Lens device

Abstract

The present invention discloses a lens device, which includes a base, a correction member, a lens module, and a clamping member. The base includes an assembly plane and a receiving portion. The correction member is arranged on the assembly plane of the base. The correction member has a through hole and an internal thread. The lens module includes an external thread. The lens module passes through the through hole of the correction member, the external thread and the internal thread cooperate with each other, and a portion of the lens module is arranged in the receiving portion. The clamping member includes a clamping portion and an elastic arm. The clamping portion clamps the base, and a portion of the elastic arm contacts the surface of the correction member relative to the assembly plane.

Description

Technical Field

[0001] The present invention relates to an optical device, in particular to a lens device. Background Art

[0002] Generally speaking, many electronic products (such as cameras, driving recorders, smart phones, tablet computers, or notebook computers) have a lens device to capture images outside the electronic products.

[0003] Capturing clear images with the correct focal length is paramount for any lens assembly. Currently, lens assembly manufacturing processes often utilize active alignment for focusing. This method primarily involves placing the lens on a holder and then adjusting the relative position of the lens and holder to achieve focus. Specifically, a photosensitive element is positioned at the bottom of the holder. By adjusting the relative position of the lens and holder, the image is precisely positioned on the holder. Finally, the lens and holder are glued together to secure the image.

[0004] However, this gluing method can easily weaken the adhesive over time or due to environmental factors such as temperature and humidity, causing the relative position of the lens and the base to shift. This relative position shift can also cause focus shift, making it difficult to obtain a clear image. Summary of the Invention

[0005] In view of the above problems, the main object of the present invention is to provide a lens device that can solve the problem of the relative position of the lens and the base of the conventional lens device being easily offset by using a novel structure of a clamping member.

[0006] To achieve the above-mentioned objectives, the present invention provides a lens device comprising a base, a correction member, a lens module, and a clamping member. The base comprises an assembly plane and a receiving portion. The correction member is disposed on the assembly plane of the base. The correction member has a through hole and an internal thread. The lens module comprises an external thread. The lens module passes through the through hole of the correction member, the external thread and the internal thread cooperate with each other, and a portion of the lens module is disposed in the receiving portion. The clamping member comprises a clamping portion and an elastic arm. The clamping portion clamps the base, and a portion of the elastic arm contacts a surface of the correction member relative to the assembly plane.

[0007] According to an embodiment of the present invention, the elastic arm extends from the engaging portion and has a pressing portion that contacts a surface of the calibration component opposite to the assembly plane.

[0008] According to an embodiment of the present invention, one end of the elastic arm is connected to the engaging portion, and the other end has a pressing portion.

[0009] According to an embodiment of the present invention, the elastic arm has a first positioning portion, and the correction member has a second positioning portion, wherein the first positioning portion and the second positioning portion cooperate with each other.

[0010] According to an embodiment of the present invention, the base includes an extension portion, and the engaging portion clamps the extension portion.

[0011] According to an embodiment of the present invention, the engaging portion is located at at least one end of the clamping member, and the engaging portion has at least one bent portion corresponding to a corner of the extending portion.

[0012] According to an embodiment of the present invention, the engaging portion has a third positioning portion, and the base has a fourth positioning portion, and the third positioning portion and the fourth positioning portion cooperate with each other.

[0013] According to an embodiment of the present invention, the lens device further includes a colloid, which is disposed on the assembly plane of the base and connects the base and the correction element.

[0014] According to an embodiment of the present invention, the lens device further includes a photosensitive component. The photosensitive component is disposed on the bottom surface of the accommodating portion and corresponds to the lens module.

[0015] To achieve the above objectives, the present invention provides a lens device comprising a base, a lens module, and a clamping member. The base comprises an assembly plane and a receiving portion. The lens module comprises a connecting portion. A portion of the lens module is disposed in the receiving portion, and the connecting portion is disposed on the assembly plane. The clamping member comprises a locking portion and an elastic arm. The locking portion clamps the base, and a portion of the elastic arm contacts a surface of the connecting portion opposite the assembly plane.

[0016] According to an embodiment of the present invention, the elastic arm extends from the engaging portion and has a pressing portion that contacts a surface of the connecting portion opposite to the assembly plane.

[0017] According to an embodiment of the present invention, one end of the elastic arm is connected to the engaging portion, and the other end has a pressing portion.

[0018] According to an embodiment of the present invention, the base includes an extension portion, and the engaging portion clamps the extension portion.

[0019] According to an embodiment of the present invention, the engaging portion is located at at least one end of the clamping member, and the engaging portion has at least one bent portion corresponding to a corner of the extending portion.

[0020] According to an embodiment of the present invention, the lens device further includes a colloid, which is disposed on the assembly plane of the base and connects the base to the connecting portion of the lens module.

