Optical assembly and electronic device

Abstract

The invention discloses an optical assembly and electronic equipment, and relates to the field of electronic equipment. An optical assembly comprises a first reflecting part, a second reflecting part, a lens module, a light filtering element and a light sensing element. The first reflecting part is provided with a first light inlet surface and a first light outlet surface, the first light inlet surface is used for receiving light rays, the first light outlet surface is arranged opposite to the lens module, and the first light inlet surface has first focal power; the second reflecting part is provided with a second light incident surface and a second light emergent surface, the second light incident surface is arranged opposite to the lens module, the second light emergent surface is arranged opposite to the light filtering element and the light sensing element in sequence, and the second light incident surface has second focal power. The problem that an optical system in the prior art is large in size can be solved.

Description

Technical Field

[0001] This application belongs to the technical field of electronic devices, specifically relating to an optical component and an electronic device. Background Technology

[0002] With the widespread use of electronic devices (such as smartphones), photography functions have become increasingly important, gradually becoming a key factor for consumers when choosing a device. Telephoto lenses, as one of the most frequently used functions in photography, have become an essential feature of electronic device cameras. Currently, most mid-to-high-end flagship phones on the market are equipped with telephoto lenses, with varying specifications and architectures. To achieve better shooting results, the telephoto lenses in flagship phones often feature larger sensors and longer focal lengths to capture clearer images from farther distances. However, this approach results in a larger optical system size. Summary of the Invention

[0003] The purpose of this application is to provide an optical component and electronic device that can solve the problem of large size of optical systems in related technologies.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows:

[0005] This application provides an optical component, including: a first reflector, a second reflector, a lens module, a filter element, and a photosensitive element;

[0006] The first reflector has a first light-incident surface and a first light-outceasing surface. The first light-incident surface is used to receive light, and the first light-outceasing surface is disposed opposite to the lens module. The first light-incident surface has a first optical power.

[0007] The second reflector has a second light-incident surface and a second light-outceasing surface. The second light-incident surface is disposed opposite to the lens module, and the second light-outceasing surface is disposed sequentially opposite to the filter element and the photosensitive element. The second light-incident surface has a second optical power.

[0008] This application also provides an electronic device including the aforementioned optical components.

[0009] The optical component in this embodiment can achieve a larger sensor size and a longer focal length by using a first optical power on the first light-incident surface and a second optical power on the second light-incident surface. This allows the optical component to capture images further and more clearly, which is beneficial for improving the user experience. Furthermore, compared to the telephoto optical systems used in related technologies, the optical component in this embodiment has a first reflector and a second reflector respectively set on both sides of the lens module to reflect light at the light-incident and light-out points of the lens module, instead of using a telephoto lens. This helps to reduce the overall length of the optical component, making it smaller in size, and thus alleviating the problem of a large optical component size while ensuring the shooting effect. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the optical components disclosed in the embodiments of this application;

[0011] Figure 2 This is a schematic diagram of the optical components in Embodiment 1 disclosed in this application;

[0012] Figure 3 This is a schematic diagram of the axial chromatic difference corresponding to the optical component in Embodiment 1 of this application;

[0013] Figure 4 This is a schematic diagram of the defocus MTF corresponding to the optical component in Embodiment 1 disclosed in this application;

[0014] Figure 5 This is a schematic diagram of the optical components in Embodiment 2 disclosed in this application;

[0015] Figure 6 This is a schematic diagram of the axial chromatic difference corresponding to the optical component in Embodiment 2 disclosed in this application;

[0016] Figure 7 This is a schematic diagram of the defocus MTF corresponding to the optical component in Embodiment 2 disclosed in this application;

[0017] Figure 8 This is a schematic diagram of the optical components in Embodiment 3 disclosed in this application;

[0018] Figure 9 This is a schematic diagram of the axial chromatic difference corresponding to the optical component in Embodiment 3 of this application;

[0019] Figure 10 This is a schematic diagram of the defocus MTF corresponding to the optical component in Embodiment 3 disclosed in this application;

[0020] Figure 11This is a schematic diagram of the optical components in Embodiment 4 disclosed in this application;

[0021] Figure 12 This is a schematic diagram of the axial chromatic difference corresponding to the optical component in Embodiment 4 of this application;

[0022] Figure 13 This is a schematic diagram of the defocus MTF corresponding to the optical component in Embodiment 4 of this application;

[0023] Figure 14 This is a schematic diagram of the optical components in Embodiment 5 of this application;

[0024] Figure 15 This is a schematic diagram of the axial chromatic difference corresponding to the optical component in Embodiment 5 of this application;

[0025] Figure 16 This is a schematic diagram of the defocus MTF corresponding to the optical component in Embodiment 5 of this application;

[0026] Figure 17 This is a schematic diagram of the optical components in Embodiment 6 of this application;

[0027] Figure 18 This is a schematic diagram of the axial chromatic difference corresponding to the optical component in Embodiment 6 of this application;

[0028] Figure 19 This is a schematic diagram of the defocus MTF corresponding to the optical component in Embodiment 6 of this application;

[0029] Figure 20 This is a schematic diagram of the optical components in Embodiment 7 of this application;

[0030] Figure 21 This is a schematic diagram of the optical components in Embodiment 8 of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 10-First reflector; 11-First light-incident surface; 12-First light-out surface; 13-First reflective surface;

[0033] 20-Second reflector; 20a-Reflector body; 20b-First lens; 20c-Second lens; 21-Second incident light surface; 22-Second emitting light surface; 23-Second reflecting surface;

[0034] 30 - Lens module; 30a - First lens group; 30b - Second lens group; 31 - First lens; 32 - Second lens; 33 - Third lens; 34 - Fourth lens; 35 - Fifth lens; 40 - Filter element; 50 - Photosensitive element. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0037] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.

[0038] refer to Figures 1 to 21 This application discloses an optical component, which includes a first reflector 10, a second reflector 20, a lens module 30, a filter element 40, and a photosensitive element 50.

