Optical image capture lens assembly, imaging device and electronic device
By designing an optical image capture lens group consisting of a turning group and a lens group, the balance problem between imaging quality and size of the optical lens is solved, achieving stable imaging and miniaturized design at different object distances.
Patent Information
- Application Number
- CN202210598307.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2022-04-27
- Filing Date
- 2022-05-30
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2042-05-30
AI Technical Summary
Existing optical lenses find it difficult to strike a balance between requirements such as image quality, sensitivity, aperture size, volume or viewing angle, and are unable to meet diverse application needs.
An optical image capture lens assembly was designed, comprising a turning group and a lens group. By utilizing a combination of prisms and a moving group, the focal length and optical path configuration were adjusted to meet the requirements of miniaturization and high imaging quality.
It achieves stable image quality during the focusing process and can compress the volume of the optical lens to adapt to imaging requirements of different object distances.
Smart Images

Figure CN115437109B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an optical image capturing lens assembly, an imaging device and an electronic device, and in particular to an optical image capturing lens assembly and an imaging device suitable for electronic devices. Background Art
[0002] As semiconductor process technology becomes more advanced, the performance of electronic photosensitive elements has been improved, and pixels can reach smaller sizes. Therefore, optical lenses with high imaging quality have become an indispensable part.
[0003] With the rapid advancement of technology, the application range of electronic devices equipped with optical lenses has become wider and wider, and the requirements for optical lenses have also become more diverse. Because existing optical lenses are difficult to strike a balance between image quality, sensitivity, aperture size, size, or viewing angle, the present invention provides an optical lens to meet these requirements. Summary of the Invention
[0004] The present invention provides an optical image capture lens assembly, an imaging device, and an electronic device. The optical image capture lens assembly has a focusing function and includes a turning group and a lens group sequentially arranged along the optical path from the object side to the image side. When certain conditions are met, the optical image capture lens assembly provided by the present invention can simultaneously meet the requirements of miniaturization and high imaging quality.
[0005] The present invention provides an optical image capture lens assembly having a focusing function. The optical image capture lens assembly includes a turning group and a lens group in sequence from the object side to the image side along the optical path. The turning group includes a prism having positive refractive power and a convex object-side surface. The prism includes a reflective surface, and the reflective surface is used to reflect an imaging light passing through the object-side surface of the prism onto the image-side surface of the prism. The lens group includes at least three lenses arranged along the optical path, and the at least three lenses each have an object-side surface facing the object side and an image-side surface facing the image side. The lens group includes a moving group, and the moving group moves in a direction parallel to the optical axis during focusing. When the optical image capture lens assembly is focused at a long distance, the distance between the object-side surface of the prism and the image plane on the optical axis is TLi. When the optical image capture lens assembly is focused at a short distance, the distance between the object-side surface of the prism and the image plane on the optical axis is TLm. When the optical image capture lens assembly is focused at a long distance, the focal length of the moving group is fGM. When the optical image capture lens assembly is focused at a long distance, the focal length of the turning group is fGR. When the optical image capture lens assembly is focused at a long distance, the distance between the most object-side surface of the turning group and the most image-side surface of the turning group on the optical axis is DGR. When the optical image capture lens assembly is adjusted from focusing at a long distance to focusing at a short distance, the change in the distance between the moving group and the image plane on the optical axis is dTGM, which satisfies the following conditions:
[0006] |TLi-TLm| / TLi<3.0E-3; and
[0007] 1.0 <fGM×DGR / (fGR×dTGM)<30。
[0008] The present invention further provides an optical image capture lens assembly having a focusing function. The optical image capture lens assembly includes a turning group and a lens group in sequence from the object side to the image side along the optical path. The turning group includes a prism having positive refractive power, and the object-side surface of the prism is convex. The prism includes a reflective surface, and the reflective surface is used to reflect an imaging light passing through the object-side surface of the prism to the image-side surface of the prism. The lens group includes at least three lenses arranged along the optical path, and the at least three lenses respectively have an object-side surface facing the object side and an image-side surface facing the image side. The lens group includes a moving group, and the moving group moves in a direction parallel to the optical axis during the focusing process, wherein no other lenses are interposed between the moving group and the imaging surface of the optical image capture lens assembly. When the optical image capture lens assembly is focused at a long distance, the distance from the object-side surface of the prism to the image plane on the optical axis is TLi. When the optical image capture lens assembly is focused at a short distance, the distance from the object-side surface of the prism to the image plane on the optical axis is TLm. When the optical image capture lens assembly is focused at a long distance, the focal length of the turning group is fGR. When the optical image capture lens assembly is focused at a long distance, the distance from the most object-side surface of the turning group to the most image-side surface of the turning group on the optical axis is DGR, which satisfies the following conditions:
[0009] |TLi-TLm| / TLi<3.0E-3; and
[0010] 0 <fGR / DGR<65.0。
[0011] The present invention further provides an optical image capture lens assembly having a focusing function. The optical image capture lens assembly includes a turning group and a lens group in sequence from the object side to the image side along the optical path. The turning group includes a prism, the object side surface of the prism is convex, and the prism is made of a single material within its optically effective area. The prism includes a reflective surface, and the reflective surface is used to reflect an imaging light passing through the object side surface of the prism to the image side surface of the prism. The lens group includes at least three lenses arranged along the optical path, and the at least three lenses each have an object side surface facing the object side and an image side surface facing the image side. The lens group includes a moving group, and the moving group moves in a direction parallel to the optical axis during the focusing process. When the optical image capture lens assembly is focused at a long distance, the distance from the object-side surface of the prism to an image plane on the optical axis is TLi. When the optical image capture lens assembly is focused at a short distance, the distance from the object-side surface of the prism to the image plane on the optical axis is TLm. When the optical image capture lens assembly is focused at a long distance, the focal length of the moving group is fGM. When the optical image capture lens assembly is adjusted from focusing at a long distance to focusing at a short distance, the change in the distance between the moving group and the image plane on the optical axis is dTGM, which satisfies the following conditions:
[0012] |TLi-TLm| / TLi<3.0E-3; and
[0013] 1.00 <fGM / dTGM。
[0014] The present invention provides an imaging device, which includes the aforementioned optical image capturing lens assembly and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the optical image capturing lens assembly.
[0015] The present invention provides an electronic device comprising at least two imaging devices, both located on the same side of the electronic device. The at least two imaging devices include a first imaging device and a second imaging device. The first imaging device includes the aforementioned optical image capture lens assembly and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the optical image capture lens assembly. The second imaging device includes an optical lens assembly and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the optical lens assembly. Half of the maximum viewing angle of the second imaging device is between 30 and 60 degrees.
[0016] When |TLi-TLm| / TLi satisfies the above conditions, the component configuration of the optical image capture lens assembly can be adjusted to help reduce the volume and improve the imaging quality.
[0017] When fGM×DGR / (fGR×dTGM) satisfies the above conditions, the turning group and the moving group can cooperate with each other to provide stable image quality during the focusing process.
[0018] When fGR / DGR meets the above conditions, the configuration of the turning group can be adjusted to give the optical image capture lens group a telephoto characteristic and help compress the volume.
[0019] When fGM / dTGM meets the above conditions, the actuation mode of the moving group can be adjusted to provide stable image quality during the focusing process.
[0020] The above description of the content of the present invention and the following description of the embodiments are intended to demonstrate and explain the spirit and principles of the present invention, and to provide further explanation of the claims of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 FIG. 1 is a schematic diagram illustrating an imaging device focused at a long distance according to a first embodiment of the present invention.
[0022] Figure 2 FIG. 1 is a schematic diagram illustrating the imaging device according to the first embodiment of the present invention focusing at an object distance of 1 meter.
[0023] Figure 3FIG. 1 is a schematic diagram illustrating the imaging device according to the first embodiment of the present invention focusing at an object distance of 0.5 meters.
[0024] Figure 4 From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device of the first embodiment when focusing at a long distance.
[0025] Figure 5 From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device of the first embodiment when the imaging device is focused at an object distance of 1 meter.
[0026] Figure 6 From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device of the first embodiment when focusing at an object distance of 0.5 meters.
[0027] Figure 7 FIG. 1 is a schematic diagram illustrating an imaging device focused at a long distance according to a second embodiment of the present invention.
[0028] Figure 8 FIG. 1 is a schematic diagram illustrating an imaging device according to a second embodiment of the present invention focusing at an object distance of 1 meter.
[0029] Figure 9 FIG. 1 is a schematic diagram illustrating an imaging device according to a second embodiment of the present invention focusing at an object distance of 0.5 meters.
[0030] Figure 10 From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the second embodiment when focusing at a long distance.
[0031] Figure 11 From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device of the second embodiment when the imaging device is focused at an object distance of 1 meter.
[0032] Figure 12 From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device of the second embodiment when focusing at an object distance of 0.5 meters.
[0033] Figure 13 FIG. 1 is a schematic diagram illustrating an imaging device focused at a long distance according to a third embodiment of the present invention.
[0034] Figure 14 FIG. 1 is a schematic diagram illustrating an imaging device according to a third embodiment of the present invention focusing at an object distance of 1 meter.
[0035] Figure 15 FIG. 1 is a schematic diagram illustrating an imaging device according to a third embodiment of the present invention focusing at an object distance of 0.5 meters.
[0036] Figure 16From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device of the third embodiment when focusing at a long distance.
[0037] Figure 17 From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device of the third embodiment when the imaging device is focused at an object distance of 1 meter.
[0038] Figure 18 From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device of the third embodiment when focusing at an object distance of 0.5 meters.
[0039] Figure 19 FIG. 1 is a schematic diagram illustrating an imaging device focused at a long distance according to a fourth embodiment of the present invention.
[0040] Figure 20 FIG. 1 is a schematic diagram illustrating an imaging device according to a fourth embodiment of the present invention focusing at an object distance of 1 meter.
[0041] Figure 21 From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device of the fourth embodiment when focusing at a long distance.
[0042] Figure 22 From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device of the fourth embodiment when focusing at an object distance of 1 meter.
[0043] Figure 23 A schematic three-dimensional diagram of one side of an electronic device according to a fifth embodiment of the present invention is shown.
[0044] Figure 24 Draw Figure 23 A three-dimensional schematic diagram of the other side of the electronic device.
[0045] Figure 25 Draw Figure 23 A cross-sectional schematic diagram of two imaging devices in an electronic device.
[0046] Figure 26 A schematic three-dimensional diagram of one side of an electronic device according to a sixth embodiment of the present invention is shown.
[0047] Figure 27 FIG. 1 is a schematic diagram illustrating parameters T1i, T2i, T3i, DGL, DGM, Yf1f, Yr1r, and YGRf according to the first embodiment of the present invention when the imaging device is focused at a long distance.
[0048] Figure 28 FIG. 1 is a schematic diagram illustrating parameters T1m, T3m, and dTGM as well as the inflection points of each lens according to the first embodiment of the present invention, and when the imaging device is focused at an object distance of 1 meter.
[0049] Figure 29 A schematic diagram illustrating a configuration relationship of the light path turning element in the optical image capturing lens assembly according to the present invention is shown.
[0050] Figure 30 FIG. 4 is a schematic diagram illustrating another configuration relationship of the light path turning element in the optical image capturing lens assembly according to the present invention.
[0051] Figure 31 A schematic diagram illustrating a configuration relationship of two optical path turning elements in an optical image capturing lens assembly according to the present invention is shown.
[0052] Figure 32 A schematic diagram illustrating the disposition relationship among the turning group, the lens group, and the moving group in an optical image capturing lens assembly according to an embodiment of the present invention is shown.
[0053] Figure 33 A schematic diagram illustrating the disposition relationship among the turning group, the lens group, and the moving group in an optical image capturing lens assembly according to another embodiment of the present invention is shown.
[0054] Figure 34 A schematic diagram illustrating the disposition relationship among the turning group, the lens group, and the moving group in an optical image capturing lens assembly according to another embodiment of the present invention is shown.
