7 Since the image plane IMA of the optical lens 10 remains unchanged when the first folding element 1 moves between the first position and the second position, the image distance V2 and the object distance U2 of the second rear lens group G2 are the same in the first optical system (i.e., G01 + the first folding element 1 + G1 + G2) and the second optical system (i.e., G02 + the first folding element 1 + G1 + G2), and the difference between TTL2 and TTL1 is equal to the moving stroke L of the first folding element 1 between the first position and the second position, so it can be concluded that:

[0173] L = TTL2 - TTL1 = f g02 - f g01 + f g1 [(β1-1) 2 / β1 - (β2-1) 2 / β2] ;

[0174] That is, L = |f g02 - f g01 + f g1 [(β1-1) 2 / β1 - (β2-1) 2 / β2].

[0175] In some embodiments, the coefficient k = 0; wherein the first focal length distribution ratio β1 is equal to the second focal length distribution ratio β2. In this way, the moving stroke L of the first folding element 1 = TTL2 - TTL1 = |f g02 - fg01 The movement stroke L of the first pivot element 1 is only related to the effective focal length f of the first front lens group G01. g01 The effective focal length f of the second front lens group G02 g02 This is related to the reasonable setting of the effective focal length f of the first front lens group G01. g01 The effective focal length f of the second front lens group G02 g02 The difference can control the size of the travel L of the first turning element 1.

[0176] In some embodiments, the coefficient k is approximately equal to 0, i.e., 0 < k ≤ 0.005, such as k equal to 0.005, 0.004, 0.003, 0.002, 0.001, etc. The first focal length allocation ratio β1 and the second focal length allocation ratio β2 are approximately equal (e.g., the difference is within 0.005), for example, β1 is 0.447 and β2 is 0.448. With this configuration, the travel distance L of the first turning element 1 is L = TTL2 - TTL1 ≈ |f g02 -f g01 The movement stroke L of the first pivot element 1 is only related to the effective focal length f of the first front lens group G01. g01 The effective focal length f of the second front lens group G02 g02 This is related to the reasonable setting of the effective focal length f of the first front lens group G01. g01 The effective focal length f of the second front lens group G02 g02 The difference can control the size of the travel L of the first turning element 1.

[0177] In some embodiments, the coefficient k satisfies: 0.28 ≤ k ≤ 0.46; for example, the coefficient k can be 0.291, 0.375, 0.411, 0.454, etc. The first focal length allocation ratio β1 and the second focal length allocation ratio β2 are not equal and differ significantly (e.g., the difference is greater than 0.005), for example, β1 is 0.370 and β2 is 0.453. This setting avoids the coefficient k being too large or too small, thereby avoiding the first turning element 1's travel distance L being too large or too small. If the travel distance L of the first turning element 1 is too large, the actuator of the first turning element 1 will be large, which is not conducive to reducing the space occupied by the camera module 100; if the travel distance L of the first turning element 1 is too small, the accuracy requirement of the actuator of the first turning element 1 will be high, which is not conducive to reducing the cost of the camera module 100. By setting the coefficient k to 0.28≤k≤0.46, the space occupied by the camera module 100 can be reduced, and the cost of the camera module 100 can also be reduced.

[0178] In some embodiments, the effective focal length f of the first front lens group G01 g01 With the effective focal length f of the second front lens group G02g02 Satisfies: 4.5mm≤|f g02 -f g01 |≤12.9mm, for example, f g02 -f g01 The possible thicknesses are 4.609mm, 7.409mm, 8.021mm, 12.795mm, 8.153mm, etc. This setting avoids |f g02 -f g01 |Too large or too small, if |f g02 -f g01 If |f is too large, then the movement stroke L of the first turning element 1 will be too large, which is not conducive to reducing the space occupied by the camera module 100; if |f g02 -f g01 If the value is too small, the travel distance L of the first turning element 1 will be too small, requiring higher precision from the actuator of the first turning element 1, which is not conducive to reducing the cost of the camera module 100. By using |f g02 -f g01 |Set to: 7.2mm≤|f g02 -f g01 |≤12.9mm, which can reduce the space occupied by the camera module 100 and also help reduce the cost of the camera module 100.

[0179] In some embodiments, such as Fig. 9 As shown, TTL1 and TTL2 satisfy the condition: TTL2 - TTL1 ≥ 8.1mm. This setting avoids TTL2 - TTL1 being too small. If TTL2 - TTL1 is too small, the difference in effective focal length between the first optical system (G01 + first transition element 1 + G1 + G2) and the second optical system (G02 + first transition element 1 + G1 + G2) will be too small, which is not conducive to improving the zoom ratio (or zoom range) of the optical lens 10. By setting TTL1 and TTL2 to TTL2 - TTL1 ≥ 8.1mm, it is beneficial to improve the zoom ratio (or zoom range) of the optical lens 10.

[0180] In some embodiments, such as Fig. 9 As shown, the effective focal length f of the second front lens group G02 g02 The effective focal length f of the first front lens group G01 is greater than g01 Compared to f g02 =f g01 Or f g02 <f g01 By f g02 f g01 Set to f g02 >f g01In this way, when the first pivot element 1 moves between the first position and the second position, the optical lens 10 can obtain a larger zoom range, which is beneficial to improving the zoom performance of the optical lens 10.

[0181] In some embodiments, such as Fig. 9 As shown, when the first pivot element 1 is in the first position, that is, when the optical lens 10 is in a short focal length state, the effective focal length f of the first front lens group G01 is... g01 The combined focal length f of the first front lens group G01 and the first rear lens group G1 g011 The first effective focal length F1 satisfies: the stroke compression ratio coefficient ξ1=[1-β1] 2 ]α1 2 , β1=f g011 / f g01 α1=F1 / f g011 And 0 < ξ1 ≤ 3. For example, ξ1 can be 2.25, 2.518, 2.263, 2.264, 2.212, etc.

[0182] By setting the stroke compression ratio coefficient ξ1 to 0 < ξ1 ≤ 3, the focusing stroke of the first rear lens group G1 can be reduced, which is beneficial to reducing the size of the focusing motor; at the same time, the focusing stroke of the first rear lens group G1 can be avoided to be too short, which reduces the accuracy requirements of the focusing motor and helps to reduce costs.

[0183] In some embodiments, such as Fig. 9 As shown, when the first pivot element 1 is in the second position, that is, when the optical lens 10 is in the telephoto state, the effective focal length f of the second front lens group G02 is... g02 The combined focal length f of the second front lens group G02 and the first rear lens group G1 g021 The second effective focal length F2 satisfies: the stroke compression ratio coefficient ξ2=[1-β2] 2 ]α2 2 β2=f g021 / f g02 α2=F2 / f g021 And 0 < ξ2 ≤ 3. For example, ξ2 can be 2.263, 2.363, 2.192, 2.064, 2.212, etc.

[0184] By setting the stroke compression ratio coefficient ξ2 to 0 < ξ2 ≤ 3, the focusing stroke of the first rear lens group G1 can be reduced, which is beneficial to reducing the size of the focusing motor; at the same time, the focusing stroke of the first rear lens group G1 can be avoided to be too short, which reduces the accuracy requirements of the focusing motor and helps to reduce costs.

[0185] For the convenience of understanding the correlation between the stroke compression ratio coefficient and the focusing stroke, the definition and derivation process of the stroke compression ratio coefficient are described below by taking the optical lens 10 in the short-focus state as an example:

[0186] As shown in Fig. 9 , Fig. 9 is the focusing principle diagram of the optical lens 10 in the short-focus state in the first embodiment of the present application, Fig. 9 The light path in the optical lens 10 is described by taking the paths of two light rays emitted by an object point on an axis of the object as an example.

[0187] Let the initial object distance of the object photographed by the optical lens 10 be U, and the initial image distance be V. As shown in Fig. 9 (2), when the positions of the first front lens group G01, the first rear lens group G1, and the second rear lens group G2 remain unchanged, the object distance changes by △U, and the corresponding image distance changes by △V. As shown in Fig. 6 (3), during the focusing process of the optical lens 10, the positions of the first front lens group G01 and the second rear lens group G2 remain unchanged, the object distance changes by △U, and the moving distance of the first rear lens group G1 (i.e., the focusing stroke) is △X, so that the position of the image plane IMA remains unchanged.

[0188] Let ξ1 be defined as: ξ1 = △V / △X (Formula 2);

[0189] Based on the Newton formula, it can be known that the relationship among the object distance, the image distance, and the effective focal length of the optical lens 10 satisfies:

[0190] 1 / U + 1 / V = 1 / F1 (Formula 3);

[0191] As shown in Fig. 7 (1) and (2), when the object moves right by △U, the positions of the first front lens group G01, the first rear lens group G1, and the second rear lens group G2 remain unchanged, and the image plane IMA (i.e., the focal plane) of the optical lens 10 moves right by △V;

[0192] 1 / (U-△U) + 1 / (V+△V) = 1 / F1;

[0193] △V / △U = (V / U) 2 ≈(F1 / U) 2 ; wherein the condition of (V / U) 2 ≈(F1 / U) 2 is that the absolute value of the object distance is much greater than the absolute value of the focal length, i.e., |U| >> |F1|.

[0194] It can be obtained that the image plane IMA of the optical lens 10 moves right by △V = △U(F1 / U)2 (Formula 4);

[0195] As Fig. 6 shown in (2) of FIG. 4, when the object moves right by △U, the object distance from the object plane to the main plane of the first front lens group G01 is U0, the positions of the first front lens group G0, the first rear lens group G1 and the second rear lens group G2 remain unchanged, and the image m1 formed by the first front lens group G01 and the first rear lens group G1 moves right by:

[0196] △U(f g01 / U 01 ) 2 =△U(f g01 / U0) 2 (f g1 / U1) 2 (Formula 5);

[0197] wherein U1 represents the distance from the image m01 of the object after passing through the first front lens group G01 to the main plane of the first rear lens group G1; U 01 represents the distance from the object plane of the object to the main plane of the combined system of the first front lens group G01 and the first rear lens group G1. As Fig. 7 shown in (3) of FIG. 4, when the object moves right by △U, the positions of the first front lens group G01, the second rear lens group G2 and the image plane IMA of the optical system remain unchanged, and the first rear lens group G1 moves left by △X;

[0198] The image m01 formed by the first front lens group G01 moves right by △U(f g01 / U0) 2 ;

[0199] The image m1 formed by the first rear lens group G1 from the image m1 remains unchanged, i.e.:

[0200] [△U(f g01 / U0) 2 +△X]·(f g1 / U1) 2 -△X=0 (Formula 6);

[0201] Under the premise that the object distance (absolute value) of the object is much greater than the focal length (absolute value), U0≈U 01 ≈U;

[0202] From Formulas 2-6, it can be obtained that: ξ1=△V / △X=[1-(f g011 / f g01 ) 2 ](F1 / f g011 ) 2 =[1-β1 2]α1 2 ;

[0203] From the formula for ξ1, it can be seen that the magnitude of ξ1 is related to f. g011 f g01 Related to F1.

[0204] As shown in Equation 2, the stroke compression ratio coefficient is the change in image distance caused by the movement of the focusing lens group per unit distance. The larger the stroke compression ratio coefficient, the larger the change in image distance caused by the movement of the focusing lens group per unit distance. During focusing, with a constant change in image distance, a larger stroke compression ratio coefficient results in a smaller focusing stroke ΔX; conversely, a smaller stroke compression ratio coefficient results in a larger focusing stroke ΔX. The physical meaning of the stroke compression ratio coefficient is to characterize the scheme of using the first rear lens group G1 as the focusing lens group (e.g.,...) as a physical parameter. Fig. 6 and Fig. 7 The ratio of the focusing travel of the scheme (i.e., the internal focusing scheme) to the focusing travel of the scheme in which the first front lens group G01, the first rear lens group G1, and the second rear lens group G2 move together for focusing. The value of the scheme in which the first rear lens group G1 is used as the focusing lens group is that it has a shorter focusing travel than the scheme in which the first front lens group G01, the first rear lens group G1, and the second rear lens group G2 move together for focusing.

[0205] Similarly, when the optical lens 10 is in telephoto mode, the stroke compression ratio coefficient ξ2=[1-β2] 2 ]α2 2 .

[0206] In some embodiments, such as Fig. 6 As shown, the effective focal length f of the first front lens group G01 g01 The combined focal length f of the first front lens group G01 and the first rear lens group G1 g011 The condition must satisfy: 0 < β1 ≤ 0.5; for example, β1 can be 0.364, 0.367, 0.370, 0.447, etc. Where β1 = f g011 / f g01 .