[0039] The first reflector 10 can be disposed at the light-incident point of the lens module 30 to reflect light so that the reflected light can enter the lens module 30; the second reflector 20 can be disposed at the light-outceasing point of the lens module 30 to reflect light emitted from the lens module 30. The filter element 40 can be used for filtering, such as filtering infrared light. Optionally, the base plate of the filter element 40 can be a flat glass plate, with an AR anti-reflection film and an IR cut-off film respectively coated on the surface of the flat glass. The photosensitive element 50 can receive light and use it for imaging.

[0040] In some embodiments, the first reflector 10 has a first light-incident surface 11 and a first light-exiting surface 12. The first light-incident surface 11 is used to receive light, and the first light-exiting surface 12 is disposed opposite to the lens module 30. Furthermore, the first light-incident surface 11 may have a first optical power. Based on this, after light enters the first reflector 10 via the first light-incident surface 11, it is reflected by the internal structure of the first reflector 10 and propagates towards the first light-exiting surface 12. It then propagates towards the lens module 30 through the first light-exiting surface 12, allowing the light to enter the lens module 30. At the same time, due to the existence of the first optical power, when light enters the first light-incident surface 11, the first light-incident surface 11 can affect the propagation direction of the light, causing the light to converge or diverge to meet the light incident requirements.

[0041] Optionally, the first reflector 10 may also have a first reflective surface 13, which is used to receive incident light rays entering from the first light-incident surface 11 and emit reflected light rays towards the first light-exiting surface 12, so that the reflected light rays exit from the first light-exiting surface 12. For example, the angle between the incident light rays and the reflected light rays can be 90°, so that the light rays can be refracted by 90° through the first reflective surface 13.

[0042] Optionally, the first reflector 10 may be a prism, a plane mirror, or an element containing a reflective surface.

[0043] The second reflector 20 has a second light-incident surface 21 and a second light-outceasing surface 22. The second light-incident surface 21 is disposed opposite to the lens module 30, and the second light-outceasing surface 22 is disposed opposite to the filter element 40 and the photosensitive element 50 in sequence. Based on this, light emitted from the lens module 30 can enter the second reflector 20 from the second light-incident surface 21, and after being reflected by the internal structure of the second reflector 20, it propagates toward the second light-outceasing surface 22. Then, it propagates toward the filter element 40 through the second light-outceasing surface 22, and the filter element 40 filters the light to obtain the light of the desired wavelength. The filtered light then propagates to the photosensitive element 50 and finally forms an image on the photosensitive element 50.

[0044] Furthermore, since the second light-incident surface 21 has a second optical power, when light enters the second light-incident surface 21, the second light-incident surface 21 can affect the direction of light propagation, so that the light converges or diverges to meet the requirements for light entry.

[0045] Optionally, the second reflector 20 may also have at least one second reflecting surface 23, which is used to reflect light rays incident from the second incident surface 21 at least once, so that the light rays exit from the second emitting surface 22. For example, the angle between the incident light ray and the reflected light ray may be 90°, so that the light rays can be deflected by 90° by the second reflecting surface 23.

[0046] Optionally, the second reflector 20 may be a prism, a plane mirror, or an element containing a reflective surface.

[0047] It should be noted that the functions of the first reflector 10 and the second reflector 20 mainly include folding the optical path and optical image stabilization.

[0048] Based on the above configuration, the optical component in this embodiment can achieve a larger sensor size and a longer focal length by utilizing the first optical power of the first light-incident surface 11 and the second optical power of the second light-incident surface 21. This allows the optical component to capture images from farther distances with greater clarity, improving the user experience. It also reduces the overall size of the optical component and enhances close-up photography capabilities. Compared to the telephoto optical systems used in related technologies, the optical component in this embodiment features a first reflector 10 and a second reflector 20 on both sides of the lens module 30 to reflect light at the light-incident and light-out points of the lens module 30, respectively. Instead of using a telephoto lens, this reduces the overall length of the optical component, making it smaller and thus alleviating the problem of a large optical component size while maintaining shooting performance.

[0049] In some embodiments, the first optical power can be positive optical power, so that the first light-incident surface 11 can converge the incident light, reduce the light spot size, enhance the light quality, improve the light collection efficiency of the lens module 30, reduce background noise interference, and have a better effect on optimizing image clarity.

[0050] Optionally, the first incident surface 11 can be a convex surface, which protrudes in the opposite direction to the incident direction of the light at the first incident surface 11. In this way, the convex surface can converge the incident light.

[0051] For example, the first light-incident surface 11 can be a spherical convex surface, an ellipsoidal convex surface, etc. Of course, it can also be other forms of convex surface, which are not specifically limited here.

[0052] In addition, the first light-emitting surface 12 can have a third optical power, and the third optical power is a negative optical power. In this way, when light is emitted through the first light-emitting surface 12, the first light-emitting surface 12 can diffuse the light, thereby increasing the area of ​​the light entering the lens module 30, which is beneficial to improving the uniformity of light incidence.

[0053] Optionally, the first light-emitting surface 12 can be a concave surface, which is recessed in the direction opposite to the emission direction of the light at the first light-emitting surface 12, that is, recessed in the direction away from the lens module 30. In this way, the concave surface can diffuse the emitted light.

[0054] For example, the first light-emitting surface 12 can be a spherical concave surface, an ellipsoidal concave surface, etc. Of course, it can also be other forms of concave surface, which are not specifically limited here.

[0055] In other embodiments, the third optical power may also have zero optical power, so that when the light rays exit the first light-emitting surface 12, they will not be affected by the converging or diverging effect of the first light-emitting surface 12.

[0056] Optionally, the first light-emitting surface 12 can be a plane.

[0057] In some embodiments, the second optical power can be positive optical power, so that the second light-incident surface 21 can converge the light emitted from the lens module 30, which can reduce the light spot size, enhance the light quality, improve the light collection efficiency of the filter element 40 and the photosensitive element 50, reduce background noise interference, and have a better effect on optimizing image clarity.

