Camera lens system, image capturing device and electronic device

Abstract

The invention provides a camera lens system which comprises two lens groups, namely a first lens group and a second lens group along an optical path from an object side to an image side in sequence. The camera lens system has a first state corresponding to an infinite object distance. The camera lens system in the first state has a long focal length end first state corresponding to the long focal length end and a short focal length end first state corresponding to the short focal length end in the zooming process. At least one lens group of the two lens groups moves in the optical axis direction in the zooming process. At least one of the object-side surface and the image-side surface of at least one lens in the two lens groups has at least one inflection point at an off-axis position. The lens having the largest thickness on the optical axis in the imaging lens system is the third lens or the fourth lens. When specific conditions are met, the camera lens system can meet the requirements of zooming function, miniaturization and high imaging quality at the same time. The invention further discloses an image capturing device with the camera lens system and an electronic device with the image capturing device.

Description

Technical Field

[0001] This disclosure relates to a camera lens system, an image acquisition device, and an electronic device, particularly a camera lens system and an image acquisition device suitable for electronic devices. Background Technology

[0002] With advancements in semiconductor technology, the performance of electronic image sensors has improved, and pixels can be made smaller. As a result, optical lenses with high image quality have become an indispensable component.

[0003] With the rapid advancement of technology, electronic devices equipped with optical lenses are finding increasingly wider applications, leading to more diverse requirements for these lenses. Since existing optical lenses often struggle to achieve a balance between image quality, sensitivity, aperture size, size, and viewing angle, this invention provides an optical lens with high image quality to meet these demands.

[0004] Specifically, in recent years, electronic products and devices have demanded thinner and lighter designs, making it difficult for traditional optical lenses to simultaneously meet the requirements of high specifications and miniaturization, especially for miniature lenses with large apertures or telephoto features. Existing telephoto lens technologies are gradually becoming inadequate, exhibiting problems such as excessive length, small aperture, insufficient image quality, or inability to be miniaturized. Therefore, different optical features are needed to address these issues and meet these requirements.

[0005] Furthermore, to enhance the shooting experience in the mid-to-long focal length range, some current mobile phones use fixed-focus telephoto lenses combined with digital zoom processing technology. The resulting visual effect is not derived from true optical zoom, leading to a decrease in image quality. Alternatively, other mobile phones achieve zoom effects from near to far by using multiple lenses with different focal lengths working together. However, this approach suffers from drawbacks such as stuttering when switching between lenses and discrepancies in light intake and color saturation, resulting in a poor shooting experience. Multiple lenses also significantly increase the space occupied by the image sensor in electronic products. Summary of the Invention

[0006] This disclosure provides a camera lens system, an image capturing device, and an electronic device. The camera lens system includes two groups of lenses arranged sequentially from the object side to the image side along the optical path. Under certain conditions, the camera lens system provided by this disclosure can simultaneously meet the requirements of zoom function, miniaturization, and high image quality.

[0007] The present disclosure provides a camera lens system including two lens groups. The two lens groups are, in order from an object side to an image side along an optical path, a first lens group and a second lens group, and all lenses of the two lens groups respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction. The total number of lens groups of the camera lens system is two. Preferably, the camera lens system has a first state corresponding to an infinite object distance. Preferably, the camera lens system in the first state has a first long focal length state corresponding to a long focal length end and a first short focal length state corresponding to a short focal length end during a zooming process. Preferably, at least one of the two lens groups moves along an optical axis direction during the zooming process. Preferably, at least one of the object-side surface and the image-side surface of at least one lens of the two lens groups has at least one inflection point at an off-axis position. Preferably, the camera lens system includes, in order from the object side to the image side along the optical path, a first lens, a second lens, a third lens, and a fourth lens, and the lens having the maximum thickness on the optical axis in the camera lens system is the third lens or the fourth lens. The total focal length of the camera lens system in the first long focal length state is fLf, the total focal length of the camera lens system in the first short focal length state is fSf, the focal length of the first lens group is fG1, the focal length of the second lens group is fG2, the radius of curvature of the image-side surface of the third lens is R6, and the radius of curvature of the object-side surface of the fourth lens is R7, and preferably satisfies the following conditions:

[0008] 1.20 < fLf / fSf < 2.00;

[0009] -0.80 < fG1 / fG2 < -0.20; and

[0010] -2.00 < R6 / R7 < -0.65.

[0011] The present disclosure further provides a camera lens system, including two lens groups. The two lens groups are, in order from an object side to an image side along the optical path, a first lens group and a second lens group, and all lenses of the two lens groups respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction. The total number of lens groups of the camera lens system is two. Preferably, the camera lens system has a first state corresponding to an infinite object distance. Preferably, the camera lens system in the first state has a first long-focal-length state corresponding to the long-focal-length end and a first short-focal-length state corresponding to the short-focal-length end during a zooming process. Preferably, at least one of the two lens groups moves along the optical axis direction during the zooming process. Preferably, at least one of the object-side surface and the image-side surface of at least one lens in the two lens groups has at least one inflection point at an off-axis position. Preferably, the lens with the maximum thickness on the optical axis in the camera lens system is the lens closest to the image side among the first lens group or the lens closest to the object side among the second lens group. The total focal length of the camera lens system in the first long-focal-length state is fLf, the total focal length of the camera lens system in the first short-focal-length state is fSf, the focal length of the first lens group is fG1, the focal length of the second lens group is fG2, half of the maximum viewing angle of the camera lens system in the first short-focal-length state is HFOVSf, the radius of curvature of the image-side surface of the lens closest to the image side in the first lens group of the camera lens system is RG1i, and the radius of curvature of the object-side surface of the lens closest to the object side in the second lens group of the camera lens system is RG2o, which preferably satisfies the following conditions:

[0012] 1.20 < fLf / fSf < 2.00;

[0013] -0.80 < fG1 / fG2 < -0.20;

[0014] 3.00 degrees < HFOVSf < 35.00 degrees; and

[0015] -2.00 < RG1i / RG2o < -0.65.

[0016] The present disclosure further provides an imaging lens system, which includes two lens groups. The two lens groups are sequentially the first lens group and the second lens group along the optical path from the object side to the image side, and all the lenses of the two lens groups respectively have an object side surface facing the object side direction and an image side surface facing the image side direction. The total number of lens groups of the imaging lens system is two. Preferably, the imaging lens system has a first state corresponding to an infinite object distance and a second state corresponding to a finite object distance. Preferably, when an object moves from an infinite object distance to a finite object distance, the imaging lens system undergoes a focusing process to change from the first state to the second state. Preferably, the imaging lens system in the first state has a first telephoto state corresponding to the telephoto end and a first short focal state corresponding to the short focal end during a zooming process. Preferably, at least one of the two lens groups moves along the optical axis direction during the zooming process. Preferably, at least one of the object side surface and the image side surface of at least one lens in the two lens groups has at least one inflection point at an off-axis position. Preferably, the imaging lens system sequentially includes a first lens, a second lens, a third lens, and a fourth lens along the optical path from the object side to the image side, and the lens with the maximum thickness on the optical axis in the imaging lens system is the third lens or the fourth lens. The total focal length of the imaging lens system in the first telephoto state is fLf, the total focal length of the imaging lens system in the first short focal state is fSf, the focal length of the first lens group is fG1, the focal length of the second lens group is fG2, the radius of curvature of the image side surface of the third lens is R6, and the radius of curvature of the object side surface of the fourth lens is R7, which preferably satisfy the following conditions:

[0017] 1.20 < fLf / fSf < 2.00;

[0018] -0.80 < fG1 / fG2 < -0.20; and

[0019] -2.00 < R6 / R7 < -0.65.

[0020] The present disclosure provides an image pickup device, which includes the aforementioned imaging lens system and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the imaging lens system.

[0021] The present disclosure provides an electronic device, which includes a first image pickup device and a second image pickup device. The first image pickup device includes the aforementioned image pickup device, and half of the maximum viewing angle in the first image pickup device falls within the range of 3 degrees to 35 degrees. The second image pickup device is on the same side of the electronic device as the first image pickup device, and half of the maximum viewing angle in the second image pickup device falls within the range of 35 degrees to 70 degrees.

[0022] The imaging lens system, image capture device, and electronic device disclosed herein can be tailored to the thickness limitations of the electronic device by cutting sections of the lens barrel or lens to reduce the single-axis length, thereby reducing lens size and further achieving module miniaturization. Additionally, reflective elements can be incorporated to provide different optical path orientations for the overall system, giving the lens more flexible usage space to showcase the telephoto capabilities of a long focal length. Furthermore, through the grouping design of the lens groups, the focal length of the imaging lens system can be adjusted according to the distance (object distance) of the photographed object by varying the spacing of each lens group, thus achieving zoom and focus. This ensures high image quality for both distant and close-up shots, enhancing the freedom of lens shooting.

[0023] When fLf / fSf meets the above conditions, the optical zoom ratio can be increased, which helps to improve the shooting quality in the medium and long focal length range.

[0024] When fG1 / fG2 meets the above conditions, the refractive power distribution of the first lens group and the second lens group can be adjusted to converge the light, which helps to control the shooting angle and increase the amount of light entering at the same time.

[0025] When R6 / R7 meets the above conditions, the light distribution and light converging ability between the image-side surface of the third lens and the object-side surface of the fourth lens can be controlled, which helps to control the exit angle of light on the image-side surface of the third lens and the incident angle of light on the object-side surface of the fourth lens and reduce sensitivity.

[0026] When HFOVSf meets the above conditions, the camera lens system can have an appropriate angle of view to suit applications in the medium to long focal length range.

[0027] When RG1i / RG2o meets the above conditions, the light distribution and light convergence ability between the lens surface closest to the image side of the first lens group and the lens surface closest to the object side of the second lens group can be controlled, which helps to control the exit angle of the light at the lens surface closest to the image side of the first lens group and the incident angle at the lens surface closest to the object side of the second lens group and reduce sensitivity.

[0028] The foregoing description of the contents of this disclosure and the following description of the embodiments are used to demonstrate and explain the spirit and principles of this disclosure, and to provide a further explanation of the claims of this disclosure. Attached Figure Description

[0029] Figure 1 The diagram illustrates the imaging device according to the first embodiment of this disclosure in a first state at the short focal length end and a first state at the long focal length end.

[0030] Figure 2 From left to right, the images show the spherical aberration, astigmatism, and distortion curves of the imaging device of the first embodiment in the first state at the short focal length.

[0031] Figure 3 From left to right, the images show the spherical aberration, astigmatism, and distortion curves of the imaging device of the first embodiment in the first state at the telephoto end.

[0032] Figure 4 The diagram illustrates the imaging device according to the second embodiment of this disclosure in a first state at the short focal length end and a first state at the long focal length end.

[0033] Figure 5 From left to right, the images show the spherical aberration, astigmatism, and distortion curves of the imaging device of the second embodiment in the first state at the short focal length.

[0034] Figure 6 From left to right, the images show the spherical aberration, astigmatism, and distortion curves of the imaging device of the second embodiment in the first state at the telephoto end.

[0035] Figure 7 The diagram illustrates the imaging device according to the third embodiment of this disclosure in a first state at the short focal length end and a first state at the long focal length end.

[0036] Figure 8 From left to right, the images show the spherical aberration, astigmatism, and distortion curves of the imaging device of the third embodiment in the first state at the short focal length.

[0037] Figure 9 From left to right, the images show the spherical aberration, astigmatism, and distortion curves of the imaging device of the third embodiment in the first state at the telephoto end.

[0038] Figure 10 A perspective view of an imaging device according to a fourth embodiment of the present disclosure is shown.

[0039] Figure 11 A perspective view of one side of an electronic device according to a fifth embodiment of this disclosure is shown.

[0040] Figure 12 Draw Figure 11 A three-dimensional diagram of the other side of the electronic device.

[0041] Figure 13 A perspective view of one side of an electronic device according to the sixth embodiment of this disclosure is shown.

[0042] Figure 14 Draw Figure 13 A three-dimensional diagram of the other side of the electronic device.

[0043] Figure 15 Draw Figure 13 System block diagram of an electronic device.

[0044] Figure 16A perspective view of one side of an electronic device according to the seventh embodiment of this disclosure is shown.

[0045] Figure 17 A schematic diagram illustrating the inflection point and critical point of a portion of the lens of an image-taking device in a first state at the short focal length end according to the first embodiment of this disclosure.

[0046] Figure 18 A schematic diagram illustrating one configuration of the reflective element in a camera lens system according to the present disclosure is shown.

[0047] Figure 19 A schematic diagram illustrating another configuration of the reflective element in a camera lens system according to the present disclosure is shown.

[0048] Figure 20 A schematic diagram illustrating another configuration of the reflective element in a camera lens system according to this disclosure is shown.

[0049] Figure 21 A schematic diagram illustrating one configuration of two reflective elements in a camera lens system according to the present disclosure is shown.

[0050] Figure 22 A schematic diagram illustrating another configuration of the two reflective elements in a camera lens system according to the present disclosure is shown.