[0207] From the relation ξ1=[1-β1 2 ]α1 2 It can be seen that the stroke compression ratio coefficient ξ1 is inversely proportional to the size of β1. By setting β1 to 0 < β1 ≤ 0.5, we can avoid β1 being too large, thereby avoiding the stroke compression ratio coefficient ξ1 being too small. This is beneficial to reducing the focusing stroke of the first rear lens group G1 and reducing the size of the focusing motor.

[0208] In some embodiments, such as Fig. 7 As shown, the effective focal length f of the second front lens group G02 g02The combined focal length f of the second front lens group G02 and the first rear lens group G1 g021 satisfies: 0 < β2≤ 0.5; for example, β2may be 0.416, 0.439, 0.453, 0.464, 0.448, etc. Wherein, β2= f g021 / f g02 .

[0209] From the relationship formula ξ2= [1-β2 2 ]α2 2 It can be known that the stroke compression ratio coefficient ξ2is inversely proportional to the size of β2, by setting β2as 0 < β2≤ 0.5, it can be avoided that β2is too large, so as to avoid that the stroke compression ratio coefficient ξ2is too small, which is beneficial to reduce the focusing stroke of the first rear lens group G1, and is beneficial to reduce the volume of the focusing motor.

[0210] In some embodiments, as shown in Fig. 6 , the effective focal length f of the first front lens group G01 g01 , the combined focal length f of the first front lens group G01 and the first rear lens group G1 g011 satisfies: 0.75 ≤ 1-β1 2 < 1; wherein, β1= f g011 / f g01 .

[0211] From the relationship formula ξ1= [1-β1 2 ]α1 2 It can be known that the stroke compression ratio coefficient ξ1is proportional to the size of 1-β1 2 , by setting 1-β1 2 as 0.75 ≤ 1-β1 2 < 1, it can be avoided that 1-β1 2 is too large or too small, so as to avoid that the stroke compression ratio coefficient ξ1is too large or too small, which can not only reduce the focusing stroke of the first rear lens group G1, and is beneficial to reduce the volume of the focusing motor, but also can avoid that the focusing stroke of the first rear lens group G1 is too short, reduce the precision requirement of the focusing motor, and is beneficial to reduce the cost.

[0212] In some embodiments, as shown in Fig. 7 , the effective focal length f of the second front lens group G02 g02 , the combined focal length f of the second front lens group G02 and the first rear lens group G1 g021 satisfies: 0.75 ≤ 1-β2 2 < 1; wherein, β2= f g021 / f g02 .

[0213] From the relationship formula ξ2= [1-β2 2 ]α2 2It can be seen that the stroke compression ratio coefficient ξ2 and 1-β2 2 The magnitude is proportional to the value of 1-β2. 2 Set to 0.75≤1-β2 2 <1, thus avoiding 1-β2 2 The coefficient of friction is neither too large nor too small, thus avoiding an excessively large or too small stroke compression ratio coefficient ξ2. This can reduce the focusing stroke of the first rear lens group G1, which is beneficial for reducing the size of the focusing motor; it can also avoid the focusing stroke of the first rear lens group G1 being too short, which reduces the accuracy requirements of the focusing motor and helps to reduce costs.

[0214] In some embodiments, such as Fig. 6 As shown, the combined focal length f of the first front lens group G01 and the first rear lens group G1 is... g011 The first effective focal length F1 satisfies: 0 < α1 ≤ 2; for example, α1 can be 1.611, 1.706, 1.620, 1.620, 1.662, etc. Where α1 = F1 / f g011 .

[0215] From the relation ξ1=[1-β1 2 ]α1 2 It can be seen that the stroke compression ratio coefficient ξ1 is proportional to α1. By setting α1 to 0 < α1 ≤ 2, we can avoid α1 being too large, thereby avoiding the stroke compression ratio coefficient ξ1 being too large. This can reduce the accuracy requirements of the focusing motor and help reduce costs.

[0216] In some embodiments, such as Fig. 7 As shown, the combined focal length f of the second front lens group G02 and the first rear lens group G1 is... g021 The second effective focal length F2 satisfies: 0 < α2 ≤ 2; for example, α2 can be 1.655, 1.710, 1.661, 1.622, 1.663, etc. Where α2 = F2 / f g021 .

[0217] From the relation ξ2=[1-β2 2 ]α2 2 It can be seen that the stroke compression ratio coefficient ξ2 is proportional to α2. By setting α2 to 0 < α2 ≤ 2, we can avoid α2 being too large, thereby avoiding the stroke compression ratio coefficient ξ2 being too large. This can reduce the accuracy requirements of the focusing motor and help reduce costs.

[0218] In some embodiments, such as Fig. 6 and Fig. 7 As shown, the optical power of the first front lens group G01, the second front lens group G02, and the first rear lens group G1 are all positive; the optical power of the second rear lens group G2 is negative.

[0219] By setting the focal power of the first front lens group G01 and the second front lens group G02 as positive, the first front lens group G01 and the second front lens group G02 play a role of focusing on the light beam, which reduces the diameter of the light beam, thereby facilitating the reduction of the diameter of the first rear lens group G1 and the second rear lens group G2. By setting the focal power of the first rear lens group G1 and the second rear lens group G2 as positive and negative, the partial aberration can be offset, thereby facilitating the reduction of the aberration of the optical lens 10 and ensuring the imaging quality of the optical lens 10.

[0220] Of course, the focal power of the first rear lens group G1 and the second rear lens group G2 are mutually adjusted, i.e., the focal power of the first rear lens group G1 is negative, and the focal power of the second rear lens group G2 is positive.

[0221] In some embodiments, as shown in Figs. 1A and 1B, the first front lens group G01 and the second front lens group G02 each include one positive lens, specifically, the first front lens group G01 includes a positive lens L011, and the second front lens group G02 includes a positive lens L021. Fig. 6 and Fig. 6 In some embodiments, as shown in Figs. 1A and 1B, the first front lens group G01 and the second front lens group G02 each include one positive lens, specifically, the first front lens group G01 includes a positive lens L011, and the second front lens group G02 includes a positive lens L021.

[0222] The first rear lens group G1 includes, in the direction from the object side to the image side, a first lens L11, a second lens L12 and a third lens L13, the first lens L11 and the third lens L13 each have positive focal power, and the second lens L12 has negative focal power; and the first lens L11, the second lens L12 and the third lens L13 have gaps between any two adjacent lenses.

[0223] The second rear lens group G2 includes, in the direction from the object side to the image side, a fourth lens L21 and a fifth lens L22, the fourth lens L21 and the fifth lens L22 each have negative focal power, and the fourth lens L21 and the fifth lens L22 have a gap therebetween.

[0224] By setting the focal power of the lenses in the first lens group G1 as positive, negative and positive, it is more conducive to correcting the aberration of the optical lens 10. Since the first lens L11, the second lens L12 and the third lens L13 have gaps between any two adjacent lenses, the number of surfaces of the lenses in the first rear lens group G1 is increased, the degree of freedom in the design of the first rear lens group G1 is increased, and the aberration of the optical lens 10 is corrected.

[0225] By setting the focal power of the lenses in the second rear lens group G2 as negative and negative, it is conducive to balancing the focal power of the optical lens 10. Since the fourth lens L21 and the fifth lens L22 have a gap therebetween, the number of surfaces of the lenses in the second rear lens group G2 is increased, the degree of freedom in the design of the second rear lens group G2 is increased, and the aberration of the optical lens 10 is corrected.

[0226] Of course, the fourth lens L21 can have positive refractive power in addition to negative refractive power, so that the lenses in the second rear lens group G2 have positive and negative refractive power in a positive-negative combination, which is conducive to the cancellation of positive and negative aberrations, thereby being conducive to correcting the aberrations of the optical lens 10.

[0227] In some embodiments, as shown in Fig. 6 and Fig. 6 , the first turning element 1 is a prism, the first turning element 1 includes a first incident surface 11, a first exit surface 12, and a first reflection surface 13, the first incident surface 11 is arranged towards the side where the front lens group G0 is located, the first exit surface 12 is arranged towards the side where the first rear lens group G1 is located, and the first reflection surface 13 is used to reflect the light beam entering the inside of the first turning element 1 from the first incident surface 11 to the first exit surface 12.

[0228] In some embodiments, as shown in Fig. 10 and Fig. 10 , the first turning element 1 is a right-angle prism, the angle between the first incident surface 11 and the first exit surface 12 is a right angle, and the angle between the first reflection surface 13 and the optical axis of the first rear lens group G1 is an acute angle, such as 45°.

[0229] Of course, the first turning element 1 can be a mirror in addition to being a prism.

[0230] In some embodiments, as shown in Fig. 7 , the optical lens 10 further includes a first fixed barrel 41, the first rear lens group G1 is arranged in the first fixed barrel 41, and a blocking ring 51 is arranged between any two adjacent lenses of the first lens group G1. One end of the first fixed barrel 41 is provided with a limiting flange 411, and the other end is provided with a pressing ring 52, and the limiting flange 411 and the pressing ring 52 limit the first rear lens group G1 in the first fixed barrel 41.

[0231] In some embodiments, as shown in Fig. 10 , an optical barrier 53 is arranged at the edge of at least one of the first lens L11, the second lens L12, and the third lens L13 to eliminate stray light at the edge of the first lens group G1. The optical barrier 53 can be arranged at the edge of the second lens L12.

[0232] In some embodiments, as shown in Fig. 10 , the optical lens 10 further includes a second fixed barrel 42, the second rear lens group G2 is arranged in the second fixed barrel 42, and a blocking ring 51 is arranged between the fourth lens L21 and the fifth lens L22.

[0233] In some embodiments, as shown in Fig. 10As shown, the edge of at least one of the fourth lens L21 and the fifth lens L22 is provided with a light shielding ring 53 to eliminate stray light at the edge of the second rear lens group G2. For example, the light shielding ring 53 can be respectively arranged at the edge of the fourth lens L21 and the fifth lens L24.

[0234] Fig. 11 A structure schematic diagram of the optical lens 10 in the long-focus state in the second embodiment of the present application. Fig. 11 The optical lens 10 shown in the figure is different from the optical lens 10 shown in the figure Fig. 10 The main difference between the optical lens 10 shown in the figure Fig. 11 The optical lens 10 in the figure adds a second turning element 3, which is described as follows:

[0235] As shown in the figure Fig. 11 The optical lens 10 further includes a second turning element 3, which is arranged on the image side of the second rear lens group G2. The second turning element 3 is a prism and has a prism entrance surface 31, a prism exit surface 32, and a prism reflection surface 33. The prism entrance surface 31 is arranged towards the side where the second rear lens group G2 is located. The prism exit surface 32 is arranged towards the side where the image plane of the optical lens 10 is located. The prism exit surface 32 is parallel to the optical axis of the second rear lens group G2. The prism reflection surface 33 is used to reflect the light beam entering the second turning element 3 from the prism entrance surface 31 to the prism exit surface 32.

[0236] By arranging the second turning element 3, the optical path of the optical lens 10 can be folded to reduce the size of the optical lens 10 in the first direction X, so that the occupied space of the optical lens 10 in the electronic device can be reduced. At the same time, it is beneficial to control the size of the photosensitive surface (i.e. the image plane) of the photosensitive element 20 in the first direction X. The photosensitive surface of the photosensitive element 20 can be designed to be larger, thereby reducing the occupied space of the photosensitive element 20 in the thickness direction Y of the electronic device.

[0237] In some embodiments, as shown in the figure Fig. 11 The second turning element 3 is a right-angle prism, and the included angle between the prism entrance surface 31 and the prism exit surface 32 is a right angle. The included angle between the prism reflection surface 33 and the optical axis of the second rear lens group G2 is an acute angle, such as 45°.

[0238] Of course, the second turning element 3 can be a mirror in addition to being a prism.

[0239] Fig. 12 A structure schematic diagram of the optical lens 10 in the long-focus state in the third embodiment of the present application. Fig. 12 The optical lens 10 shown in the figure is different from the optical lens 10 shown in the figure Fig. 7The main difference in the optical lens 10 shown is that the prism exit surface 32 of the second reversing element 3 is tilted relative to the optical axis of the second rear lens group G2, as described below:

[0240] like Fig. 12 As shown, the second turning element 3 is a prism, and has a prism incident surface 31 and a prism exit surface 32. The prism incident surface 31 is set towards the side where the second rear lens group G2 is located, and the prism exit surface 32 is set towards the side where the image plane of the optical lens 10 is located. The prism exit surface 32 is tilted relative to the optical axis of the second rear lens group G2. For example, the angle between the prism exit surface 32 and the optical axis of the second rear lens group G2 can be 45°.