[0055]
Explanation of symbols
[0056] 1, 2, 3, 4, 100, 100a, 100b, 100c, 100d, 100e, 100f, 100g, 100h, 100i, 100j, 100k, 100m, 100n, 100p…imaging device
[0057] 200, 300...electronic devices
[0058] 201, 301…Flash module
[0059] 202…Display device
[0060] IM…Imaging Surface
[0061] OA1…First optical axis
[0062] OA2…Second optical axis
[0063] OA3…Third optical axis
[0064] LF…Optical path turning element
[0065] LF1…First optical path turning element
[0066] LF2…Second optical path turning element
[0067] LG... lens group
[0068] ST…Aperture
[0069] S1, S2… aperture
[0070] E1…First lens
[0071] E2…Second lens
[0072] E3…Third lens
[0073] E4…the fourth lens
[0074] E5…Fifth lens
[0075] E6…the sixth lens
[0076] E7…Prism
[0077] E8...Filter element
[0078] GL…Lens Group
[0079] GM…Mobile Group
[0080] GR…Turning Group
[0081] IMG…imaging surface
[0082] IS…electronic photosensitive element
[0083] Lf1…the lens closest to the object side
[0084] Lf1f…the object side surface of the lens most on the object side (the object side surface of the lens group most on the object side)
[0085] Lf2…The second lens from the object side
[0086] Lr1…most like side lens
[0087] Lr1r…Image side surface of the lens on the most image side (the most image side surface of the lens group)
[0088] GMf…Mobile group most side surface
[0089] GRf…prism object side surface
[0090] GRr… The moving group is most like the side surface
[0091] P…inflection point
[0092] RS…Reflective surface
[0093] DGL…The distance on the optical axis from the most object-side surface of the lens group to the most image-side surface of the lens group when the optical image capture lens group is focused at a long distance.
[0094] DGM…The distance on the optical axis from the object-side surface of the moving group to the image-side surface of the moving group when the optical image capture lens group focuses on a long distance.
[0095] dTGM… The variation of the distance between the moving group and the imaging surface on the optical axis during the process of the optical image capture lens group adjusting from focusing on a long distance to focusing on a short distance
[0096] T1i… The distance from the object-side surface of the prism to the reflecting surface on the optical axis
[0097] T2i… The distance from the reflecting surface to the image-side surface of the prism on the optical axis
[0098] T3i… The distance from the reflecting surface to the imaging surface on the optical axis
[0099] T1m… The distance from the object-side surface of the prism to the reflecting surface on the optical axis
[0100] T3m… The distance from the reflecting surface to the imaging surface on the optical axis
[0101] [[ID=… The maximum distance between the optical effective area of the object-side surface of the outermost object-side lens of the lens group and the optical axis when the optical image capture lens group is focused on a long distance
[0102] Yr1r… The maximum distance between the optical effective area of the image-side surface of the outermost image-side lens of the lens group and the optical axis when the optical image capture lens group is focused on a long distance
[0103] YGRf… The maximum distance between the optical effective area of the outermost object-side surface of the turning group and the optical axis when the optical image capture lens group is focused on a long distance Detailed implementation manners
[0104] The optical image capture lens group sequentially includes a turning group and a lens group along the optical path from the object side to the image side. Thereby, the spatial configuration can be adjusted, and the mechanical limitations can be reduced to improve the image quality.
[0105] The turning group includes a prism. The prism includes a reflecting surface, and the reflecting surface is used to reflect the imaging light passing through the object-side surface of the prism to the image-side surface of the prism; thereby, using the prism as a turning element helps to reduce the assembly difficulty of the optical image capture lens group. The object-side surface of the prism is a convex surface; thereby, the direction of the light entering the optical image capture lens group can be adjusted, which helps to increase the aperture and improve the image quality. The prism can have a positive refractive power; thereby, it helps to compress the volume of the optical image capture lens group and improve the image quality. The prism can be of a single material within the range of its optical effective area; thereby, the manufacturing process can be simplified, which helps to improve the manufacturing speed. The prism can be made of a plastic material; thereby, it helps to improve the manufacturing speed and helps to reduce the manufacturing difficulty of the prism with a curved surface. Among them, the Abbe number of the prism is Vp, and the refractive index of the prism is Np, which can satisfy the following conditions: 30.0 < Vp / Np < 40.0; thereby, the material of the prism can be adjusted to improve the forming qualification rate. Among them, the following conditions can also be satisfied: 35.0 < Vp / Np < 38.0.
[0106] The lens group includes at least three lenses arranged along the optical path, each lens having an object-side surface facing the object side and an image-side surface facing the image side, thereby providing sufficient lens variation to improve image quality. The lens group may also include at least four lenses arranged along the optical path. The lens group includes a moving group, and the moving group moves in a direction parallel to the optical axis during focusing, thereby helping to reduce the size of the mechanism. No other lenses may be interposed between the moving group and the imaging surface of the optical image capture lens assembly, thereby simplifying the complexity of the mechanism. The lenses in the moving group may not move relative to each other during focusing, thereby simplifying the complexity of the mechanism. At least one lens in the lens group may be made of plastic, thereby improving mass production capabilities and reducing weight. At least two lenses in the lens group may also be made of plastic. At least three lenses in the lens group may also be made of plastic. There may be at least one lens in the lens group, at least one of whose object side surface and image side surface has at least one inflection point; thereby, the change of the lens surface shape can be increased to compress the volume of the optical image capture lens group and improve the image quality. Among them, there may also be at least two lenses in the lens group, each of whose object side surface and image side surface has at least one inflection point. Among them, there may also be at least three lenses in the lens group, each of whose object side surface and image side surface has at least one inflection point. The lens group may include other lenses in addition to the moving group; thereby, the moving space of the moving group can be more sufficient, and it helps to reduce the size of the prism. The total number of lenses in the moving group can be one; thereby, the refractive power and movement mode of the moving group are less restricted, which helps to improve the image quality. The moving group can have positive refractive power; thereby, it helps to reduce the volume of the mechanism. Please refer to Figure 28 , is a schematic diagram illustrating the inflection points P of each lens according to the first embodiment of the present invention.
[0107] The optical image capture lens assembly disclosed in the present invention has a focus adjustment function, that is, the focal length of the optical image capture lens assembly is adjustable, and by adjusting the focal length to correspond to different object distances, the application range can be expanded. Figure 1 、 Figure 2 and Figure 3 , schematically illustrating the optical image capture lens assembly in an imaging device according to the first embodiment of the present invention when focused at a far distance, at an object distance of 1 meter, and at an object distance of 0.5 meters. In the following description, the term "far distance" may refer to an object distance of infinity, and the term "near distance" may refer to an object distance of 1 meter, but the present invention is not limited to these object distances. When the object distance is significantly greater than the focal length of the optical image capture lens assembly and the incident light within the same field of view is approximately parallel, the object distance is considered infinite.
[0108] The optical image capture lens assembly disclosed in the present invention may have an optical image stabilization function, and some of its components may be driven by a driving device to instantly compensate for image tilt, thereby expanding the scope of application. The moving group may be driven by the driving device to have a tilt or a movement perpendicular to the optical axis, thereby reducing the number of movable components and helping to improve the pass rate. The electronic photosensitive element may also be driven by the driving device to have a tilt or a movement perpendicular to the optical axis, thereby reducing the complexity of the action during focusing and compensation, helping to simplify the complexity of the mechanism and improve image quality. The prism may also be driven by the driving device to have a tilt, thereby increasing the adjustability of the prism and helping to improve the optical image stabilization effect. The present invention is not limited to the driving method disclosed above.
[0109] At least one element in the optical image capture lens assembly may have a non-circular optical effective area, thereby helping to reduce the volume and adapt to a wider range of applications.
[0110] The object-side lens of the lens group (i.e., the first lens in the lens group from the object side) can have positive refractive power; thereby, the refractive power configuration of the optical image capture lens group can be adjusted, which helps to reduce the volume. The object-side surface of the lens group near the optical axis can be convex; thereby, the direction of light propagation can be adjusted, which helps to reduce the outer diameter of the lens group. Please refer to Figure 27 , which is a schematic diagram illustrating the object-side lens Lf1 and its object-side surface Lf1f of the lens group GL according to the first embodiment of the present invention.
[0111] The second lens from the object side of the lens group can have negative refractive power. This can be used in conjunction with the lens closest to the object side to correct aberrations such as spherical aberration. Figure 27 , is a schematic diagram illustrating the second lens Lf2 from the object side of the lens group GL according to the first embodiment of the present invention.
[0112] When the optical image capture lens group focuses at a long distance, the distance from the object side surface of the prism to the imaging plane on the optical axis is TLi. When the optical image capture lens group focuses at a close distance, the distance from the object side surface of the prism to the imaging plane on the optical axis is TLm, which satisfies the following condition: |TLi-TLm| / TLi<3.0E-3. Thus, the component configuration of the optical image capture lens group can be adjusted, which helps to reduce the volume and improve the imaging quality. Among them, the following condition can also be satisfied: |TLi-TLm| / TLi<1.0E-3. Among them, the following condition can also be satisfied: |TLi-TLm| / TLi<3.0E-4. Among them, the following condition can also be satisfied: |TLi-TLm| / TLi<1.0E-4. Please refer to Figure 27 and Figure 28 ,in Figure 27 A schematic diagram is shown of the parameters T1i and T3i according to the first embodiment of the present invention and the imaging device is focused at a long distance. Figure 28 A schematic diagram showing parameters T1m and T3m in the first embodiment of the present invention and the imaging device focused on an object distance of 1 meter. As Figure 27 shown, when the imaging device is focused on a long distance, the distance from the object-side surface GRf of the prism to the reflecting surface RS on the optical axis is T1i, and the distance from the reflecting surface RS to the imaging surface IMG on the optical axis is T3i, where the aforementioned parameter TLi is the sum of T1i and T3i (i.e., TLi = T1i + T3i). As Figure 28 shown, when the imaging device is focused on a short distance, the distance from the object-side surface GRf of the prism to the reflecting surface RS on the optical axis is T1m, and the distance from the reflecting surface RS to the imaging surface IMG on the optical axis is T3m, where the aforementioned parameter TLm is the sum of T1m and T3m (i.e., TLm = T1m + T3m).
[0113] When the optical image capturing lens group is focused on a long distance, the focal length of the moving group is fGM, the focal length of the turning group when the optical image capturing lens group is focused on a long distance is fGR, the distance from the most object-side surface to the most image-side surface of the turning group on the optical axis when the optical image capturing lens group is focused on a long distance is DGR, and the change amount of the distance between the moving group and the imaging surface on the optical axis during the process of the optical image capturing lens group adjusting from focusing on a long distance to focusing on a short distance is dTGM, which can satisfy the following conditions: 1.0 < fGM × DGR / (fGR × dTGM) < 30. Thereby, the turning group and the moving group can cooperate with each other to provide stable image quality during the focusing process. Among them, the following conditions can also be satisfied: 2.0 < fGM × DGR / (fGR × dTGM) < 27. Among them, the following conditions can also be satisfied: 4.0 < fGM × DGR / (fGR × dTGM) < 25. Please refer to Figure 27 and Figure 28 where Figure 27 a schematic diagram showing parameters T1i and T2i in the first embodiment of the present invention and the imaging device focused on a long distance is shown, and Figure 28 a schematic diagram showing parameter dTGM in the first embodiment of the present invention and the imaging device focused on an object distance of 1 meter is shown. As Figure 27 shown, when the imaging device is focused on a long distance, the distance from the object-side surface GRf of the prism to the reflecting surface RS on the optical axis is T1i, and the distance from the reflecting surface RS to the image-side surface GRr of the prism on the optical axis is T2i, where the aforementioned parameter DGR is the sum of T1i and T2i (i.e., DGR = T1i + T2i). As Figure 28 shown, during the process of the optical image capturing lens group adjusting from focusing on a long distance to focusing on a short distance, the moving group GM moves towards the object side along a direction parallel to the optical axis (i.e., Figure 28 in Figure 28 The dTGM is positive. The focal length of the moving group refers to the combined focal length of all the lenses in the moving group. The object-side extreme refers to the position closest to the object along the optical axis, and the image-side extreme refers to the position closest to the imaging surface along the optical axis.