[0051] [Symbol Explanation]

[0052] 1, 2, 3, 100, 100a, 100b, 100c, 100d, 100e, 100f, 100g, 100h, 100i, 100j, 100k, 100m, 100n, 100p, 100q, 100r: imaging device

[0053] 101: Imaging Lens

[0054] 102: Drive unit

[0055] 103: Electronic photosensitive element

[0056] 104: Image Stabilization Module

[0057] 200, 300, 400: Electronic devices

[0058] 201, 304: Display module

[0059] 301, 401: Flash module

[0060] 302: Focusing Assist Module

[0061] 303: Image Signal Processor

[0062] 305: Image Software Processor

[0063] 306: Subject

[0064] P: Inversion point

[0065] C: Critical point

[0066] LG: Lens Group

[0067] FT: Filter element

[0068] LF, LF1, LF2: Reflective elements

[0069] LP1, LP2: Penetration surface

[0070] RF1, RF2: Reflecting surfaces

[0071] OA: Optical Axis

[0072] OA1: First optical axis

[0073] OA2: Second optical axis

[0074] OA3: Third optical axis

[0075] ST: Aperture

[0076] S1, S2, S3: Aperture

[0077] E1: First lens

[0078] E2: Second lens

[0079] E3: Third Lens

[0080] E4: Fourth Lens

[0081] E5: Fifth Lens

[0082] E6: Sixth Lens

[0083] E7: Filter element

[0084] IMG: Imaging Surface

[0085] IS: Electronic photosensitive element

[0086] G1: First lens group

[0087] G2: Second lens group Detailed Implementation

[0088] The camera lens system can sequentially include a first lens, a second lens, a third lens, and a fourth lens along the optical path from the object side to the image side.

[0089] A camera lens system can comprise two lens groups. These two lens groups, arranged sequentially from the object side to the image side along the optical path, can be a first lens group and a second lens group. Each lens group can contain six lenses. These six lenses, arranged sequentially from the object side to the image side along the optical path, can be a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The total number of lens groups in the camera lens system can be two. The first lens group can contain a first lens, a second lens, and a third lens, and the second lens group can contain a fourth lens, a fifth lens, and a sixth lens. Each lens can have an object-side surface facing the object side and an image-side surface facing the image side. In this way, the camera lens system, through the configuration of a total of two lens groups, achieves a balance between overall size, zoom ratio, object distance range, focus shift, image quality, and ease of assembly, thereby realizing optical zoom and optical focusing in the medium to long focal length range.

[0090] The imaging lens system can have a first state corresponding to an infinity object distance and a second state corresponding to a finite object distance. The first state can be the state of the imaging lens system when the subject is at infinity (infinity object distance), and the second state can be the state of the imaging lens system when the subject is at a finite object distance (finite object distance). In this disclosure, the finite object distance can be when the subject is significantly closer to the imaging lens system relative to infinity. The infinity object distance refers to a distance on the optical axis between the object-side surface of the subject and the lens (e.g., the first lens) closest to the object side in the imaging lens system, which is more than 1000 meters. The finite object distance refers to a distance on the optical axis between the object-side surface of the subject and the lens (e.g., the first lens) closest to the object side in the imaging lens system, which is less than 5 meters. When the subject moves from infinity to the finite object distance, the imaging lens system can perform a focusing process to change from the first state to the second state. Conversely, when the subject moves from a finite object distance to an infinity object distance, the camera lens system can also perform a focusing process to transition from the second state to the first state. At least one of the two lens groups can move along the optical axis during focusing. Specifically, the second lens group can move along the optical axis during focusing. This allows the overall lens structure of the camera lens system to remain within the object-side range during focusing, improving lens operability and robustness, and simplifying optical design and mechanical complexity. Furthermore, the lenses in either the first or second lens group can remain stationary relative to each other during focusing. This further simplifies the mechanical complexity.

[0091] When the camera lens system is in its first state, it can have both a telephoto-end first state and a short-focal-end first state corresponding to the telephoto end and the short-focal-end first state during zooming. At least one of the two lens groups can move along the optical axis during zooming. Please refer to... Figure 1This is a schematic diagram illustrating the imaging lens system in the imaging device according to the first embodiment of the present disclosure in a first state at the short focal length end and a first state at the long focal length end, wherein... Figure 1 The upper part is a schematic diagram of the camera lens system in its first state at the short focal length end, while Figure 1 The lower half of the diagram shows the imaging lens system in its first state at the telephoto end. The second lens group can move along the optical axis during zooming. This prevents the overall lens structure of the imaging lens system from stretching or contracting towards the object side during zooming, improving lens operability and robustness, and simplifying optical design and mechanical complexity. Furthermore, the lenses in either the first or second lens group do not need to move relative to each other during zooming. This further simplifies the mechanism's complexity.

[0092] Similarly, when the camera lens system is in the second state, the camera lens system can have a telephoto end second state corresponding to the telephoto end and a short focal length end second state corresponding to the short focal length end during the zoom process.

[0093] In a camera lens system, the lens with the greatest thickness along the optical axis can be the lens closest to the image side in the first lens group or the lens closest to the object side in the second lens group. This helps to increase the refractive power of the lens closest to the image side in the first lens group or the lens closest to the object side in the second lens group, shortens the distance between the lens closest to the image side in the first lens group and the lens closest to the object side in the second lens group in both the first and second states, and reduces the overall length of the camera lens system. The lens with the greatest thickness along the optical axis in the camera lens system can be a third lens or a fourth lens. This helps to increase the refractive power of the third lens or the fourth lens, shortens the distance between the third and fourth lenses in both the first and second states, and reduces the overall length of the camera lens system. In one embodiment, the lens closest to the image side in the first lens group can be the third lens. In another embodiment, the lens closest to the object side in the second lens group can be the fourth lens.

[0094] The lens closest to the image side in the first lens group can have positive refractive power. This balances the refractive power of the first lens group and the refractive power of the lens closest to the object side in the second lens group in controlling the spatial distribution of the optical path at different focal lengths, thereby improving image quality at different focal lengths.

[0095] The third lens can have positive refractive power. This balances the refractive power of the second lens on the object side and the fourth lens on the image side, thereby improving the light-gathering ability between the second and fourth lenses and reducing aberrations.

[0096] The sixth lens can have negative refractive power. This balances the refractive power of the camera lens system at the image side, thereby improving the light-gathering quality of rays from each field of view at the imaging plane and reducing aberrations. The image side surface of the sixth lens can be concave near the optical axis. This helps balance the back focal length of the camera lens system and corrects off-axis aberrations.

[0097] In the imaging lens system disclosed herein, at least one lens may have at least one inflection point off-axis on at least one of its object-side surface and image-side surface. This increases the freedom of optical design, facilitating astigmatism correction. Specifically, the sixth lens may have at least one inflection point off-axis on its image-side surface. This allows control over the angle of light rays passing through the periphery of the sixth lens's image-side surface, helping to maintain optical illumination and avoid excessive aberrations caused by excessive light deflection angles. Please refer to... Figure 17 This is a schematic diagram illustrating the inflection point P of the image-capturing device in the first embodiment of the present disclosure, which is in the first state at the short focal length end, and the image-side surface of the first lens E1, the object-side surface of the second lens E2, the image-side surface of the third lens E3, the image-side surface of the fourth lens E4, the object-side surface of the fifth lens E5, the image-side surface of the fifth lens E5, the object-side surface of the sixth lens E6, and the image-side surface of the sixth lens E6. Figure 17 The inflection points of the first lens image-side surface, the second lens object-side surface, the third lens object-side surface, the fourth lens image-side surface, the fifth lens object-side surface, the fifth lens image-side surface, the sixth lens object-side surface, and the sixth lens image-side surface are illustrated as examples in the first embodiment. However, in the embodiments disclosed herein, each lens surface may have one or more inflection points off-axis.

[0098] In the imaging lens system disclosed in this disclosure, at least one lens may have at least one critical point off-axis on at least one of its object-side surface and its image-side surface. This enhances the ability to correct peripheral image aberrations. Please refer to... Figure 17 This is a schematic diagram illustrating the critical points C of the image-capturing device in the first embodiment of the present disclosure, which is in the first state at the short focal length end, and the image-side surface of the first lens E1, the object-side surface of the second lens E2, the image-side surface of the second lens E2, the object-side surface of the third lens E3, the image-side surface of the fourth lens E4, the object-side surface of the fifth lens E5, the image-side surface of the fifth lens E5, and the object-side surface of the sixth lens E6. Figure 17 The critical points of the image-side surface of the first lens, the object-side surface of the second lens, the image-side surface of the third lens, the image-side surface of the fourth lens, the object-side surface of the fifth lens, and the object-side surface of the sixth lens in the first embodiment are illustrated as examples. However, in the embodiments disclosed herein, each lens surface may have one or more critical points at the off-axis.

[0099] The imaging lens system disclosed herein may include at least one reflective element with light path deflection function, such as a prism or reflective mirror, between the object and the imaging plane in the optical path. The reflective element may be located between the object and the first lens group. The reflective element may have at least one reflective surface, and the light path passing through the at least one reflective surface of the reflective element may be reflected at least once. This facilitates compression of the overall volume, allows the imaging lens system to have different light path orientations, provides more flexible spatial configuration of the imaging lens system, and enables the thinning and lightening of electronic devices without being limited by the total optical length of the imaging lens system. This helps reduce structural limitations and miniaturize the lens, thereby achieving more stringent specification requirements.

[0100] The angle between the normal direction of the reflecting surface and the optical axis is not limited to 45 degrees and can be other angles depending on spatial configuration and other requirements. The reflecting element can deflect the light path from the optical axis near the object side to the optical axis near the image side. The angle between the optical axis vector near the object side and the optical axis vector near the image side can be any angle, not limited to 0, 90, or 180 degrees. In addition, for reasons such as reducing the volume occupied, the length and width of the mirror can be unequal, and the length, width, and height of the prism can also be unequal. The surface shape of the reflecting element (e.g., the surface shape of the prism surface or the mirror surface) can be planar, spherical, aspherical, or freeform, etc., depending on the optical design requirements, but this disclosure is not limited to these. The reflecting element can be composed of more than one prism, depending on the design requirements. The prism can be made of materials such as glass or plastic, depending on the design requirements. In addition, prisms with light path deflection functions are not counted in the lens described above; that is, the lens of the camera lens system does not include prisms with light path deflection functions.

[0101] For further explanation, please refer to Figures 18 to 20 These are schematic diagrams illustrating the configuration of a reflective element according to this disclosure in a camera lens system. For example... Figures 18 to 20 As shown, the imaging lens system, along the optical path direction from the subject (not shown) to the imaging surface IMG, sequentially includes a reflective element LF, a lens group LG, a filter element FT, and the imaging surface IMG. The lens group LG corresponds to the two lens groups disclosed in this invention.

[0102] exist Figure 18 In this structure, the reflecting element LF is a prism, which sequentially has a first transmitting surface LP1, a reflecting surface RF1, and a second transmitting surface LP2 along the optical path. The optical path travels along the first optical axis OA1, passes through the first transmitting surface LP1, and reaches the reflecting surface RF1. The reflecting surface RF1 redirects the optical path from the first optical axis OA1 to the second optical axis OA2. The optical path then travels along the second optical axis OA2, passes through the second transmitting surface LP2, and then through the lens group LG and the filter element FT, finally reaching the imaging surface IMG. Figure 18As shown, the first penetrating surface LP1 and the second penetrating surface LP2 of the reflective element LF can both be planar.

[0103] exist Figure 19 In the image, the reflecting element LF is a plane mirror with a reflecting surface RF1. The light path travels along the first optical axis OA1 to the reflecting surface RF1, where the reflecting surface RF1 turns the light path from the first optical axis OA1 to the second optical axis OA2. The light path then travels along the second optical axis OA2 through the lens group LG and the filter element FT, and finally reaches the imaging surface IMG.

[0104] exist Figure 20 In this structure, the reflecting element LF is a prism, which sequentially has a first transmitting surface LP1, a reflecting surface RF1, and a second transmitting surface LP2 along the optical path. The optical path travels along the first optical axis OA1, passes through the first transmitting surface LP1, and reaches the reflecting surface RF1. The reflecting surface RF1 redirects the optical path from the first optical axis OA1 to the second optical axis OA2. The optical path then travels along the second optical axis OA2, passes through the second transmitting surface LP2, and then through the lens group LG and the filter element FT, finally reaching the imaging surface IMG. Figure 20 As shown, the first penetrating surface LP1 and the second penetrating surface LP2 of the reflective element LF can both be curved surfaces.

[0105] In addition, please refer to Figure 21 and Figure 22 This is a schematic diagram illustrating the configuration of two reflective elements according to this disclosure in a camera lens system. For example... Figure 21 and Figure 22 As shown, the imaging lens system, traveling along the optical path from the subject (not shown) to the imaging surface IMG, sequentially includes a first reflecting element LF1, a lens group LG, a filter element FT, a second reflecting element LF2, and the imaging surface IMG. The optical path travels along the first optical axis OA1 to the first reflecting surface RF1 of the first reflecting element LF1, and the first reflecting surface RF1 deflects the optical path from the first optical axis OA1 to the second optical axis OA2. The optical path travels along the second optical axis OA2 through the lens group LG and the filter element FT. Next, the optical path travels along the second optical axis OA2 to the second reflecting surface RF2 of the second reflecting element LF2, and the second reflecting surface RF2 deflects the optical path from the second optical axis OA2 to the third optical axis OA3. The optical path travels along the third optical axis OA3 to the imaging surface IMG. Figure 21 In this context, both the first reflecting element LF1 and the second reflecting element LF2 can be prisms. Figure 22 In this system, the first reflecting element LF1 and the second reflecting element LF2 can be a prism and a plane mirror, respectively.

[0106] In the imaging lens system disclosed in the present disclosure, the first lens group may have no relative movement with respect to the reflecting surface during the zooming process or the focusing process. Thereby, the overall lens structure of the imaging lens system can be prevented from telescoping toward the object side due to zooming or focusing, which helps to improve the operability and firmness of the lens, and can simplify the optical design and the complexity of the mechanism.