[0021] As described above, the lens device according to the present invention includes a clamping member, and the clamping member includes a snap-fit ​​portion and an elastic arm. The snap-fit ​​portion clamps the base, and a portion of the elastic arm contacts the connection portion of the correction member or the base to fix the relative position between the base and the lens module. Specifically, the colloid connecting the correction member and the lens module, or the colloid connecting the base and the lens module, may lose viscosity over time or due to environmental factors, thereby causing the relative position between the base and the lens module to shift. The provision of the clamping member can also prevent the relative position between the base and the lens module from shifting due to weakening of the viscosity of the colloid. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. 1 is a schematic diagram of a lens device according to a first embodiment of the present invention.

[0023] Figure 2 for Figure 1 Exploded view of the lens assembly shown.

[0024] Figure 3 for Figure 1 A cross-sectional view of the lens assembly is shown.

[0025] Figure 4 for Figure 2 An enlarged view of the clamp is shown.

[0026] Figure 5 FIG. 4 is a cross-sectional view of a lens device according to a second embodiment of the present invention.

[0027] Figure 6 FIG. 4 is a cross-sectional view of a lens device according to a third embodiment of the present invention.

[0028] Figure 7 for Figure 6 Exploded view of the lens assembly shown.

[0029] Figure 8 for Figure 6 A cross-sectional view of the lens assembly is shown.

[0030] Wherein, the reference numerals:

[0031] Lens devices 1, 1a, 1b

[0032] Base 10, 10a

[0033] Assembly plane 11

[0034] Accommodation portion 12

[0035] Extensions 13, 13a

[0036] Fourth positioning portion 14a

[0037] Correction parts 20, 20a

[0038] Through hole 21

[0039] Internal thread 22

[0040] Upper surfaces 23, 23a

[0041] Second positioning portion 24

[0042] Lens modules 30, 30b

[0043] External thread 31

[0044] Connecting portion 32b

[0045] Upper surface 321b

[0046] Clamping members 40, 40a

[0047] Engaging portions 41, 41a

[0048] Bending portion 411

[0049] The third positioning portion 412a

[0050] Elastic arms 42, 42a

[0051] Pressing portion 421

[0052] First positioning portion 422

[0053] Photosensitive component 50

[0054] Colloid 60 DETAILED DESCRIPTION

[0055] In order to enable the examiner to better understand the technical content of the present invention, preferred specific embodiments are described below.

[0056] Figure 1 is a schematic diagram of a lens device according to a first embodiment of the present invention, Figure 2 for Figure 1 An exploded view of the lens assembly shown, Figure 3 for Figure 1 For a cross-sectional view of the lens assembly shown, please refer to Figure 1 、 Figure 2 and Figure 3 As shown in FIG. The lens device 1 of this embodiment includes a base 10, a calibration component 20, a lens module 30, and at least one clamping component 40. The base 10 includes an assembly plane 11 and a receiving portion 12. Specifically, the base 10 of this embodiment has a cylindrical structure, and thus has a hollow receiving portion 12 in its center for accommodating the lens module 30. The base 10 has an upper surface and a lower surface. The upper surface of the base 10 is referred to herein as the assembly plane 11.

[0057] like Figure 2As shown, the calibration member 20 has a through hole 21 and an internal thread 22, with the internal thread 22 located on the inner wall of the through hole 21. Preferably, the calibration member 20 has a ring-shaped structure. The calibration member 20 is disposed on the assembly plane 11 of the base 10, with the through hole 21 corresponding to the accommodating portion 12. Therefore, the lens module 30 can pass through the through hole 21 of the calibration member 20, and a portion of the lens module 30 is disposed in the accommodating portion 12. Specifically, when a portion of the lens module 30 passes through the through hole 21 of the calibration member 20, it is accommodated in the accommodating portion 12 of the base 10.

[0058] Furthermore, the lens module 30 includes an external thread 31, which is located on the outer side wall of the lower half of the lens module 30. When a portion of the lens module 30 passes through the through hole 21, the external thread 31 of the lens module 30 cooperates with the internal thread 22 of the correction member 20. The structure of the internal thread 22 and the external thread 31 cooperating with each other not only allows the correction member 20 and the lens module 30 to be fixed in a screw-locking manner, but also allows the axial position of the lens module 30 to be adjusted. In addition, the lens device 1 further includes a photosensitive component 50, such as Figure 3 The photosensitive component 50 is located on the bottom side of the accommodating portion 12, that is, close to the lower surface of the base 10, so that the photosensitive component 50 corresponds to the lens module 30. The vertical distance between the lens module 30 and the photosensitive component 50 can be adjusted by the structure in which the internal thread 22 and the external thread 31 cooperate with each other.