[0114] When the optical image capture lens group is focused on a distant object, the focal length of the turning group is fGR, and the distance on the optical axis from the object-side extreme surface to the image-side extreme surface of the turning group is DGR, which satisfies the following condition: 0 < fGR / DGR < 65.0. Thereby, the configuration of the turning group can be adjusted to endow the optical image capture lens group with the characteristics of a long focal length and help reduce the volume. Among them, the following condition can also be satisfied: 1.00 < fGR / DGR < 30.0. Among them, the following condition can also be satisfied: 1.50 < fGR / DGR < 18.0. Among them, the following condition can also be satisfied: 2.00 < fGR / DGR < 6.50.
[0115] When the optical image capture lens group is focused on a distant object, the focal length of the moving group is fGM, and the change amount of the distance between the moving group and the imaging surface on the optical axis during the process of the optical image capture lens group adjusting from focusing on a distant object to focusing on a near object is dTGM, which satisfies the following condition: 1.00 < fGM / dTGM. Thereby, the actuation mode of the moving group can be adjusted to provide stable image quality during the focusing process. Among them, the following condition can also be satisfied: 5.00 < fGM / dTGM < 500. Among them, the following condition can also be satisfied: 10.0 < fGM / dTGM < 250. Among them, the following condition can also be satisfied: 15.0 < fGM / dTGM < 150.
[0116] When the optical image capture lens group is focused on a distant object, the focal length is fi, and when the optical image capture lens group is focused on a near object, the focal length is fm, which satisfies the following condition: 1.0E-3 < (fi - fm) / fi < 1. OE-1. Thereby, it helps to balance the image quality when the optical image capture lens group is focused on a distant object and a near object. Among them, the following condition can also be satisfied: 2.0E-3 < (fi - fm) / fi < 5.0E-2.
[0117] When the optical image capture lens group is focused on a distant object, the distance on the optical axis from the object-side extreme surface to the image-side extreme surface of the lens group is DGL, and the distance on the optical axis from the object-side extreme surface to the image-side extreme surface of the moving group is DGM, which satisfies the following condition: 1.0 ≤ DGL / DGM < 20. Thereby, the configuration of the moving group in the lens group can be adjusted, which helps to balance between the volume and the image quality during the focusing process. Among them, the following condition can also be satisfied: 2.0 < DGL / DGM < 10. Please refer to Figure 27, which shows a schematic diagram according to the parameters DGL and DGM in the first embodiment of the present invention when the imaging device is focused on a long distance. The distance on the optical axis from the frontmost surface Lf1f of the lens group to the rearmost surface Lr1r of the lens group is DGL, and the distance on the optical axis from the frontmost surface GMf of the moving group to the rearmost surface Lr1r of the moving group is DGM.
[0118] When the optical image capturing lens group is focused on a long distance, the distance on the optical axis from the object side surface of the prism to the imaging surface is TLi, and the focal length when the optical image capturing lens group is focused on a long distance is fi, which can satisfy the following condition: 0.60 < TLi / fi < 2.0. Thereby, a balance can be achieved among the depth of field, the viewing angle, and the total length.
[0119] When the optical image capturing lens group is focused on a long distance, the distance on the optical axis from the object side surface of the prism to the imaging surface is TLi, and the maximum imaging height when the optical image capturing lens group is focused on a long distance is ImgHi (which can be half of the total diagonal length of the effective sensing area of the electronic photosensitive element), which can satisfy the following condition: 4.0 < TLi / ImgHi < 10. Thereby, the volume configuration of the optical image capturing lens group can be adjusted, which helps to adjust the viewing angle and the size of the imaging surface.
[0120] The radius of curvature of the frontmost surface of the turning group at the near optical axis is RGRf, and the focal length of the turning group when the optical image capturing lens group is focused on a long distance is fGR, which can satisfy the following condition: 0.35 < RGRf / fGR < 2.0. Thereby, the configuration of the turning group can be adjusted to correct aberration.
[0121] The focal length of the turning group when the optical image capturing lens group is focused on a long distance is fGR, and the focal length of the frontmost lens of the lens group is ff1, which can satisfy the following condition: 1.8 < fGR / ff1 < 10. Thereby, the turning group and the lens group can cooperate with each other, which helps to compress the volume and correct aberration. Among them, the following condition can also be satisfied: 2.2 < fGR / ff1 < 7.5.
[0122] The refractive index of the prism is Np, and the refractive index of the frontmost lens of the lens group is Nf1, which can satisfy the following condition: |(Np - Nf1) / (Nf1 - 1.5)| < 1.2. Thereby, the material distribution of the optical image capturing lens group can be adjusted, which helps to compress the volume and improve the image quality. Among them, the following condition can also be satisfied: |(Np - Nf1) / (Nf1 - 1.5)| < 0.65.
[0123] When the optical image capturing lens group is focused on a long distance, the focal length of the moving group is fGM, and the distance on the optical axis from the most object-side surface to the most image-side surface of the moving group is DGM. The following conditions can be satisfied: 1.5 < |fGM / DGM| < 30. Thereby, the configuration of the moving group can be adjusted to reduce the travel of the moving group during the focusing process. Among them, the following conditions can also be satisfied: 2.0 < |fGM / DGM| < 20.
[0124] When the optical image capturing lens group is focused on a long distance, the focal length is fi, and the focal length of the turning group is fGR. The following conditions can be satisfied: 0.75 < fGR / fi < 6.5. Thereby, the refractive power of the turning group can be adjusted, which helps to compress the volume of the turning group and reduce aberrations such as spherical aberration. Among them, the following conditions can also be satisfied: 1.0 < fGR / fi < 3.5.
[0125] When the optical image capturing lens group is focused on a long distance, the focal length is fi, the focal length of the turning group is fGR, and the focal length of the lens group is fGL. The following conditions can be satisfied: 0.50 < fi / fGR + fi / fGL < 1.4. Thereby, the refractive power configuration can be adjusted, which helps to reduce sensitivity and form a long focal length configuration. The focal length of the lens group refers to the combined focal length of all the lenses in the lens group.
[0126] When the optical image capturing lens group is focused on a long distance, the maximum distance between the optical effective area of the object-side surface of the most object-side lens of the lens group and the optical axis is Yf1f, and the maximum distance between the optical effective area of the image-side surface of the most image-side lens of the lens group and the optical axis is Yr1r. The following conditions can be satisfied: 0.50 < Yf1f / Yr1r < 2.0. Thereby, the traveling direction of the light can be adjusted, which helps to compress the outer diameter of the optical image capturing lens group and form a long focal length configuration. Among them, the following conditions can also be satisfied: 0.60 < Yf1f / Yr1r < 1.6. Please refer to Figure 27 , which shows a schematic diagram of the parameters Yf1f, Yr1r, the most object-side lens Lf1 and its object-side surface Lf1f, the most image-side lens Lr1 and its image-side surface Lr1r in the first embodiment of the present invention when the imaging device is focused on a long distance.
[0127] When the optical image capture lens group is focused on a distant object, the maximum distance between the optical effective area of the surface of the reversion group closest to the object side and the optical axis is YGRf, and when the optical image capture lens group is focused on a distant object, the maximum distance between the optical effective area of the object side surface of the lens closest to the object side of the lens group and the optical axis is Yf1f, which can satisfy the following condition: 0.70 < YGRf / Yf1f < 2.0. Thereby, the reversion group and the lens group can cooperate with each other, which helps to increase the aperture. Among them, the following condition can also be satisfied: 0.90 < YGRf / Yf1f < 1.8. Please refer to Figure 27 , which shows a schematic diagram when the imaging device is focused on a distant object according to the parameter YGRf in the first embodiment of the present invention.
[0128] The radius of curvature of the object side surface of the lens closest to the object side of the lens group at the near optical axis is Rf1f, and the focal length of the lens closest to the object side of the lens group is ff1, which can satisfy the following condition: 0.30 < Rf1f / ff1 < 1.2. Thereby, the surface shape and refractive power of the lens closest to the object side can be adjusted, which helps to compress the volume and correct the aberration.
[0129] Half of the maximum viewing angle when the optical image capture lens group is focused on a distant object is HFOVi, which can satisfy the following condition: 3.0 degrees < HFOVi < 20.0 degrees. Thereby, the viewing angle when the optical image capture lens group is focused on a distant object can be adjusted to cooperate with the application and provide telescopic characteristics. Among them, the following condition can also be satisfied: 5.0 degrees < HFOVi < 15.0 degrees.
[0130] The focal length when the optical image capture lens group is focused on a distant object is fi, and the maximum distance between the optical effective area of the surface of the reversion group closest to the object side and the optical axis when the optical image capture lens group is focused on a distant object is YGRf, which can satisfy the following condition: 3.0 < fi / YGRf < 8.0. Thereby, the configuration of the optical image capture lens group can be adjusted, which helps to increase the aperture. Among them, the following condition can also be satisfied: 3.5 < fi / YGRf < 7.0.
[0131] The minimum Abbe number among all the lenses of the lens group is Vmin, and the maximum refractive index among all the lenses of the lens group is Nmax, which can satisfy the following condition: 5.50 < Vmin / Nmax < 12.0. Thereby, the material distribution of the lenses in the optical image capture lens group can be adjusted to compress the volume and correct the aberration.
[0132] When the optical image capturing lens group is focused on a distant object, the distance on the optical axis from the most object-side surface of the turning group to the most image-side surface of the turning group is DGR, and the distance on the optical axis from the most object-side surface of the lens group to the most image-side surface of the lens group when the optical image capturing lens group is focused on a distant object is DGL, which satisfies the following condition: 0.30 < DGR / DGL < 2.0. Thereby, the turning group and the lens group can cooperate with each other, which helps to compress the volumes of the turning group and the lens group. Among them, the following condition can also be satisfied: 0.50 < DGR / DGL < 1.4.
[0133] When the optical image capturing lens group is focused on a distant object, the focal length is fi, and the focal length of the moving group when the optical image capturing lens group is focused on a distant object is fGM, which satisfies the following condition: 0.20 < |fi / fGM| < 3.5. Thereby, the refractive power of the moving group can be adjusted to reduce the actuation of the moving group and the image quality during the balancing focusing process. Among them, the following condition can also be satisfied: 0.30 < |fi / fGM| < 2.5.
[0134] When the optical image capturing lens group is focused on a distant object, the focal length of the turning group is fGR, and the maximum distance between the optical effective area of the most object-side surface of the turning group and the optical axis is YGRf when the optical image capturing lens group is focused on a distant object, which satisfies the following condition: 4.0 < fGR / YGRf < 30. Thereby, the configuration of the turning group can be adjusted, which helps to compress the volume and increase the aperture. Among them, the following condition can also be satisfied: 7.0 < fGR / YGRf < 20.
[0135] The focal length of the most object-side lens of the lens group is ff1, and the focal length of the second lens counted from the object side in the lens group is ff2, which satisfies the following condition: -10 < ff2 / ff1 < -0.70. Thereby, the refractive power configuration in the lens group can be adjusted to correct aberration. Please refer to Figure 27 , which shows a schematic diagram of the most object-side lens Lf1 and the second lens Lf2 counted from the object side of the lens group GL in the first embodiment of the present invention.
[0136] Each of the above technical features in the optical image capturing lens group of the present invention can be combined and configured to achieve the corresponding effects.
[0137] In the optical image capture lens set disclosed in the present invention, the material of the lens can be glass or plastic. If the material of the lens is glass, the degree of freedom of the refractive power configuration of the optical image capture lens set can be increased, and the influence of the external ambient temperature change on the imaging can be reduced, and the glass lens can be made using techniques such as grinding or molding. If the material of the lens is plastic, the production cost can be effectively reduced. In addition, a spherical surface (SPH) or an aspherical surface (ASP) can be set on the mirror surface, wherein the spherical lens can reduce the manufacturing difficulty, and if the aspherical surface is set on the mirror surface, more control variables can be obtained to eliminate aberrations, reduce the number of lenses, and effectively reduce the total length of the optical image capture lens set of the present invention. Furthermore, the aspherical surface can be made by methods such as plastic injection molding or molded glass lenses.