[0107] In the imaging lens system disclosed in the present disclosure, the imaging surface may move along the optical axis direction during the zooming process or the focusing process. Thereby, whether it is zoom shooting or close-up focusing, focusing can be performed by moving the imaging surface along the optical axis direction, which helps to improve the light-gathering quality in various shooting states.

[0108] The total focal length of the imaging lens system in the first state at the long focal end is fLf, and the total focal length of the imaging lens system in the first state at the short focal end is fSf, which can satisfy the following conditions: 1.20 < fLf / fSf < 2.00. Thereby, the optical zoom ratio can be increased, which helps to improve the shooting quality in the medium and long focal length ranges. Among them, the following conditions can also be satisfied: 1.10 < fLf / fSf < 1.70. Among them, the following conditions can also be satisfied: 1.20 < fLf / fSf < 1.70. Among them, the following conditions can also be satisfied: 1.10 < fLf / fSf < 1.40. Among them, the following conditions can also be satisfied: 1.20 < fLf / fSf < 1.40. Among them, the following conditions can also be satisfied: 1.33 ≤ fLf / fSf ≤ 1.34.

[0109] The focal length of the first lens group is fG1, and the focal length of the second lens group is fG2, which can satisfy the following conditions: -0.80 < fG1 / fG2 < -0.20. Thereby, the refractive power distribution between the first lens group and the second lens group can be adjusted to converge the light rays, which helps to simultaneously control the shooting angle of view and increase the light incident amount. Among them, the following conditions can also be satisfied: -0.70 < fG1 / fG2 < -0.30. Among them, the following conditions can also be satisfied: -0.60 < fG1 / fG2 < -0.40. Among them, the following conditions can also be satisfied: -0.51 ≤ fG1 / fG2 ≤ -0.47.

[0110] The radius of curvature of the image-side surface of the third lens is R6, and the radius of curvature of the object-side surface of the fourth lens is R7, which can satisfy the following conditions: -2.00 < R6 / R7 < -0.65. Thereby, the light distribution state and the light convergence ability between the image-side surface of the third lens and the object-side surface of the fourth lens can be controlled, which helps to control the exit angle of the light rays on the image-side surface of the third lens and the incident angle of the light rays on the object-side surface of the fourth lens and reduce the sensitivity. Among them, the following conditions can also be satisfied: -1.60 < R6 / R7 < -0.65. Among them, the following conditions can also be satisfied: -1.30 < R6 / R7 < -0.70. Among them, the following conditions can also be satisfied: -1.22 ≤ R6 / R7 ≤ -0.76.

[0111] Half of the maximum viewing angle of the imaging lens system in the first state at the short focal end is HFOVSf, which can satisfy the following conditions: 3.00 degrees < HFOVSf < 35.00 degrees. Thereby, the imaging lens system can have an appropriate viewing angle to match the applications in the medium and long focal length ranges. Among them, the following conditions can also be satisfied: 4.00 degrees < HFOVSf < 33.00 degrees. Among them, the following conditions can also be satisfied: 5.00 degrees < HFOVSf < 25.00 degrees. Among them, the following conditions can also be satisfied: 14.67 degrees ≤ HFOVSf ≤ 17.09 degrees.

[0112] The radius of curvature of the image-side surface of the lens closest to the image side in the first lens group of the imaging lens system is RG1i, and the radius of curvature of the object-side surface of the lens closest to the object side in the second lens group of the imaging lens system is RG2o, which can satisfy the following conditions: -2.00 < RG1i / RG2o < -0.65. Thereby, the light distribution state and light converging ability between the surface of the lens closest to the image side in the first lens group and the surface of the lens closest to the object side in the second lens group can be controlled, which helps to control the exit angle of light on the surface of the lens closest to the image side in the first lens group and the incident angle of light on the surface of the lens closest to the object side in the second lens group and reduce the sensitivity. Among them, the following conditions can also be satisfied: -1.60 < RG1i / RG2o < -0.65. Among them, the following conditions can also be satisfied: -1.30 < RG1i / RG2o < -0.70. Among them, the following conditions can also be satisfied: -1.22 ≤ RG1i / RG2o ≤ -0.76.

[0113] Half of the maximum viewing angle of the imaging lens system in the first state at the short focal end is HFOVSf, and half of the maximum viewing angle of the imaging lens system in the first state at the long focal end is HFOVLf, which can satisfy the following conditions: 1.20 < HFOVSf / HFOVLf < 2.50. Thereby, the optical zoom ratio can be increased, which helps to improve the shooting quality and shooting diversity in the medium and long focal length ranges. Among them, the following conditions can also be satisfied: 1.25 < HFOVSf / HFOVLf < 1.80. Among them, the following conditions can also be satisfied: 1.30 < HFOVSf / HFOVLf < 1.50.

[0114] For the camera lens system in the first state at the short focal length end, the distance on the optical axis from the object-side surface of the lens closest to the object side to the image-side surface of the lens closest to the image side is TDSf, and for the camera lens system in the first state at the long focal length end, the distance on the optical axis from the object-side surface of the lens closest to the object side to the image-side surface of the lens closest to the image side is TDLf. The distance on the optical axis from the object-side surface of the lens closest to the object side to the imaging surface for the camera lens system in the first state at the short focal length end is TLSf, and it can satisfy the following condition: 0.20 < (TDSf - TDLf) / TLSf < 0.70. Thus, for the optical zoom of the camera lens system covering the medium to long focal length range, it helps to achieve a balance between maintaining the movement amount of the lens group and the overall optical length. Among them, it can also satisfy the following condition: 0.25 < (TDSf - TDLf) / TLSf < 0.60. Among them, it can also satisfy the following condition: 0.30 < (TDSf - TDLf) / TLSf < 0.50. In an embodiment, the lens closest to the object side in the camera lens system can be the first lens, and the lens closest to the image side in the camera lens system can be the sixth lens.

[0115] For the camera lens system in the first state at the short focal length end, the distance on the optical axis from the object-side surface of the lens closest to the object side to the imaging surface is TLSf, and for the camera lens system in the first state at the long focal length end, the distance on the optical axis from the object-side surface of the lens closest to the object side to the imaging surface is TLLf, and it can satisfy the following condition: 0.00 ≤ 10×|TLSf - TLLf| / TLSf < 1.00. Thus, a relatively constant overall optical length can be maintained during the zooming and focusing processes, which helps to simplify the complexity of the mechanism design, facilitate lens assembly, and improve the qualified rate. Among them, it can also satisfy the following condition: 0.01 < 10×|TLSf - TLLf| / TLSf < 0.50. Among them, it can also satisfy the following condition: 0.05 < 10×|TLSf - TLLf| / TLSf < 0.20.

[0116] For the camera lens system in the first state at the short focal length end, the F-number is FnoSf, and it can satisfy the following condition: 1.50 < FnoSf < 4.00. Thus, the F-number at the short focal length end can be adjusted to achieve a balance between illuminance and depth of field and enhance the light input to improve the image quality. Among them, it can also satisfy the following condition: 1.80 < FnoSf < 3.50. Among them, it can also satisfy the following condition: 2.00 < FnoSf < 3.00.

[0117] The aperture value of the imaging lens system in the first state at the telephoto end is FnoLf, which can satisfy the following conditions: 1.80 < FnoLf < 4.50. Thereby, the aperture value at the telephoto end can be adjusted to balance the illuminance and the depth of field, and enhance the light input to improve the image quality. Among them, the following conditions can also be satisfied: 2.00 < FnoLf < 4.20. Among them, the following conditions can also be satisfied: 2.50 < FnoLf < 3.80.

[0118] The focal length of the second lens is f2, and the focal length of the fifth lens is f5, which can satisfy the following conditions: 0.00 < f2 / f5 < 5.00. Thereby, it helps to balance the light distribution states before and after the second lens and before and after the fifth lens and reduce the sensitivity. Among them, the following conditions can also be satisfied: 0.00 < f2 / f5 < 4.50.

[0119] The distance from the object-side surface of the lens closest to the object side in the first state at the short focal end of the imaging lens system to the imaging surface on the optical axis is TLSf, and the maximum imaging height of the imaging lens system (which can be half of the total length of the diagonal of the effective sensing area of the electronic photosensitive element) is ImgH, which can satisfy the following conditions: 3.50 < TLSf / ImgH < 7.50. Thereby, the total length of the imaging lens system and the imaging height at the short focal end can be balanced to enhance the shooting experience of portrait photography and help highlight the subject of the photographed person. Among them, the following conditions can also be satisfied: 4.00 < TLSf / ImgH < 7.00.

[0120] The distance from the object-side surface of the lens closest to the object side in the first state at the telephoto end of the imaging lens system to the imaging surface on the optical axis is TLLf, and the maximum imaging height of the imaging lens system is ImgH, which can satisfy the following conditions: 3.50 < TLLf / ImgH < 7.50. Thereby, the total length of the imaging lens system and the imaging height at the telephoto end can be balanced to provide a shallow depth of field, which helps to blur the background in the distance and adjust the sense of distance of the scenery, etc. Among them, the following conditions can also be satisfied: 4.00 < TLLf / ImgH < 7.00.

[0121] The distance on the optical axis from the object-side surface of the lens closest to the object side in the first lens group to the image-side surface of the lens closest to the image side in the first lens group is TG1, and the distance on the optical axis from the object-side surface of the lens closest to the object side in the second lens group to the image-side surface of the lens closest to the image side in the second lens group is TG2, and the following conditions can be satisfied: 0.50 < TG1 / TG2 < 4.50. Thereby, the length of the first lens group on the optical axis and the length of the second lens group on the optical axis can be adjusted, which helps to balance the spatial arrangement of the lenses to reduce the sensitivity of the imaging lens system during the zooming process or the focusing process. Among them, the following conditions can also be satisfied: 1.00 < TG1 / TG2 < 3.00. Among them, the following conditions can also be satisfied: 1.20 < TG1 / TG2 < 1.80. In an embodiment, the lens closest to the object side in the first lens group can be the first lens, the lens closest to the image side in the first lens group can be the third lens, the lens closest to the object side in the second lens group can be the fourth lens, and the lens closest to the image side in the second lens group can be the sixth lens.

[0122] The aperture value of the imaging lens system in the first state at the short focal end is FnoSf, and the aperture value of the imaging lens system in the second state at the short focal end is FnoSn, and the following conditions can be satisfied: 0.01 < 10×|FnoSn - FnoSf| < 1.00. Thereby, during the focusing process, a balance can be achieved between the amount of light entering at the short focal end when shooting a distant scene and the amount of light entering at the short focal end when shooting a nearby scene. Among them, the following conditions can also be satisfied: 0.05 < 10×|FnoSn - FnoSf| < 0.80. Among them, the following conditions can also be satisfied: 0.05 < 10×|FnoSn - FnoSf| < 0.50.

[0123] The aperture value of the imaging lens system in the first state at the long focal end is FnoLf, and the aperture value of the imaging lens system in the second state at the long focal end is FnoLn, and the following conditions can be satisfied: 0.01 < 10×|FnoLn - FnoLf| < 1.00. Thereby, during the focusing process, a balance can be achieved between the amount of light entering at the long focal end when shooting a distant scene and the amount of light entering at the long focal end when shooting a nearby scene. Among them, the following conditions can also be satisfied: 0.10 < 10×|FnoLn - FnoLf| < 0.80. Among them, the following conditions can also be satisfied: 0.20 < 10×|FnoLn - FnoLf| < 0.60.

[0124] For the lens closest to the object side in the first state at the short focal end of the imaging lens system, the distance from its object side surface to the imaging surface on the optical axis is TLSf. For the lens closest to the object side in the second state at the short focal end of the imaging lens system, the distance from its object side surface to the imaging surface on the optical axis is TLSn. The total focal length of the imaging lens system in the first state at the short focal end is fSf, and the total focal length of the imaging lens system in the second state at the short focal end is fSn. The following conditions can be satisfied: 0.10 < 10×(TLSn / fSn - TLSf / fSf) < 0.80. Thus, during the focusing process, a balance can be achieved between the ratio of the short focal end volume to the viewing angle when shooting a distant scene and the ratio of the short focal end volume to the viewing angle when shooting a close-up scene. Among them, the following conditions can also be satisfied: 0.15 < 10×(TLSn / fSn - TLSf / fSf) < 0.50. Among them, the following conditions can also be satisfied: 0.18 < 10×(TLSn / fSn - TLSf / fSf) < 0.30.

[0125] For the lens closest to the object side in the first state at the long focal end of the imaging lens system, the distance from its object side surface to the imaging surface on the optical axis is TLLf. For the lens closest to the object side in the second state at the long focal end of the imaging lens system, the distance from its object side surface to the imaging surface on the optical axis is TLLn. The total focal length of the imaging lens system in the first state at the long focal end is fLf, and the total focal length of the imaging lens system in the second state at the long focal end is fLn. The following conditions can be satisfied: 0.10 < 10×(TLLn / fLn - TLLf / fLf) < 0.80. Thus, during the focusing process, a balance can be achieved between the ratio of the long focal end volume to the viewing angle when shooting a distant scene and the ratio of the long focal end volume to the viewing angle when shooting a close-up scene. Among them, the following conditions can also be satisfied: 0.15 < 10×(TLLn / fLn - TLLf / fLf) < 0.65. Among them, the following conditions can also be satisfied: 0.18 < 10×(TLLn / fLn - TLLf / fLf) < 0.50.

[0126] The radius of curvature of the image side surface of the third lens is R6, and the thickness of the third lens on the optical axis is CT3. The following conditions can be satisfied: -10.00 < R6 / CT3 < 0.00. Thus, the refractive power of the third lens can be controlled, the light distribution state on the object side of the third lens can be balanced, which helps to improve the light converging ability and reduce the sensitivity of the third lens. Among them, the following conditions can also be satisfied: -8.00 < R6 / CT3 < -0.50. Among them, the following conditions can also be satisfied: -6.00 < R6 / CT3 < -1.00.