[0058] Optionally, the second light-incident surface 21 can be a convex surface, which protrudes in the direction opposite to the incident direction of the light at the second light-incident surface 21, that is, protrudes towards the lens module 30. In this way, the convex surface can converge the light.

[0059] For example, the second light-incident surface 21 can be a spherical convex surface, an ellipsoidal convex surface, etc. Of course, it can also be other forms of convex surface, which are not specifically limited here.

[0060] In other embodiments, the second optical power can also be a negative optical power. In this way, when light is incident through the second incident surface 21, the second incident surface 21 can diffuse the light, thereby increasing the area of ​​the light incident on the second reflector 20, which is beneficial to improving the uniformity of light incident.

[0061] Optionally, the second light-incident surface 21 can be a concave surface, which is recessed in the direction in which the light is incident at the second light-incident surface 21, that is, recessed in the direction away from the lens module 30. In this way, the concave surface can diffuse the incident light.

[0062] For example, the second light-incident surface 21 can be a spherical concave surface, an ellipsoidal concave surface, etc. Of course, it can also be other forms of concave surface, which are not specifically limited here.

[0063] In some other embodiments, the second optical power can also be zero optical power, so that when light is incident on the second incident surface 21, it will not be affected by the converging or diverging effect of the second incident surface 21.

[0064] For example, the second light-incident surface 21 can be a plane.

[0065] In addition, the second light-emitting surface 22 can have a fourth optical power, and the fourth optical power can be a negative optical power. In this way, when light is emitted through the second light-emitting surface 22, the second light-emitting surface 22 can diffuse the light, thereby increasing the area of ​​the light incident on the filter element 40 and the photosensitive element 50, which is beneficial to improving the uniformity of light incident.

[0066] Optionally, the second light-emitting surface 22 can be a concave surface, which is recessed in the direction opposite to the emission direction of the light at the second light-emitting surface 22, that is, recessed in the direction away from the filter element 40. In this way, the concave surface can diffuse the emitted light.

[0067] For example, the second light-emitting surface 22 can be a spherical concave surface, an ellipsoidal concave surface, etc. Of course, it can also be other forms of concave surface, which are not specifically limited here.

[0068] Optionally, the fourth optical power can also be zero optical power. In this case, when the light rays exit the second light-emitting surface 22, they will not be affected by the converging or diverging effects of the second light-emitting surface 22.

[0069] For example, the second light-emitting surface 22 can be a plane.

[0070] In some more specific embodiments, the second optical power is a positive optical power and the fourth optical power is a negative optical power, so that the light rays are converged by the second incident surface and diverged by the second emitting surface 22.

[0071] In some embodiments, the second reflector 20 may include a reflector body 20a and a first lens 20b. The surface of the reflector body 20a near the lens module 30 may be flat, the side of the first lens 20b facing the reflector body 20a is attached to the surface of the reflector body 20a near the lens module 30, and the other side of the first lens 20b away from the reflector body 20a is convex.

[0072] Based on the above configuration, the side of the first lens 20b opposite to the reflector body 20a can serve as the second incident surface, allowing light to enter the second reflector 20. Furthermore, the second incident surface is convex, which can converge the light.

[0073] It should be noted here that the first lens 20b can be a convex lens with one end face convex.

[0074] In other embodiments, the second reflector 20 may include a reflector body 20a and a second lens 20c. The surface of the reflector body 20a near the lens module 30 may be planar, the surface of the second lens 20c facing the reflector body 20a may be concave, and the surface of the second lens 20c away from the reflector body 20a may be convex.

[0075] Based on the above configuration, the surface of the second lens 20c facing away from the reflector body 20a can serve as the second incident surface, allowing light to be incident on the second reflector 20. Furthermore, the second incident surface is convex, thus converging the light. Additionally, the light passing through the second lens 20c can exit through the side surface of the second lens 20c facing the reflector body 20a, thereby diverging the light and increasing the area of ​​light incident on the reflector body 20a, thus improving the uniformity of the light.

[0076] In some embodiments, the lens module 30 may include a plurality of lenses arranged sequentially from the first light-emitting surface 12 to the second light-incident surface 21. Based on this, light reflected by the first reflector 10 can be transmitted sequentially through the plurality of lenses, thereby changing the propagation form of the light and ultimately obtaining the desired form of light.

[0077] In some more specific embodiments, the multiple lenses may include a first lens 31, a second lens 32, a third lens 33, and a fourth lens 34 arranged sequentially from the first light-emitting surface 12 to the second light-emitting surface 22. Specifically, the first lens 31 may have positive optical power, the surface of the first lens 31 near the first light-emitting surface 12 may be convex, and the Abbe number of the first lens 31 may be greater than 50; the second lens 32 may have negative optical power, the surface of the second lens 32 away from the first lens 31 may be concave, and the Abbe number of the second lens 32 may be less than 40; the third lens 33 may have positive optical power, the surface of the third lens 33 near the second lens 32 may be convex, and the surface of the third lens 33 away from the second lens 32 may be concave; and the fourth lens 34 may have negative optical power, and the surface of the fourth lens 34 away from the third lens 33 may be concave.

[0078] In other embodiments, the plurality of lenses may include a first lens 31, a second lens 32, a third lens 33, and a fourth lens 34 arranged sequentially from the first light-emitting surface 12 to the second light-emitting surface 22. The characteristics of the first lens 31, the second lens 32, and the third lens 33 may be substantially the same as those of the first lens 31, the second lens 32, and the third lens 33, while the fourth lens 34 may have positive optical power, and the surface of the fourth lens 34 facing the third lens 33 may be convex.