[0138] In the optical image capture lens assembly disclosed in the present invention, if the lens surface is aspherical, it means that the entire or a portion of the optically effective area of the lens surface is aspherical.
[0139] Unless otherwise specified, the parameters and states of the optical image capture lens assembly disclosed herein may refer to calculations performed when the optical image capture lens assembly is focused at a long distance, where the long distance may refer to the maximum object distance within the applicable range. When describing the optical image capture lens assembly as focused at a close distance, the parameters and states of the optical image capture lens assembly may refer to calculations performed with an object distance of 1 meter. In the following embodiments, long distances are calculated with an object distance of infinite distance. Furthermore, close distances are calculated with an object distance of 1 meter. However, the present invention is not limited to the aforementioned object distances. The optical image capture lens assembly in each embodiment of the present invention can be adjusted to focus on objects at different object distances based on actual usage requirements.
[0140] In the optical image capture lens assembly disclosed herein, additives can be selectively added to any one (or more) of the lens materials to produce light absorption or light interference effects, thereby changing the lens's transmittance for light in specific wavelengths, thereby reducing stray light and color shift. For example, the additive can filter out light in the 600- to 800-nanometer wavelength range in the system to help reduce excess red or infrared light; or it can filter out light in the 350- to 450-nanometer wavelength range to reduce excess blue or ultraviolet light. Thus, the additive can prevent light in specific wavelengths from interfering with imaging. Furthermore, the additive can be uniformly mixed into plastic and fabricated into a lens using injection molding technology. Furthermore, the additive can also be applied as a coating on the lens surface to provide the aforementioned effects.
[0141] In the optical image capture lens assembly disclosed herein, if the lens surface is convex and the position of the convex surface is undefined, it means that the convex surface may be located near the optical axis of the lens surface; if the lens surface is concave and the position of the concave surface is undefined, it means that the concave surface may 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 area, it means that the refractive power or focal length of the lens may be the refractive power or focal length of the lens at the near optical axis.
[0142] In the optical image capture lens assembly disclosed in the present invention, the inflection point of the lens surface refers to the intersection point where the curvature of the lens surface changes from positive to negative.
[0143] In the optical image capturing lens assembly disclosed in the present invention, the imaging surface of the optical image capturing lens assembly can be a plane or a curved surface with any curvature, particularly a curved surface with a concave surface facing the object side, depending on the corresponding electronic photosensitive element.
[0144] In the optical image capture lens assembly disclosed herein, one or more image correction elements (such as flattening elements) can be optionally positioned between the lens closest to the imaging surface and the imaging surface in the imaging optical path to achieve image correction effects (such as image curvature). The optical properties of these image correction elements, such as curvature, thickness, refractive index, position, and surface type (convex or concave, spherical or aspherical, diffractive, Fresnel, etc.), can be adjusted to suit the requirements of the imaging device. Generally speaking, a preferred image correction element configuration is a thin plano-concave element with a concave surface facing the object side, positioned near the imaging surface.
[0145] In the optical image capture lens assembly disclosed in the present invention, at least one element capable of deflecting the optical path, such as a prism or a reflector, can be selectively disposed between the object and the imaging surface on the imaging optical path to provide a more flexible spatial configuration of the optical image capture lens assembly, thereby enabling the thinning and lightening of the electronic device without being restricted by the total optical length of the optical image capture lens assembly. For further explanation, please refer to Figure 29 and Figure 30 ,in Figure 29 The figure shows a configuration diagram of the optical path turning element in the optical image capturing lens assembly according to the present invention, and Figure 30 FIG. 1 is a schematic diagram illustrating another configuration relationship of the optical path turning element in the optical image capturing lens assembly according to the present invention. Figure 29 and Figure 30 As shown, the optical image capture lens group can be arranged along the optical path from the object (not shown) to the imaging surface IM, and sequentially has a first optical axis OA1, an optical path turning element LF and a second optical axis OA2, wherein the optical path turning element LF can be as shown. Figure 29 The lens group LG is set between the object and the optical image capture lens group, or as shown in FIG. Figure 30The lens group LG of the optical image capture lens assembly is set between the imaging surface IM. Figure 31 , is a schematic diagram illustrating a configuration relationship of two optical path turning elements in an optical image capturing lens assembly according to the present invention, such as Figure 31 As shown, the optical image capture lens assembly can also be configured along an optical path from a subject (not shown) to an imaging plane IM, sequentially comprising a first optical axis OA1, a first optical path turning element LF1, a second optical axis OA2, a second optical path turning element LF2, and a third optical axis OA3. The first optical path turning element LF1 is disposed between the subject and the lens group LG of the optical image capture lens assembly, and the second optical path turning element LF2 is disposed between the lens group LG of the optical image capture lens assembly and the imaging plane IM. The optical image capture lens assembly can optionally be configured with three or more optical path turning elements, and the present invention is not limited to the type, number, and position of the optical path turning elements disclosed in the drawings.
[0146] The optical image capture lens assembly disclosed in the present invention may include at least one aperture stop, which may be located before the first lens, between each lens, or after the last lens. The aperture stop may be a glare stop or a field stop, etc., and can be used to reduce stray light, thereby improving image quality.
[0147] In the optical image capture lens assembly disclosed herein, the aperture can be configured as either a front aperture or a center aperture. A front aperture means it's positioned between the subject and the first lens element, while a center aperture means it's positioned between the first lens element and the imaging plane. A front aperture creates a longer distance between the exit pupil and the imaging plane, creating a telecentric effect and increasing the efficiency of the CCD or CMOS sensor receiving images. A center aperture helps expand the optical image capture lens assembly's field of view.
[0148] The present invention may appropriately include a variable aperture element. This variable aperture element can be a mechanical component or a light-controlling element that controls the size and shape of the aperture electrically or using electrical signals. The mechanical component may include movable parts such as blades or shielding plates; the light-controlling element may include shielding materials such as filters, electrochromic materials, and liquid crystal layers. This 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 the present invention, adjusting image quality, such as depth of field or exposure speed, by varying the aperture value.
[0149] In the optical image capture lens assembly disclosed in the present invention, the object side and image side are determined according to the direction of the optical axis, and the data on the optical axis are calculated along the optical axis. 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. For example, when the optical image capture lens assembly is focused at a distance, the distance DGR on the optical axis from the most object-side surface of the deflection group to the most image-side surface of the deflection group is Figure 27 The sum of T1i and T2i in DGR (i.e., DGR = T1i + T2i) is calculated along the optical axis. Similar data also includes parameters such as TLi (the distance from the object-side surface of the prism to the image plane on the optical axis when the optical image capture lens assembly is focused at a long distance) and TLm (the distance from the object-side surface of the prism to the image plane on the optical axis when the optical image capture lens assembly is focused at a close distance).
[0150] In the optical image capture lens assembly disclosed in the present invention, the relative configurations of the turning group, lens group, and moving group can be adjusted according to actual needs, and are not limited to the configurations disclosed in the drawings and the specification. For example, please refer to Figures 32 to 34 ,in Figure 32 A schematic diagram illustrating the arrangement relationship between the turning group, the lens group, and the moving group in an optical image capturing lens assembly according to an embodiment of the present invention is shown. Figure 33 A schematic diagram illustrating the configuration relationship between the turning group, the lens group, and the moving group in an optical image capturing lens assembly according to another embodiment of the present invention is shown, and Figure 34 A schematic diagram illustrating the configuration relationship between the turning group, lens group, and moving group in an optical image capturing lens assembly according to another embodiment of the present invention is shown. Figure 32 As shown, the optical image capture lens assembly includes a turning group GR and a lens group GL in sequence from the object side to the image side along the optical path, wherein the lens group GL includes a moving group GM, the moving group GM includes a fifth lens E5, and the moving group GM moves in a direction parallel to the optical axis during the focusing process. Figure 33 As shown, the optical image capture lens assembly includes a turning group GR and a lens group GL in sequence from the object side to the image side along the optical path, wherein the lens group GL includes a moving group GM, and the moving group GM includes a first lens E1 and a second lens E2, and the moving group GM moves in a direction parallel to the optical axis during the focusing process. Figure 34 As shown, the optical image capture lens assembly includes a turning group GR and a lens group GL in sequence from the object side to the image side along the optical path, wherein the lens group GL includes a moving group GM, and the moving group GM includes a first lens E1, a second lens E2, a third lens E3 and a fourth lens E4. The moving group GM moves in a direction parallel to the optical axis during the focusing process.
[0151] Based on the above implementation manner, specific embodiments are presented below and described in detail with reference to the accompanying drawings.
[0152] <First embodiment>
[0153] Please refer to Figures 1 to 6 ,in Figure 1 FIG2 is a schematic diagram showing an imaging device according to a first embodiment of the present invention focused on a long distance. Figure 2 FIG2 is a schematic diagram showing the imaging device according to the first embodiment of the present invention focusing at an object distance of 1 meter. Figure 3 FIG2 is a schematic diagram showing the imaging device according to the first embodiment of the present invention focusing at an object distance of 0.5 meters. Figure 4 From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device of the first embodiment when focusing at a long distance. Figure 5 From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the first embodiment when the object distance is 1 meter. Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the first embodiment when the object distance is focused at 0.5 meters. Figures 1 to 3 As can be seen, the imaging device 1 includes an optical image capture lens assembly (not otherwise numbered) and an electronic photosensitive element IS. The optical image capture lens assembly includes, in order from the object side to the image side, an aperture ST, a prism E7, a stop S1, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E8, and an imaging surface IMG. The optical image capture lens assembly includes a turning group GR and a lens group GL. The turning group GR includes the prism E7, and the lens group GL includes the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, and the fifth lens E5. The lens group GL includes a moving group GM, which moves parallel to the optical axis during focusing. In this embodiment, the moving group GM comprises only one lens, the fifth lens E5, and has positive refractive power. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical image capture lens group includes five lenses (E1, E2, E3, E4, E5). There are no other lenses interpolated between the lenses, and there are no other lenses interpolated between the moving group GM and the imaging surface IMG.
[0154] During the focusing process of the optical image capturing lens set, the focal length of the optical image capturing lens set is adjusted by moving the moving group GM in a direction parallel to the optical axis. Figures 1 to 3 It can be seen that the moving group GM (fifth lens E5) moves parallel to the optical axis during focusing. For example, when the optical image capture lens assembly is adjusted from focusing at a long distance (object distance of infinity) to focusing at a close distance (object distance of 1 meter), the moving group GM moves parallel to the optical axis toward the object side. Furthermore, when the optical image capture lens assembly is adjusted from focusing at an object distance of 1 meter to focusing at an object distance of 0.5 meters, the moving group GM moves even further parallel to the optical axis toward the object side.
[0155] Prism E7 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is flat, and its object-side surface is aspherical. Prism E7 includes a reflecting surface RS for reflecting imaging light passing through the object-side surface of prism E7 back to the image-side surface of prism E7.
[0156] The first lens E1 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 surfaces are aspherical, and the object-side surface has at least one inflection point.
[0157] 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 surfaces are aspherical, and the object-side surface has at least one inflection point.
[0158] The third lens element E3 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 at least one inflection point, and its image-side surface also has at least one inflection point.
[0159] The fourth lens element 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 surfaces are aspherical. Its object-side surface has at least one inflection point, and its image-side surface also has at least one inflection point.
[0160] The fifth lens element E5 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 surfaces are aspherical, and the object-side surface has at least one inflection point.
[0161] The filter element E8 is made of glass and is disposed between the fifth lens element E5 and the imaging surface IMG, and does not affect the focal length of the optical image capturing lens assembly.
[0162] The curve equations of the aspheric surfaces of the above lenses are expressed as follows:
[0163]
[0164] X: The displacement parallel to the optical axis from the intersection of the aspheric surface and the optical axis to the point on the aspheric surface that is Y away from the optical axis;
[0165] Y: The vertical distance between the point on the aspheric curve and the optical axis;
[0166] R: radius of curvature;
[0167] k: cone coefficient; and
[0168] Ai: i-th order aspheric coefficient.