[0059] In one embodiment, the lens module 30 may be first screwed to the calibration member 20, and then the calibration member 20 and the lens module 30 may be placed together on the base 10. The calibration member 20 is placed on the assembly plane 11, and the lens module 30 is accommodated in the accommodation portion 12. Next, the relative position of the lens module 30 and the photosensitive component 50 is adjusted so that the lens module 30 and the photosensitive component 50 are maintained at a predetermined imaging focal length. In addition to adjusting the vertical distance between the lens module 30 and the photosensitive component 50 as described above, the relative position of the lens module 30 and the photosensitive component 50 on the plane may also be adjusted by moving the calibration member 20 left and right. Finally, the calibration member 20 is fixed to the assembly plane 11 of the base 10, and the lens module 30 is fixed at a position where it can maintain a predetermined imaging focal length with the photosensitive component 50.

[0060] Preferably, the lens device 1 of this embodiment further includes a colloid 60. The colloid 60 is disposed on the assembly plane 11 of the base 10 and connects the base 10 and the correction piece 20. For example, the colloid 60 can be pre-applied to the assembly plane 11, or placed between the assembly plane 11 and the correction piece 20 in the form of glue pouring. In this embodiment, the colloid 60 can be a light-curing colloid or a heat-curing colloid, and is pre-applied to the assembly plane 11 of the base 10. After the lens module 30 is focused, that is, after the lens module 30 is adjusted to a position where it can maintain a predetermined imaging focal length with the photosensitive component 50, the colloid 60 is cured by irradiating light or heating to fix the relative positions of the base 10, the correction piece 20, the lens module 30 and the colloid 60. At the same time, the lens module 30 is also fixed at a position where it can maintain a predetermined imaging focal length with the photosensitive component 50.

[0061] In this embodiment, the clamping member 40 is used to further fix the relative positions of the base 10 and the calibration member 20 to prevent the adhesive 60 from decreasing in viscosity due to time or environmental factors. Figure 4 for Figure 2 For an enlarged view of the clamp shown, please refer to Figure 3 and Figure 4 As shown. The clamping member 40 includes a snap-fit ​​portion 41 and an elastic arm 42. The snap-fit ​​portion 41 clamps the base 10. Preferably, the base 10 of this embodiment includes an extension portion 13, and the snap-fit ​​portion 41 clamps the extension portion 13. Part of the elastic arm 42 contacts the surface of the correction member 20 relative to the assembly plane 11 (i.e., the upper surface 23 of the correction member 20), so that the elastic arm 42 can apply a force toward the assembly plane 11 (i.e., downward) to the correction member 20. Therefore, by virtue of the elastic characteristics of the elastic arm 42, after the elastic arm 42 is stretched and clamped between the base 10 and the correction member 20, the clamping member 40 can fix the relative position of the base 10 and the correction member 20, and thereby fix the relative position of the lens module 30 and the photosensitive component 50.

[0062] In this embodiment, the engaging portion 41 is located at one end of the clamping member 40 and has at least one bent portion 411. The position of the bent portion 411 can be adjusted according to the structure of the base 10. For example, the bent portion 411 can be positioned to match the length and height of the extension 13, so that the bent portion 411 corresponds to a corner of the extension 13. The provision of the bent portion 411 allows the engaging portion 41 to conform to the lower surface of the extension 13.

[0063] In addition, the elastic arm 42 extends from the engaging portion 41 and makes the clamping member 40 present a U-shaped structure. In addition, the elastic arm 42 has a pressing portion 421. In other words, one end of the elastic arm 42 is connected to the engaging portion 41, and the other end has a pressing portion 421. The elastic arm 42 can contact the upper surface 23 of the correction member 20 with the pressing portion 421. In other words, the engaging portion 41 and the pressing portion 421 are respectively located at opposite ends of the clamping member 40. The engaging portion 41 is clamped and fixed to the extension portion 13 of the base 10, and the pressing portion 421 contacts the upper surface 23 of the correction member 20, so that the elastic arm 42 can apply a force to the correction member 20 toward the assembly plane 11 to fix the relative position of the base 10 and the correction member 20, thereby keeping the lens module 30 and the photosensitive component 50 at a predetermined imaging focal length.

[0064] In other embodiments, the engaging portions 41 may be located at opposite ends of the clamping member 40, with the elastic arms 42 located in the center of the engaging portions 41. The engaging portions 41 at the ends clamp the base 10, while the elastic arms 42 in the center contact the upper surface 23 of the calibration member 20, thereby similarly securing the relative positions of the base 10 and the calibration member 20.

[0065] Preferably, the lens device 1 of this embodiment includes two clamping members 40. Preferably, the two clamping members 40 can be clamped at symmetrical positions of the base 10, such as at two opposite sides of the base 10, to firmly fix the relative positions of the base 10 and the correction member 20.