[0079] In some other embodiments, the plurality of lenses may include a first lens 31, a second lens 32, a third lens 33, a fourth lens 34 and a fifth lens 35 arranged sequentially from the first light-emitting surface 12 to the second light-incident surface 21. The first lens 31 can have positive optical power, the surface of the first lens 31 near the first optical surface can be convex, and the Abbe number of the first lens 31 can be greater than 50; the second lens 32 can have negative optical power, the surface of the second lens 32 away from the first lens 31 can be concave, and the Abbe number of the second lens 32 can be less than 40; the third lens 33 can have positive optical power, the surface of the third lens 33 near the second lens 32 can be convex, and the surface of the third lens 33 away from the second lens 32 can be concave; the fourth lens 34 can have positive optical power, the surface of the fourth lens 34 near the third lens 33 can be concave, and the surface of the fourth lens 34 away from the third lens 33 can be convex; the fifth lens 35 can have negative optical power, the surface of the fifth lens 35 near the fourth lens 34 can be concave, and the surface of the fifth lens 35 away from the fourth lens 34 can be convex.

[0080] Optionally, all five lenses mentioned above can be aspherical lenses. For example, the lens surface shape can be an even-order aspherical surface, satisfying the aspherical formula describing an aspherical surface:

[0081]

[0082] Where c = 1 / R, i.e., the curvature corresponding to the radius; r is the perpendicular distance from a point on the optical surface to the optical axis; z represents the sag of the point along the optical axis; k is the quadratic curve coefficient of the surface; and Ai represents the i-th order aspherical coefficient.

[0083] Based on the constraints, some embodiments of the condition boundary are as follows:

[0084] Example 1:

[0085] refer to Figure 2 The first reflector 10 is a prism with optical power, its object-side surface is convex, and its image-side surface is flat. Light rays enter from the first incident surface along the first optical axis, are reflected by the first reflecting surface 13, and then exit from the first exit surface along the second optical axis. Here, the object-side can be understood as the side where the object is located, and the side of the lens module facing the object-side is the object-side surface of the lens module. Figure 2 The left side of the image; the image side can be understood as the side where the image of the object being photographed is located, and the side of the lens module facing the image side is the image side surface, such as... Figure 2 On the right side of the middle.

[0086] The first reflector 10 has positive optical power, which helps to reduce the size of the lens module 30 and the second reflector 20, thereby reducing the overall volume of the optical assembly.

[0087] In addition, the focal length of the first reflector 10 is f1, and the focal length of the optical component is efl, and the condition 2≤fl / efl is satisfied, which helps to reduce the sensitivity of the prism image stabilization.

[0088] The lens module 30 includes four aspherical lenses, namely a first lens 31, a second lens 32, a third lens 33, and a fourth lens 34 arranged sequentially from the object side to the image side along the second optical axis. The first lens 31 has positive optical power, its object side is convex, and its Abbe number Vd1 satisfies Vd1 > 50; the second lens 32 has negative optical power, its image side is concave, and its Abbe number Vd2 satisfies Vd2 < 40; the third lens 33 has positive optical power, its object side is convex, and its image side is concave; the fourth lens 34 has negative optical power, and its image side is concave.

[0089] The second reflector 20 is a prism with optical power. The object side is convex and the image side is flat. Light rays are incident on the second incident surface along the second optical axis, reflected by the second reflector 23, and then emitted along the perpendicular direction of the photosensitive element 50. There is only one reflection.

[0090] The basic specifications achieved in Example 1 are shown in Table 1-1.

[0091] efl F# f1 f2 f3 Chief 32.3mm 2.8 69.7mm 79.3mm 192.95mm 48.8mm

[0092] Wherein, eFL is the focal length of the optical component, F# is the aperture of the optical component, DFOV is the field of view, f1 is the focal length of the first reflector 10, f2 is the focal length of the lens module 30, f3 is the focal length of the second reflector 20, and L is the length of the optical component along the second optical axis.

[0093] Table 1-2 shows the surface type, radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical assembly of Example 1.

[0094]

[0095]

[0096] Table 1-3 shows the aspherical higher-order coefficients of each lens surface in Example 1.

[0097] Surface number K A4 A6 A8 A10 A12 A14 A16 S1 0.00E+00 4.21E-08 4.91E-08 -1.02E-09 1.67E-11 -1.52E-13 0.00E+00 0.00E+00 S4 (stop) 0.00E+00 -1.36E-04 1.03E-05 6.95E-08 2.23E-08 -4.06E-10 0.00E+00 0.00E+00 S5 0.00E+00 -9.31E-04 3.51E-05 7.67E-07 -2.15E-08 2.70E-11 0.00E+00 0.00E+00 S6 0.00E+00 2.90E-03 -2.15E-04 5.63E-06 -5.28E-08 0.00E+00 0.00E+00 0.00E+00 S7 0.00E+00 5.80E-03 -3.48E-04 1.09E-05 -3.34E-07 9.91E-09 0.00E+00 0.00E+00 S8 0.00E+00 -4.80E-04 1.40E-05 -5.89E-06 1.78E-07 5.36E-09 -3.51E-10 4.39E-12 S9 0.00E+00 -9.83E-04 7.78E-06 -2.36E-06 1.22E-07 -3.77E-09 2.18E-10 -6.72E-12 S10 0.00E+00 2.80E-04 4.41E-06 -5.82E-07 3.15E-08 -4.13E-10 0.00E+00 0.00E+00 S11 0.00E+00 6.17E-04 -2.14E-06 -1.25E-07 1.18E-08 -1.83E-10 0.00E+00 0.00E+00 S12 0.00E+00 3.77E-05 -1.20E-06 7.97E-08 -2.42E-09 3.28E-11 0.00E+00 0.00E+00

[0098] The axial color difference corresponding to Example 1 is as follows: Figure 3 As shown, from Figure 3The five curves show the colored light at wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm, respectively. It can be seen that in Example 1, the axial color difference is controlled within a very small range, and the color difference convergence is good.

[0099] The defocus MTF corresponding to Example 1 is as follows: Figure 4 As shown, from Figure 4 It can be seen that at a spatial frequency of 100 lp / mm, the MTF of the entire field of view is greater than 0.6, indicating extremely high resolution.