[0127] The radius of curvature of the object-side surface of the fourth lens is R7, and the thickness of the fourth lens on the optical axis is CT4, which can satisfy the following conditions: 0.00 < R7 / CT4 < 10.00. Thereby, the refractive power of the fourth lens can be controlled, the light distribution state on the image side of the fourth lens can be balanced, which helps to improve the light converging ability and reduce the sensitivity of the fourth lens. Among them, the following conditions can also be satisfied: 1.00 < R7 / CT4 < 8.00. Among them, the following conditions can also be satisfied: 2.00 < R7 / CT4 < 6.00.

[0128] The displacement amount of the imaging surface during the process of the imaging lens system changing from the first state at the short focal end to the second state at the short focal end is DImgS, which can satisfy the following conditions: 0.050 mm < DImgS < 0.800 mm. Thereby, whether it is zoom shooting or close-up focusing, the focusing can be performed by moving the imaging surface along the optical axis direction, which helps to improve the light-gathering quality in various shooting states. Among them, the following conditions can also be satisfied: 0.100 mm < DImgS < 0.600 mm. Among them, the following conditions can also be satisfied: 0.150 mm < DImgS < 0.500 mm.

[0129] The displacement amount of the imaging surface during the process of the imaging lens system changing from the first state at the short focal end to the second state at the short focal end is DImgS, and the minimum value of the thickness of a single lens on the optical axis among all the lenses of the imaging lens system is CTmin, which can satisfy the following conditions: 0.10 < DImgS / CTmin < 1.50. Thereby, the ratio of the imaging surface movement amount to the minimum lens thickness can be maintained, and the displacement of the electronic photosensitive element can be performed under the limitation of the lens thickness process, which helps to improve the contrast and clarity of the image during zoom shooting or close-up focusing. Among them, the following conditions can also be satisfied: 0.15 < DImgS / CTmin < 1.00. Among them, the following conditions can also be satisfied: 0.20 < DImgS / CTmin < 0.80.

[0130] All the technical features in the imaging lens system disclosed in the present disclosure can be combined and configured to achieve the corresponding effects.

[0131] In the camera lens system disclosed in this invention, the lens material can be glass or plastic. If the lens is made of glass, the freedom of refractive power configuration of the camera lens system can be increased, and the influence of external environmental temperature changes on imaging can be reduced. Glass lenses can be manufactured using techniques such as grinding or molding. If the lens is made of plastic, production costs can be effectively reduced. Furthermore, spherical or aspherical (ASP) surfaces can be incorporated into the lens surface. Spherical lenses reduce manufacturing difficulty, while aspherical surfaces provide more controllable variables to reduce aberrations, decrease the number of lenses, and effectively reduce the overall length of the camera lens system disclosed in this invention. Further, aspherical surfaces can be manufactured using methods such as plastic injection molding or molding glass lenses.

[0132] In the imaging lens system disclosed herein, if the lens surface is aspherical, it means that all or part of the optically effective area of ​​the lens surface is aspherical.

[0133] In the imaging lens system disclosed herein, additives can be selectively added to any (or more) lens materials to produce light absorption or interference effects, thereby altering the lens's transmittance for specific wavelengths of light and reducing stray light and color shift. For example, the additives may filter out light in the 600 nm to 800 nm wavelength range to help reduce excess red or infrared light; or they may filter out light in the 350 nm to 450 nm wavelength range to reduce excess blue or ultraviolet light. Therefore, the additives can prevent specific wavelengths of light from interfering with imaging. Furthermore, the additives can be uniformly mixed into a plastic material and manufactured into a lens using injection molding technology. Additionally, the additives can also be deposited on the lens surface as a coating to provide the aforementioned effects.

[0134] In the imaging lens system disclosed in this disclosure, if the lens surface is convex and the position of the convex surface is not defined, it means that the convex surface can be located near the optical axis of the lens surface; if the lens surface is concave and the position of the concave surface is not defined, it means that the concave surface can be located near the optical axis of the lens surface. If the refractive power or focal length of the lens is not defined in its region, it means that the refractive power or focal length of the lens can be the refractive power or focal length of the lens near the optical axis.

[0135] In the imaging lens system disclosed herein, the inflection point of the lens surface refers to the boundary point where the curvature of the lens surface changes from positive to negative. The critical point of the lens surface refers to the point of tangency on the tangent line between a plane perpendicular to the optical axis and the lens surface, and the critical point is not located on the optical axis.

[0136] In the imaging lens system disclosed herein, the imaging surface of the imaging lens system can be a plane or a curved surface with any curvature, depending on the corresponding electronic photosensitive element, especially a curved surface with a concave surface facing the object side.

[0137] In the imaging lens system disclosed herein, one or more imaging correction elements (such as planar elements) can be selectively disposed between the lens closest to the imaging surface and the imaging surface in the imaging optical path to achieve the effect of correcting image curvature (e.g., image warping). The optical properties of the imaging correction elements, such as curvature, thickness, refractive index, position, and surface type (convex or concave, spherical or aspherical, diffractive surface, and Fresnel surface, etc.), can be adjusted according to the requirements of the imaging device. Generally, a preferred configuration of the imaging correction element is to place a thin plano-concave element with a concave surface in the object-side direction close to the imaging surface.

[0138] The imaging lens system disclosed herein may include at least one aperture stop, which may be located before the first lens, between the lenses, or after the last lens. The aperture stop may be of the type such as a glare stop or a field stop, and may be used to reduce stray light and help improve image quality.

[0139] In the imaging lens system disclosed in this invention, the aperture can be configured as a front aperture or a center aperture. A front aperture means the aperture is positioned between the subject and the first lens, while a center aperture means the aperture is positioned between the first lens and the imaging plane. A front aperture allows for a longer distance between the exit pupil and the imaging plane, resulting in a telecentric effect and increasing the efficiency of image reception by the CCD or CMOS sensor. A center aperture helps to widen the field of view of the imaging lens system.

[0140] This disclosure may appropriately incorporate a variable aperture element, which can be a mechanical component or a light-regulating element, capable of electrically or signal-controlled aperture size and shape. The mechanical component may include movable parts such as blade assemblies or shielding plates; the light-regulating element may include shielding materials such as filter elements, electrochromic materials, or liquid crystal layers. The variable aperture element can enhance image adjustment capabilities by controlling the amount of light entering the image or the exposure time. Furthermore, the variable aperture element can also be the aperture of this disclosure, allowing adjustment of image quality, such as depth of field or exposure speed, by changing the aperture value.

[0141] This disclosure allows for the appropriate placement of one or more optical elements to restrict the form of light passing through a camera lens system. These optical elements may be filters, polarizers, etc., but this disclosure is not limited thereto. Furthermore, the optical elements may be monolithic elements, composite components, or thin films, but this disclosure is not limited thereto. The optical elements can be placed at the object end, image end, or between lenses in the camera lens system to control the passage of specific forms of light, thereby meeting application requirements.

[0142] The imaging lens system disclosed herein may include at least one optical lens, optical element, or carrier, at least one surface of which has a low-reflection layer, which can effectively reduce stray light generated by light reflection at the interface. The low-reflection layer may be disposed in the non-effective area of ​​the object-side surface or image-side surface of the optical lens, or on the connecting surface between the object-side surface and the image-side surface; the optical element may be a light-shielding element, an annular spacer element, a lens barrel element, a cover glass, blue glass, a filter element (color filter), a light path deflection element (reflective element), a prism, or a mirror, etc.; the carrier may be a lens mount, a microlens disposed on the photosensitive element, the periphery of the photosensitive element substrate, or a glass sheet used to protect the photosensitive element, etc.

[0143] The imaging lens system disclosed herein may further include a light-shielding element. The opening of the light-shielding element may be non-circular, and the non-circular opening may have different effective radii in different directions perpendicular to the optical axis. This allows for the use of a non-circular lens or aperture, effectively saving space and maximizing the utilization of light passing through the non-circular lens or aperture, thereby helping to reduce stray light. The periphery of the inner hole of the light-shielding element may contain a wavy or serrated structure.

[0144] In the imaging lens system disclosed herein, the object side and image side are determined according to the optical axis direction, and the data on the optical axis are calculated along the optical axis. Furthermore, if the optical axis is deflected by an optical path deflection element, the data on the optical axis are also calculated along the optical axis.

[0145] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0146] <First Embodiment>

[0147] Please refer to Figures 1 to 3 ,in Figure 1 The diagram illustrates the imaging device according to the first embodiment of this disclosure in a first state at the short focal length end and a first state at the long focal length end. Figure 2From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the imaging device of the first embodiment in the first state at the short focal length end. Figure 3 From left to right, the images show the spherical aberration, astigmatism, and distortion curves of the imaging device of the first embodiment in its first state at the telephoto end. Figure 1 The upper part is a schematic diagram of the camera lens system in its first state at the short focal length end, while Figure 1 The lower half is a schematic diagram of the camera lens system in its first state at the telephoto end. Figure 1 As can be seen, the image capturing device 1 includes a camera lens system (unlabeled) and an electronic photosensitive element IS. The camera lens system, along the optical path from the object side to the image side, sequentially includes a reflective element LF, an aperture stop S1, a first lens E1, an aperture ST, a second lens E2, a third lens E3, an aperture stop S2, an aperture stop S3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. Furthermore, the camera lens system, along the optical path from the object side to the image side, has a first lens group G1 and a second lens group G2, wherein the first lens group G1 includes the first lens E1, the second lens E2, and the third lens E3, and the second lens group G2 includes the fourth lens E4, the fifth lens E5, and the sixth lens E6. The electronic photosensitive element IS is disposed on the imaging surface IMG. The camera lens system includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between each lens.

[0148] The imaging lens system has a first state corresponding to an infinity object distance and a second state corresponding to a finite object distance. The first state is the state of the imaging lens system when the subject is at infinity (infinity object distance), and the second state is the state of the imaging lens system when the subject is at a finite object distance (finite object distance). When the subject moves from infinity to a finite object distance, the imaging lens system performs a focusing process to change from the first state to the second state. Conversely, when the subject moves from a finite object distance to infinity, the imaging lens system also performs a focusing process to change from the second state to the first state. During the focusing process, the first lens group G1 does not move relative to the reflecting surface of the reflecting element LF, the second lens group G2 moves relative to the first lens group G1 along the optical axis, and the imaging plane IMG moves along the optical axis. It is worth noting that during the focusing process, the individual lenses in either lens group do not move relative to each other.

[0149] When the camera lens system is in the first state, it has a telephoto first state corresponding to the telephoto end and a short focal length first state corresponding to the short focal length end during zooming. Specifically, when the camera lens system transitions from the telephoto first state to the short focal length first state during zooming, the second lens group G2 moves relative to the first lens group G1 along the optical axis toward the image side. Conversely, when the camera lens system transitions from the short focal length first state to the telephoto first state during zooming, the second lens group G2 moves relative to the first lens group G1 along the optical axis toward the object side. For example... Figure 1 As shown, Figure 1 The upper part is the camera lens system in its first state at the short focal length end, while... Figure 1 The lower half represents the camera lens system in its first state at the telephoto end. Similarly, when the camera lens system is in its second state, it has both a telephoto end second state corresponding to the telephoto end and a short-focal-length end second state corresponding to the short-focal-length end during zooming. During zooming, the first lens group G1 does not move relative to the reflecting surface of the reflecting element LF, the second lens group G2 moves relative to the first lens group G1 along the optical axis, and the imaging plane IMG moves along the optical axis. It is noteworthy that during zooming, the individual lenses within either lens group do not move relative to each other.

[0150] The first lens E1 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its image-side surface has a point of inflection off-axis and a critical point off-axis.

[0151] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, its image-side surface has a point of inflection off-axis, its object-side surface has a critical point off-axis, and its image-side surface has a critical point off-axis.

[0152] The third lens E3 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis and a critical point off-axis.

[0153] The fourth lens E4 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its image-side surface has two inflection points at the off-axis and two critical points at the off-axis.

[0154] The fifth lens E5 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has one inflection point off-axis, and its image-side surface has two inflection points off-axis. Its object-side surface has one critical point off-axis, and its image-side surface has one critical point off-axis.

[0155] The sixth lens E6 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, its image-side surface has two inflection points off-axis, and its object-side surface has a critical point off-axis.

[0156] The reflective element LF is made of glass and is positioned between the object and the first lens group G1 (or, more specifically, on the object side of the first lens E1), without affecting the focal length of the imaging lens system. The reflective element LF is a prism, serving as a light path deflector. For ease of explanation, Figure 1 The deflection effect of the reflective element LF on the optical path is omitted from the drawing. Both the object-side and image-side surfaces of the reflective element LF are planar, but this is not a limitation. The reflective element LF can have various forms depending on actual design requirements, thus causing different deflection effects on the optical path. For example, the reflective element LF can be as follows: Figures 18 to 20 As shown, it provides one optical path reversal. The reflective element LF uses the reflective surface RF1 to revert the optical axis OA1 to the optical axis OA2, as can be seen from the previous description. Figures 18 to 20 The relevant explanations will not be repeated here.

[0157] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging surface IMG. It does not affect the focal length of the camera lens system.

[0158] The equations for the aspherical surfaces of the above lenses are expressed as follows:

[0159]

[0160] X: The displacement parallel to the optical axis from the intersection of the aspherical surface and the optical axis to a point on the aspherical surface at a distance Y from the optical axis;

[0161] Y: The perpendicular distance between a point on the aspherical curve and the optical axis;

[0162] R: Radius of curvature;

[0163] k: cone coefficient; and

[0164] Ai: The i-th order aspherical coefficient.