[0169] In the optical image capture lens assembly of the first embodiment, the focal length of the optical image capture lens assembly is f, the aperture value (F-number) of the optical image capture lens assembly is Fno, half of the maximum angle of view of the optical image capture lens assembly is HFOV, the distance between the object and the aperture ST on the optical axis is D0, the distance between the fourth lens E4 and the fifth lens E5 on the optical axis is D12, and the distance between the fifth lens E5 and the filter element E8 on the optical axis is D14. The values of some of the above optical parameters vary depending on the focusing conditions. The optical image capture lens assembly of this embodiment discloses three aspects depending on the focusing conditions (different object distances). The first aspect of the optical image capture lens assembly is an aspect with the object at infinity in focus, the second aspect is an aspect with the object at 1 meter in focus, and the third aspect is an aspect with the object at 0.5 meters in focus.
[0170] In the first state: f=14.87 mm, Fno=2.86, HFOV=9.1 degrees (deg.), D0=∞ (infinity), D12=1.739 mm, D14=0.213 mm.
[0171] In the second state: f=14.48 mm, Fno=2.82, HFOV=9.2 degrees, D0=1000.000 mm, D12=1.345 mm, D14=0.607 mm.
[0172] In the third state: f=14.15 mm, Fno=2.80, HFOV=9.3 degrees, D0=500.000 mm, D12=0.993 mm, D14=0.959 mm.
[0173] From the above three types of data and Figure 1 and Figure 2 It can be seen that, taking the change in focusing condition from the first state to the second state as an example, the distance on the optical axis between the fifth lens element E5 and the filter element E8 increases from 0.213 mm in the first state to 0.607 mm in the second state. That is, during the focusing process, as the object distance gradually decreases, the moving group GM moves along the optical axis toward the object side.
[0174] This embodiment discloses an optical image capture lens assembly focusing on objects at object distances of infinity, 1 meter, and 0.5 meters for illustrative purposes. However, the present invention is not limited thereto. The optical image capture lens assembly can be adjusted to focus on objects at different object distances based on actual usage requirements. Unless otherwise specified, the term "far distance" in this embodiment refers to an object distance of infinity, and the term "near distance" refers to an object distance of 1 meter.
[0175] The focal length of the optical image capturing lens assembly when focused at a long distance is fi, which satisfies the following condition: fi=14.87 mm.
[0176] The focal length of the optical image capturing lens assembly when focused at a close distance is fm, which satisfies the following condition: fm=14.48 mm.
[0177] When the optical image capturing lens assembly focuses at a long distance, the focal length of the lens group GL is fGL, which satisfies the following condition: fGL=24.89 mm.
[0178] When the optical image capturing lens group focuses at a long distance, the focal length of the moving group GM is fGM, which satisfies the following condition: fGM=10.18 mm.
[0179] When the optical image capturing lens assembly is focused at a long distance, the focal length of the turning group GR is fGR, which satisfies the following condition: fGR=30.38 mm.
[0180] When the optical image capture lens assembly focuses at a long distance, half of its maximum viewing angle is HFOVi, which satisfies the following condition: HFOVi=9.1 degrees.
[0181] When the optical image capture lens system is focused at a long distance, the distance on the optical axis between the most object-side surface of lens group GL and the most image-side surface of lens group GL is DGL, which satisfies the following condition: DGL = 8.321 mm. In this embodiment, the most object-side surface of lens group GL is the object-side surface of first lens element E1, and the most image-side surface of lens group GL is the image-side surface of fifth lens element E5.
[0182] When the optical image capture lens assembly is focused at a long distance, the distance on the optical axis between the most object-side surface of the mobile group GM and the most image-side surface of the mobile group GM is DGM, which satisfies the following condition: DGM = 1.048 mm. In this embodiment, the most object-side surface of the mobile group GM is the object-side surface of the fifth lens element E5, and the most image-side surface of the mobile group GM is the image-side surface of the fifth lens element E5.
[0183] When the optical image capturing lens assembly is focused at a long distance, the distance from the most object-side surface of the turning group GR to the most image-side surface of the turning group GR on the optical axis is DGR, which satisfies the following condition: DGR=6.050 mm.
[0184] The change in the distance between the moving group GM and the imaging plane IMG on the optical axis during the adjustment of the optical image capture lens assembly from focusing on a long distance to focusing on a short distance is dTGM, which satisfies the following condition: dTGM=0.394 mm.
[0185] The refractive index of prism E7 is Np, and the refractive index of the most object-side lens in lens group GL is Nf1, which satisfies the following condition: |(Np-Nf1) / (Nf1-1.5)|=0.25. In this embodiment, the most object-side lens in lens group GL is the first lens E1.
[0186] The minimum Abbe number among all lenses in lens group GL is Vmin, and the maximum refractive index among all lenses in lens group GL is Nmax, which satisfies the following condition: Vmin / Nmax=10.90. In this embodiment, the Abbe numbers of the fourth lens element E4 and the fifth lens element E5 are the same and both are smaller than the Abbe numbers of the remaining lenses. Therefore, Vmin is equal to the Abbe numbers of the fourth lens element E4 and the fifth lens element E5. Furthermore, the refractive index of the fourth lens element E4 and the fifth lens element E5 are the same and both are larger than the refractive index of the remaining lenses. Therefore, Nmax is equal to the refractive index of the fourth lens element E4 and the refractive index of the fifth lens element E5.
[0187] The Abbe number of the prism E7 is Vp, and the refractive index of the prism E7 is Np, which satisfies the following condition: Vp / Np=36.46.
[0188] When the optical image capture lens assembly is focused at a long distance, the distance between the object-side surface of the prism E7 and the imaging surface IMG on the optical axis is TLi. When the optical image capture lens assembly is focused at a short distance, the distance between the object-side surface of the prism E7 and the imaging surface IMG on the optical axis is TLm, which satisfies the following condition: |TLi-TLm| / TLi=0.00E+00.
[0189] When the optical image capture lens group is focused at a long distance, the distance on the optical axis from the most object-side surface of the lens group GL to the most image-side surface of the lens group GL is DGL. When the optical image capture lens group is focused at a long distance, the distance on the optical axis from the most object-side surface of the moving group GM to the most image-side surface of the moving group GM is DGM, which satisfies the following condition: DGL / DGM=7.94.
[0190] When the optical image capture lens group is focused at a long distance, the distance on the optical axis from the most object-side surface of the turning group GR to the most image-side surface of the turning group GR is DGR. When the optical image capture lens group is focused at a long distance, the distance on the optical axis from the most object-side surface of the lens group GL to the most image-side surface of the lens group GL is DGL, which satisfies the following condition: DGR / DGL=0.73.
[0191] When the optical image capturing lens assembly focuses at a long distance, the distance from the object side surface of the prism E7 to the imaging surface IMG on the optical axis is TLi. The focal length of the optical image capturing lens assembly when focused at a long distance is fi, which satisfies the following condition: TLi / fi=1.21.
[0192] When the optical image capture lens assembly is focused at a long distance, the distance from the object-side surface of the prism E7 to the imaging surface IMG on the optical axis is TLi. When the optical image capture lens assembly is focused at a long distance, the maximum imaging height is ImgHi, which satisfies the following condition: TLi / ImgHi=7.50.
[0193] The curvature radius of the object-side surface of the most object-side lens in the lens group GL near the optical axis is Rf1f, and the focal length of the most object-side lens in the lens group GL is ff1, which satisfies the following condition: Rf1f / ff1=0.66.
[0194] The curvature radius of the most object-side surface of the turning group GR at the near optical axis is RGRf. When the optical image capturing lens assembly focuses at a long distance, the focal length of the turning group GR is fGR, which satisfies the following condition: RGRf / fGR=0.53.
[0195] The focal length of the optical image capturing lens group when focusing at a long distance is fi, and the focal length of the optical image capturing lens group when focusing at a short distance is fm, which satisfies the following condition: (fi-fm) / fi=2.64E-02.
[0196] When the optical image capture lens group focuses at a long distance, the focal length of the moving group GM is fGM. When the optical image capture lens group focuses at a long distance, the distance from the most object-side surface of the moving group GM to the most image-side surface of the moving group GM on the optical axis is DGM, which satisfies the following condition: |fGM / DGM|=9.71.
[0197] The focal length of the optical image capturing lens group when focusing at a long distance is fi, and the focal length of the moving group GM when focusing at a long distance is fGM, which satisfies the following condition: |fi / fGM|=1.46.
[0198] The focal length of the lens furthest from the object side in lens group GL is ff1, and the focal length of the second lens in lens group GL from the object side is ff2, satisfying the following condition: ff2 / ff1 = -1.21. In this embodiment, first lens E1 is the lens furthest from the object side in lens group GL, and second lens E2 is the second lens in lens group GL from the object side.
[0199] When the optical image capture lens assembly focuses at a long distance, the focal length of the moving group GM is fGM. When the optical image capture lens assembly focuses at a long distance, the focal length of the turning group GR is fGR. When the optical image capture lens assembly focuses at a long distance, the distance on the optical axis from the most object-side surface of the turning group GR to the most image-side surface of the turning group GR is DGR. When the optical image capture lens assembly adjusts from focusing at a long distance to focusing at a near distance, the change in the distance on the optical axis between the moving group GM and the imaging plane IMG is dTGM, which satisfies the following condition: fGM×DGR / (fGR×dTGM)=5.14.
[0200] When the optical image capture lens group focuses on a long distance, the focal length of the moving group GM is fGM. When the optical image capture lens group adjusts from focusing on a long distance to focusing on a short distance, the change in the distance between the moving group GM and the imaging plane IMG on the optical axis is dTGM, which satisfies the following condition: fGM / dTGM=25.83.
[0201] When the optical image capture lens group focuses at a long distance, the focal length of the turning group GR is fGR. When the optical image capture lens group focuses at a long distance, the distance from the most object-side surface of the turning group GR to the most image-side surface of the turning group GR on the optical axis is DGR, which satisfies the following condition: fGR / DGR=5.02.
[0202] When the optical image capturing lens group focuses at a long distance, the focal length of the turning group GR is fGR, and the focal length of the most object-side lens of the lens group GL is ff1, which satisfies the following condition: fGR / ff1=5.47.
[0203] When the optical image capturing lens group focuses at a long distance, the focal length of the turning group GR is fGR, and the focal length of the optical image capturing lens group focuses at a long distance is fi, which satisfies the following condition: fGR / fi=2.04.
[0204] When the optical image capture lens assembly is focused at a long distance, the focal length of the turning group GR is fGR. When the optical image capture lens assembly is focused at a long distance, the maximum distance between the optically effective area of the most object-side surface of the turning group GR and the optical axis is YGRf, which satisfies the following condition: fGR / YGRf=11.68.
[0205] The focal length of the optical image capture lens group when focused at a long distance is fi, the focal length of the turning group GR when the optical image capture lens group is focused at a long distance is fGR, and the focal length of the lens group GL when the optical image capture lens group is focused at a long distance is fGL, which satisfies the following condition: fi / fGR+fi / fGL=1.09.
[0206] The focal length of the optical image capture lens group when focused at a long distance is fi. The maximum distance between the optically effective area of the most object-side surface of the turning group GR and the optical axis when the optical image capture lens group is focused at a long distance is YGRf, which satisfies the following condition: fi / YGRf=5.72.
[0207] When the optical image capture lens group is focused at a telephoto distance, the maximum distance between the optically effective area of the object-side surface of the lens most object-side of the lens group GL and the optical axis is Yf1f. When the optical image capture lens group is focused at a telephoto distance, the maximum distance between the optically effective area of the image-side surface of the lens most image-side of the lens group GL and the optical axis is Yr1r, which satisfies the following condition: Yf1f / Yr1r=0.94. In this embodiment, the lens most object-side of the lens group GL is the first lens E1, and the lens most image-side of the lens group GL is the fifth lens E5.