[0241] By tilting the prism exit surface 32 relative to the optical axis of the second rear lens group G2, the photosensitive element 3 also needs to be tilted relative to the optical axis of the second rear lens group G2 in order to receive the emitted light beam from the second deflection element 3. This reduces the size of the photosensitive element 3 in the second direction Y (i.e., the thickness direction of the electronic device), making the structure of the camera module 100 more compact and helping to reduce the thickness of the electronic device.

[0242] In some embodiments, such as Fig. 12 As shown, the second deflection element 3 is a double-reflection prism, which has a prism reflecting surface 33 connected between the prism incident surface 31 and the prism exit surface 32. The prism exit surface 32 is both a refracting surface and a reflecting surface. The light beam entering the second deflection element 3 from the prism incident surface 31 undergoes two reflections, one from the prism exit surface 32 and the other from the prism reflecting surface 33, before exiting the second deflection element 3 from the prism exit surface 32.

[0243] Among them, such as Fig. 13 As shown, the first included angle θ1 between the prism exit surface 32 and the prism incident surface 31 is an acute angle, for example, the first included angle is 45°; the second included angle θ2 between the prism exit surface 32 and the prism reflecting surface 33 is an acute angle, for example, the second included angle is 30°; the third included angle θ3 between the prism incident surface 31 and the prism reflecting surface 33 is an obtuse angle, for example, the third included angle is 105°.

[0244] Of course, the second turning element 3 is not limited to a secondary reflection prism, but can also be a tertiary reflection prism, a quaternary reflection prism, etc., without specific limitations here.

[0245] Fig. 13 This is a schematic diagram of the optical lens 10 in the fourth embodiment of this application when it is in telephoto mode. Fig. 10 The optical lens 10 shown is Fig. 13 The main difference in the optical lens 10 shown is that the front lens group G0 is different, as described below:

[0246] As shown in Fig. 8 The front lens group G0 further includes a third front lens group G03, which is disposed between the first front lens group G01 and the second front lens group G02. The first folding element 1 further has a third position, when the first folding element 1 is located at the third position, the first folding element 1 is located on the image side of the third front lens group G03, the optical lens 10 has a third effective focal length F3, and F1 < F3 < F2, that is, the optical lens 10 is in a medium focal state. In this way, the zoom range of the optical lens 10 can be increased, thereby facilitating improvement of the zoom performance of the optical lens 10.

[0247] In some embodiments, as shown in Fig. 14a The first front lens group G01 includes one positive lens (i.e., the positive lens L011), the second front lens group G02 includes two positive lenses (i.e., the positive lens L021 and the positive lens L022), and the two positive lenses in the second front lens group G02 are disposed apart from each other. The third front lens group G03 includes one positive lens (i.e., the positive lens L031).

[0248] Since the second front lens group G02 includes two positive lenses disposed apart from each other, the number of surfaces of the lenses in the second front lens group G02 can be increased, and the degree of freedom in design of the second front lens group G02 is increased, thereby facilitating correction of aberration of the optical lens 10.

[0249] Fig. 14b A structure schematic diagram of the optical lens 10 in the long focal state in the fourth embodiment of the present application. Fig. 14a The main difference between the optical lens 10 shown in Fig. 14b The main difference between the optical lens 10 shown in

[0250] As shown in Fig. 6 The second rear lens group G2 and the first rear lens group G1 are relatively fixed to form a rear lens group G10, the rear lens group G10 is a movable lens group and can move relative to the front lens group G0 along the first direction X. In this way, when the optical lens 10 is switched between focusing on a distant scene and focusing on a close scene, the rear lens group G10 can move along the first direction X to realize internal focusing of the optical lens 10. In addition, when the first folding element 1 moves between the first position and the second position, the rear lens group G10 can move along the first direction X, for example Fig. 7 As shown in

[0251] Fig. 14aThis is a schematic diagram of the optical lens 10 in the fifth embodiment of this application when it is in a short focal length state. Fig. 14b This is a schematic diagram of the optical lens 10 in the fifth embodiment of this application when it is in telephoto mode. Fig. 14a , Fig. 14b The optical lens 10 shown is Fig. 14a , Fig. 14a The main difference of the optical lens 10 shown is: Fig. 14b , Fig. 14b The optical lens 10 shown is equipped with a light-shielding device 2, as described below:

[0252] like Fig. 14a and Fig. 14b As shown, the object side of the first turning element 1 is provided with a light-shielding device 2, such as... Fig. 14a As shown, when the first deflection element 1 is in the first position, the light-blocking device 2 is used to block the light beam (i.e., the first light beam) incident on the image side of the second front lens group G02. This first light beam can be the incident light beam of the second front lens group G02 (e.g.,...). Fig. 14b (As shown), it can also be the output beam of the second front lens group G02, or the beam between the lenses of the second front lens group G02.

[0253] like Fig. 14a As shown, when the first deflection element 1 is in the second position, the light-blocking device 2 is used to block the light beam (i.e., the second light beam) incident on the image side of the first front lens group G01. This second light beam can be the incident light beam of the first front lens group G01 (such as...). Fig. 14b (As shown), it can also be the emitted beam of the first front lens group G01, or the beam between the lenses of the first front lens group G01.

[0254] By setting up the light-shielding device 2, such that... Fig. 14c As shown, when the first turning element 1 is in the first position, the light-blocking device 2 can prevent the light beam from entering the interior of the optical lens 1 from the second front lens group G02, thereby avoiding the generation of stray light that would affect the imaging quality of the optical lens 10 in the short focal length state; as Fig. 14d As shown, when the first turning element 1 is in the second position, the light-blocking device 2 can prevent the light beam from entering the interior of the optical lens 1 from the first front lens group G01, thereby avoiding the generation of stray light that would affect the imaging quality of the optical lens 10 when it is in telephoto mode.

[0255] In some embodiments, such as Fig. 14c and Fig. 14d As shown, the light-shielding device 2 includes a first variable aperture stop 21 and a second variable aperture stop 22. The first variable aperture stop 21 is disposed on the object side of the first front lens group G01, and the second variable aperture stop 22 is disposed on the object side of the second front lens group G02.

[0256] As shown in Fig. 14a , when the first turning element 1 is located at the first position, the first variable aperture stop 21 is in an open state, and the second variable aperture stop 22 is in a closed state to shield the incident light beam of the second front lens group G02; as shown in Fig. 14b , when the first turning element 1 is located at the second position, the first variable aperture stop 21 is in a closed state to shield the incident light beam of the first front lens group G01, and the second variable aperture stop 22 is in an open state.

[0257] In this way, the light shielding device 2 not only can avoid stray light of the optical lens 10, but also can accurately control the light quantity of the optical lens 10 according to the brightness of the object when the first turning element 1 is located at the first position, thereby being beneficial to improve the imaging quality of the optical lens 10 in the short-focus state; when the first turning element 1 is located at the second position, the second variable aperture stop 22 can accurately control the light quantity of the optical lens 10 according to the brightness of the object, thereby being beneficial to improve the imaging quality of the optical lens 10 in the long-focus state.

[0258] The first variable aperture stop 21 can be arranged on the image side of the first front lens group G01, or between the lenses of the first front lens group G01, in addition to being arranged on the object side of the first front lens group G01; the second variable aperture stop 22 can be arranged on the image side of the second front lens group G02, or between the lenses of the second front lens group G02, in addition to being arranged on the object side of the second front lens group G02.

[0259] Fig. 14c Fig. 6 is a structural schematic view of the optical lens 10 in the short-focus state in the sixth embodiment of the present application, Fig. 14d Fig. 7 is a structural schematic view of the optical lens 10 in the long-focus state in the sixth embodiment of the present application. Fig. 14c 、 Fig. 14d The main difference between the optical lens 10 shown in Fig. 1 and the optical lens 10 shown in Fig. 15a 、 Fig. 15b lies in the structure of the light shielding device 2, which is described as follows:

[0260] As shown in Fig. 15a and Fig. 15b , the light shielding device 2 includes a shielding plate 23; the shielding plate 23 is arranged on the image side of the front lens group G0 and can move relative to the front lens group G0, as shown in Fig. 15a , when the first turning element 1 is located at the first position, the shielding plate 23 moves to the image side of the second front lens group G02 to shield the outgoing light beam of the second front lens group G02; as shown in Fig. 15bAs shown, when the first turning element 1 is in the second position, the shielding plate 23 moves to the image side of the first front lens group G01 to block the emitted light beam of the first front lens group G01.

[0261] By setting the light-shielding device 2 as a movable shield 23, the shield 23 can block the emitted light beam of the first front lens group G01 or the second front lens group G02 by moving. This eliminates the need to set shields 23 at the positions of the first front lens group G01 and the second front lens group G02 respectively, which helps to simplify the structure of the light-shielding device 2 and thus helps to reduce the cost of the optical lens 10.

[0262] In addition to being disposed on the image side of the front lens group G0, the shield 23 can also be disposed on the object side of the front lens group G0. Specifically, the shield 23 is disposed on the object side of the front lens group G0 and can move relative to the front lens group G0. When the first bending element 1 is in the first position, the shield 23 moves to the object side of the second front lens group G02 to block the incident light beam of the second front lens group G02. When the first bending element 1 is in the second position, the shield 23 moves to the object side of the first front lens group G01 to block the incident light beam of the first front lens group G01.

[0263] Fig. 10 This is a schematic diagram of the optical lens 10 in the short focal length state according to the seventh embodiment of this application. Fig. 15a This is a schematic diagram of the optical lens 10 in the telephoto state according to the seventh embodiment of this application. Fig. 15b and Fig. 15a The optical paths of the first transition element 1 and the second transition element 3 are both unfolded and replaced by parallel plates. Fig. 15b , Fig. 15a The optical lens 10 shown is Fig. 15b The main difference in the optical lens 10 shown is that the composition of the second rear lens group G2 is different, as described below:

[0264] like Fig. 15a and Fig. 15b As shown, the fifth lens L22 includes a positive lens L221 and a negative lens L222 spaced apart. The combined optical power of the positive lens L221 and the negative lens L222 is negative. This arrangement is equivalent to splitting the fifth lens L22 into a positive lens L221 and a negative lens L222. This increases the number of lens surfaces in the second rear lens group G2, increasing the design freedom of the second rear lens group G2, and thus facilitating the correction of optical lens aberrations.

[0265] Among them, such as Fig. 15a and Fig. 15bAs shown, the positive lens L221 can be disposed between the fourth lens L21 and the negative lens L222, but is not limited thereto, and the negative lens L222 can be disposed between the positive lens L221 and the fourth lens L21.

[0266] In some embodiments, as shown in Face No. and Parameter , the positive lens L221 and the negative lens L222 have an air gap therebetween. Of course, the medium between the positive lens L221 and the negative lens L222 is not limited to air, but can also be other media, such as nitrogen, a glue layer, etc.

[0267] In some embodiments, as shown in ImgH and Value , the first front lens group G01 includes one positive lens L011, and the second front lens group G02 includes one positive lens L021 and one negative lens L022 along the direction from the object side to the image side. By adopting the positive and negative combination of the optical power of the lenses in the second front lens group G02, the positive and negative aberrations can be offset, thereby facilitating the improvement of the imaging quality of the optical lens 10.

[0268] The optical lens 10 shown in Unit and mm will be specifically described below in combination with specific parameters and simulation results.

[0269] As shown in Tables 1.1-1.4, Table 1.1 shows the main parameters of the optical lens 10 in the seventh embodiment of the present application in the short-focus state, Table 1.2 shows the main parameters of the optical lens 10 in the seventh embodiment of the present application in the long-focus state; Table 1.3 shows the aspheric surface coefficients of each surface of the optical element of the optical lens 10 in the seventh embodiment of the present application in the short-focus state; and Table 1.4 shows the aspheric surface coefficients of each surface of the optical element of the optical lens 10 in the seventh embodiment of the present application in the long-focus state.

[0270] Table 1.1 Main parameters of the optical lens 10 in the seventh embodiment of the present application in the short-focus state

[0271]

[0272] The unit of the parameter values of the radius of curvature, the thickness, and the clear aperture radius in the table is mm.

[0273] S1 represents the object side surface of the positive lens L011, S2 represents the image side surface of the positive lens L011. PRISM1 represents the first turning element 1, which is a prism and has the function of light turning; S3 represents the first light entrance surface 11 of the first turning element 1, S4 represents the first light exit surface 12 of the first turning element 1; S6 represents the object side surface of the first lens L11, S9 represents the image side surface of the first lens L11. S10 represents the object side surface of the second lens L12, S11 represents the image side surface of the second lens L12. S12 represents the object side surface of the third lens L13, S13 represents the image side surface of the third lens L13. S14 represents the object side surface of the fourth lens L21, S15 represents the image side surface of the fourth lens L21. S16 represents the object side surface of the positive lens L221, S17 represents the image side surface of the positive lens L221. S18 represents the object side surface of the negative lens L222, S19 represents the image side surface of the negative lens L222. PRISM2 represents the second turning element 3, which is a prism and has the function of light turning; S20 represents the prism entrance surface 31 of the second turning element 3; S21 represents the prism exit surface 32 of the second turning element 3; IRCF represents the filter, which is an infrared filter, S22 is the object side surface of the filter, and S23 is the image side surface of the filter; IMA represents the image plane IMAGE, which can be the photosensitive surface of a photosensitive element.