[0165] In the camera lens system of the first embodiment, the lens with the maximum thickness on the optical axis is the fourth lens E4.

[0166] In the camera lens system of the first embodiment, the first lens E1 is the lens closest to the object side and the lens closest to the object side in the first lens group G1, the third lens E3 is the lens closest to the image side in the first lens group G1, the fourth lens E4 is the lens closest to the object side in the second lens group G2, and the sixth lens E6 is the lens closest to the image side and the lens closest to the image side in the second lens group G2.

[0167] The total focal length of the camera lens system in the first state at the short focal length end is fSf, the aperture value of the camera lens system in the first state at the short focal length end is FnoSf, half of the maximum angle of view of the camera lens system in the first state at the short focal length end is HFOVSf, the distance on the optical axis from the object-side surface of the lens closest to the object side to the imaging plane in the first state at the short focal length end is TLSf, and the distance on the optical axis from the object-side surface of the lens closest to the object side to the image-side surface of the lens closest to the image side in the first state at the short focal length end is TDSf, which satisfies the following conditions: fSf = 12.99 mm; FnoSf = 2.40; HFOVSf = 16.2 degrees; TLSf = 22.308 mm; and TDSf = 19.549 mm. In this embodiment, TLSf is the distance on the optical axis from the object-side surface of the first lens E1 to the imaging surface IMG in the first state at the short focal length end of the camera lens system, and TDSf is the distance on the optical axis from the object-side surface of the first lens E1 to the image-side surface of the sixth lens E6 in the first state at the short focal length end of the camera lens system.

[0168] The total focal length of the camera lens system in the first state at the telephoto end is fLf, the aperture value of the camera lens system in the first state at the telephoto end is FnoLf, half of the maximum angle of view of the camera lens system in the first state at the telephoto end is HFOVLf, the distance on the optical axis from the object-side surface of the lens closest to the object side to the imaging plane in the first state at the telephoto end is TLLf, and the distance on the optical axis from the object-side surface of the lens closest to the object side to the image-side surface of the lens closest to the image side in the first state at the telephoto end is TDLf, which satisfies the following conditions: fLf = 17.32 mm; FnoLf = 3.20; HFOVLf = 11.7 degrees; TLLf = 22.509 mm; and TDLf = 10.622 mm. In this embodiment, TLLf is the distance on the optical axis from the object-side surface of the first lens E1 to the imaging surface IMG in the first state at the telephoto end of the camera lens system, and TDLf is the distance on the optical axis from the object-side surface of the first lens E1 to the image-side surface of the sixth lens E6 in the first state at the telephoto end of the camera lens system.

[0169] The total focal length of the imaging lens system in the second state at the short focal length end is fSn, the aperture value of the imaging lens system in the second state at the short focal length end is FnoSn, half of the maximum angle of view of the imaging lens system in the second state at the short focal length end is HFOVSn, the distance on the optical axis from the object-side surface of the lens closest to the object side to the imaging plane in the second state at the short focal length end is TLSn, and the distance on the optical axis from the object-side surface of the lens closest to the object side to the image-side surface of the lens closest to the image side in the second state at the short focal length end is TDSn, which satisfies the following conditions: fSn = 12.91 mm; FnoSn = 2.41; HFOVSn = 16.1 degrees; TLSn = 22.473 mm; and TDSn = 19.780 mm. In this embodiment, TLSn is the distance on the optical axis from the object-side surface of the first lens E1 to the imaging surface IMG in the second state at the short focal length end of the camera lens system, and TDSn is the distance on the optical axis from the object-side surface of the first lens E1 to the image-side surface of the sixth lens E6 in the second state at the short focal length end of the camera lens system.

[0170] The total focal length of the camera lens system in the second state at the telephoto end is fLn, the aperture value of the camera lens system in the second state at the telephoto end is FnoLn, half of the maximum angle of view of the camera lens system in the second state at the telephoto end is HFOVLn, the distance on the optical axis from the object-side surface of the lens closest to the object side to the imaging plane in the second state at the telephoto end is TLLn, and the distance on the optical axis from the object-side surface of the lens closest to the object side to the image-side surface of the lens closest to the image side is TDLn, which satisfy the following conditions: fLn = 16.96 mm; FnoLn = 3.17; HFOVLn = 11.8 degrees; TLLn = 22.511 mm; and TDLn = 11.189 mm. In this embodiment, TLLn is the distance on the optical axis from the object-side surface of the first lens E1 to the imaging surface IMG in the second state at the telephoto end of the camera lens system, and TDLn is the distance on the optical axis from the object-side surface of the first lens E1 to the image-side surface of the sixth lens E6 in the second state at the telephoto end of the camera lens system.

[0171] In this embodiment, D0 is the distance on the optical axis between the object and the object-side surface of the reflecting element LF (approximately equivalent to the object distance of the imaging lens system), D1 is the distance on the optical axis between aperture S2 and aperture S3, D2 is the distance on the optical axis between the image-side surface of the sixth lens E6 and the filter element E7, and D3 is the distance the imaging plane IMG moves on the optical axis, wherein the moving distance is compared with the imaging lens system in the first state at the short focal length end as a reference. When the imaging lens system is in the first state at the short focal length end, the first state at the long focal length end, the second state at the short focal length end, and the second state at the long focal length end through the zooming or focusing process, the object distance of the imaging lens system will be different from the values ​​of D0 to D3. When the imaging lens system is in the first state at the short focal length end, it satisfies the following conditions: object distance = ∞ (infinity); D0 = ∞; D1 = 11.185 mm; D2 = 2.051 mm; and D3 = 0.000 mm. When the camera lens system is in its first state at the telephoto end, it satisfies the following conditions: object distance = ∞; D0 = ∞; D1 = 2.258 mm; D2 = 11.158 mm; and D3 = 0.021 mm. When the camera lens system is in its second state at the short focal length end, it satisfies the following conditions: object distance = 1508.195 mm; D0 = 1500.000 mm; D1 = 11.416 mm; D2 = 1.820 mm; and D3 = 0.165 mm. When the camera lens system is in its second state at the telephoto end, it satisfies the following conditions: object distance = 1508.195 mm; D0 = 1500.000 mm; D1 = 2.825 mm; D2 = 10.412 mm; and D3 = 0.202 mm.

[0172] The maximum angle of view of the camera lens system in the first state at the short focal length end is half of HFOVSf, and the maximum angle of view of the camera lens system in the first state at the long focal length end is half of HFOVLf, which satisfies the following condition: HFOVSf / HFOVLf=1.38.

[0173] The distance from the object-side surface of the lens closest to the object side (first lens E1) in the first state at the short focal length of the camera lens system to the imaging plane IMG on the optical axis is TLSf. The distance from the object-side surface of the lens closest to the object side (first lens E1) in the first state at the long focal length of the camera lens system to the imaging plane IMG on the optical axis is TLLf, which satisfies the following condition: 10×|TLSf-TLLf| / TLSf=0.09.

[0174] The distance on the optical axis from the object-side surface of the lens closest to the object side (first lens E1) in the first state at the short focal length of the camera lens system to the image-side surface of the lens closest to the image side (sixth lens E6) is TDSf. The distance on the optical axis from the object-side surface of the lens closest to the object side (first lens E1) in the first state at the long focal length of the camera lens system to the image-side surface of the lens closest to the image side (sixth lens E6) is TDLf. The distance on the optical axis from the object-side surface of the lens closest to the object side (first lens E1) in the first state at the short focal length of the camera lens system to the imaging plane IMG is TLSf, which satisfies the following condition: (TDSf-TDLf) / TLSf=0.40.

[0175] In the first state at the short focal length end of the camera lens system, the distance from the object-side surface of the lens closest to the object side (first lens E1) to the imaging plane IMG on the optical axis is TLSf, and the maximum imaging height of the camera lens system is ImgH, which satisfies the following condition: TLSf / ImgH=6.20.

[0176] In the first state at the telephoto end of the camera lens system, the distance from the object-side surface of the lens closest to the object side (first lens E1) to the imaging plane IMG on the optical axis is TLLf, and the maximum imaging height of the camera lens system is ImgH, which satisfies the following condition: TLLf / ImgH=6.25.

[0177] The total focal length of the camera lens system in the first state at the telephoto end is fLf, and the total focal length of the camera lens system in the first state at the short focal end is fSf, which satisfies the following condition: fLf / fSf=1.33.

[0178] The focal length of the first lens group G1 is fG1, and the focal length of the second lens group G2 is fG2, which satisfies the following condition: fG1 / fG2=-0.47.

[0179] The radius of curvature of the image-side surface of the third lens E3 is R6, and the radius of curvature of the object-side surface of the fourth lens E4 is R7, which satisfies the following condition: R6 / R7=-0.89.

[0180] The lens closest to the image side in the first lens group G1 of the camera lens system (the third lens E3) has a radius of curvature of RG1i on its image side surface, and the lens closest to the object side in the second lens group G2 of the camera lens system (the fourth lens E4) has a radius of curvature of RG2o on its object side surface, which satisfies the following condition: RG1i / RG2o=-0.89.

[0181] The distance on the optical axis from the object-side surface of the lens closest to the object side in the first lens group G1 (first lens E1) to the image-side surface of the lens closest to the image side in the first lens group G1 (third lens E3) is TG1. The distance on the optical axis from the object-side surface of the lens closest to the object side in the second lens group G2 (fourth lens E4) to the image-side surface of the lens closest to the image side in the second lens group G2 (sixth lens E6) is TG2. They satisfy the following condition: TG1 / TG2=1.48.

[0182] The aperture value of the camera lens system in the first state at the short focal length end is FnoSf, and the aperture value of the camera lens system in the second state at the short focal length end is FnoSn, which satisfies the following condition: 10×|FnoSn-FnoSf|=0.10.

[0183] The aperture value of the camera lens system in the first state at the telephoto end is FnoLf, and the aperture value of the camera lens system in the second state at the telephoto end is FnoLn, which satisfies the following condition: 10×|FnoLn-FnoLf|=0.30.

[0184] The distance from the object-side surface of the lens closest to the object side (first lens E1) in the first state at the short focal length end of the camera lens system to the imaging plane IMG on the optical axis is TLSf. The distance from the object-side surface of the lens closest to the object side (first lens E1) in the second state at the short focal length end of the camera lens system to the imaging plane IMG on the optical axis is TLSn. The total focal length of the camera lens system in the first state at the short focal length end is fSf, and the total focal length of the camera lens system in the second state at the short focal length end is fSn. They satisfy the following condition: 10×(TLSn / fSn-TLSf / fSf)=0.23.

[0185] The distance from the object-side surface of the lens closest to the object side (first lens E1) in the first state at the telephoto end of the camera lens system to the imaging plane IMG on the optical axis is TLLf. The distance from the object-side surface of the lens closest to the object side (first lens E1) in the second state at the telephoto end of the camera lens system to the imaging plane IMG on the optical axis is TLLn. The total focal length of the camera lens system in the first state at the telephoto end of the camera lens system is fLf, and the total focal length of the camera lens system in the second state at the telephoto end of the camera lens system is fLn. They satisfy the following condition: 10×(TLLn / fLn-TLLf / fLf)=0.28.

[0186] The focal length of the second lens E2 is f2, and the focal length of the fifth lens E5 is f5. They satisfy the following condition: f2 / f5 = 4.22.

[0187] The radius of curvature of the image-side surface of the third lens E3 is R6, and the thickness of the third lens E3 on the optical axis is CT3, which satisfies the following condition: R6 / CT3=-3.26.

[0188] The radius of curvature of the object-side surface of the fourth lens E4 is R7, and the thickness of the fourth lens E4 on the optical axis is CT4, which satisfies the following condition: R7 / CT4=3.17.

[0189] The displacement of the imaging plane IMG during the transition of the camera lens system from the first state at the short focal length end to the second state at the short focal length end is DImgS, which satisfies the following condition: DImgS = 0.165 mm.

[0190] The displacement of the imaging plane IMG during the transition of the camera lens system from the first state at the short focal length end to the second state at the short focal length end is DImgS. The minimum thickness of a single lens on the optical axis among all lenses in the camera lens system is CTmin, which satisfies the following condition: DImgS / CTmin = 0.27. In this embodiment, among the first lens E1 to the sixth lens E6, the thickness of the fifth lens E5 or the sixth lens E6 on the optical axis is less than the thickness of the other lenses on the optical axis. Therefore, CTmin is equal to the thickness of the fifth lens E5 or the sixth lens E6 on the optical axis.

[0191] Please refer to Tables 1A to 1C below.

[0192]

[0193] Table 1A contains detailed structural data for the first embodiment, where the units for radius of curvature, thickness, and focal length are millimeters (mm), and surfaces 0 to 21 sequentially represent the surfaces along the optical axis from the object side to the image side.

[0194]

[0195]

[0196] Table 1B contains parameters for the camera lens system under different focusing and zoom conditions: a first state at the short focal length end, a first state at the long focal length end, a second state at the short focal length end, and a second state at the long focal length end. It should be understood that this embodiment only discloses two focusing states, such as the first and second states, but this disclosure is not limited to the disclosed states. Furthermore, the camera lens system of this embodiment may have other focusing states with different focal lengths between the first and second states, corresponding to focusing states with different object distances.

[0197] As shown in Table 1B, the second lens group G2 moves relative to the first lens group G1 along the optical axis during the focusing and zooming processes.

[0198]

[0199]

[0200] Table 1C shows the aspherical data in the first embodiment, where k is the conical coefficient in the aspherical curve equation, and A4 to A28 represent the 4th to 28th order aspherical coefficients of each surface.