[0208] When the optical image capture lens group focuses at a long distance, the maximum distance between the optically effective area of the object-side surface of the turning group GR and the optical axis is YGRf. When the optical image capture lens group focuses at a long distance, the maximum distance between the optically effective area of the object-side surface of the lens group GL and the optical axis is Yf1f, which satisfies the following condition: YGRf / Yf1f=1.15.
[0209] Please refer to Table 1 and Table 2 below.
[0210]
[0211] Table 1 shows the detailed structural data of the first embodiment, wherein the units of the curvature radius, thickness and focal length are in millimeters (mm), and surfaces 0 to 17 represent the surfaces from the object side to the image side along the optical axis.
[0212]
[0213]
[0214] Table 2 shows the aspheric surface data for the first embodiment, where k is the conic coefficient in the aspheric curve equation, and A4 through A24 represent the 4th through 24th order aspheric coefficients for each surface. Furthermore, the tables in the following embodiments correspond to the schematic diagrams and aberration curves of each embodiment. The definitions of the data in the tables are the same as those in Tables 1 and 2 of the first embodiment and are not further elaborated here.
[0215] <Second embodiment>
[0216] Please refer to Figures 7 to 12 ,in Figure 7 FIG2 is a schematic diagram showing an imaging device focused on a long distance according to a second embodiment of the present invention. Figure 8 FIG2 is a schematic diagram showing the imaging device according to the second embodiment of the present invention focusing at an object distance of 1 meter. Figure 9 FIG2 is a schematic diagram showing the imaging device according to the second embodiment of the present invention focusing at an object distance of 0.5 meters. Figure 10 From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device of the second embodiment when focusing at a long distance. Figure 11 From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the second embodiment when the object distance is 1 meter. Figure 12 From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the second embodiment when the object distance is focused at 0.5 meters. Figures 7 to 9As can be seen, the imaging device 2 includes an optical image capture lens assembly (not otherwise numbered) and an electronic photosensitive element IS. The optical image capture lens assembly includes, in order from the object side to the image side, an aperture ST, a prism E7, a first lens E1, a second lens E2, a stop S1, a third lens E3, a fourth lens E4, a filter element E8, and an imaging surface IMG. The optical image capture lens assembly includes a turning group GR and a lens group GL. The turning group GR includes the prism E7, and the lens group GL includes the first lens E1, the second lens E2, the third lens E3, and the fourth lens E4. The lens group GL includes a moving group GM, which moves parallel to the optical axis during focusing. In this embodiment, the moving group GM comprises only one lens, namely the fourth lens E4, and the moving group GM has positive refractive power. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical image capture lens group includes four lenses (E1, E2, E3, E4). There are no other lenses interpolated between the lenses, and there are no other lenses interpolated between the moving group GM and the imaging surface IMG.
[0217] During the focusing process, the optical image capturing lens assembly adjusts the focal length of the optical image capturing lens assembly by moving the moving group GM in a direction parallel to the optical axis. Figures 7 to 9 It can be seen that the moving group GM (fourth lens E4) moves parallel to the optical axis during focusing. For example, when the optical image capture lens assembly is adjusted from focusing at a long distance (object distance of infinity) to focusing at a close distance (object distance of 1 meter), the moving group GM moves parallel to the optical axis toward the object side. Furthermore, when the optical image capture lens assembly is adjusted from focusing at an object distance of 1 meter to focusing at an object distance of 0.5 meters, the moving group GM moves even further parallel to the optical axis toward the object side.
[0218] Prism E7 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is flat, and its object-side surface is aspherical. Prism E7 includes a reflecting surface RS for reflecting imaging light passing through the object-side surface of prism E7 back to the image-side surface of prism E7.
[0219] The first lens E1 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 surfaces are aspherical, and the object-side surface has at least one inflection point.
[0220] 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 surfaces are aspherical.
[0221] The third lens element E3 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 surfaces are aspherical, and the object-side surface has at least one inflection point.
[0222] The fourth lens element 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 surfaces are aspherical, and the image-side surface has at least one inflection point.
[0223] The filter element E8 is made of glass and is disposed between the fourth lens element E4 and the imaging surface IMG, and does not affect the focal length of the optical image capturing lens assembly.
[0224] In this embodiment, the first lens E1 is the most object-side lens in the lens group GL, the second lens E2 is the second lens from the object side in the lens group GL, and the fourth lens E4 is the most image-side lens in the lens group GL.
[0225] Please refer to Tables 3 and 4 below. The optical image capture lens assembly of this embodiment discloses three different focusing conditions. The first focusing condition of the optical image capture lens assembly is for an object at infinity, the second focusing condition is for an object at 1 meter, and the third focusing condition is for an object at 0.5 meters. This embodiment only discloses the focusing conditions of the optical image capture lens assembly at object distances of infinity, 1 meter, and 0.5 meters, but the present invention is not limited thereto. The optical image capture lens assembly can be adjusted to focus on objects at different object distances according to actual usage requirements. Furthermore, in this embodiment, the distance on the optical axis between the third lens E3 and the fourth lens E4 is D10, and the distance on the optical axis between the fourth lens E4 and the filter element E8 is D12.
[0226]
[0227] From the above table and Figure 7 、 Figure 8 It can be seen that, taking the change in focusing condition from the first state to the second state as an example, the distance between the fourth lens element E4 and the filter element E8 on the optical axis increases from 1.995 mm in the first state to 2.441 mm in the second state. That is, during the focusing process, as the object distance gradually decreases, the moving group GM moves along the optical axis toward the object side.
[0228]
[0229]
[0230]
[0231] In the second embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment and are not repeated here.
[0232]
[0233]
[0234] <Third embodiment>
[0235] Please refer to Figures 13 to 18 ,in Figure 13 FIG2 is a schematic diagram showing an imaging device according to a third embodiment of the present invention focused on a long distance. Figure 14 FIG2 is a schematic diagram showing an imaging device according to a third embodiment of the present invention focusing at an object distance of 1 meter. Figure 15 FIG2 is a schematic diagram showing the imaging device according to the third embodiment of the present invention focusing at an object distance of 0.5 meters. Figure 16 From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the third embodiment when focusing at a long distance. Figure 17 From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the third embodiment when the object distance is 1 meter. Figure 18 From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the third embodiment when the object distance is focused at 0.5 meters. Figures 13 to 15 As can be seen, the imaging device 3 includes an optical image capture lens assembly (not otherwise numbered) and an electronic photosensitive element IS. The optical image capture lens assembly includes, in order from the object side to the image side, an aperture ST, a prism E7, a first lens E1, a second lens E2, a stop S1, a third lens E3, a fourth lens E4, a stop S2, a fifth lens E5, a filter E8, and an imaging surface IMG. The optical image capture lens assembly includes a turning group GR, which includes the prism E7, and a lens group GL, which includes the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, and the fifth lens E5. The lens group GL includes a moving group GM, which moves parallel to the optical axis during focusing. In this embodiment, the moving group GM comprises five lenses: the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, and the fifth lens E5. The moving group GM has positive refractive power. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical image capture lens group includes five lenses (E1, E2, E3, E4, and E5), with no other lenses interposed between the lenses, and no other lenses interposed between the moving group GM and the imaging surface IMG.
[0236] During the focusing process, the optical image capturing lens assembly adjusts the focal length of the optical image capturing lens assembly by moving the moving group GM in a direction parallel to the optical axis. Figures 13 to 15 It can be seen that the moving group GM (first lens E1, second lens E2, third lens E3, fourth lens E4, and fifth lens E5) moves parallel to the optical axis during focusing. For example, when the optical image capture lens assembly adjusts from focusing at a long distance (object distance of infinity) to focusing at a close distance (object distance of 1 meter), the moving group GM moves parallel to the optical axis toward the object side. Furthermore, when the optical image capture lens assembly adjusts from focusing at an object distance of 1 meter to focusing at an object distance of 0.5 meters, the moving group GM moves even further parallel to the optical axis toward the object side. It should be noted that the lenses in the moving group GM do not move relative to each other during focusing.
[0237] Prism E7 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 also convex near the optical axis. Both surfaces are spherical. Prism E7 includes a reflecting surface RS for reflecting imaging light passing through the object-side surface of prism E7 onto the image-side surface of prism E7.
[0238] The first lens E1 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 surfaces are aspherical, and the object-side surface has at least one inflection point.
[0239] 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 surfaces are aspherical. Its object-side surface has at least one inflection point, and its image-side surface has at least one inflection point.
[0240] The third lens element E3 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 surfaces are aspherical. Its object-side surface has at least one inflection point, and its image-side surface also has at least one inflection point.
[0241] The fourth lens element 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 surfaces are aspherical. Its object-side surface has at least one inflection point, and its image-side surface also has at least one inflection point.
[0242] The fifth lens element E5 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 at least one inflection point, and its image-side surface also has at least one inflection point.
[0243] The filter element E8 is made of glass and is disposed between the fifth lens element E5 and the imaging surface IMG, and does not affect the focal length of the optical image capturing lens assembly.
[0244] In this embodiment, the first lens E1 is the most object-side lens in the lens group GL, the second lens E2 is the second lens from the object side in the lens group GL, and the fifth lens E5 is the most image-side lens in the lens group GL.
[0245] Please refer to Tables 5 and 6 below. The optical image capture lens assembly of this embodiment discloses three different focusing conditions: the first focusing condition for an object at infinity, the second focusing condition for an object at 1 meter, and the third focusing condition for an object at 0.5 meters. This embodiment only discloses the focusing conditions for an optical image capture lens assembly at object distances of infinity, 1 meter, and 0.5 meters, but the present invention is not limited thereto. The optical image capture lens assembly can be adjusted to focus on objects at different object distances based on actual usage requirements. Furthermore, in this embodiment, the distance on the optical axis between prism E7 and first lens E1 is D3, and the distance on the optical axis between fifth lens E5 and filter element E8 is D15.
[0246]
[0247] From the above table and Figure 13 、 Figure 14 It can be seen that, taking the changing of the focusing condition from the first state to the second state as an example, the distance on the optical axis between the fifth lens element E5 and the filter element E8 increases from 1.174 mm in the first state to 1.337 mm in the second state. That is, during the focusing process, as the object distance gradually decreases, the moving group GM moves along the optical axis toward the object side.
[0248]
[0249]
[0250]
[0251] In the third embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment and are not repeated here.
[0252]
[0253]
[0254] <Fourth embodiment>
[0255] Please refer to Figures 19 to 22 ,in Figure 19 FIG2 is a schematic diagram showing an imaging device according to a fourth embodiment of the present invention focused on a long distance. Figure 20 FIG2 is a schematic diagram showing an imaging device according to a fourth embodiment of the present invention focusing at an object distance of 1 meter. Figure 21 From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the fourth embodiment when focusing at a long distance, and Figure 22 From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the fourth embodiment when the object distance is 1 meter. Figure 19 and Figure 20 As can be seen, the imaging device 4 includes an optical image capture lens assembly (not otherwise numbered) and an electronic photosensitive element IS. The optical image capture lens assembly includes, in order from the object side to the image side, an aperture S1, a prism E7, an aperture ST, a first lens E1, a second lens E2, a third lens E3, an aperture S2, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E8, and an imaging surface IMG. The optical image capture lens assembly includes a turning group GR, which includes the prism E7, and a lens group GL, which includes the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6. The lens group GL includes a moving group GM, which moves parallel to the optical axis during focusing. In this embodiment, the moving group GM comprises two lenses: the fifth lens E5 and the sixth lens E6. The moving group GM has negative refractive power. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical image capture lens group includes six lenses (E1, E2, E3, E4, E5, E6). There are no other lenses interpolated between the lenses, and there are no other lenses interpolated between the moving group GM and the imaging surface IMG.
[0256] During the focusing process, the optical image capturing lens assembly adjusts the focal length of the optical image capturing lens assembly by moving the moving group GM in a direction parallel to the optical axis. Figure 19 and Figure 20 It can be seen that the moving group GM (fifth lens E5 and sixth lens E6) moves parallel to the optical axis during focusing. For example, when the optical image capture lens assembly adjusts focus from long-range (object distance at infinity) to close-range (object distance at 1 meter), the moving group GM moves parallel to the optical axis toward the image side. It should be noted that the lenses in the moving group GM do not move relative to each other during focusing.