[0274] The surface number S in the thickness parameter column in the table n The meaning of the corresponding numerical value is the surface number S n The surface to the surface number S n+1 The distance of the surface on the optical axis; the rules for the positive and negative signs in front of the thickness parameters are as follows: the vertex (intersection with the optical axis) of the surface S n is taken as the calculation origin, and the vertex of the surface S n+1 is taken as the calculation origin, and the vertex of the surface S

[0275] The curvature radius in the table is the curvature radius of the surface corresponding to the surface number on the optical axis; the rules for the positive and negative signs in front of the curvature radius parameters are as follows: the vertex of the surface S n is taken as the calculation origin, and the vertex of the surface S n The curvature radius is 0.00E+00, which represents that the surface corresponding to the parameter is a plane, and the curvature radius is infinite.

[0276] It should be noted that the rules for the positive and negative signs in front of the thickness parameters in the table, the rules for the positive and negative signs in front of the curvature radius parameters, and the meaning of the surface number S n in the thickness parameter column in the table also apply to the tables below.

[0277] Table 1.2 Main parameters of the optical lens 10 in the seventh embodiment of the application in the long focus state

[0278]

[0279]

[0280] The units of the parameter values of the radius of curvature, the thickness, and the clear aperture in the table are mm.

[0281] S1 represents the object-side surface of the positive lens L021, S2 represents the image-side surface of the positive lens L021; S3 represents the object-side surface of the negative lens L022, S4 represents the image-side surface of the negative lens L022; PRISM1 represents the first turning element 1, which is a prism and has a light ray turning function; S5 represents the first light entrance surface 11 of the first turning element 1, S6 represents the first light exit surface 12 of the first turning element 1; S8 represents the object-side surface of the first lens L11, S9 represents the image-side surface of the first lens L11. S10 represents the object-side surface of the second lens L12, S11 represents the image-side surface of the second lens L12. S12 represents the object-side surface of the third lens L13, S13 represents the image-side surface of the third lens L13. S14 represents the object-side surface of the fourth lens L21, S15 represents the image-side surface of the fourth lens L21. S16 represents the object-side surface of the positive lens L221, S17 represents the image-side surface of the positive lens L221. S18 represents the object-side surface of the negative lens L222, S19 represents the image-side surface of the negative lens L222. PRISM2 represents the second turning element 3, which is a prism and has a light ray turning function; S20 represents the prism entrance surface 31 of the second turning element 3; S21 represents the prism exit surface 32 of the second turning element 3; IRCF represents the filter, which is an infrared filter, S22 is the object-side surface of the filter, and S23 is the image-side surface of the filter; IMA represents the image plane IMAGE, which can be a light-sensing surface of a light-sensing element.

[0282] In some embodiments, the aspheric surface in the optical lens 10 can be defined by the following aspheric surface equation:

[0283]

[0284] wherein z is the relative distance of a point on the aspheric surface to the tangent plane at the intersection point on the optical axis; r is the vertical distance of the point on the aspheric curve to the optical axis; c is the curvature; K is the conic coefficient; A i is the aspheric coefficient of the i-th order, which can be specifically seen from Table 1.3 and Table 1.4.

[0285] Table 1.3 Aspheric coefficients of each surface of the optical element when the optical lens 10 in the seventh embodiment is in the short-focus state

[0286]

[0287]

[0288] Table 1.4 Aspherical surface coefficients of each surface of the optical lens 10 in the seventh embodiment of the present application when the optical lens 10 is in the long-focus state

[0289] mm K [A0] [A1] [A2] [A3] [A4] [A5] [A6] [A7] 0 0 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1 0 -1.45E-01 -1.12E-01 -6.60E-02 6.52E-03 2.54E-02 1.75E-03 2.77E-03 0.00E+00 2 0 -7.56E-02 -6.40E-02 -4.99E-02 -6.21E-04 1.65E-02 -4.51E-03 2.18E-03 0.00E+00 3 0 3.68E-02 1.03E-01 5.06E-02 -1.42E-02 -1.78E-02 5.71E-03 -3.92E-03 0.00E+00 4 0 -7.08E-02 2.10E-02 -2.44E-02 -5.90E-02 -4.12E-02 -1.96E-03 -8.24E-03 0.00E+00 5 0 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 6 0 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 7 0 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 8 0 -6.75E-01 -1.92E-01 -1.66E-02 1.74E-04 2.49E-03 8.27E-04 4.59E-05 0.00E+00 9 0 -8.52E-01 -2.26E-01 5.60E-02 -8.09E-03 2.23E-03 -7.87E-04 6.33E-04 0.00E+00 10 0 -9.85E-01 6.42E-02 3.34E-02 -1.63E-02 4.40E-03 -5.90E-04 4.77E-04 0.00E+00 11 0 -1.55E+00 5.21E-02 4.76E-03 -1.14E-02 6.64E-04 1.49E-05 3.38E-04 0.00E+00 12 0 -5.30E-01 2.45E-02 4.09E-02 8.45E-03 -2.28E-03 4.70E-04 2.80E-04 0.00E+00 13 0 -1.17E-01 2.70E-02 1.83E-02 7.22E-03 1.11E-03 5.76E-04 2.29E-04 0.00E+00 14 0 2.50E+00 -4.34E-02 5.18E-02 5.54E-03 5.90E-03 1.04E-03 1.01E-03 0.00E+00 15 0 2.55E+00 -1.38E-02 3.88E-02 -3.19E-03 1.76E-03 -2.28E-03 6.37E-04 0.00E+00 16 0 -6.57E-01 2.12E-01 -1.11E-02 -1.89E-04 -1.35E-03 -4.64E-03 4.03E-04 0.00E+00 17 0 -7.20E-01 1.78E-01 -1.16E-02 6.62E-03 3.28E-03 -2.42E-03 3.89E-04 0.00E+00 18 0 -1.18E+00 4.49E-03 -3.04E-02 -1.25E-02 2.00E-04 -3.26E-03 5.11E-04 0.00E+00 19 0 -2.54E+00 1.56E-01 -4.93E-02 4.93E-03 1.75E-03 3.08E-05 8.61E-04 0.00E+00 20 0 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 21 0 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 22 0 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 23 0 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 24 0 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 25 0 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[0290] As shown in Table 1.5, Table 1.6 and Table 1.7, Table 1.5 shows the basic parameters of the optical path of the optical lens 10 in the seventh embodiment of the present application when the optical lens 10 is in the short-focus state, Table 1.6 shows the basic parameters of the optical path of the optical lens 10 in the seventh embodiment of the present application when the optical lens 10 is in the long-focus state, and Table 1.7 shows the related parameters of the optical lens 10 in the seventh embodiment of the present application and the ξ value;

[0291] Table 1.5 Basic parameters of the optical path of the optical lens 10 in the seventh embodiment of the present application when the optical lens 10 is in the short-focus state

[0292] mm mm [F1] F / # f L011 ]]> f L11 ]]> f L12 ]]> f L13 ]]> f 21 ]]> f L221 ]]> f L222 ]]> mm 6.000 22.787 2.000 38.846 42.527 -17.547 9.777 51.856 48.207 -9.266 mm mm mm mm mm Parameter ImgH Value Unit mm mm

[0293] Table 1.6 Basic parameters of the optical path of the optical lens 10 in the seventh embodiment of the present application when the optical lens 10 is in the long-focus state

[0294] mm mm F2 F / # f L021 ]]> f L022 ]]> f L11 ]]> f L12 ]]> f L13 ]]> f L21 ]]> f L221 ]]> f L222 ]]> mm 3.000 29.947 3.080 35.015 -177.934 42.527 -17.547 9.777 51.856 48.207 -9.266 mm mm mm mm mm mm Fig. 15c Fig. 15d Fig. 15e Fig. 15f Fig. 15c-15f Fig. 15c

[0295] Table 1.7 Related parameters of the optical lens 10 in the seventh embodiment of the present application and the ξ value; wherein the object distance is INIFINITY (infinity)

[0296]

[0297] In Table 1.5 to Table 1.7, F1 is the first effective focal length of the optical lens 10; F2 is the second effective focal length of the optical lens 10; f L011 is the focal length of the positive lens L011; f L021 is the focal length of the positive lens L021; f L022 is the focal length of the negative lens L022; f L11 is the focal length of the first lens L11, f L12 is the focal length of the second lens L12, f L13 is the focal length of the third lens L13, f L21 is the focal length of the fourth lens L21, f L221 is the focal length of the positive lens L221, f L222 is the focal length of the negative lens L222, f g01 is the effective focal length of the first front lens group G01, f g02 is the effective focal length of the second front lens group G02, f g1f is the effective focal length of the first rear lens group G1. g2 f is the effective focal length of the second rear lens group G2. g011 f is the combined focal length of the first front lens group G01 and the first rear lens group G1. g021 β1 is the combined focal length of the second front lens group G02 and the first rear lens group G1, and β1 is the first focal length allocation ratio, β1 = f g011 / f g01 β2 is the second focal length allocation ratio, β2 = f g021 / f g02 α1 is the third focal length allocation ratio, α1=F1 / f g011 α2 is the fourth focal length allocation ratio, α2 = F2 / f g021 ξ1 is the stroke compression ratio coefficient of the first rear lens group G1 when the optical lens 10 is in the short focal length state; ξ2 is the stroke compression ratio coefficient of the first rear lens group G1 when the optical lens 10 is in the long focal length state; L is the travel distance of the first pivot element 1 between the first position and the second position; coefficient k = [(β1-1)] 2 / β1]-[(β2-1) 2 / β2).

[0298] Fig. 15e This is the axial spherical aberration curve of the optical lens 10 in the seventh embodiment of this application when it is in a short focal length state. Fig. 15d The field curvature curve and distortion curve of the optical lens 10 in the seventh embodiment of this application when it is in a short focal length state; Fig. 15f This is the axial spherical aberration curve of the optical lens 10 in the seventh embodiment of this application when it is in telephoto mode. Fig. 15d The field curvature curve and distortion curve of the optical lens 10 in the seventh embodiment of this application when it is in telephoto mode. Fig. 15f The diagram shows axial spherical aberration curves, field curvature curves, and distortion curves corresponding to different wavelengths of the system (illustrated as 650nm, 610nm, 555nm, 510nm, 470nm, and 435nm).

[0299] The axial spherical aberration curve in the figure is used to illustrate the deviation of light of the corresponding wavelength emitted in a 0-degree field of view from the ideal image point after passing through the optical system; its horizontal axis is the deviation value along the optical axis, and its vertical axis is the normalized coordinate at the pupil. Fig. 16a and Fig. 16b The deviation values ​​are all small, indicating that the axial spherical aberration of the optical lens is well corrected.

[0300] The field curvature curves in the figure illustrate the deviation of the convergence point of the narrow beam from the ideal imaging plane in different fields of view. x represents the beam in the sagittal direction, and y represents the beam in the meridional direction. The horizontal axis represents the deviation value along the optical axis, and the vertical axis represents the corresponding field of view. When the value of a certain field of view is too large, the image quality of that field of view is poor or there are advanced aberrations.Fig. 16a and Fig. 16b The field curvatures in both directions are small, indicating that the system has good depth of focus.

[0301] The distortion curve in the figure is used to illustrate the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. Fig. 16a and Fig. 16b The deviation shown is small, which ensures that there is no obvious distortion in the image.

[0302] Therefore, the optical lens 10 in the seventh embodiment of this application achieves low light aberration control and obtains clear image quality through reasonable surface shape and gap design.

[0303] Fig. 10 This is a schematic diagram of the optical lens 10 in the eighth embodiment of this application when it is in a short focal length state. Fig. 16a This is a schematic diagram of the optical lens 10 in the telephoto state according to the eighth embodiment of this application. Fig. 16b and Fig. 16a The optical paths of the first transition element 1 and the second transition element 3 are both unfolded and replaced by parallel plates. Fig. 16b , Fig. 16a The optical lens 10 shown is Fig. 16b The main difference in the optical lens 10 shown is that the composition of the first rear lens group G1 is different, as described below:

[0304] like Fig. 16a and Fig. 16b As shown, the second lens L12 includes a positive lens L121 and a negative lens L122 spaced apart. The combined optical power of the positive lens L121 and the negative lens L122 is negative. This arrangement is equivalent to splitting the second lens L12 into a positive lens L121 and a negative lens L122. This increases the number of lens surfaces in the first rear lens group G1, increasing the design freedom of the first rear lens group G1, and thus facilitating the correction of optical lens aberrations.