[0100] Example 2:

[0101] refer to Figure 5 The main difference between Embodiment 2 and Embodiment 1 is that the second reflector 20 undergoes two reflections, and the photosensitive element 50 is placed at an angle, which is beneficial to the height of the optical component scheme. The structures of the first reflector 10, lens module 30, etc. are basically the same as those in Embodiment 1.

[0102] The second reflector 20 is a prism with optical power. The object side is convex and the image side is flat. Light rays are incident on the second incident surface along the second optical axis, and after being reflected by one of the second reflector surfaces 23, they reach the other second reflector surface 23. After being reflected by the other second reflector surface 23, they are emitted in the vertical direction of the photosensitive element 50.

[0103] The basic specifications achieved in Example 2 are shown in Table 2-1.

[0104] efl F# f1 f2 f3 Chief 32.9mm 2.8 69.8mm 86.84mm 154.3mm 57.6mm

[0105] Wherein, eFL is the focal length of the optical component, F# is the aperture of the optical component, DFOV is the field of view, f1 is the focal length of the first reflector 10, f2 is the focal length of the lens module 30, f3 is the focal length of the second reflector 20, and L is the length of the optical component along the second optical axis.

[0106] Table 2-2 shows the surface type, radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical assembly of Example 2.

[0107]

[0108] Table 2-3 shows the aspherical higher-order coefficients of each lens surface in Example 2.

[0109] Surface number K A4 A6 A8 A10 A12 A14 A16 S1 0.00E+00 3.40E-07 3.44E-08 -5.78E-10 7.62E-12 -6.94E-14 0.00E+00 0.00E+00 S4 (stop) 0.00E+00 -8.06E-05 9.03E-06 1.36E-07 1.58E-08 -3.21E-10 0.00E+00 0.00E+00 S5 0.00E+00 -9.12E-04 4.40E-05 9.03E-08 -5.16E-09 -1.16E-10 0.00E+00 0.00E+00 S6 0.00E+00 2.95E-03 -2.14E-04 5.53E-06 -5.09E-08 0.00E+00 0.00E+00 0.00E+00 S7 0.00E+00 5.55E-03 -3.31E-04 1.02E-05 -2.80E-07 7.63E-09 0.00E+00 0.00E+00 S8 0.00E+00 -6.45E-04 1.83E-05 -5.28E-06 1.82E-07 1.71E-09 -1.82E-10 2.19E-12 S9 0.00E+00 -9.95E-04 4.43E-06 -1.86E-06 8.83E-08 -2.86E-09 1.66E-10 -4.57E-12 S10 0.00E+00 2.63E-04 1.94E-06 -3.13E-07 1.69E-08 -1.49E-10 0.00E+00 0.00E+00 S11 0.00E+00 6.24E-04 -3.33E-06 7.46E-09 5.06E-09 -6.41E-11 0.00E+00 0.00E+00 S12 0.00E+00 3.86E-05 -1.24E-06 8.12E-08 -2.48E-09 3.22E-11 0.00E+00 0.00E+00

[0110] The axial color difference corresponding to Example 2 is as follows: Figure 6 As shown, from Figure 6The five curves show the colored light at wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm, respectively. It can be seen that in Example 2, the axial color difference is controlled within a very small range, and the color difference convergence is good.

[0111] The defocus MTF corresponding to Example 2 is as follows: Figure 7 As shown, from Figure 7 It can be seen that at a spatial frequency of 100 lp / mm, the MTF of the entire field of view is greater than 0.6, indicating extremely high resolution.

[0112] Example 3:

[0113] refer to Figure 8 Compared with Embodiment 1, Embodiment 3 is mainly different in that the first reflector 10 and the second reflector 20 are both provided with two surfaces of optical power, which can further improve the clarity performance of the optical components; in addition, the structure of the lens module 30 and the like is basically the same as that of Embodiment 1.

[0114] The first reflector 10 is a prism with optical power. The object side is convex and the image side is concave. Light rays are incident on the first incident surface along the first optical axis, and after being reflected by the first reflecting surface 13, they extend out from the first exit surface along the second optical axis.

[0115] The second reflector 20 is a prism with optical power. The object side is convex and the image side is concave. Light rays are incident on the second incident surface along the second optical axis, reflected by the second reflector 23, and then emitted along the perpendicular direction of the photosensitive element 50. There is only one reflection.

[0116] The basic specifications achieved in Example 3 are shown in Table 3-1.

[0117] efl F# f1 f2 f3 Chief 32.7mm 2.8 78.2mm 59.24mm 237.6mm 48.4mm

[0118] Wherein, eFL is the focal length of the optical component, F# is the aperture of the optical component, DFOV is the field of view, f1 is the focal length of the first reflector 10, f2 is the focal length of the lens module 30, f3 is the focal length of the second reflector 20, and L is the length of the optical component along the second optical axis.

[0119] Table 3-2 shows the surface type, radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical assembly of Example 3.

[0120]

[0121] Table 3-3 shows the aspherical higher-order terms coefficients of each lens surface in Example 3.

[0122]

[0123]

[0124] The axial color difference corresponding to Example 3 is as follows: Figure 9 As shown, from Figure 9 The five curves show the colored light at wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm, respectively. It can be seen that in Example 3, the axial color difference is controlled within a very small range, and the color difference convergence is good.

[0125] The defocus MTF corresponding to Example 3 is as follows: Figure 10 As shown, from Figure 10 It can be seen that at a spatial frequency of 100 lp / mm, the MTF of the entire field of view is greater than 0.6, indicating extremely high resolution.

[0126] Example 4:

[0127] refer to Figure 11 The main difference between Example 4 and Example 1 is the manufacturing of the convex surface of the second reflector 20. In Example 1, the convex surface of the second reflector 20 is formed by molding or cold working. In Example 4, the second reflector 20 includes a reflector body 20a and a first lens 20b, which are fixed by gluing. In addition, the structures of the first reflector 10, lens module 30, etc. are basically the same as those in Example 1.