[0257] Prism E7 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 surfaces are aspherical. Prism E7 includes a reflecting surface RS for reflecting imaging light passing through the object-side surface of prism E7 onto the image-side surface of prism E7.
[0258] The first lens E1 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 surfaces are aspherical.
[0259] 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 surfaces are aspherical.
[0260] The third lens element E3 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 surfaces are aspherical. Its object-side surface has at least one inflection point, and its image-side surface also has at least one inflection point.
[0261] The fourth lens element E4 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 surfaces are aspherical, and the image-side surface has at least one inflection point.
[0262] The fifth lens element E5 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 at least one inflection point, and its image-side surface also has at least one inflection point.
[0263] The sixth lens element E6 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 at least one inflection point, and its image-side surface also has at least one inflection point.
[0264] The filter element E8 is made of glass and is disposed between the sixth lens element E6 and the imaging plane IMG, and does not affect the focal length of the optical image capturing lens assembly.
[0265] In this embodiment, the first lens E1 is the most object-side lens in the lens group GL, the second lens E2 is the second lens from the object side in the lens group GL, and the sixth lens E6 is the most image-side lens in the lens group GL.
[0266] Please refer to Tables 7 and 8 below. The optical image capture lens assembly of this embodiment discloses two different focusing conditions. The first focusing condition of the optical image capture lens assembly is for an object at infinity, and the second focusing condition is for an object at 1 meter. This embodiment only discloses the focusing conditions of the optical image capture lens assembly at objects at infinity and 1 meter, but the present invention is not limited thereto. The optical image capture lens assembly can be adjusted to focus on objects at different object distances based on actual usage requirements. Furthermore, in this embodiment, the distance on the optical axis between the fourth lens element E4 and the fifth lens element E5 is D13, and the distance on the optical axis between the sixth lens element E6 and the filter element E8 is D17.
[0267]
[0268] From the above table and Figure 19 、 Figure 20 It can be seen that, taking the change from the first state to the second state as an example, the distance between the sixth lens element E6 and the filter element E8 on the optical axis decreases from 0.785 mm in the first state to 0.595 mm in the second state. That is, during the focusing process, as the object distance gradually decreases, the moving group GM moves along the optical axis toward the image side.
[0269]
[0270]
[0271]
[0272] In the fourth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment and are not repeated here.
[0273]
[0274] <Fifth embodiment>
[0275] Please refer to Figures 23 to 25 ,in Figure 23 FIG2 is a perspective diagram showing one side of an electronic device according to a fifth embodiment of the present invention. Figure 24 Draw Figure 23 A three-dimensional schematic diagram of the other side of the electronic device, and Figure 25 Draw Figure 23 A cross-sectional schematic diagram of two imaging devices in an electronic device.
[0276] In this embodiment, the electronic device 200 is a smartphone and includes the imaging devices 100, 100a, 100b, 100c, 100d, 100e, a flash module 201, a display device 202, a focus assist module, an image signal processor, and an image software processor.
[0277] The imaging device 100 is a camera module that includes an imaging lens, a drive device, an electronic photosensitive element, and an image stabilization module. The imaging lens includes the optical image capture lens assembly, lens barrel, and support device of the first embodiment described above. The imaging lens can also be configured with the optical image capture lens assembly of the other embodiments described above, but the present invention is not limited thereto. Furthermore, the imaging device 100 is a telephoto imaging device configured with a turning group GR. The turning group GR can adjust the direction of imaging light (by turning the optical axis) so that the total length of the imaging device 100 and the thickness of the electronic device 200 are not mutually restricted. The imaging device 100 uses an imaging lens to focus light to generate an image, and cooperates with the drive device to zoom or focus the image. Finally, an image is formed on the electronic photosensitive element and can be output as image data.
[0278] The drive device can provide functions such as zoom or auto-focus. It can be driven by a screw, voice coil motor (VCM) (e.g., spring-type or ball-type), micro-electromechanical systems (MEMS), piezoelectric systems, and shape memory alloy drive systems. The drive device allows the imaging lens to achieve an optimal imaging position, providing clear images of the subject at various object distances. Furthermore, the imaging device 100 incorporates a highly sensitive and low-noise electronic photosensitive element (e.g., a CMOS or CCD) positioned on the imaging surface of the optical image capture lens assembly, effectively demonstrating the excellent imaging quality of the optical image capture lens assembly.
[0279] The image stabilization module can be, for example, an accelerometer, gyroscope, or Hall Effect Sensor. The driver can work with the image stabilization module to function as an optical image stabilization (OIS) device. This device adjusts the different axial positions of the imaging lens to compensate for image blur caused by shaking during shooting. Alternatively, it can utilize image compensation technology within the imaging software to provide electronic image stabilization (EIS), further enhancing image quality in dynamic and low-light scenes.
[0280] The imaging device 100, the imaging device 100a, and the imaging device 100b are all arranged on the same side of the electronic device 200, while the imaging device 100c, the imaging device 100d, the imaging device 100e, and the display device 202 are arranged on the other side of the electronic device 200. The imaging devices 100a, 100b, 100c, 100d, and 100e can all have similar structural configurations to the imaging device 100, and will not be described in detail here. Among them, the imaging device 100a includes an optical lens assembly (not separately labeled) and an electronic photosensitive element (not separately labeled). Figure 25 As shown, the optical axis of the lens group GL in the imaging device 100 is perpendicular to the optical axis of the imaging device 100a. In addition, the optical axis of the lens group GL in the imaging device 100 is also perpendicular to the optical axis of the imaging device 100b. In this way, the spatial configuration can be adjusted to reduce the thickness of the electronic device.
[0281] The imaging device 100 is a telephoto imaging device having an optical path turning element (turning group GR), the imaging device 100a is a telephoto imaging device, and the imaging device 100b is a wide-angle imaging device. Particularly, half of the maximum viewing angle in the imaging device 100a is between 15 degrees and 30 degrees, and half of the maximum viewing angle in the imaging device 100b is between 30 degrees and 60 degrees. In other embodiments, half of the maximum viewing angle in the imaging device 100b may be between 35 degrees and 50 degrees. The imaging device 100, the imaging device 100a, and the imaging device 100b of this embodiment have different viewing angles, which can enable the electronic device to have a larger zoom ratio to expand the scope of application. The above-mentioned electronic device 200 is taken as an example including three imaging devices 100, 100a, and 100b located on the same side, but the present invention is not limited to this. In other embodiments, the electronic device may include at least two imaging devices located on the same side, or the electronic device may include at least three imaging devices located on the same side.
[0282] Image capture device 100c is a wide-angle image capture device, image capture device 100d is an ultra-wide-angle image capture device, and image capture device 100e is a Time of Flight (ToF) image capture device. Image capture device 100e can obtain depth information from an image. Image capture devices 100c, 100d, 100e, and display device 202 are all disposed on the same side of electronic device 200, allowing image capture devices 100c, 100d, and 100e to function as front-facing cameras to provide a selfie function, but the present invention is not limited thereto.
[0283] The electronic device 200 is taken as an example to include a plurality of imaging devices 100 , 100 a , 100 b , 100 c , 100 d , and 100 e , but the number and configuration of the imaging devices are not intended to limit the present invention.
[0284] When a user photographs a subject, the electronic device 200 utilizes the imaging device 100, imaging device 100a, or imaging device 100b to focus and capture the image, activates the flash module 201 for fill light, and uses the subject's distance information provided by the focus assist module for rapid focusing. The image signal processor then performs image optimization processing to further enhance the image quality produced by the optical image capture lens assembly. The focus assist module may utilize an infrared or laser focus assist system to achieve rapid focusing. Furthermore, the electronic device 200 may also utilize the imaging device 100c, imaging device 100d, or imaging device 100e for photographing. The display device 202 may utilize a touch screen, coupled with the diverse functions of the image software processor, for image capture and processing (or may utilize a physical capture button for capturing). Images processed by the image software processor may be displayed on the display device 202.
[0285] <Sixth embodiment>
[0286] Please refer to Figure 26 , is a three-dimensional schematic diagram illustrating one side of an electronic device according to a sixth embodiment of the present invention.
[0287] In this embodiment, electronic device 300 is a smartphone. It includes imaging devices 100f, 100g, 100h, 100i, 100j, 100k, 100m, 100n, 100p, a flash module 301, a focus assist module, an image signal processor, a display device, and an image software processor (not shown). Imaging devices 100f, 100g, 100h, 100i, 100j, 100k, 100m, 100n, and 100p are all located on the same side of electronic device 300, while the display device is located on the other side of the electronic device 300. Furthermore, the imaging devices 100f, 100g, 100h, 100i, 100j, 100k, 100m, 100n, and 100p may all include the optical image capturing lens assembly of the present invention and may have a similar structural configuration to the imaging device 100, which will not be further described herein.
[0288] The imaging devices 100f and 100g are telephoto imaging devices with an optical path deflection element configuration, the imaging devices 100h and 100i are telephoto imaging devices, the imaging devices 100j and 100k are wide-angle imaging devices, the imaging devices 100m and 100n are ultra-wide-angle imaging devices, and the imaging device 100p is a time-of-flight range-finding imaging device. The optical path deflection element configurations of the imaging devices 100f and 100g may, for example, have similar Figures 29 to 31 For the structure of Figures 29 to 31 The description thereof will not be repeated here. The imaging devices 100f, 100g, 100h, 100i, 100j, 100k, 100m, 100n, and 100p of this embodiment have different viewing angles, allowing the electronic device 300 to provide different magnifications to achieve an optical zoom photography effect. The electronic device 300 described above includes a plurality of imaging devices 100f, 100g, 100h, 100i, 100j, 100k, 100m, 100n, and 100p as an example, but the number and configuration of the imaging devices are not intended to limit the present invention.
[0289] The imaging device of the present invention is not limited to use in smartphones. It can also be applied to mobile focus systems as needed, combining excellent aberration correction with high-quality imaging. For example, the imaging device can be widely used in electronic devices such as three-dimensional (3D) image capture, digital cameras, mobile devices, tablet computers, smart TVs, network monitoring equipment, dashcams, reversing cameras, multi-lens devices, recognition systems, motion-sensing game consoles, and wearable devices. The aforementioned electronic devices are merely illustrative examples of practical applications of the present invention and do not limit the scope of application of the imaging device of the present invention.
[0290] Although the present invention is disclosed above with reference to the preferred embodiments, they are not intended to limit the present invention. Any person skilled in the art may make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be determined by the scope of protection of the claims attached to this specification.
Claims
1. An optical image capture lens assembly, characterized in that: The optical image capture lens assembly has a focusing function and includes, in order from the object side to the image side along the optical path: a turning group, comprising a prism, wherein the prism has positive refractive power, the object-side surface of the prism is convex, and the prism comprises a reflecting surface, and the reflecting surface is used to reflect an imaging light passing through the object-side surface of the prism to the image-side surface of the prism; and a lens group comprising at least three lenses arranged along an optical path, wherein the at least three lenses respectively have an object-side surface facing the object side and an image-side surface facing the image side, and wherein the lens group includes a moving group, and the moving group moves in a direction parallel to the optical axis during focusing; When the optical image capture lens assembly is focused at a distance, the distance between the object-side surface of the prism and an imaging plane on the optical axis is TLi; when the optical image capture lens assembly is focused at a distance, the distance between the object-side surface of the prism and the imaging plane on the optical axis is TLm; when the optical image capture lens assembly is focused at a distance, the focal length of the moving group is fGM; when the optical image capture lens assembly is focused at a distance, the focal length of the turning group is fGR; when the optical image capture lens assembly is focused at a distance, the distance between the most object-side surface of the turning group and the most image-side surface of the turning group on the optical axis is DGR; and when the optical image capture lens assembly is adjusted from focusing at a distance to focusing at a distance, the change in the distance between the moving group and the imaging plane on the optical axis is dTGM, which satisfies the following conditions: |TLi-TLm| / TLi<3.0E-3; and 1.0 <fGM×DGR / (fGR×dTGM)<30。 2. The optical image capture lens assembly according to claim 1, wherein: When the optical image capture lens assembly is focused at a long distance, the distance from the object-side surface of the prism to the imaging plane on the optical axis is TLi. When the optical image capture lens assembly is focused at a short distance, the distance from the object-side surface of the prism to the imaging plane on the optical axis is TLm. The focal length of the optical image capture lens assembly when focused at a long distance is fi, and the focal length of the optical image capture lens assembly when focused at a short distance is fm, which satisfies the following conditions: |TLi-TLm| / TLi<1.0E-3; and 1.0E-3<(fi-fm) / fi<1.0E-1.