[0305] Among them, such as Fig. 16a and Fig. 16b As shown, the positive lens L121 can be positioned between the first lens L11 and the negative lens L122, but it is not limited to this. The positive lens L121 can also be positioned between the third lens L13 and the negative lens L122.

[0306] In some embodiments, such as Parameter and ImgH As shown, there is an air gap between the positive lens L121 and the negative lens L122. Of course, the medium between the positive lens L121 and the negative lens L122 is not limited to air; it can also be other media, such as nitrogen or a gel layer.

[0307] In some embodiments, as shown in Value and Unit The first front lens group G01 includes a positive lens L011 and a negative lens L012 along the object side to image side direction; the second front lens group G02 includes a positive lens L021 and a negative lens L022 along the object side to image side direction. By adopting the positive and negative combination of the lens power of the lenses in the second front lens group G02, the positive and negative aberrations can be offset, thereby improving the imaging quality of the optical lens 10.

[0308] The optical lens 10 shown in mm and mm will be specifically described below in combination with specific parameters and simulation results.

[0309] As shown in Tables 2.1-2.4, Table 2.2 shows the main parameters of the optical lens 10 in the eighth embodiment of the present application in the short focus state, Table 2.3 shows the main parameters of the optical lens 10 in the eighth embodiment of the present application in the long focus state; Table 2.3 shows the aspheric coefficients of each surface of the optical elements of the optical lens 10 in the eighth embodiment of the present application in the short focus state; and Table 2.4 shows the aspheric coefficients of each surface of the optical elements of the optical lens 10 in the eighth embodiment of the present application in the long focus state.

[0310] Table 2.1 Main parameters of the optical lens 10 in the eighth embodiment of the present application in the short focus state

[0311]

[0312] The unit of the parameter values of the radius of curvature, thickness, and clear aperture in the table is mm. The radius of curvature INF represents that the surface corresponding to the parameter is a plane, and the radius of curvature is infinite.

[0313] S1 represents the object side surface of the positive lens L011, S2 represents the image side surface of the positive lens L011, S3 represents the object side surface of the negative lens L012, S4 represents the image side surface of the negative lens L012, PRISM1 represents the first turning element 1, which is a prism and has a light ray folding function; S5 represents the first light entrance surface 11 of the first turning element 1, S6 represents the first light exit surface 12 of the first turning element 1; S7 represents the object side surface of the first lens L11, S8 represents the image side surface of the first lens L11. S9 represents the object side surface of the positive lens L121, S10 represents the image side surface of the positive lens L121. S11 represents the object side surface of the negative lens L122, S12 represents the image side surface of the negative lens L122. S13 represents the object side surface of the third lens L13, S14 represents the image side surface of the third lens L13, S15 represents the object side surface of the fourth lens L21, S16 represents the image side surface of the fourth lens L21, S17 represents the object side surface of the fifth lens L22, S18 represents the image side surface of the fifth lens L22. PRISM2 represents the second turning element 3, which is a prism and has a light ray folding function; S19 represents the prism entrance surface 31 of the second turning element 3; S20 represents the prism exit surface 32 of the second turning element 3; IRCF represents the filter, which is an infrared filter, S21 is the object side surface of the filter, and S22 is the image side surface of the filter; IMA represents the image plane IMAGE, which can be the photosensitive surface of a photosensitive element.

[0314] Table 2.2 Main parameters of the optical lens 10 in the eighth embodiment of the present application in the long-focus state

[0315]

[0316] The units of the parameter values of the radius of curvature, the thickness and the clear aperture radius in the table are all mm. The radius of curvature INF represents that the surface corresponding to the parameter is a plane, and the radius of curvature is infinite.

[0317] S1 represents the object-side surface of positive lens L021, S2 represents the image-side surface of positive lens L021, S3 represents the object-side surface of negative lens L022, S4 represents the image-side surface of negative lens L022, PRISM1 represents the first prism element 1, which is a prism with light-reflecting function; S5 represents the first light-incident surface 11 of the first prism element 1, S6 represents the first light-exit surface 12 of the first prism element 1; S7 represents the object-side surface of first lens L11, S8 represents the image-side surface of first lens L11; S9 represents the object-side surface of positive lens L121, S10 represents the image-side surface of positive lens L121; S11 represents the object-side surface of negative lens L122, S12 represents the image-side surface of negative lens L122. S13 represents the object-side surface of the third lens L13, S14 represents the image-side surface of the third lens L13, S15 represents the object-side surface of the fourth lens L21, S16 represents the image-side surface of the fourth lens L21, S17 represents the object-side surface of the fifth lens L22, and S18 represents the image-side surface of the fifth lens L22. PRISM2 represents the second prism element 3, which is a prism with light-reflecting function; S19 represents the prism incident surface 31 of the second prism element 3; S20 represents the prism exit surface 32 of the second prism element 3; IRCF represents the filter, which is an infrared filter, S21 is the object-side surface of the filter, and S22 is the image-side surface of the filter; IMA represents the image plane, which can be the photosensitive surface of the photosensitive element.

[0318] Table 2.3 Aspherical coefficients of various surfaces of the optical elements when the optical lens 10 in the eighth embodiment of this application is in a short focal length state.

[0319]

[0320]

[0321] Table 2.4 Aspherical coefficients of various surfaces of the optical elements when the optical lens 10 in the eighth embodiment of this application is in telephoto mode.

[0322]

[0323]

[0324] As shown in Tables 2.5, 2.6 and 2.7, Table 2.5 shows the basic optical path parameters of the optical lens 10 in the short focal length state in the eighth embodiment of this application, Table 2.6 shows the basic optical path parameters of the optical lens 10 in the long focal length state in the eighth embodiment of this application, and Table 2.7 shows the relevant parameters and ξ value of the optical lens 10 in the eighth embodiment of this application.

[0325] Table 2.5 Basic parameters of the optical path when the optical lens 10 in the eighth embodiment of the present application is in a short-focus state

[0326] mm mm F1 F / # f L011 ]]> f L012 ]]> f L11 ]]> f L121 ]]> f L122 ]]> f L13 ]]> f L21 ]]> f L22 ]]> mm 6.000 22.9531 2.42 31.547 -219.945 28.655 -16.769 36.161 14.189 -31.394 -22.240 mm mm mm mm mm mm Parameter ImgH Value Unit mm mm

[0327] Table 2.6 Basic parameters of the optical path when the optical lens 10 in the eighth embodiment of the present application is in a long-focus state

[0328] mm mm F2 F / # f L021 ]]> f L022 ]]> f L11 ]]> f L121 ]]> f L122 ]]> f L13 ]]> f L21 ]]> f L22 ]]> mm 3.000 33.0574 3.46 39.164 -337.319 28.655 -16.769 36.161 14.189 -31.394 -22.240 mm mm mm mm mm mm Fig. 16c Fig. 16d Fig. 16c Fig. 16d Fig. 16c Fig. 16d

[0329] Table 2.7 Related parameters of the optical lens 10 in the eighth embodiment of the present application and the value of ξ; wherein the object distance is INIFINITY

[0330]

[0331] In Tables 2.5-2.7, F1 is the first effective focal length of the optical lens 10; F2 is the second effective focal length of the optical lens 10; f L011 is the focal length of the positive lens L011; f L012 is the focal length of the negative lens L012; f L021 is the focal length of the positive lens L021; f L022 is the focal length of the negative lens L022; f L11 is the focal length of the first lens L11, f L12 is the focal length of the second lens L12, f L13 is the focal length of the third lens L13, f L21 is the focal length of the fourth lens L21, f L221 is the focal length of the positive lens L221, f L222 is the focal length of the negative lens L222, f g01 is the effective focal length of the first front lens group G01, f g02 is the effective focal length of the second front lens group G02, f g1 is the effective focal length of the first rear lens group G1, f g2 is the effective focal length of the second rear lens group G2, f g011 is the combined focal length of the first front lens group G01 and the first rear lens group G1, f g021 is the combined focal length of the second front lens group G02 and the first rear lens group G1, β1 is the first focal length distribution ratio, β1 = f g011 / f g01 , β2 is the second focal length distribution ratio, β2 = f g021 / f g02 , α1 is the third focal length distribution ratio, α1 = F1 / f g011 ; α2 is the fourth focal length distribution ratio, α2 = F2 / f g021; xi is the stroke compression ratio coefficient of the first rear lens group G1 when the optical lens 10 is in the short-focus state, and x2 is the stroke compression ratio coefficient of the first rear lens group G1 when the optical lens 10 is in the long-focus state; L is the moving stroke of the first turning element 1 between the first position and the second position; the coefficient k = [(b1-1) 2 / b1]-[(b2-1) 2 / b2].

[0332] Fig. 16c is the axial spherical aberration curve, the field curvature curve and the distortion curve of the optical lens 10 in the eighth embodiment of the present application when the optical lens 10 is in the short-focus state, Fig. 16d is the axial spherical aberration curve, the field curvature curve and the distortion curve of the optical lens 10 in the eighth embodiment of the present application when the optical lens 10 is in the long-focus state; Fig. 16c and Fig. 16d The axial spherical aberration curve, the field curvature curve and the distortion curve corresponding to different wave bands (illustrated as including 650nm, 610nm, 555nm, 510nm, 470nm, 435nm) of the system are shown.

[0333] The axial spherical aberration curve in the figure is used to show that the light of the corresponding wavelength emitted at 0 degree field of view deviates from the ideal image point after passing through the optical system; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the normalized coordinate at the pupil. Fig. 17a and Fig. 17b The deviation values in the two directions are small, and the correction of the axial spherical aberration of the optical lens is good.

[0334] The field curvature curve in the figure is used to show the deviation of the converging points of the light beams of different fields of view from the ideal imaging surface, x is the sagittal direction light beam, and y is the meridional direction light beam; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the corresponding field of view. When a field of view value is too large, the image quality of the field of view is poor or there is high-order aberration. Fig. 17a and Fig. 17b The field curvatures in the two directions shown in the figure are small, and the system has good depth of focus.

[0335] The distortion curve in the figure is used to show the relative deviation amount of the converging points (actual image height) of the light beams of different fields of view from the ideal image height. Fig. 17a and Fig. 17b The deviation amount shown in the figure is small, which can ensure that the picture does not have obvious deformation.

[0336] Therefore, the optical lens 10 in the eighth embodiment of the present application realizes low light aberration control and obtains clear image quality through reasonable surface type and gap design.

[0337] Fig. 15a is a structural schematic view of the optical lens 10 in the ninth embodiment of the present application when the optical lens 10 is in the short-focus state, Fig. 15bFig. 9 is a structural schematic diagram of the optical lens 10 in the ninth embodiment of the present application in a long-focus state, Fig. 17a With Fig. 17b the optical path of the first folding element 1 and the second folding element 3 in both of which is unfolded, and a parallel flat is used instead. Parameter 、 ImgH The main difference between the optical lens 10 shown in Fig. 8 and the optical lens 10 shown in Fig. 9 is that the specific parameters of the optical lens 10 are different. Value 、 Unit The optical lens 10 shown in Fig. 8 and the optical lens 10 shown in Fig. 9 are specifically described below in combination with specific parameters and simulation results.

[0338] The optical lens 10 shown in Fig. 8 and the optical lens 10 shown in Fig. 9 are specifically described below in combination with specific parameters and simulation results. mm and mm The main difference between the optical lens 10 shown in Fig. 8 and the optical lens 10 shown in Fig. 9 is that the specific parameters of the optical lens 10 are different.

[0339] As shown in Tables 3.1-3.4, Table 3.1 shows the main parameters of the optical lens 10 in the ninth embodiment of the present application in a short-focus state, Table 3.2 shows the main parameters of the optical lens 10 in the ninth embodiment of the present application in a long-focus state; Table 3.3 shows the aspheric coefficients of each surface of the optical elements of the optical lens 10 in the ninth embodiment of the present application in a short-focus state; and Table 3.4 shows the aspheric coefficients of each surface of the optical elements of the optical lens 10 in the ninth embodiment of the present application in a long-focus state.

[0340] Table 3.1 Main parameters of the optical lens 10 in the ninth embodiment of the present application in a short-focus state

[0341]

[0342] The unit of the parameter values of the radius of curvature, the thickness, and the clear aperture radius in the table is mm. The radius of curvature INF represents that the surface corresponding to the parameter is a plane, and the radius of curvature is infinite.