[0201] In addition, the tables in the following embodiments are schematic diagrams and aberration curves corresponding to each embodiment. The definitions of the data in the tables are the same as those in Tables 1A to 1C of the first embodiment, and will not be repeated here.

[0202] <Second Embodiment>

[0203] Please refer to Figures 4 to 6 ,in Figure 4 The diagram illustrates the imaging device according to the second embodiment of this disclosure in a first state at the short focal length end and a first state at the long focal length end. Figure 5 From left to right, the images show the spherical aberration, astigmatism, and distortion curves of the imaging device of the second embodiment in the first state at the short focal length end. Figure 6 From left to right, the images show the spherical aberration, astigmatism, and distortion curves of the imaging device of the second embodiment in the first state at the telephoto end. Figure 4 The upper part is a schematic diagram of the camera lens system in its first state at the short focal length end, while Figure 4 The lower half is a schematic diagram of the camera lens system in its first state at the telephoto end. Figure 4 It is known that the image capturing device 2 includes a camera lens system (unlabeled) and an electronic photosensitive element IS. The camera lens system, along the optical path from the object side to the image side, sequentially includes a reflective element LF, an aperture stop S1, a first lens E1, an aperture ST, a second lens E2, a third lens E3, an aperture stop S2, an aperture stop S3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. Furthermore, the camera lens system, along the optical path from the object side to the image side, has a first lens group G1 and a second lens group G2, wherein the first lens group G1 includes the first lens E1, the second lens E2, and the third lens E3, and the second lens group G2 includes the fourth lens E4, the fifth lens E5, and the sixth lens E6. The electronic photosensitive element IS is disposed on the imaging surface IMG. The camera lens system includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the lenses.

[0204] The imaging lens system has a first state corresponding to an infinity object distance and a second state corresponding to a finite object distance. The first state is the state of the imaging lens system when the subject is at infinity (infinity object distance), and the second state is the state of the imaging lens system when the subject is at a finite object distance (finite object distance). When the subject moves from infinity to a finite object distance, the imaging lens system performs a focusing process to change from the first state to the second state. Conversely, when the subject moves from a finite object distance to infinity, the imaging lens system also performs a focusing process to change from the second state to the first state. During the focusing process, the first lens group G1 does not move relative to the reflecting surface of the reflecting element LF, the second lens group G2 moves relative to the first lens group G1 along the optical axis, and the imaging plane IMG moves along the optical axis. It is worth noting that during the focusing process, the individual lenses in either lens group do not move relative to each other.

[0205] When the camera lens system is in the first state, it has a telephoto first state corresponding to the telephoto end and a short focal length first state corresponding to the short focal length end during zooming. Specifically, when the camera lens system transitions from the telephoto first state to the short focal length first state during zooming, the second lens group G2 moves relative to the first lens group G1 along the optical axis toward the image side. Conversely, when the camera lens system transitions from the short focal length first state to the telephoto first state during zooming, the second lens group G2 moves relative to the first lens group G1 along the optical axis toward the object side. For example... Figure 4 As shown, Figure 4 The upper part is the camera lens system in its first state at the short focal length end, while... Figure 4 The lower half represents the camera lens system in its first state at the telephoto end. Similarly, when the camera lens system is in its second state, it has both a telephoto end second state corresponding to the telephoto end and a short-focal-length end second state corresponding to the short-focal-length end during zooming. During zooming, the first lens group G1 does not move relative to the reflecting surface of the reflecting element LF, the second lens group G2 moves relative to the first lens group G1 along the optical axis, and the imaging plane IMG moves along the optical axis. It is noteworthy that during zooming, the individual lenses within either lens group do not move relative to each other.

[0206] The first lens E1 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, its image-side surface has a point of inflection off-axis, its object-side surface has a critical point off-axis, and its image-side surface has a critical point off-axis.

[0207] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its image-side surface has two inflection points off-axis and a critical point off-axis.

[0208] The third lens E3 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both of its surfaces are aspherical, and its object-side surface has two inflection points off-axis.

[0209] The fourth lens E4 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both of its surfaces are aspherical. Its object-side surface has one inflection point off-axis, its image-side surface has three inflection points off-axis, and its image-side surface has two critical points off-axis.

[0210] The fifth lens E5 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has three inflection points off-axis, its image-side surface has one inflection point off-axis, its object-side surface has one critical point off-axis, and its image-side surface has one critical point off-axis.

[0211] The sixth lens E6 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has one inflection point off-axis, its image-side surface has two inflection points off-axis, and its object-side surface has a critical point off-axis.

[0212] The reflective element LF is made of glass and is positioned between the object and the first lens group G1 (or, more specifically, on the object side of the first lens E1), without affecting the focal length of the imaging lens system. The reflective element LF is a prism, serving as a light path deflector. For ease of explanation, Figure 4 The deflection effect of the reflective element LF on the optical path is omitted from the drawing. Both the object-side and image-side surfaces of the reflective element LF are planar, but this is not a limitation. The reflective element LF can have various forms depending on actual design requirements, thus causing different deflection effects on the optical path. For example, the reflective element LF can be as follows: Figures 18 to 20 As shown, it provides one optical path reversal. The reflective element LF uses the reflective surface RF1 to revert the optical axis OA1 to the optical axis OA2, as can be seen from the previous description. Figures 18 to 20 The relevant explanations will not be repeated here.

[0213] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging surface IMG. It does not affect the focal length of the camera lens system.

[0214] In the camera lens system of the second embodiment, the lens with the maximum thickness on the optical axis is the third lens E3.

[0215] Please refer to Tables 2A to 2D below.

[0216]

[0217]

[0218]

[0219] The definitions described in Table 2B are the same as those in the first embodiment. Furthermore, in addition to the first and second states, the camera lens system of this embodiment can also have other focusing states with different focal lengths between the first and second states, corresponding to focusing states with different object distances.

[0220] As shown in Table 2B, the second lens group G2 moves relative to the first lens group G1 along the optical axis during the focusing and zooming processes.

[0221]

[0222]

[0223] The equations for the aspherical curves in Table 2C are represented in the form of the first embodiment.

[0224]

[0225]

[0226] The definitions described in Table 2D are the same as those in the first embodiment.

[0227] <Third Embodiment>

[0228] Please refer to Figures 7 to 9 ,in Figure 7 The diagram illustrates the imaging device according to the third embodiment of this disclosure in a first state at the short focal length end and a first state at the long focal length end. Figure 8 From left to right, the images show the spherical aberration, astigmatism, and distortion curves of the imaging device of the third embodiment in the first state at the short focal length end. Figure 9 From left to right, the images show the spherical aberration, astigmatism, and distortion curves of the imaging device of the third embodiment in its first state at the telephoto end. Figure 7 The upper part is a schematic diagram of the camera lens system in its first state at the short focal length end, while Figure 7The lower half is a schematic diagram of the camera lens system in its first state at the telephoto end. Figure 7 It is known that the image capturing device 3 includes a camera lens system (unlabeled) and an electronic photosensitive element IS. The camera lens system, along the optical path from the object side to the image side, sequentially includes a reflective element LF, an aperture stop S1, a first lens E1, a second lens E2, a third lens E3, an aperture ST, an aperture stop S2, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. Furthermore, the camera lens system, along the optical path from the object side to the image side, has a first lens group G1 and a second lens group G2, wherein the first lens group G1 includes the first lens E1, the second lens E2, and the third lens E3, and the second lens group G2 includes the fourth lens E4, the fifth lens E5, and the sixth lens E6. The electronic photosensitive element IS is disposed on the imaging surface IMG. The camera lens system includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between each lens.

[0229] The imaging lens system has a first state corresponding to an infinity object distance and a second state corresponding to a finite object distance. The first state is the state of the imaging lens system when the subject is at infinity (infinity object distance), and the second state is the state of the imaging lens system when the subject is at a finite object distance (finite object distance). When the subject moves from infinity to a finite object distance, the imaging lens system performs a focusing process to change from the first state to the second state. Conversely, when the subject moves from a finite object distance to infinity, the imaging lens system also performs a focusing process to change from the second state to the first state. During the focusing process, the first lens group G1 does not move relative to the reflecting surface of the reflecting element LF, the second lens group G2 moves relative to the first lens group G1 along the optical axis, and the imaging plane IMG moves along the optical axis. It is worth noting that during the focusing process, the individual lenses in either lens group do not move relative to each other.

[0230] When the camera lens system is in the first state, it has a telephoto first state corresponding to the telephoto end and a short focal length first state corresponding to the short focal length end during zooming. Specifically, when the camera lens system transitions from the telephoto first state to the short focal length first state during zooming, the second lens group G2 moves relative to the first lens group G1 along the optical axis toward the image side. Conversely, when the camera lens system transitions from the short focal length first state to the telephoto first state during zooming, the second lens group G2 moves relative to the first lens group G1 along the optical axis toward the object side. For example... Figure 7 As shown, Figure 7 The upper part is the camera lens system in its first state at the short focal length end, while... Figure 7The lower half represents the camera lens system in its first state at the telephoto end. Similarly, when the camera lens system is in its second state, it has both a telephoto end second state corresponding to the telephoto end and a short-focal-length end second state corresponding to the short-focal-length end during zooming. During zooming, the first lens group G1 does not move relative to the reflecting surface of the reflecting element LF, the second lens group G2 moves relative to the first lens group G1 along the optical axis, and the imaging plane IMG moves along the optical axis. It is noteworthy that during zooming, the individual lenses within either lens group do not move relative to each other.

[0231] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has two inflection points off-axis. Its object-side surface has two critical points off-axis, and its image-side surface has two critical points off-axis.

[0232] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both of its surfaces are aspherical. Its object-side surface has two inflection points off-axis, its image-side surface has two inflection points off-axis, and its image-side surface has two critical points off-axis.

[0233] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, its image-side surface has a point of inflection off-axis, and its object-side surface has a critical point off-axis.

[0234] The fourth lens E4 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, its image-side surface has a point of inflection off-axis, its object-side surface has a critical point off-axis, and its image-side surface has a critical point off-axis.

[0235] The fifth lens E5 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both of its surfaces are aspherical. Its object-side surface has three inflection points off-axis, and its image-side surface also has three inflection points off-axis.

[0236] The sixth lens E6 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, its image-side surface has two inflection points off-axis, and its object-side surface has a critical point off-axis.

[0237] The reflective element LF is made of glass and is positioned between the object and the first lens group G1 (or, more specifically, on the object side of the first lens E1), without affecting the focal length of the imaging lens system. The reflective element LF is a prism, serving as a light path deflector. For ease of explanation, Figure 7 The deflection effect of the reflective element LF on the optical path is omitted from the drawing. Both the object-side and image-side surfaces of the reflective element LF are planar, but this is not a limitation. The reflective element LF can have various forms depending on actual design requirements, thus causing different deflection effects on the optical path. For example, the reflective element LF can be as follows: Figures 18 to 20 As shown, it provides one optical path reversal. The reflective element LF uses the reflective surface RF1 to revert the optical axis OA1 to the optical axis OA2, as can be seen from the previous description. Figures 18 to 20 The relevant explanations will not be repeated here.

[0238] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging surface IMG. It does not affect the focal length of the camera lens system.

[0239] In the camera lens system of the third embodiment, the lens with the maximum thickness on the optical axis is the third lens E3.

[0240] Please refer to Tables 3A to 3D below.

[0241]

[0242]

[0243]

[0244] The definitions in Table 3B are the same as in the first embodiment, except that D1 is the distance on the optical axis between aperture ST and stop S2. Furthermore, the camera lens system of this embodiment can have other focusing states with different focal lengths between the first and second states, in addition to the first and second states, to correspond to focusing states with different object distances.

[0245] As shown in Table 3B, the second lens group G2 moves relative to the first lens group G1 along the optical axis during the focusing and zooming processes.

[0246]

[0247]

[0248] The equations for the aspherical surfaces in Table 3C are expressed in the form of the first embodiment.

[0249]

[0250] The definitions described in Table 3D are the same as those in the first embodiment.

[0251] <Fourth Embodiment>

[0252] Please refer to Figure 10 This is a perspective view illustrating an image-capturing device according to a fourth embodiment of the present disclosure. In this embodiment, the image-capturing device 100 is a camera module. The image-capturing device 100 includes an imaging lens 101, a driving device 102, an electronic photosensitive element 103, and an image stabilization module 104. The imaging lens 101 includes the imaging lens system of the first embodiment described above, a lens barrel (not otherwise labeled) for supporting the imaging lens system, and a support device (Holder Member, not otherwise labeled). The imaging lens 101 can also be replaced with the imaging lens system of other embodiments described above, and the present disclosure is not limited thereto. The image-capturing device 100 uses the imaging lens 101 to focus light to generate an image, and cooperates with the driving device 102 to focus the image, finally imaging it on the electronic photosensitive element 103 and outputting it as image data.

[0253] The driving device 102 may have an auto-focus function, and its driving method can use a driving system such as a voice coil motor (VCM), microelectromechanical systems (MEMS), piezoelectric systems, and shape memory alloys. The driving device 102 may include a guiding element, which may include a ball-type structure or a cylindrical structure. The guiding element helps to reduce the resistance of the moving lens group during zooming or focusing. The driving device 102 allows the imaging lens 101 to achieve a better imaging position, enabling clear images of the subject at different object distances. In addition, the image capturing device 100 is equipped with a high-sensitivity and low-noise electronic image sensor 103 (such as CMOS or CCD) located on the imaging surface of the imaging lens system, which can truly present the good image quality of the imaging lens system. The electronic photosensitive element 103 can also be moved in three dimensions relative to the base, and focusing can be achieved by moving the electronic photosensitive element 103.