3. The optical image capture lens assembly according to claim 1, wherein: When the optical image capture lens assembly is focused at a telephoto distance, the focal length of the moving group is fGM. When the optical image capture lens assembly is focused at a telephoto distance, the focal length of the turning group is fGR. When the optical image capture lens assembly is focused at a telephoto distance, the distance on the optical axis from the most object-side surface of the turning group to the most image-side surface of the turning group is DGR. When the optical image capture lens assembly is adjusted from focusing at a telephoto distance to focusing at a near distance, the change in the distance on the optical axis between the moving group and the imaging plane is dTGM, which satisfies the following conditions: 2.0 <fGM×DGR / (fGR×dTGM)<27。 4. The optical image capture lens assembly according to claim 1, wherein: When the optical image capturing lens group is focused on a distant object, the distance on the optical axis from the most object-side surface to the most image-side surface of the lens group is DGL, and when the optical image capturing lens group is focused on a distant object, the distance on the optical axis from the most object-side surface to the most image-side surface of the moving group is DGM, which satisfies the following conditions: 1.0 ≤ DGL / DGM < 20.
5. The optical image capture lens assembly according to claim 1, wherein: When the optical image capturing lens group is focused on a distant object, the distance on the optical axis from the object-side surface of the prism to the imaging surface is TLi, the focal length of the optical image capturing lens group when focused on a distant object is fi, and the maximum imaging height of the optical image capturing lens group when focused on a distant object is ImgHi, which satisfies the following conditions: 0.60 < TLi / fi < 2.0; and 4.0 < TLi / ImgHi < 10.
6. The optical image capture lens assembly according to claim 1, wherein: The radius of curvature of the most object-side surface of the turning group at the near optical axis is RGRf, the focal length of the turning group when the optical image capturing lens group is focused on a distant object is fGR, and the focal length of the most object-side lens of the lens group is ff1, which satisfies the following conditions: 0.35 < RGRf / fGR < 2.0; and 1.8 < fGR / ff1 < 10.
7. The optical image capture lens assembly according to claim 1, wherein: The lens group includes at least four lenses, and the moving group has a positive refractive power.
8. An optical image capture lens assembly, characterized in that: Having a focusing function, the optical image capturing lens group sequentially includes, along the optical path from the object side to the image side: A turning group including a prism, the prism having a positive refractive power, the object-side surface of the prism being convex, the prism including a reflecting surface, and the reflecting surface being used to reflect an imaging light ray passing through the object-side surface of the prism to the image-side surface of the prism; and A lens group including at least three lenses arranged along the optical path, the at least three lenses respectively having an object-side surface facing the object side and an image-side surface facing the image side, the lens group including a moving group, and the moving group moving in a direction parallel to the optical axis during focusing, wherein there is no other interpolated lens between the moving group and an imaging surface of the optical image capturing lens group; Wherein, when the optical image capturing lens group is focused on a distant object, the distance on the optical axis from the object-side surface of the prism to the imaging surface is TLi, when the optical image capturing lens group is focused on a near object, the distance on the optical axis from the object-side surface of the prism to the imaging surface is TLm, the focal length of the turning group when the optical image capturing lens group is focused on a distant object is fGR, and the distance on the optical axis from the most object-side surface to the most image-side surface of the turning group when the optical image capturing lens group is focused on a distant object is DGR, which satisfies the following conditions: |TLi - TLm| / TLi < 3.0E-3; and 2.00 < fGR / DGR < 6.
50.
9. The optical image capture lens assembly according to claim 8, wherein: 10. The optical image capture lens assembly according to claim 8, wherein: The focal length of the optical image capturing lens group when focused on a long distance is fi, and the focal length of the optical image capturing lens group when focused on a short distance is fm, which satisfy the following conditions: 1.0E-3 < (fi - fm) / fi < 1.0E-1.
11. The optical image capture lens assembly according to claim 8, wherein: The refractive index of the prism is Np, and the refractive index of the lens on the object side of the lens group is Nf1, which satisfy the following conditions: |(Np - Nf1) / (Nf1 - 1.5)| < 1.
2.
12. The optical image capture lens assembly according to claim 8, wherein: The focal length of the moving group when the optical image capturing lens group is focused on a long distance is fGM, and the distance on the optical axis from the object-side surface to the image-side surface of the moving group when the optical image capturing lens group is focused on a long distance is DGM, which satisfy the following conditions: 1.5 < |fGM / DGM| < 30.
13. The optical image capture lens assembly according to claim 8, wherein: The focal length of the optical image capturing lens group when focused on a long distance is fi, the focal length of the turning group when the optical image capturing lens group is focused on a long distance is fGR, and the focal length of the lens group when the optical image capturing lens group is focused on a long distance is fGL, which satisfy the following conditions: 0.75 < fGR / fi < 6.5; and 0.50 < fi / fGR + fi / fGL < 1.
4.
14. The optical image capture lens assembly according to claim 8, wherein: The maximum distance between the optical effective area of the object-side surface of the lens on the object side of the lens group and the optical axis when the optical image capturing lens group is focused on a long distance is Yf1f, the maximum distance between the optical effective area of the image-side surface of the lens on the image side of the lens group and the optical axis when the optical image capturing lens group is focused on a long distance is Yr1r, and the maximum distance between the optical effective area of the object-side surface of the turning group and the optical axis when the optical image capturing lens group is focused on a long distance is YGRf, which satisfy the following conditions: 0.50 < Yf1f / Yr1r < 2.0; and 0.7 < YGRf / Yf1f < 2.
0.
15. The optical image capture lens assembly according to claim 8, wherein: The lens on the object side of the lens group has a positive refractive power, and the object-side surface of the lens on the object side of the lens group is convex near the optical axis; Wherein, the radius of curvature of the object-side surface of the lens on the object side of the lens group near the optical axis is Rf1f, and the focal length of the lens on the object side of the lens group is ff1, which satisfy the following conditions: 0.30 < Rf1f / ff1 < 1.
2.
16. The optical image capture lens assembly according to claim 8, wherein: The total number of lenses in the moving group is one.
17. The optical image capture lens assembly according to claim 8, wherein: At least one lens in the lens group is made of plastic, and at least one surface of the object-side surface and the image-side surface of at least one lens in the lens group has at least one anti-reflection point.
18. An optical image capture lens assembly, characterized in that: Having a focusing function, the optical image capturing lens group sequentially includes, along the optical path from the object side to the image side: A turning group, including a prism, the object-side surface of the prism is convex, the prism is of a single material within the range of its optical effective area, the prism includes a reflecting surface, and the reflecting surface is used to reflect an imaging light passing through the object-side surface of the prism to the image-side surface of the prism; and A lens group, including at least three lenses arranged along the optical path, the at least three lenses respectively have an object-side surface facing the object side and an image-side surface facing the image side, the lens group includes a moving group, and the moving group moves along a direction parallel to the optical axis during the focusing process; Wherein, when the optical image capturing lens group focuses on a long distance, the distance from the object-side surface of the prism to an imaging surface on the optical axis is TLi; when the optical image capturing lens group focuses on a short distance, the distance from the object-side surface of the prism to the imaging surface on the optical axis is TLm; when the optical image capturing lens group focuses on a long distance, the focal length of the moving group is fGM; during the process of the optical image capturing lens group adjusting from focusing on a long distance to focusing on a short distance, the variation of the distance between the moving group and the imaging surface on the optical axis is dTGM, and the following conditions are satisfied: |TLi - TLm| / TLi < 3.0E-3; and 15.0 < fGM / dTGM < 150.
19. The optical image capture lens assembly according to claim 18, wherein: When the optical image capturing lens group focuses on a long distance, the distance from the object-side surface of the prism to the imaging surface on the optical axis is TLi; when the optical image capturing lens group focuses on a short distance, the distance from the object-side surface of the prism to the imaging surface on the optical axis is TLm; when the optical image capturing lens group focuses on a long distance, the focal length is fi; when the optical image capturing lens group focuses on a short distance, the focal length is fm, and the following conditions are satisfied: |TLi - TLm| / TLi < 1.0E-3; and 1.0E-3 < (fi - fm) / fi < 1.0E-1.
20. The optical image capture lens assembly according to claim 18, wherein: When the optical image capturing lens group focuses on a long distance, half of the maximum viewing angle is HFOVi; when the optical image capturing lens group focuses on a long distance, the focal length is fi; when the optical image capturing lens group focuses on a long distance, the maximum distance between the optical effective area of the most object-side surface of the turning group and the optical axis is YGRf, and the following conditions are satisfied: 3.0 degrees < HFOVi < 20.0 degrees; and 3.0 < fi / YGRf < 8.
0.
21. The optical image capture lens assembly according to claim 18, wherein: The minimum Abbe number among all the lenses of the lens group is Vmin, and the maximum refractive index among all the lenses of the lens group is Nmax, and the following conditions are satisfied: 5.50 < Vmin / Nmax < 12.
0.
22. The optical image capture lens assembly according to claim 18, wherein: When the optical image capturing lens group focuses on a long distance, the distance from the most object-side surface of the turning group to the most image-side surface of the turning group on the optical axis is DGR; when the optical image capturing lens group focuses on a long distance, the distance from the most object-side surface of the lens group to the most image-side surface of the lens group on the optical axis is DGL, and the following conditions are satisfied: 0.30 < DGR / DGL < 2.
0.
23. The optical image capture lens assembly according to claim 18, wherein: When the optical image capturing lens group focuses on a long distance, the focal length is fi; when the optical image capturing lens group focuses on a long distance, the focal length of the moving group is fGM, and the following conditions are satisfied: 0.2 < |fi / fGM| < 3.
5.
24. The optical image capture lens assembly according to claim 18, wherein: When the optical image capturing lens group focuses on a long distance, the focal length of the turning group is fGR; when the optical image capturing lens group focuses on a long distance, the maximum distance between the optical effective area of the most object-side surface of the turning group and the optical axis is YGRf, and the following conditions are satisfied: 4.0 < fGR / YGRf < 30.
25. The optical image capture lens assembly according to claim 18, wherein: The most object-side lens of the lens group has a positive refractive power, and the second lens counted from the object side in the lens group has a negative refractive power; The focal length of the most object-side lens in the lens group is ff1, and the focal length of the second lens in the lens group from the object side is ff2, which satisfies the following conditions: -10 <ff2 / ff1<-0.70。 26. The optical image capture lens assembly according to claim 18, wherein: The prism is made of plastic; The Abbe number of the prism is Vp, and the refractive index of the prism is Np, which satisfies the following conditions: 30.0 <Vp / Np<40.0。 27. An imaging device, characterized in that: Include: The optical image capture lens assembly according to claim 18; and An electronic photosensitive element is disposed on the imaging surface of the optical image capturing lens assembly.
28. An electronic device, characterized in that: The electronic device comprises at least two imaging devices, and the at least two imaging devices are located on the same side of the electronic device, wherein the at least two imaging devices include: a first imaging device comprising the optical image capturing lens assembly according to claim 18 and an electronic photosensitive element, wherein the electronic photosensitive element of the first imaging device is disposed on the imaging surface of the optical image capturing lens assembly; and a second imaging device comprising an optical lens assembly and an electronic photosensitive element, wherein the electronic photosensitive element of the second imaging device is disposed on an imaging surface of the optical lens assembly; Wherein, half of the maximum viewing angle of the second imaging device is 30 degrees to 60 degrees.
Citation Information
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Optical imaging system
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Optical imaging lens
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