[0128] The second reflector 20 is a prism with optical power. The object side is convex, and the convex surface is formed by bonding a lens (i.e., the first lens 20b) to the plane of the prism (i.e., the reflector body 20a). The object side of the first lens 20b is convex, and the image side is flat. The plane of the image side is bonded and fixed to the prism. The image side of the reflector body 20a is flat. Light rays enter the first lens 20b along the second optical axis, then enter the reflector body 20a, and reach the second reflecting surface 23. After being reflected by the second reflecting surface 23, the light rays are emitted along the vertical direction of the photosensitive element 50.

[0129] The basic specifications achieved in Example 4 are shown in Table 4-1.

[0130] efl F# f1 f2 f3 Chief 32.3mm 2.8 77.2mm 69.8mm 195.93mm 48.3mm

[0131] Wherein, eFL is the focal length of the optical component, F# is the aperture of the optical component, DFOV is the field of view, f1 is the focal length of the first reflector 10, f2 is the focal length of the lens module 30, f3 is the focal length of the second reflector 20, and L is the length of the optical component along the second optical axis.

[0132] Table 4-2 shows the surface type, radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical assembly of Example 4.

[0133]

[0134]

[0135] Table 4-3 shows the aspherical higher-order coefficients of each lens surface in Example 4.

[0136] Surface number K A4 A6 A8 A10 A12 A14 A16 S1 0.00E+00 4.18E-07 6.01E-08 -1.37E-09 2.24E-11 -1.88E-13 0.00E+00 0.00E+00 S4 (stop) 0.00E+00 -1.37E-04 9.48E-06 -2.93E-09 1.70E-08 -2.48E-10 0.00E+00 0.00E+00 S5 0.00E+00 -8.78E-04 4.05E-05 -4.35E-07 2.31E-08 -4.51E-10 0.00E+00 0.00E+00 S6 0.00E+00 2.67E-03 -1.83E-04 4.23E-06 -3.17E-08 0.00E+00 0.00E+00 0.00E+00 S7 0.00E+00 5.70E-03 -3.32E-04 1.06E-05 -3.45E-07 9.06E-09 0.00E+00 0.00E+00 S8 0.00E+00 -1.36E-04 3.26E-06 -5.50E-06 2.09E-07 5.48E-10 -1.39E-10 1.34E-12 S9 0.00E+00 -8.36E-04 -5.34E-06 -1.47E-06 9.97E-08 -3.35E-09 1.82E-10 -5.38E-12 S10 0.00E+00 4.87E-04 -2.86E-06 -2.22E-07 2.11E-08 -2.47E-10 0.00E+00 0.00E+00 S11 0.00E+00 7.97E-04 -4.88E-06 -3.79E-08 1.08E-08 -1.62E-10 0.00E+00 0.00E+00 S12 0.00E+00 3.09E-05 -1.32E-06 9.16E-08 -2.92E-09 4.07E-11 0.00E+00 0.00E+00

[0137] The axial color difference corresponding to Example 4 is as follows: Figure 12 As shown, from Figure 12 The five curves show the colored light at wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm, respectively. It can be seen that in Example 4, the axial color difference is controlled within a very small range, and the color difference convergence is good.

[0138] The defocus MTF corresponding to Example 3 is as follows: Figure 10 As shown, from Figure 10 It can be seen that at a spatial frequency of 100 lp / mm, the MTF of the entire field of view is greater than 0.6, indicating extremely high resolution.

[0139] Example 5:

[0140] refer to Figure 14 The main difference between Embodiment 5 and Embodiment 1 lies in the manufacturing of the convex surface of the second reflector 20. In Embodiment 1, the convex surface of the second reflector 20 is formed by molding or cold working. In Embodiment 5, the second reflector 20 includes a reflector body 20a and a second lens 20c, with the second lens 20c assembled to the reflector body 20a. Furthermore, the structures of the first reflector 10, lens module 30, etc., are basically the same as in Embodiment 1. The difference between Embodiment 5 and Embodiment 4 is that in Embodiment 5, the two opposite sides of the second lens 20c are non-planar, while in Embodiment 4, one side of the first lens 20b is convex, and the other side is planar.

[0141] The second reflector 20 is a prism with optical power. The object side is convex, and the convex surface is formed by assembling a lens (i.e., the second lens 20c) and the plane of the prism (i.e., the reflector body 20a). The object side of the second lens 20c is convex, and the image side is concave. The concave surface of the image side is glued and fixed to the prism. The image side of the reflector body 20a is flat. Light rays enter the second lens 20c along the second optical axis, then enter the reflector body 20a, and reach the second reflecting surface 23. After being reflected by the second reflecting surface 23, the light rays are emitted along the vertical direction of the photosensitive element 50.

[0142] The basic specifications achieved in Example 5 are shown in Table 5-1.

[0143] efl F# f1 f2 f3 Chief 33.7mm 2.8 82.4mm 69.9mm 164.8mm 49.8mm

[0144] Wherein, eFL is the focal length of the optical component, F# is the aperture of the optical component, DFOV is the field of view, f1 is the focal length of the first reflector 10, f2 is the focal length of the lens module 30, f3 is the focal length of the second reflector 20, and L is the length of the optical component along the second optical axis.

[0145] Table 5-2 shows the surface type, radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical assembly of Example 5.

[0146]

[0147] Table 5-3 shows the aspherical higher-order coefficients of each lens surface in Example 5.

[0148]

[0149]

[0150] The axial color difference corresponding to Example 5 is as follows: Figure 15 As shown, from Figure 15 The five curves show the colored light at wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm, respectively. It can be seen that in Example 5, the axial color difference is controlled within a very small range, and the color difference convergence is good.

[0151] The defocus MTF corresponding to Example 5 is as follows: Figure 16 As shown, from Figure 16 It can be seen that at a spatial frequency of 100 lp / mm, the MTF of the entire field of view is greater than 0.6, indicating extremely high resolution.