[0254] The image stabilization module 104 may be, for example, an accelerometer, a gyroscope, or a Hall effect sensor. The drive unit 102 may work in conjunction with the image stabilization module 104 to form an optical image stabilization (OIS) device. By adjusting the changes in different axes of the imaging lens 101, it can compensate for the blurry image caused by shaking during shooting, or use image compensation technology in the imaging software to provide electronic image stabilization (EIS), further improving the image quality of shooting in dynamic and low-light scenes.

[0255] <Fifth Embodiment>

[0256] Please refer to Figures 11 to 12 ,in Figure 11 A perspective view of one side of an electronic device according to a fifth embodiment of this disclosure is shown, and Figure 12 Draw Figure 11 A three-dimensional diagram of the other side of the electronic device.

[0257] In this embodiment, the electronic device 200 is a smartphone. The electronic device 200 includes image-capturing devices 100, 100a, 100b, and 100c, as well as a display module 201, according to the fourth embodiment. Figure 11 As shown, image capturing devices 100, 100a, and 100b are all disposed on the same side of the electronic device 200. Figure 12 As shown, the image capturing device 100c and the display module 201 are both disposed on the other side of the electronic device 200. The image capturing device 100c can serve as a front-facing lens to provide a selfie function, but this disclosure is not limited thereto. Furthermore, the image capturing devices 100a, 100b, and 100c can all include the camera lens system disclosed herein and can all have a structural configuration similar to that of the image capturing device 100. In detail, each of the image capturing devices 100a, 100b, and 100c can include an imaging lens, a driving device, an electronic photosensitive element, and an image stabilization module, and each can include a reflective element as a component for deflecting the light path. The imaging lens of each of the image capturing devices 100a, 100b, and 100c can include, for example, an optical lens group of the camera lens system disclosed herein, a lens barrel for supporting the optical lens group, and a support device.

[0258] Image capturing device 100 is a telephoto image capturing device, image capturing device 100a is a wide-angle image capturing device, image capturing device 100b is an ultra-wide-angle image capturing device, and image capturing device 100c is a wide-angle image capturing device. In this embodiment, image capturing devices 100, 100a, and 100b have different viewing angles, allowing the electronic device 200 to provide different magnifications to achieve optical zoom shooting effects. Specifically, half of the maximum viewing angle in image capturing device 100 falls within the range of 3 to 35 degrees, while half of the maximum viewing angle in image capturing device 100a falls within the range of 35 to 70 degrees. This allows the electronic device 200 to have a greater zoom ratio, expanding its application range. Furthermore, as... Figure 12 As shown, the opening of the image capturing device 100c can be non-circular, and the lens barrel or lens inside the image capturing device 100c can have a chamfered edge at its outer diameter to accommodate the non-circular opening. This allows for a further reduction in the single-axis length of the image capturing device 100c, which helps to reduce the lens volume, increase the area ratio of the display module 201 relative to the electronic device 200, and reduce the thickness of the electronic device 200, further achieving module miniaturization. The aforementioned electronic device 200 is exemplified by including multiple image capturing devices 100, 100a, 100b, and 100c, but the number and configuration of the image capturing devices are not intended to limit this disclosure.

[0259] <Sixth Embodiment>

[0260] Please refer to Figures 13 to 15 ,in Figure 13 A perspective view of one side of an electronic device according to the sixth embodiment of this disclosure is shown. Figure 14 Draw Figure 13 A three-dimensional diagram of the other side of the electronic device, and Figure 15 Draw Figure 13 System block diagram of an electronic device.

[0261] In this embodiment, the electronic device 300 is a smartphone. The electronic device 300 includes, according to the fourth embodiment, image capturing devices 100, 100d, 100e, 100f, 100g, and 100h, a flash module 301, a focus assist module 302, an image signal processor 303, a display module 304, and an image software processor 305. Image capturing devices 100, 100d, and 100e are all located on the same side of the electronic device 300. The focus assist module 302 may employ a laser rangefinder or a Time-of-Flight (ToF) module, but this disclosure is not limited thereto. Image capturing devices 100f, 100g, 100h, and display module 304 are all located on the other side of electronic device 300. Display module 304 can serve as a user interface, allowing image capturing devices 100f, 100g, and 100h to function as front-facing lenses for selfies; however, this disclosure is not limited to this. Furthermore, image capturing devices 100d, 100e, 100f, 100g, and 100h can all include the camera lens system disclosed herein and can all have a structural configuration similar to that of image capturing device 100. Specifically, each of image capturing devices 100d, 100e, 100f, 100g, and 100h can include an imaging lens, a driving device, an electronic photosensitive element, and an image stabilization module, and each can include a reflective element as a component for deflecting the light path. The imaging lenses of imaging devices 100d, 100e, 100f, 100g, and 100h may each include, for example, an optical lens group of the camera lens system disclosed herein, a lens barrel for carrying the optical lens group, and a support device.

[0262] Image capturing device 100 is a telephoto image capturing device, image capturing device 100d is a wide-angle image capturing device, image capturing device 100e is an ultra-wide-angle image capturing device, image capturing device 100f is a wide-angle image capturing device, image capturing device 100g is an ultra-wide-angle image capturing device, and image capturing device 100h is a time-of-flight ranging image capturing device. In this embodiment, image capturing devices 100, 100d, and 100e have different viewing angles, allowing the electronic device 300 to provide different magnifications to achieve optical zoom shooting effects. Specifically, half of the maximum viewing angle in image capturing device 100 falls within the range of 3 to 35 degrees, while half of the maximum viewing angle in image capturing device 100d falls within the range of 35 to 70 degrees. This allows the electronic device 300 to have a greater zoom ratio, expanding its application range. Furthermore, the image-capturing device 100 is a telescopic image-capturing device configured with an optical path deflection element, such as a reflective element, so that the overall length of the image-capturing device 100 is not limited by the thickness of the electronic device 300. The optical path deflection element configuration of the image-capturing device 100, such as a reflective element, can, for example, have a similar... Figures 18 to 22 The structure can be referred to the aforementioned corresponding structure. Figures 18 to 22 The explanation will not be repeated here. In addition, the imaging device 100h can acquire the depth information of the image. The above-described electronic device 300 is an example that includes multiple imaging devices 100, 100d, 100e, 100f, 100g, and 100h, but the number and configuration of the imaging devices are not intended to limit this disclosure.

[0263] When the user photographs the subject 306, the electronic device 300 uses the image capturing device 100, image capturing device 100d, or image capturing device 100e to focus the light and activates the flash module 301 for supplemental lighting. It then uses the subject distance information provided by the focus assist module 302 for rapid focusing. The image signal processor 303 further optimizes the image to improve the image quality produced by the camera lens system. The focus assist module 302 can use an infrared or laser focus assist system to achieve rapid focusing. Alternatively, the electronic device 300 can also use the image capturing device 100f, image capturing device 100g, or image capturing device 100h for shooting. The display module 304 can use a touchscreen to perform image capturing and processing in conjunction with the diverse functions of the image software processor 305 (or it can use a physical shooting button). The image processed by the image software processor 305 can be displayed on the display module 304.

[0264] <Seventh Embodiment>

[0265] Please refer to Figure 16 This is a perspective view illustrating one side of an electronic device according to the seventh embodiment of this disclosure.

[0266] In this embodiment, the electronic device 400 is a smartphone. The electronic device 400 includes, according to the fourth embodiment, image capturing devices 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r, a flash module 401, a focus assist module, an image signal processor, a display module, and an image software processor (not shown). Image capturing devices 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r are all located on the same side of the electronic device 400, while the display module is located on the other side of the electronic device 400. Furthermore, the image capturing devices 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r may all include the camera lens system disclosed herein and may all have a structural configuration similar to that of the image capturing device 100, which will not be described in detail here.

[0267] Image capturing device 100 is a telephoto image capturing device, image capturing device 100i is a telephoto image capturing device, image capturing device 100j is a wide-angle image capturing device, image capturing device 100k is a wide-angle image capturing device, image capturing device 100m is an ultra-wide-angle image capturing device, image capturing device 100n is an ultra-wide-angle image capturing device, image capturing device 100p is a telephoto image capturing device, image capturing device 100q is a telephoto image capturing device, and image capturing device 100r is a time-of-flight ranging image capturing device. In this embodiment, image capturing devices 100, 100i, 100j, 100k, 100m, 100n, 100p, and 100q have different viewing angles, allowing the electronic device 400 to provide different magnifications to achieve an optical zoom shooting effect. In image capturing device 100, half of the maximum viewing angle falls within the range of 3 to 35 degrees, while in image capturing device 100j, half of the maximum viewing angle falls within the range of 35 to 70 degrees. This allows the electronic device 400 to have a greater zoom ratio, expanding its application range. Furthermore, image capturing devices 100 and 100i are telescopic image capturing devices configured with optical path deflection elements, such as reflective elements. The optical path deflection element configuration of image capturing devices 100 and 100i can, for example, have similar... Figures 18 to 22 The structure can be referred to the aforementioned corresponding structure. Figures 18 to 22The description of the image acquisition device 100r will not be repeated here. Additionally, the image acquisition device 100r can acquire depth information of the image. The electronic device 400 described above is exemplified by including multiple image acquisition devices 100, 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r, but the number and configuration of the image acquisition devices are not intended to limit this disclosure. When a user photographs a subject, the electronic device 400 uses image acquisition devices 100, 100i, 100j, 100k, 100m, 100n, 100p, 100q, or 100r to focus light and capture an image, activates the flash module 401 for supplemental lighting, and performs subsequent processing in a manner similar to the aforementioned embodiments, which will not be repeated here.

[0268] The image capturing device disclosed herein is not limited to smartphones. It can also be applied to mobile focusing systems as needed, offering excellent aberration correction and good image quality. For example, the image capturing device can be used in a wide range of electronic devices, including 3D image capture, digital cameras, mobile devices, tablets, smart TVs, network monitoring equipment, dashcams, reversing cameras, multi-lens systems, recognition systems, motion-sensing game consoles, and wearable devices. The aforementioned electronic devices are merely illustrative examples of practical applications of this disclosure and do not limit the scope of application of the image capturing device disclosed herein.

[0269] Although this disclosure is presented above with reference to the preferred embodiments described above, it is not intended to limit this disclosure. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of this disclosure. Therefore, the scope of patent protection of this disclosure shall be determined by the claims appended to this specification.

Claims

1. A camera lens system, characterized in that, It includes two groups of lens groups. The two groups of lens groups are, in order from an object side to an image side along an optical path, a first lens group and a second lens group. All the lenses of the two groups of lens groups respectively have an object side surface facing the object side direction and an image side surface facing the image side direction, and the total number of lens groups of the imaging lens system is two groups; Among them, the imaging lens system has a first state corresponding to an infinite object distance; Among them, the imaging lens system in the first state has a first long focal length state corresponding to a long focal end and a first short focal length state corresponding to a short focal end during a zooming process, and at least one of the two groups of lens groups moves along the optical axis direction during the zooming process; Among them, at least one of the object side surface and the image side surface of at least one lens in the two groups of lens groups has at least one inflection point at an off-axis position; Among them, the imaging lens system sequentially includes a first lens, a second lens, a third lens, and a fourth lens from the object side to the image side along the optical path, and the lens with the largest thickness on the optical axis in the imaging lens system is the third lens or the fourth lens; Among them, the total focal length of the imaging lens system in the first long focal length state is fLf, the total focal length of the imaging lens system in the first short focal length state is fSf, the focal length of the first lens group is fG1, the focal length of the second lens group is fG2, the radius of curvature of the image side surface of the third lens is R6, and the radius of curvature of the object side surface of the fourth lens is R7, which satisfy the following conditions: 1.20 < fLf / fSf < 2.00; -0.80 < fG1 / fG2 < -0.20; and -2.00 < R6 / R7 < -0.

65.

2. The camera lens system according to claim 1, characterized in that, Half of the maximum viewing angle of the imaging lens system in the first short focal length state is HFOVSf, and half of the maximum viewing angle of the imaging lens system in the first long focal length state is HFOVLf, which satisfy the following conditions: 1.20 < HFOVSf / HFOVLf < 2.

50.

3. The camera lens system according to claim 1, characterized in that, The distance on the optical axis from the object side surface of the lens closest to the object side in the first short focal length state of the imaging lens system to the image side surface of the lens closest to the image side is TDSf, the distance on the optical axis from the object side surface of the lens closest to the object side in the first long focal length state of the imaging lens system to the image side surface of the lens closest to the image side is TDLf, and the distance on the optical axis from the object side surface of the lens closest to the object side in the first short focal length state of the imaging lens system to an imaging surface is TLSf, which satisfy the following conditions: 0.20 < (TDSf - TDLf) / TLSf < 0.

70.

4. The camera lens system according to claim 1, characterized in that, The distance on the optical axis from the object side surface of the lens closest to the object side in the first short focal length state of the imaging lens system to an imaging surface is TLSf, and the distance on the optical axis from the object side surface of the lens closest to the object side in the first long focal length state of the imaging lens system to the imaging surface is TLLf, which satisfy the following conditions: 0.00 ≤ 10×|TLSf - TLLf| / TLSf < 1.

00.

5. The camera lens system according to claim 1, characterized in that, The aperture value of the imaging lens system in the first state at the short focal end is FnoSf, and the aperture value of the imaging lens system in the first state at the long focal end is FnoLf, which satisfy the following conditions: 1.50 < FnoSf < 4.00; and 1.80 < FnoLf < 4.

50.