[0343] S1 represents the object side surface of the positive lens L011, S2 represents the image side surface of the positive lens L011, S3 represents the object side surface of the negative lens L012, S4 represents the image side surface of the negative lens L012, PRISM1 represents the first turning element 1, which is a prism and has a light ray folding function; S5 represents the first light entrance surface 11 of the first turning element 1, S6 represents the first light exit surface 12 of the first turning element 1; S7 represents the object side surface of the first lens L11, S8 represents the image side surface of the first lens L11. S9 represents the object side surface of the positive lens L121, S10 represents the image side surface of the positive lens L121. S11 represents the object side surface of the negative lens L122, S12 represents the image side surface of the negative lens L122. S13 represents the object side surface of the third lens L13, S14 represents the image side surface of the third lens L13, S15 represents the object side surface of the fourth lens L21, S16 represents the image side surface of the fourth lens L21, S17 represents the object side surface of the fifth lens L22, S18 represents the image side surface of the fifth lens L22. PRISM2 represents the second turning element 3, which is a prism and has a light ray folding function; S19 represents the prism entrance surface 31 of the second turning element 3; S20 represents the prism exit surface 32 of the second turning element 3; IRCF represents the filter, which is an infrared filter, S21 is the object side surface of the filter, and S22 is the image side surface of the filter; IMA represents the image plane IMAGE, which can be the photosensitive surface of a photosensitive element.

[0344] Table 3.2 Main parameters of the optical lens 10 in the ninth embodiment of the present application in the long-focus state

[0345]

[0346] The units of the parameter values of the radius of curvature, the thickness, and the clear aperture radius in the table are mm. The radius of curvature INF represents that the surface corresponding to the parameter is a plane, and the radius of curvature is infinite.

[0347] S1 represents an object side surface of the positive lens L021, S2 represents an image side surface of the positive lens L021, S3 represents an object side surface of the negative lens L022, S4 represents an image side surface of the negative lens L022, PRISM1 represents a first turning element 1, the first turning element 1 is a prism and has a light turning function; S5 represents a first light incidence surface 11 of the first turning element 1, S6 represents a first light emission surface 12 of the first turning element 1; S7 represents an object side surface of the first lens L11, S8 represents an image side surface of the first lens L11. S9 represents an object side surface of the positive lens L121, S10 represents an image side surface of the positive lens L121. S11 represents an object side surface of the negative lens L122, S12 represents an image side surface of the negative lens L122. S13 represents an object side surface of the third lens L13, S14 represents an image side surface of the third lens L13, S15 represents an object side surface of the fourth lens L21, S16 represents an image side surface of the fourth lens L21, S17 represents an object side surface of the fifth lens L22, S18 represents an image side surface of the fifth lens L22. PRISM2 represents a second turning element 3, the second turning element 3 is a prism and has a light turning function; S19 represents a prism incidence surface 31 of the second turning element 3; S20 represents a prism emission surface 32 of the second turning element 3; IRCF represents a filter, the filter is an infrared filter, S21 is an object side surface of the filter, S22 is an image side surface of the filter; IMA represents an image plane IMAGE, the image plane IMAGE can be a photosensitive surface of a photosensitive element.

[0348] Table 3.3 Aspherical surface coefficients of each surface of the optical lens 10 in the ninth embodiment of the present application when the optical lens 10 is in a short focus state

[0349]

[0350]

[0351] Table 3.4 Aspherical surface coefficients of each surface of the optical lens 10 in the ninth embodiment of the present application when the optical lens 10 is in a long focus state

[0352]

[0353]

[0354] Table 3.5 Basic parameters of the optical path when the optical lens 10 in the ninth embodiment of the present application is in a short focus state

[0355] mm mm F1 F / # f L011 ]]> f L012 ]]> f L1 ]]> f L121 ]]> f L122 ]]> f L13 ]]> f L21 ]]> f L22 ]]> mm 5.120 19.661 2.17 27.338 -159.450 29.999 -17.424 38.032 13.110 -32.994 -19.599 mm mm mm mm mm mm Parameter ImgH Value Unit mm mm

[0356] Table 3.6 Basic parameters of the optical path when the optical lens 10 in the ninth embodiment of the present application is in a long focus state

[0357] mm mm F2 F / # f L021 ]]> f L022 ]]> f L11 ]]> f L121 ]]> f L122 ]]> f L13 ]]> f L21 ]]> f L22 ]]> mm 2.567 30.720 3.76 35.103 -241.286 29.999 -17.424 38.032 13.110 -32.994 -19.599 mm mm mm mm mm mm Fig. 17c Fig. 17d Fig. 17e Fig. 17f ​ ​

[0358] Table 3.7. Related parameters and ξ values of the optical lens 10 in the ninth embodiment of the present application; wherein the object distance is INIFINITY (infinity)

[0359]

[0360] In Tables 3.5-3.7, F1 is the first effective focal length of the optical lens 10; F2 is the second effective focal length of the optical lens 10; f L011 is the focal length of the positive lens L011; f L012 is the focal length of the negative lens L012; f L021 is the focal length of the positive lens L021; f L022 is the focal length of the negative lens L022; f L11 is the focal length of the first lens L11, f L12 is the focal length of the second lens L12, f L13 is the focal length of the third lens L13, f L21 is the focal length of the fourth lens L21, f L221 is the focal length of the positive lens L221, f L222 is the focal length of the negative lens L222, f g01 is the effective focal length of the first front lens group G01, f g02 is the effective focal length of the second front lens group G02, f g1 is the effective focal length of the first rear lens group G1, f g2 is the effective focal length of the second rear lens group G2, f g011 is the combined focal length of the first front lens group G01 and the first rear lens group G1, f g021 is the combined focal length of the second front lens group G02 and the first rear lens group G1, β1 is the first focal length distribution ratio, β1 = f g011 / f g01 , β2 is the second focal length distribution ratio, β2 = f g021 / f g02 , α1 is the third focal length distribution ratio, α1 = F1 / f g011 ; α2 is the fourth focal length distribution ratio, α2 = F2 / f g021 ; ξ1 is the stroke compression ratio coefficient of the first rear lens group G1 when the optical lens 10 is in the short-focus state, ξ2 is the stroke compression ratio coefficient of the first rear lens group G1 when the optical lens 10 is in the long-focus state; L is the moving stroke of the first folding element 1 between the first position and the second position; the coefficient k = [(β1 - 1) 2 / β1] - [(β2 - 1) 2 / β2].

[0361] ​ ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​This is the axial spherical aberration curve of the optical lens 10 in the ninth embodiment of this application when it is in a short focal length state. ​ The field curvature curve and distortion curve of the optical lens 10 in the ninth embodiment of this application when it is in a short focal length state; ​ This is the axial spherical aberration curve of the optical lens 10 in the ninth embodiment of this application when it is in telephoto mode. ​ The field curvature curve and distortion curve of the optical lens 10 in the ninth embodiment of this application when it is in telephoto mode. Fig. 17c - Fig. 17f The diagram shows axial spherical aberration curves, field curvature curves, and distortion curves corresponding to different wavelengths of the system (illustrated as 650nm, 610nm, 555nm, 510nm, 470nm, and 435nm).

[0362] The axial spherical aberration curve in the figure is used to illustrate the deviation of light of the corresponding wavelength emitted in a 0-degree field of view from the ideal image point after passing through the optical system; its horizontal axis is the deviation value along the optical axis, and its vertical axis is the normalized coordinate at the pupil. Fig. 17c and Fig. 17e The deviation values ​​are all small, indicating that the axial spherical aberration of the optical lens is well corrected.

[0363] The field curvature curves in the figure illustrate the deviation of the convergence point of the narrow beam from the ideal imaging plane in different fields of view. x represents the beam in the sagittal direction, and y represents the beam in the meridional direction. The horizontal axis represents the deviation value along the optical axis, and the vertical axis represents the corresponding field of view. When the value of a certain field of view is too large, the image quality of that field of view is poor or there are advanced aberrations. Fig. 17d and Fig. 17f The field curvatures in both directions are small, indicating that the system has good depth of focus.

[0364] The distortion curve in the figure is used to illustrate the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. Fig. 17d and Fig. 17f The deviation shown is small, which ensures that there is no obvious distortion in the image.

[0365] Therefore, the optical lens 10 in the ninth embodiment of this application achieves low light aberration control and obtains clear image quality through reasonable surface shape and gap design.

[0366] Fig. 18a This is a schematic diagram of the optical lens 10 in the tenth embodiment of this application when it is in a short focal length state. Fig. 18b This is a schematic diagram of the optical lens 10 in the tenth embodiment of this application when it is in telephoto mode. Fig. 18a and Fig. 18b The optical paths of the first transition element 1 and the second transition element 3 are both unfolded and replaced by parallel plates. Fig. 18a , Fig. 18b The optical lens 10 shown isFig. 15a 、 Fig. 15b The main difference between the optical lens 10 shown in FIGS. 1A and 1B is that the specific parameters of the optical lens 10 are different.

[0367] The optical lens 10 shown in FIGS. 1A and 1B will be specifically described below in combination with the specific parameters and simulation results. Fig. 18a and Fig. 18b The optical lens 10 shown in FIGS. 1A and 1B will be specifically described below in combination with the specific parameters and simulation results.

[0368] Table 4.1 Main parameters of the optical lens 10 in the tenth embodiment of the present application in a short-focus state

[0369]

[0370] The unit of the parameter values of the radius of curvature, the thickness, and the clear aperture radius in the table is mm. The radius of curvature INF represents that the surface corresponding to the parameter is a plane, and the radius of curvature is infinite.

[0371] S1 represents the object side surface of the positive lens L011, S2 represents the image side surface of the positive lens L011, S3 represents the object side surface of the negative lens L012, S4 represents the image side surface of the negative lens L012, PRISM1 represents the first turning element 1, which is a prism and has a light ray folding function; S5 represents the first light entrance face 11 of the first turning element 1, S6 represents the first light exit face 12 of the first turning element 1; S7 represents the object side surface of the first lens L11, S8 represents the image side surface of the first lens L11. S9 represents the object side surface of the positive lens L121, S10 represents the image side surface of the positive lens L121. S11 represents the object side surface of the negative lens L122, S12 represents the image side surface of the negative lens L122. S13 represents the object side surface of the third lens L13, S14 represents the image side surface of the third lens L13, S15 represents the object side surface of the fourth lens L21, S16 represents the image side surface of the fourth lens L21, S17 represents the object side surface of the fifth lens L22, S18 represents the image side surface of the fifth lens L22. PRISM2 represents the second turning element 3, which is a prism and has a light ray folding function; S19 represents the prism entrance face 31 of the second turning element 3; S20 represents the prism exit face 32 of the second turning element 3; IRCF represents a filter, which is an infrared filter, S21 is the object side surface of the filter, and S22 is the image side surface of the filter; IMA represents an image plane IMAGE, which can be a light receiving surface of a light receiving element.

[0372] Table 4.2 Main parameters of the optical lens 10 in the tenth embodiment of the present application in a long-focus state

[0373]

[0374]

[0375] The units of the parameters of the radius of curvature, the thickness, and the clear aperture in the table are mm. The radius of curvature of INF represents that the surface corresponding to the parameter is a plane, and the radius of curvature is infinite.

[0376] S1 represents the object side surface of the positive lens L021, S2 represents the image side surface of the positive lens L021, S3 represents the object side surface of the negative lens L022, S4 represents the image side surface of the negative lens L022, PRISM1 represents the first turning element 1, which is a prism and has a light turning function; S5 represents the first light entrance surface 11 of the first turning element 1, S6 represents the first light exit surface 12 of the first turning element 1; S7 represents the object side surface of the first lens L11, S8 represents the image side surface of the first lens L11. S9 represents the object side surface of the positive lens L121, S10 represents the image side surface of the positive lens L121. S11 represents the object side surface of the negative lens L122, S12 represents the image side surface of the negative lens L122. S13 represents the object side surface of the third lens L13, S14 represents the image side surface of the third lens L13, S15 represents the object side surface of the fourth lens L21, S16 represents the image side surface of the fourth lens L21, S17 represents the object side surface of the fifth lens L22, S18 represents the image side surface of the fifth lens L22. PRISM2 represents the second turning element 3, which is a prism and has a light turning function; S19 represents the prism entrance surface 31 of the second turning element 3; S20 represents the prism exit surface 32 of the second turning element 3; IRCF represents the filter, which is an infrared filter, S21 is the object side surface of the filter, and S22 is the image side surface of the filter; IMA represents the image plane IMAGE, which can be a photosensitive surface of a photosensitive element.