[0152] In some embodiments, a portion of the multiple lenses can form a first lens group 30a, and another portion of the lenses can form a second lens group 30b. In this way, dividing the multiple lenses into two lens groups is beneficial to the macro performance of the optical components.

[0153] Optionally, the first lens group 30a and the second lens group 30b can be moved relative to each other along the optical axis of the lens module 30, thereby enabling the adjustment of the focal length.

[0154] Example 6:

[0155] refer to Figure 17 Compared with Example 1, the main difference in Example 6 is that the lens module 30 includes five lenses, and the five lenses are divided into two groups; in addition, the object side of the second reflector 20 is concave.

[0156] Specifically, the lens module 30 includes five aspherical lenses, namely, a first lens 31, a second lens 32, a third lens 33, a fourth lens 34, and a fifth lens 35 arranged sequentially from the object side to the image side along the second optical axis. The first lens 31 has positive optical power, its object side is convex, and its Abbe number Vd1 satisfies Vd1 > 50; the second lens 32 has negative optical power, its image side is concave, and its Abbe number Vd2 satisfies Vd2 < 40; the third lens 33 has positive optical power, its object side is convex, and its image side is concave; the fourth lens 34 has positive optical power, its object side is concave, and its image side is convex; and the fifth lens 35 has negative optical power, its object side is concave, and its image side is convex.

[0157] Furthermore, the first lens 31, the second lens 32, and the third lens 33 form a first lens group 30a, defined as a moving group, i.e., the AF group; the fourth lens 34 and the fifth lens 35 form a second lens group 30b, defined as a fixed group. Based on this, AF focusing can be achieved by moving the AF group.

[0158] The second reflector 20 is a prism with optical power. The object side is concave and the image side is flat. Light rays are incident on the second incident surface along the second optical axis, reflected by the second reflecting surface 23, and then emitted along the perpendicular direction of the photosensitive element 50. There is only one reflection.

[0159] The basic specifications achieved in Example 6 are shown in Table 6-1.

[0160] efl F# f1 f2 f3 Chief 37.7mm 2.8 66.86mm 48.4mm -37.3mm 50.36mm

[0161] Wherein, eFL is the focal length of the optical component, F# is the aperture of the optical component, DFOV is the field of view, f1 is the focal length of the first reflector 10, f2 is the focal length of the lens module 30, f3 is the focal length of the second reflector 20, and L is the length of the optical component along the second optical axis.

[0162] Table 6-2 shows the surface type, radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical assembly of Example 1.

[0163]

[0164] Table 6-3 shows the aspherical higher-order terms coefficients of each lens surface in Example 6.

[0165] Surface number K A4 A6 A8 A10 A12 A14 A16 S1 0.00E+00 -4.19E-06 -8.39E-10 1.08E-10 -5.52E-12 4.95E-14 0.00E+00 0.00E+00 S4 (stop) 0.00E+00 -3.27E-04 2.43E-05 -8.59E-07 3.06E-08 -3.24E-10 0.00E+00 0.00E+00 S5 0.00E+00 -2.81E-04 4.16E-05 -2.77E-06 8.73E-08 -8.77E-10 0.00E+00 0.00E+00 S6 0.00E+00 2.11E-03 -7.94E-05 7.47E-07 4.52E-09 0.00E+00 0.00E+00 0.00E+00 S7 0.00E+00 3.26E-03 -1.16E-04 2.26E-06 -9.04E-08 2.57E-09 0.00E+00 0.00E+00 S8 0.00E+00 1.47E-04 1.24E-05 -3.73E-06 1.34E-07 -5.02E-09 1.89E-10 -2.57E-12 S9 0.00E+00 -5.55E-04 1.33E-06 -9.68E-07 9.53E-08 -5.18E-09 1.47E-10 -1.72E-12 S10 0.00E+00 -2.01E-04 1.78E-06 5.46E-09 3.61E-10 -1.31E-11 0.00E+00 0.00E+00 S11 0.00E+00 -2.99E-04 7.69E-06 -3.70E-08 2.91E-09 -3.10E-11 0.00E+00 0.00E+00 S12 0.00E+00 5.12E-04 3.85E-05 -2.51E-07 1.03E-08 2.92E-10 0.00E+00 0.00E+00 S13 0.00E+00 7.02E-04 2.99E-05 -4.49E-07 1.21E-08 -1.10E-10 0.00E+00 0.00E+00

[0166] The axial color difference corresponding to Example 6 is as follows: Figure 18 As shown, from Figure 18The five curves show the colored light at wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm, respectively. It can be seen that in Example 6, the axial color difference is controlled within a very small range, and the color difference convergence is good.

[0167] The defocus MTF corresponding to Example 6 is as follows: Figure 19 As shown, from Figure 19 It can be seen that at a spatial frequency of 100 lp / mm, the MTF of the entire field of view is greater than 0.6, indicating extremely high resolution.

[0168] Example 7:

[0169] refer to Figure 20 The multiple lenses can be divided into a first lens group 30a and a second lens group 30b. The first lens group 30a is close to the first reflector 10, and the second lens group 30b is close to the second reflector 20, with the object-side surface of the second reflector 20 being convex. The first lens group 30a is a fixed group, and the second lens group 30b is an AF group, enabling autofocus and zoom functions. This facilitates miniaturization of the optical components and improves macro performance.

[0170] Example 8:

[0171] refer to Figure 21 The multiple lenses can be divided into a first lens group 30a and a second lens group 30b. The first lens group 30a is close to the first reflector 10, and the second lens group 30b is close to the second reflector 20, with the object-side surface of the second reflector 20 being convex. The first lens group 30a and the second lens group 30b are both AF groups, enabling autofocus and zoom functions. This facilitates miniaturization of the optical components and improves macro performance.

[0172] Optionally, the movement of the AF group can be driven by electromagnetic drive, motor screw drive, etc. Of course, other drive methods can also be used, which are not specifically limited here.