6. The camera lens system according to claim 1, characterized in that, The imaging lens system includes six lenses. The six lenses are, in order from the object side to the image side along the optical path, the first lens, the second lens, the third lens, the fourth lens, a fifth lens, and a sixth lens. The first lens group includes the first lens, the second lens, and the third lens. The second lens group includes the fourth lens, the fifth lens, and the sixth lens. The second lens group moves along the optical axis direction during the zooming process, and there is no relative movement between the lenses in either the first lens group or the second lens group during the zooming process.

7. The camera lens system according to claim 6, characterized in that, The third lens has a positive refractive power, the sixth lens has a negative refractive power. The image-side surface of the sixth lens is concave near the optical axis, and the image-side surface of the sixth lens has at least one inflection point off the axis.

8. The camera lens system according to claim 6, characterized in that, The focal length of the second lens is f2, and the focal length of the fifth lens is f5, which satisfy the following conditions: 0.00 < f2 / f5 < 5.

00.

9. The camera lens system according to claim 6, characterized in that, The distance from the object-side surface of the lens closest to the object side of the imaging lens system in the first state at the short focal end to the imaging surface on the optical axis is TLSf. The distance from the object-side surface of the lens closest to the object side of the imaging lens system in the first state at the long focal end to the imaging surface on the optical axis is TLLf. The maximum imaging height of the imaging lens system is ImgH, which satisfy the following conditions: 3.50 < TLSf / ImgH < 7.50; and 3.50 < TLLf / ImgH < 7.

50.

10. The camera lens system according to claim 1, characterized in that, It further includes a reflection element, where the reflection element has at least one reflection surface. The reflection element is located between an object and the first lens group, and the first lens group has no relative movement with respect to the at least one reflection surface during the zooming process.

11. An image capturing device, characterized in that, Comprises: The imaging lens system according to claim 1; and An electronic photosensitive element disposed on an imaging surface of the imaging lens system.

12. An electronic device, characterized in that, Comprises: A first imaging device, including the imaging device according to claim 11, where half of the maximum viewing angle in the first imaging device falls within the range of 3 degrees to 35 degrees; and A second imaging device, on the same side of the electronic device as the first imaging device, where half of the maximum viewing angle in the second imaging device falls within the range of 35 degrees to 70 degrees.

13. A camera lens system, characterized in that, It includes two lens groups. The two lens groups are, in order from the object side to the image side along the optical path, the first lens group and the second lens group. All the lenses of the two lens groups respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction, and the total number of lens groups of the imaging lens system is two; Among them, the imaging lens system has a first state corresponding to an infinite object distance; Among them, in the first state of the imaging lens system, during a zooming process, it has a first long focal length state corresponding to the long focal length end and a first short focal length state corresponding to the short focal length end, and at least one of the two lens groups moves along the optical axis direction during the zooming process; Among them, at least one of the object side surface and the image side surface of at least one lens in the two lens groups has at least one inflection point at an off-axis position; Among them, the lens with the maximum thickness on the optical axis in the imaging lens system is the lens closest to the image side among the first lens group or the lens closest to the object side among the second lens group; Among them, the total focal length of the imaging lens system in the first long focal length state is fLf, the total focal length of the imaging lens system in the first short focal length state is fSf, the focal length of the first lens group is fG1, the focal length of the second lens group is fG2, half of the maximum viewing angle of the imaging lens system in the first short focal length state is HFOVSf, the radius of curvature of the image side surface of the lens closest to the image side in the first lens group of the imaging lens system is RG1i, the radius of curvature of the object side surface of the lens closest to the object side in the second lens group of the imaging lens system is RG2o, and they satisfy the following conditions: 1.20 < fLf / fSf < 2.00; -0.80 < fG1 / fG2 < -0.20; 3.00 degrees < HFOVSf < 35.00 degrees; and -2.00 < RG1i / RG2o < -0.

65.

14. The camera lens system according to claim 13, characterized in that, [[ID=V9]]The distance from the object side surface of the lens closest to the object side in the first short focal length state of the imaging lens system to the imaging surface on the optical axis is TLSf, and the distance from the object side surface of the lens closest to the object side in the first long focal length state of the imaging lens system to the imaging surface on the optical axis is TLLf, and they satisfy the following conditions: 0.00 ≤ 10×|TLSf - TLLf| / TLSf < 1.

00.

15. The camera lens system according to claim 13, characterized in that, The imaging lens system sequentially includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens along the optical path from the object side to the image side; Among them, the distance from the object side surface of the lens closest to the object side in the first lens group to the image side surface of the lens closest to the image side in the first lens group on the optical axis is TG1, the distance from the object side surface of the lens closest to the object side in the second lens group to the image side surface of the lens closest to the image side in the second lens group on the optical axis is TG2, the focal length of the second lens is f2, and the focal length of the fifth lens is f5, and they satisfy the following conditions: 0.50 < TG1 / TG2 < 4.50; and 0.00 < f2 / f5 < 5.

00.

16. The camera lens system according to claim 13, characterized in that, The imaging lens system includes six lenses, and the six lenses are sequentially a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens along the optical path from the object side to the image side.

17. The camera lens system according to claim 16, characterized in that, The first lens group includes the first lens, the second lens, and the third lens. The second lens group includes the fourth lens, the fifth lens, and the sixth lens. The second lens group moves along the optical axis direction during the zooming process, and there is no relative movement between the lenses in either the first lens group or the second lens group during the zooming process.

18. The camera lens system according to claim 16, characterized in that, The lens closest to the image side in the first lens group has positive refractive power, the third lens has positive refractive power, the sixth lens has negative refractive power, the image-side surface of the sixth lens is concave near the optical axis, and the image-side surface of the sixth lens has at least one inflection point off the axis.

19. The camera lens system according to claim 16, characterized in that, The distance from the object-side surface of the lens closest to the object side in the first state at the short focal end of the imaging lens system to the imaging surface on the optical axis is TLSf. The distance from the object-side surface of the lens closest to the object side in the first state at the long focal end of the imaging lens system to the imaging surface on the optical axis is TLLf. The maximum imaging height of the imaging lens system is ImgH, and the following conditions are satisfied: 3.50 < TLSf / ImgH < 7.50; and 3.50 < TLLf / ImgH < 7.

50.

20. The camera lens system according to claim 13, characterized in that, It further includes a reflection element, where the reflection element has at least one reflection surface. The reflection element is located between an object and the first lens group, and the first lens group has no relative movement with respect to the at least one reflection surface during the zooming process.

21. A camera lens system, characterized in that, It includes two lens groups. The two lens groups are, in order from the object side to the image side along the optical path, the first lens group and the second lens group. All the lenses of the two lens groups respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction, and the total number of lens groups of the imaging lens system is two; where the imaging lens system has a first state corresponding to an infinite object distance and a second state corresponding to a finite object distance; where when an object moves from an infinite object distance to a finite object distance, the imaging lens system undergoes a focusing process to change from the first state to the second state; where the imaging lens system in the first state has a first state at the long focal end corresponding to the long focal end and a first state at the short focal end corresponding to the short focal end during a zooming process, and at least one of the two lens groups moves along the optical axis direction during the zooming process; where at least one of the object-side surface and the image-side surface of at least one lens in the two lens groups has at least one inflection point off the axis; where the imaging lens system sequentially includes a first lens, a second lens, a third lens, and a fourth lens along the optical path from the object side to the image side, and the lens with the maximum thickness on the optical axis in the imaging lens system is the third lens or the fourth lens; Among them, the total focal length of the imaging lens system in the first long focal length state is fLf, the total focal length of the imaging lens system in the first short focal length state is fSf, the focal length of the first lens group is fG1, the focal length of the second lens group is fG2, the radius of curvature of the image-side surface of the third lens is R6, and the radius of curvature of the object-side surface of the fourth lens is R7, which satisfy the following conditions: 1.20 < fLf / fSf < 2.00; -0.80 < fG1 / fG2 < -0.20; and -2.00 < R6 / R7 < -0.

65.

22. The camera lens system according to claim 21, characterized in that, The distance on the optical axis from the object-side surface of the lens closest to the object side in the first short focal length state of the imaging lens system to the image-side surface of the lens closest to the image side is TDSf, the distance on the optical axis from the object-side surface of the lens closest to the object side in the first long focal length state of the imaging lens system to the image-side surface of the lens closest to the image side is TDLf, and the distance on the optical axis from the object-side surface of the lens closest to the object side in the first short focal length state of the imaging lens system to an imaging surface is TLSf, which satisfy the following conditions: 0.20 < (TDSf - TDLf) / TLSf < 0.

70.

23. The camera lens system according to claim 21, characterized in that, The distance on the optical axis from the object-side surface of the lens closest to the object side in the first short focal length state of the imaging lens system to an imaging surface is TLSf, and the distance on the optical axis from the object-side surface of the lens closest to the object side in the first long focal length state of the imaging lens system to the imaging surface is TLLf, which satisfy the following conditions: 0.00 ≤ 10×|TLSf - TLLf| / TLSf < 1.

00.

24. The camera lens system according to claim 21, characterized in that, The imaging lens system in the second state has a second long focal length state corresponding to the long focal length end and a second short focal length state corresponding to the short focal length end during the zooming process. The aperture value of the imaging lens system in the first short focal length state is FnoSf, the aperture value of the imaging lens system in the second short focal length state is FnoSn, the aperture value of the imaging lens system in the first long focal length state is FnoLf, and the aperture value of the imaging lens system in the second long focal length state is FnoLn, which satisfy the following conditions: 0.01 < 10×|FnoSn - FnoSf| < 1.00; and 0.01 < 10×|FnoLn - FnoLf| < 1.

00.

25. The camera lens system according to claim 21, characterized in that, In the zooming process, the imaging lens system in the second state has a long focal length end second state corresponding to the long focal length end and a short focal length end second state corresponding to the short focal length end. The distance from the object side surface of the lens closest to the object side in the short focal length end first state of the imaging lens system to an imaging plane on the optical axis is TLSf. The distance from the object side surface of the lens closest to the object side in the short focal length end second state of the imaging lens system to the imaging plane on the optical axis is TLSn. The distance from the object side surface of the lens closest to the object side in the long focal length end first state of the imaging lens system to the imaging plane on the optical axis is TLLf. The distance from the object side surface of the lens closest to the object side in the long focal length end second state of the imaging lens system to the imaging plane on the optical axis is TLLn. The total focal length of the imaging lens system in the short focal length end first state is fSf. The total focal length of the imaging lens system in the short focal length end second state is fSn. The total focal length of the imaging lens system in the long focal length end first state is fLf. The total focal length of the imaging lens system in the long focal length end second state is fLn, and they satisfy the following conditions: 0.10 < 10×(TLSn / fSn - TLSf / fSf) < 0.80; and 0.10 < 10×(TLLn / fLn - TLLf / fLf) < 0.

80.

26. The camera lens system according to claim 21, characterized in that, The imaging lens system includes six lenses. The six lenses are, in order from the object side to the image side along the optical path, the first lens, the second lens, the third lens, the fourth lens, a fifth lens, and a sixth lens. The first lens group includes the first lens, the second lens, and the third lens, and the second lens group includes the fourth lens, the fifth lens, and the sixth lens.

27. The camera lens system according to claim 26, characterized in that, The radius of curvature of the image side surface of the third lens is R6, the radius of curvature of the object side surface of the fourth lens is R7, the thickness of the third lens on the optical axis is CT3, and the thickness of the fourth lens on the optical axis is CT4, and they satisfy the following conditions: -10.00 < R6 / CT3 < 0.00; and 0.00 < R7 / CT4 < 10.

00.

28. The camera lens system according to claim 26, characterized in that, In the zooming process, the imaging lens system in the second state has a long focal length end second state corresponding to the long focal length end and a short focal length end second state corresponding to the short focal length end. An imaging plane of the imaging lens system moves along the optical axis direction during the zooming process or the focusing process. The displacement amount of the imaging plane during the process of the imaging lens system changing from the short focal length end first state to the short focal length end second state is DImgS, and it satisfies the following conditions: 0.050 mm < DImgS < 0.800 mm.

29. The camera lens system according to claim 26, characterized in that, In the second state, the camera lens system has a telephoto end second state corresponding to the telephoto end and a short focal length end second state corresponding to the short focal length end during the zooming process. An imaging surface of the camera lens system moves along the optical axis during the zooming or focusing process. The displacement of the imaging surface during the transition of the camera lens system from the short focal length end first state to the short focal length end second state is DImgS. The minimum thickness of a single lens along the optical axis among all lenses in the camera lens system is CTmin, which satisfies the following condition: 0.10 <DImgS / CTmin<1.50。 30. The camera lens system according to claim 21, characterized in that, The total focal length of the camera lens system in the first state at the telephoto end is fLf, the total focal length of the camera lens system in the first state at the short focal end is fSf, the focal length of the first lens group is fG1, the focal length of the second lens group is fG2, the radius of curvature of the image-side surface of the third lens is R6, the radius of curvature of the object-side surface of the fourth lens is R7, the radius of curvature of the image-side surface of the lens closest to the image side in the first lens group of the camera lens system is RG1i, the radius of curvature of the object-side surface of the lens closest to the object side in the second lens group of the camera lens system is RG2o, and half of the maximum angle of view of the camera lens system in the first state at the short focal end is HFOVSf, which satisfies the following condition: 1.33≤fLf / fSf≤1.34; -0.51≤fG1 / fG2≤-0.47; -1.22≤R6 / R7≤-0.76; -1.22≤RG1i / RG2o≤-0.76; and 14.67 degrees ≤ HFOVSf ≤ 17.09 degrees.

Images