[0377] Table 4.3 Aspherical surface coefficients of each surface of the optical element when the optical lens 10 in the tenth embodiment of the present application is in a short focus state

[0378]

[0379]

[0380] Table 4.4 Aspherical surface coefficients of each surface of the optical element when the optical lens 10 in the tenth embodiment of the present application is in a long focus state

[0381]

[0382]

[0383] As shown in Table 4.5, Table 4.6 and Table 4.7, Table 4.5 shows the basic parameters of the optical lens 10 in the short-focus state in the tenth embodiment of the present application, Table 4.6 shows the basic parameters of the optical lens 10 in the long-focus state in the tenth embodiment of the present application, and Table 4.7 shows the related parameters of the optical lens 10 in the tenth embodiment of the present application and the value of ξ;

[0384] Table 4.5 Basic parameters of the optical lens 10 in the short-focus state in the tenth embodiment of the present application

[0385] Parameter ImgH F1 F / # f L011 ]]> f L012 ]]> f L11 ]]> f L121 ]]> f L122 ]]> f L3 ]]> f L21 ]]> f L22 ]]> Value 8.166 31.361 2.17 43.608 -254.310 47.854 -27.790 60.659 20.910 -52.622 -31.260 Unit mm mm mm mm mm mm mm mm mm mm mm

[0386] Table 4.6 Basic parameters of the optical lens 10 in the long-focus state in the tenth embodiment of the present application

[0387] Parameter ImgH F2 F / # f L021 ]]> f L022 ]]> f L11 ]]> f L121 ]]> f L122 ]]> f L13 ]]> f L21 ]]> f L22 ]]> Value 4.094 49.002 3.76 55.995 -384.832 47.854 -27.790 60.659 20.910 -52.622 -31.260 Unit mm mm mm mm mm mm mm mm mm mm mm

[0388] Table 4.7 Related parameters of the optical lens 10 in the tenth embodiment of the present application and the value of ξ; wherein the object distance is INIFINITY (infinity)

[0389]

[0390] In Table 4.5 to Table 4.7, F1 is the first effective focal length of the optical lens 10; F2 is the second effective focal length of the optical lens 10; f L011 is the focal length of the positive lens L011; f L012 is the focal length of the negative lens L012; f L021 is the focal length of the positive lens L021; f L022 is the focal length of the negative lens L022; f L11 is the focal length of the first lens L11, f L12 is the focal length of the second lens L12, f L13 is the focal length of the third lens L13, f L21 is the focal length of the fourth lens L21, f L221 is the focal length of the positive lens L221, f L222 is the focal length of the negative lens L222, f g01 is the effective focal length of the first front lens group G01, f g02 is the effective focal length of the second front lens group G02, f g1 is the effective focal length of the first rear lens group G1, f g2 is the effective focal length of the second rear lens group G2, f g011 is the combined focal length of the first front lens group G01 and the first rear lens group G1, f g021 is the combined focal length of the second front lens group G02 and the first rear lens group G1, β1 is the first focal length distribution ratio, β1 = f g011 / fg01 , β2 is a second focal length distribution ratio, β2 = f g021 / f g02 , α1 is a third focal length distribution ratio, α1 = F1 / f g011 ; α2 is a fourth focal length distribution ratio, α2 = F2 / f g021 ; ξ1 is a stroke compression ratio coefficient of the first rear lens group G1 when the optical lens 10 is in the short-focus state, and ξ2 is a stroke compression ratio coefficient of the first rear lens group G1 when the optical lens 10 is in the long-focus state; L is the moving stroke of the first folding element 1 between the first position and the second position; the coefficient k = [(β1-1) 2 / β1]-[(β2-1) 2 / β2].

[0391] Fig. 18c is the axial spherical aberration curve, the field curvature curve and the distortion curve of the optical lens 10 in the short-focus state in the tenth embodiment of the present application, Fig. 18d is the axial spherical aberration curve, the field curvature curve and the distortion curve of the optical lens 10 in the long-focus state in the tenth embodiment of the present application; Fig. 18c and Fig. 18d show the axial spherical aberration curve, the field curvature curve and the distortion curve corresponding to different wave bands (the figure shows 650nm, 610nm, 555nm, 510nm, 470nm, 435nm) of the system.

[0392] The axial spherical aberration curve in the figure is used to show the deviation of light of a corresponding wavelength emitted at 0 degree field of view relative to an ideal image point after passing through the optical system; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the normalized coordinate at the pupil. Fig. 18c and Fig. 18d The deviation values in and are small, and the correction of the axial spherical aberration of the optical lens is good.

[0393] The field curvature curve in the figure is used to show the deviation of the converging points of fine beams of different fields of view from the ideal imaging surface, x is the sagittal direction beam, and y is the meridional direction beam; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the corresponding field of view. When a certain field of view value is too large, the image quality of the field of view is poor or there is high-order aberration. Fig. 18c and Fig. 18d The field curvatures in and are small, and the system has good focal depth.

[0394] The distortion curve in the figure is used to show the relative deviation amount of the converging points (actual image height) of beams of different fields of view from the ideal image height. Fig. 18c and Fig. 18d The deviation amounts shown in and are small, which can ensure that the picture does not have obvious deformation.

[0395] Therefore, the optical lens 10 in the tenth embodiment of this application achieves low light aberration control and obtains clear image quality through reasonable surface shape and gap design.

[0396] Fig. 19a This is a schematic diagram of the optical lens 10 in the eleventh embodiment of this application when it is in a short focal length state. Fig. 19b This is a schematic diagram of the optical lens 10 in the eleventh embodiment of this application when it is in telephoto mode. Fig. 19a and Fig. 19b The optical paths of the first transition element 1 and the second transition element 3 are both unfolded and replaced by parallel plates. Fig. 19a , Fig. 19b The optical lens 10 shown is Fig. 15a , Fig. 15b The main difference between the optical lens 10 shown is that the optical power configuration of each lens in the second rear lens group G2 is different, as described below:

[0397] like Fig. 19a and Fig. 19b As shown, the fifth lens L22 includes two negative lenses spaced apart, namely negative lens L221 and negative lens L222. This arrangement is equivalent to splitting the fifth lens L22 into negative lens L221 and negative lens L222, which helps to increase the number of lens surfaces in the second rear lens group G2, increases the degree of freedom in the design of the second rear lens group G2, and thus helps to correct the aberrations of the optical lens.

[0398] The following section will analyze the specific parameters and simulation results. Fig. 19a and Fig. 19b The optical lens 10 shown will be described in detail.

[0399] As shown in Tables 5.1 to 5.4, Table 5.1 shows the main parameters of the optical lens 10 in the eleventh embodiment of this application when it is in the short focal length state; Table 5.2 shows the main parameters of the optical lens 10 in the eleventh embodiment of this application when it is in the long focal length state; Table 5.3 shows the aspherical coefficients of each surface of the optical element when the optical lens 10 in the eleventh embodiment of this application is in the short focal length state; and Table 5.4 shows the aspherical coefficients of each surface of the optical element when the optical lens 10 in the eleventh embodiment of this application is in the long focal length state.

[0400] Table 5.1 Main parameters of the optical lens 10 in the eleventh embodiment of this application when it is in short focal length mode

[0401]

[0402] The units for the parameters of radius of curvature, thickness, and light transmission radius in the table are all in mm.

[0403] STO represents a stop (STOP) that limits the size of the light entrance aperture of the light beam, and affects the amount of light entering the optical system. The STO is located in the object side direction of the positive lens L01. S2 represents the object side surface of the positive lens L011, and S3 represents the image side surface of the positive lens L011. PRISM1 represents the first turning element 1, which is a prism and has a light ray turning function. S4 represents the first light entrance surface 11 of the first turning element 1, and S6 represents the first light exit surface 12 of the first turning element 1. S7 represents the object side surface of the first lens L11, and S8 represents the image side surface of the first lens L11. S9 represents the object side surface of the second lens L12, and S10 represents the image side surface of the second lens L12. S11 represents the object side surface of the third lens L13, and S12 represents the image side surface of the third lens L13. S13 represents the object side surface of the fourth lens L21, and S14 represents the image side surface of the fourth lens L21. S15 represents the object side surface of the negative lens L221, and S16 represents the image side surface of the negative lens L221. S17 represents the object side surface of the negative lens L222, and S18 represents the image side surface of the negative lens L222. PRISM2 represents the second turning element 3, which is a prism and has a light ray turning function. S19 represents the prism entrance surface 31 of the second turning element 3, and S20 represents the prism exit surface 32 of the second turning element 3. IRCF represents a filter, which is an infrared filter. S21 represents the object side surface of the filter, and S22 represents the image side surface of the filter. IMA represents an image plane IMAGE, which can be a light receiving surface of a light receiving element.

[0404] Table 5.2 Main parameters of the optical lens 10 in the eleventh embodiment of the present application in the long-focus state

[0405]

[0406]

[0407] The units of the parameter values of the radius of curvature, the thickness, and the clear aperture radius in the table are mm.

[0408] STO represents a stop (STOP) that limits the size of the light entrance aperture of the light beam, and affects the amount of light entering the optical system, and the STO is located in the object side direction of the positive lens L01; S2 represents the object side surface of the positive lens L021, and S3 represents the image side surface of the positive lens L021; S4 represents the object side surface of the negative lens L022, and S5 represents the image side surface of the negative lens L022; PRISM1 represents a first turning element 1, which is a prism and has a light ray turning function; S6 represents a first light entrance surface 11 of the first turning element 1, and S7 represents a first light exit surface 12 of the first turning element 1; S8 represents the object side surface of the first lens L11, and S9 represents the image side surface of the first lens L11. S10 represents the object side surface of the second lens L12, and S11 represents the image side surface of the second lens L12. S12 represents the object side surface of the third lens L13, and S13 represents the image side surface of the third lens L13. S14 represents the object side surface of the fourth lens L21, and S15 represents the image side surface of the fourth lens L21. S16 represents the object side surface of the negative lens L221, and S17 represents the image side surface of the negative lens L221. S18 represents the object side surface of the negative lens L222, and S19 represents the image side surface of the negative lens L222. PRISM2 represents a second turning element 3, which is a prism and has a light ray turning function; S20 represents a prism entrance surface 31 of the second turning element 3; S21 represents a prism exit surface 32 of the second turning element 3; IRCF represents a filter, which is an infrared filter, S22 is the object side surface of the filter, and S23 is the image side surface of the filter; IMA represents an image plane IMAGE, which can be a light receiving surface of a light receiving element.

[0409] Table 5.3 Aspherical surface coefficients of each surface of the optical lens 10 in the eleventh embodiment of the present application when the optical lens 10 is in a short focus state

[0410]

[0411]

[0412]

[0413] Table 5.4 Aspherical surface coefficients of each surface of the optical lens 10 in the eleventh embodiment of the present application when the optical lens 10 is in a long focus state

[0414]

[0415]

[0416] As shown in Table 5.5, Table 5.6 and Table 5.7, Table 5.5 shows the basic parameters of the optical lens 10 in the short-focus state in the eleventh embodiment of the present application, Table 5.6 shows the basic parameters of the optical lens 10 in the long-focus state in the eleventh embodiment of the present application, and Table 5.7 shows the related parameters of the optical lens 10 in the eleventh embodiment of the present application and the value of ξ.

[0417] Table 5.5 Basic parameters of the optical lens 10 in the short-focus state in the eleventh embodiment of the present application

[0418] Parameter ImgH [F1] F / # f L01 ]]> f L11 ]]> f L12 ]]> f L13 ]]> f L21 ]]> f L221 ]]> f L222 ]]> Value 5.80 22.859 1.92 30.793 33.088 -20.714 11.788 -27.630 -178.074 -38.736 Unit mm mm mm mm mm mm mm mm mm mm

[0419] Table 5.6 Basic parameters of the optical lens 10 in the long-focus state in the eleventh embodiment of the present application

[0420]

[0421] Table 5.7 Related parameters of the optical lens 10 in the eleventh embodiment of the present application and the value of ξ; wherein the object distance is INIFINITY (infinity)

[0422]

[0423] In Table 5.5-Table 5.7, F1 is the first effective focal length of the optical lens 10; F2 is the second effective focal length of the optical lens 10; f L011 is the focal length of the positive lens L011; f L021 is the focal length of the positive lens L021; f L022 is the focal length of the negative lens L022; f L11 is the focal length of the first lens L11, f L12 is the focal length of the second lens L12, f L13 is the focal length of the third lens L13, f L21 is the focal length of the fourth lens L21, f L221 is the focal length of the negative lens L221, f L222 is the focal length of the negative lens L222, f g01 is the effective focal length of the first front lens group G01, f g02 is the effective focal length of the second front lens group G02, f g1 is the effective focal length of the first rear lens group G1, f g2 is the effective focal length of the second rear lens group G2, f g011 is the combined focal length of the first front lens group G01 and the first rear lens group G1, f g021 is the combined focal length of the second front lens group G02 and the first rear lens group G1; β1 is the first focal length distribution ratio, β2 is the second focal length distribution ratio, and α1 is the third focal length distribution ratio, α1=F1 / f g011; a2 is a fourth focal length distribution ratio, a2 = F2 / f g021 ; xi is a stroke compression ratio coefficient of the first rear lens group G1 when the optical lens 10 is in the short-focus state, and x2 is a stroke compression ratio coefficient of the first rear lens group G1 when the optical lens 10 is in the long-focus state; L is the moving stroke of the first turning element 1 between the first position and the second position; the coefficient k = [(b1-1) 2 / b1] - [(b2-1) 2 / b2].