[0173] Based on the aforementioned optical components, this application also discloses an electronic device, which includes the aforementioned optical components.

[0174] In summary, the embodiments of this application, by employing dual optical power reflectors, can achieve a larger sensor size and a longer equivalent focal length, making them suitable for telephoto optical systems of 3.5X and above. This enhances the telephoto capability of the lens module 30 and improves the user experience. By setting a first reflector 10 and a second reflector 20 before and after the lens module 30, respectively, the length of the optical components can be reduced, increasing the convenience of electronic devices using these components. The first reflector 10 can take various forms, such as a prism with optical power, which can help reduce the aperture and length of the lens module 30 and the second reflector 20, further reducing the size of the optical components and also facilitating optical image stabilization. The second reflector 20 can also take various forms, such as a prism with optical power, which can effectively improve the optical performance of the lens components.

[0175] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An optical component, characterized in that, include: The system comprises a first reflector (10), a second reflector (20), a lens module (30), a filter element (40), and a photosensitive element (50); The first reflector (10) has a first light-incident surface (11) and a first light-outceasing surface (12). The first light-incident surface (11) is used to receive light, and the first light-outceasing surface (12) is disposed opposite to the lens module (30). The first light-incident surface (11) has a first optical power. The second reflector (20) has a second light-incident surface (21) and a second light-outceasing surface (22). The second light-incident surface (21) is disposed opposite to the lens module (30), and the second light-outceasing surface (22) is disposed opposite to the filter element (40) and the photosensitive element (50) in sequence. The second light-incident surface (21) has a second optical power.

2. The optical component according to claim 1, characterized in that, The first optical power is a positive optical power; And / or, the first light-emitting surface (12) has a third optical power, which is a negative optical power or a zero optical power.

3. The optical component according to claim 2, characterized in that, The first light-incident surface (11) is a convex surface, and the convex surface protrudes in a direction opposite to the incident direction of the light at the first light-incident surface (11); The first light-emitting surface (12) is a concave surface, and the concave surface is recessed in the direction opposite to the emission direction of the light at the first light-emitting surface (12), or the first light-emitting surface (12) is a plane.

4. The optical component according to claim 1, characterized in that, The second optical power is a positive optical power, a negative optical power, or zero optical power; Alternatively, the second light-emitting surface (22) has a fourth optical power, the second optical power is a positive optical power, and the fourth optical power is a negative optical power or zero optical power.

5. The optical component according to claim 4, characterized in that, The second light-incident surface (21) is a convex surface, which protrudes in the direction opposite to the incident direction of the light at the second light-incident surface (21); or, the second light-incident surface (21) is a concave surface, which is recessed in the direction of the incident direction of the light at the second light-incident surface (21); or, the second light-incident surface (21) is a plane. The second light-emitting surface (22) is a concave surface, which is recessed in the direction opposite to the emission direction of the light at the second light-emitting surface (22), or the second light-emitting surface (22) is a plane.

6. The optical component according to claim 5, characterized in that, The second reflector (20) includes a reflector body (20a) and a first lens (20b). The surface of the reflector body (20a) near the lens module (30) is flat. The side surface of the first lens (20b) facing the reflector body (20a) is attached to the surface of the reflector body (20a) near the lens module (30). The other side surface of the first lens (20b) away from the reflector body (20a) is convex. or, The second reflector (20) includes a reflector body (20a) and a second lens (20c). The surface of the reflector body (20a) near the lens module (30) is flat. The surface of the second lens (20c) facing the reflector body (20a) is concave, and the surface of the second lens (20c) away from the reflector body (20a) is convex.

7. The optical component according to any one of claims 1 to 6, characterized in that, The lens module (30) includes multiple lenses; The plurality of lenses are arranged sequentially from the first light-emitting surface (12) to the second light-incident surface (21).

8. The optical component according to claim 7, characterized in that, The plurality of lenses include a first lens (31), a second lens (32), a third lens (33), and a fourth lens (34) arranged sequentially from the first light-emitting surface (12) to the second light-incident surface (21). The first lens (31) has positive optical power, the surface of the first lens (31) near the first light-emitting surface (12) is convex, and the Abbe number of the first lens (31) is greater than 50. The second lens (32) has negative optical power, the surface of the second lens (32) away from the first lens (31) is concave, and the Abbe number of the second lens (32) is less than 40. The third lens (33) has positive optical power, the surface of the third lens (33) near the second lens (32) is convex, and the surface away from the second lens (32) is concave. The fourth lens (34) has negative optical power, and the surface of the fourth lens (34) away from the third lens (33) is concave. Alternatively, the plurality of lenses may include a first lens (31), a second lens (32), a third lens (33), a fourth lens (34), and a fifth lens (35) arranged sequentially from the first light-emitting surface (12) to the second light-receiving surface (21). The first lens (31) has positive optical power, and the surface of the first lens (31) near the first light-emitting surface (12) is convex. The Abbe number of the first lens (31) is greater than 50. The second lens (32) has negative optical power, and the surface of the second lens (32) away from the first lens (31) is concave. 32) The Abbe number is less than 40, the third lens (33) has positive optical power, the surface of the third lens (33) near the second lens (32) is convex, and the surface away from the second lens (32) is concave, the fourth lens (34) has positive optical power, the surface of the fourth lens (34) near the third lens (33) is concave, and the surface away from the third lens (33) is convex, the fifth lens (35) has negative optical power, the surface of the fifth lens (35) near the fourth lens (34) is concave, and the surface away from the fourth lens (34) is convex.

9. The optical component according to claim 8, characterized in that, A portion of the plurality of lenses form a first lens group (30a), and another portion of the lenses form a second lens group (30b); Along the optical axis of the lens module (30), the first lens group (30a) and the second lens group (30b) can move relative to each other.

10. An electronic device, characterized in that, Includes the optical component described in any one of claims 1 to 9.

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