[0424] Fig. 19c is the axial spherical aberration curve, the field curvature curve and the distortion curve of the optical lens 10 in the short-focus state in the eleventh embodiment of the present application, Fig. 19d is the axial spherical aberration curve, the field curvature curve and the distortion curve of the optical lens 10 in the long-focus state in the eleventh embodiment of the present application; Fig. 19c and Fig. 19d show the axial spherical aberration curve, the field curvature curve and the distortion curve corresponding to different wave bands (the figure shows 650nm, 610nm, 555nm, 510nm, 470nm, 435nm) of the system.

[0425] The axial spherical aberration curve in the figure is used to show the deviation of light of a corresponding wavelength emitted at 0 degree field of view relative to an ideal image point after passing through the optical system; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the normalized coordinate at the pupil. Fig. 19c and Fig. 19d The deviation values in the two directions are small, and the correction of the axial spherical aberration of the optical lens is good.

[0426] The field curvature curve in the figure is used to show the deviation of the converging points of light beams of different fields of view from the ideal imaging surface, x is the sagittal direction light beam, and y is the meridional direction light beam; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the corresponding field of view. When a field of view value is too large, the image quality of the field of view is poor or there is high-order aberration. Fig. 19c and Fig. 19d The field curvatures in the two directions shown in the figure are small, and the system has good depth of focus.

[0427] The distortion curve in the figure is used to show the relative deviation amount of the converging points (actual image height) of light beams of different fields of view from the ideal image height. Fig. 19c and Fig. 19d The deviation amount shown in the figure is small, which can ensure that the picture does not have obvious deformation.

[0428] Therefore, the optical lens 10 in the eleventh embodiment of the present application realizes low light aberration control and obtains clear image quality through reasonable surface type and gap design.

[0429] The type of section line in the drawings of the present application is to distinguish different components and should not be understood as a limitation on the material of the components. The drawings of the present application are to show the structural composition and are not shown in the proportion of the actual product.

[0430] Although the description of the present application will be introduced in combination with some embodiments, it does not mean that the features of the present application are limited to the embodiments. On the contrary, the embodiments introduced in the present application are to cover other options or modifications that can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict.

[0431] In the embodiments of the present application, the terms "first", "second", "third", "fourth", "fifth" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third", "fourth", "fifth" can explicitly or implicitly include one or more of the features.

[0432] In the embodiments of the present application, "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0433] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood in a broad sense, for example, "connecting" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium. The orientation language mentioned in the embodiments of the present application, such as "upper", "lower", "left", "right", "inner", "outer" and the like, is only the direction of the drawing, therefore, the orientation language used is to better and more clearly illustrate and understand the embodiments of the present application, and is not to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application. "Multiple" means at least two.

[0434] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0435] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An optical lens characterized in that, It includes a front lens group (G0), a first transition element (1), a first rear lens group (G1), and a second rear lens group (G2) arranged along the object-to-image direction. The front lens group (G0) includes a first front lens group (G01) and a second front lens group (G02) arranged along a first direction (X), the first direction (X) being parallel to the optical axis of the first rear lens group (G1); the first turning element (1) is movable along the first direction (X) between a first position and a second position. When the first turning element (1) is located in the first position, the first turning element (1) is located on the image side of the first front lens group (G01), and the first turning element (1) is used to reflect the outgoing light beam of the first front lens group (G01) to the first rear lens group (G1), and the optical lens has a first effective focal length F1. When the first turning element (1) is located in the second position, the first turning element (1) is located on the image side of the second front lens group (G02), and the first turning element (1) is used to reflect the outgoing light beam of the second front lens group (G02) to the first rear lens group (G1). The optical lens has a second effective focal length F2, which is greater than the first effective focal length F1. When the first turning element (1) is located in the first position, the optical system of the optical lens includes the first front lens group (G01), the first turning element (1), the first rear lens group (G1) and the second rear lens group (G2), and the total length of the optical system is TTL1; When the first turning element (1) is located in the second position, the optical system of the optical lens includes the second front lens group (G02), the first turning element (1), the first rear lens group (G1) and the second rear lens group (G2), and the total length of the optical system is TTL2; When the first turning element (1) moves between the first position and the second position, the image plane position of the optical lens remains unchanged; The travel distance L of TTL1, TTL2, and the first turning element (1) between the first position and the second position satisfies: 8.1mm≤L=TTL2-TTL1≤23mm.

2. The optical lens according to claim 1, characterized in that, an effective focal length f of the first front lens group (G01) g01 an effective focal length f of the second front lens group (G02) g02 an effective focal length f of the first back lens group (G1) g1 f1 / f2 < 0.5 TTL2-TTL1=|f g02 -f g01 +k·f g1 |; wherein k satisfies: 0≤|k|<1.

3. The optical lens according to claim 2, characterized in that, an effective focal length f of the first front lens group (G01) g01 an effective focal length f of the second front lens group (G02) g02 a combined focal length f of the first front lens group (G01) and the first rear lens group (G1) g011 a combined focal length f of the second front lens group (G02) and the first rear lens group (G1) g021 fulfilling: k=[(β1-1) 2 / β1]-[(β2-1) 2 / β2]; β1=f g011 / f g01 ; β2=f g021 / f g02 .

4. The optical lens according to claim 2, characterized in that, k satisfies: 0.28≤k≤0.46; or 0≤k≤0.

005.

5. The optical lens according to any one of claims 1 to 4, characterized in that, An effective focal length f of the first front lens group (G01) g01 An effective focal length f of the second front lens group (G02) g02 satisfies: 4.5mm ≤ |f g02 -f g01 ≤ 12.9mm.

6. The optical lens according to any one of claims 1 to 4, characterized in that, An effective focal length f of the second front lens group (G02) g02 An effective focal length f of the first front lens group (G01) g01 .

7. The optical lens according to any one of claims 1 to 4, characterized in that, The object side of the first turning element (1) is provided with a light shielding device (2), when the first turning element (1) is located at the first position, the light shielding device (2) is used for shielding the light beam shot to the image side of the second front lens group (G02); when the first turning element (1) is located at the second position, the light shielding device (2) is used for shielding the light beam shot to the image side of the first front lens group (G01).

8. The optical lens according to claim 7, wherein, The light shielding device (2) comprises a first variable aperture stop (21) and a second variable aperture stop (22); The first variable aperture stop (21) is arranged on the object side or the image side of the first front lens group (G01), or between the lenses of the first front lens group (G01); The second variable aperture stop (22) is arranged on the object side or the image side of the second front lens group (G02), or between the lenses of the second front lens group (G02).

9. The optical lens according to claim 7, wherein, The light shielding device (2) comprises a shielding plate (23); The shielding plate (23) is arranged on the image side of the front lens group (G0) and is movable relative to the front lens group (G0), when the first turning element (1) is located at the first position, the shielding plate (23) is moved to the image side of the second front lens group (G02); when the first turning element (1) is located at the second position, the shielding plate (23) is moved to the image side of the first front lens group (G01); Alternatively, the shielding plate (23) is arranged on the object side of the front lens group (G0) and is movable relative to the front lens group (G0), when the first turning element (1) is located at the first position, the shielding plate (23) is moved to the object side of the second front lens group (G02); when the first turning element (1) is located at the second position, the shielding plate (23) is moved to the object side of the first front lens group (G01).

10. The optical lens according to any one of claims 1-4, wherein, The first rear lens group (G1) is a movable lens group and is movable relative to the front lens group (G0) along the first direction (X), and the second rear lens group (G2) is a fixed lens group and is fixed relative to the front lens group (G0) along the first direction (X).

11. The optical lens according to claim 10, wherein, an effective focal length f of the first front lens group (G01) when the first turning element (1) is located at the first position g01 a combined focal length f of the first front lens group (G01) and the first rear lens group (G1) g011 the first effective focal length F1 satisfies: ξ1= [1-β1 2 ]α1 2 , β1=f g011 / f g01 , α1=F1 / f g011 , and 0 < ξ1≤ 3; When the first turning element (1) is in the second position, the effective focal length f of the second front lens group (G02) is... g02 The combined focal length f of the second front lens group (G02) and the first rear lens group (G1) g021 The second effective focal length F2 satisfies: ξ2 = [1-β2] 2 ]α2 2 β2=f g021 / f g02 α2=F2 / f g021 And 0 < ξ2 ≤ 3.

12. The optical lens according to claim 10, wherein, An effective focal length f of the first front lens group (G01) g01 A combined focal length f of the first front lens group (G01) and the first rear lens group (G1) g011 Satisfies: 0 < β1≤ 0.5; wherein β1=f g011 / f g01 ; An effective focal length f of the second front lens group (G02) g02 A combined focal length f of the second front lens group (G02) and the first rear lens group (G1) g021 Satisfies: 0 < β2≤ 0.5; wherein β2=f g021 / f g02 .

13. The optical lens according to claim 10, wherein, An effective focal length f of the first front lens group (G01) g01 A combined focal length f of the first front lens group (G01) and the first rear lens group (G1) g011 0.75 ≤ 1 - β1 2 < 1; wherein β1 = f g011 / f g01 ; An effective focal length f of the second front lens group (G02) g02 A combined focal length f of the second front lens group (G02) and the first rear lens group (G1) g021 0.75 ≤ 1 - β2 2 < 1; where β2 = f g021 / f g02 .

14. The optical lens according to claim 10, wherein, A combined focal length f of the first front lens group (G01) and the first rear lens group (G1) g011 , the first effective focal length F1 satisfies: 0 < α1≤ 2; wherein, α1=F1 / f g011 ; A combined focal length f of the second front lens group (G02) and the first rear lens group (G1) g021 The second effective focal length F2 satisfies: 0 < a2≤ 2; wherein a2=F2 / f g021 .

15. The optical lens according to any one of claims 1-4, wherein, The focal power of the first front lens group (G01), the second front lens group (G02) and the first rear lens group (G1) are all positive, and the focal power of the second rear lens group (G2) is negative.

16. The optical lens according to claim 15, wherein, The first front lens group (G01) and the second front lens group (G02) each comprise at least one positive lens; The first rear lens group (G1) comprises, in an object side to image side direction, a first lens (L11), a second lens (L12) and a third lens (L13), the first lens (L11) and the third lens (L13) each have positive refractive power, the second lens (L12) has negative refractive power, and there is a gap between any two adjacent lenses among the first lens (L11), the second lens (L12) and the third lens (L13); The second rear lens group (G2) comprises, in an object side to image side direction, a fourth lens (L21) and a fifth lens (L22), the fourth lens (L21) has negative refractive power or positive refractive power, the fifth lens (L22) has negative refractive power, and there is a gap between the fourth lens (L21) and the fifth lens (L22).

17. The optical lens according to claim 16, wherein The second lens (L12) comprises a positive lens and a negative lens arranged in sequence.

18. The optical lens according to claim 16, wherein The fifth lens (L22) comprises a positive lens and a negative lens arranged in sequence, or the fifth lens (L22) comprises two negative lenses arranged in sequence.

19. The optical lens according to any one of claims 1 to 4, wherein The optical lens further comprises a second folding element (3) disposed on an image side of the second rear lens group (G2), the second folding element (3) is a prism, and has a prism entrance surface (31) and a prism exit surface (32), the prism entrance surface (31) is disposed towards a side on which the second rear lens group (G2) is located, the prism exit surface (32) is disposed towards a side of an image plane of the optical lens, and the prism exit surface (32) is disposed obliquely relative to an optical axis of the second rear lens group (G2).

20. A camera module, comprising: An optical lens (10) according to any one of claims 1 to 19, and a photosensitive element (20) disposed on an image side of the optical lens (10).

21. An electronic device, comprising: A camera module (100) according to claim 20, and a housing (200) on which the camera module (100) is mounted.

Images