[0066] Preferably, the elastic arm 42 of this embodiment further has a first positioning portion 422. Correspondingly, the correction member 20 has a second positioning portion 24. The first positioning portion 422 and the second positioning portion 24 cooperate with each other. Here, it means that the setting positions and configurations of the first positioning portion 422 and the second positioning portion 24 cooperate with each other. For example, the first positioning portion 422 is located at the pressing portion 421 and can be a convex portion. Correspondingly, the second positioning portion 24 is located on the upper surface 23 of the correction member 20 and is a groove. In addition, the number of the first positioning portion 422 and the second positioning portion 24 is the same as the number of the clamping member 40, and this embodiment takes two as an example. Preferably, the two second positioning portions 24 can be located at symmetrical positions of the correction member 20. When installing the clamping member 40, the first positioning portion 422 is aligned with the second positioning portion 24, and the engaging portion 41 is engaged with the extension portion 13 of the base 10. Since the two second positioning portions 24 are symmetrically disposed, the two clamping members 40 can also be symmetrically engaged with the base 10 and the calibration member 20 .

[0067] Figure 5 This is a cross-sectional view of a lens device according to a second embodiment of the present invention. Figure 5As shown. The lens device 1a of this embodiment differs from the lens device 1 of the previous embodiment in the location of the positioning portion. Therefore, the base 10a, correction member 20a, and clamping member 40a are different from the previous embodiment. The structure of other components is the same as that of the first embodiment, and therefore the component numbers are retained. In this embodiment, the engaging portion 41a of the clamping member 40a has a third positioning portion 412a. In other words, the third positioning portion 412a is located on the engaging portion 41a. Correspondingly, the base 10a has a fourth positioning portion 14a. The third positioning portion 412a and the fourth positioning portion 14a cooperate with each other. Similarly, this refers to the mutual coordination of the location and configuration of the third positioning portion 412a and the fourth positioning portion 14a. For example, the third positioning portion 412a is located on the surface of the engaging portion 41a facing the extension portion 13a, and the third positioning portion 412a is a convex portion. Correspondingly, the fourth positioning portion 14a is located on the lower surface of the extension portion 13a and is a recessed portion.

[0068] When installing the clamping member 40a, first align the third positioning portion 412a with the fourth positioning portion 14a, thereby engaging the engaging portion 41a with the extending portion 13a. Next, the elastic arm 42a is brought into contact with the upper surface 23a of the calibration member 20a, so that the elastic arm 42a exerts a downward force on the calibration member 20a, thereby fixing the relative position of the base 10a and the calibration member 20a.

[0069] Figure 6 is a cross-sectional view of a lens device according to a third embodiment of the present invention, Figure 7 for Figure 6 An exploded view of the lens assembly shown, Figure 8 for Figure 6 For a cross-sectional view of the lens assembly shown, please refer to Figure 6 、 Figure 7 and Figure 8 As shown. In this embodiment, the lens device 1b includes a base 10, a lens module 30b, at least one clamping member 40, a photosensitive component 50, and a colloid 60. The structures of the base 10, the clamping member 40, the photosensitive component 50, and the colloid 60 are the same as those in the first embodiment, so their component symbols are used. In this embodiment, the base 10 also includes an assembly plane 11, a receiving portion 12, and an extension portion 13. The lens module 30b includes a connecting portion 32b, and the connecting portion 32b is located on the outer side wall of the lens module 30b. Part of the lens module 30b is disposed in the receiving portion 12, and the connecting portion 32b is disposed on the assembly plane 11.

[0070] In this embodiment, the relative positions of the lens module 30b and the photosensitive component 50 on a plane can be adjusted by moving the lens module 30b left or right, maintaining the lens module 30b and the photosensitive component 50 at a predetermined imaging focal length. Similarly, a light-curing or heat-curing adhesive 60 is placed on the assembly plane 11 of the base 10. After the lens module 30b is focused, the adhesive 60 is cured by light or heat, connecting the base 10 to the connecting portion 32b of the lens module 30b, thereby fixing the relative positions of the base 10, lens module 30b, and adhesive 60.

[0071] In this embodiment, a clamping member 40 further secures the relative position of the base 10 and the lens module 30b to prevent the adhesive 60 from losing its viscosity over time or due to environmental factors. The clamping member 40 includes a snap-fitting portion 41 and an elastic arm 42. The snap-fitting portion 41 clamps the extension 13 of the base 10. In this embodiment, the snap-fitting portion 41 also has at least one bent portion 411, which corresponds to a corner of the extension 13, allowing the snap-fitting portion 41 to contact the lower surface of the extension 13.

[0072] Part of the elastic arm 42 contacts the surface of the connecting portion 32b of the lens module 30b relative to the assembly plane 11 (i.e., the upper surface 321b of the connecting portion 32b), so that the elastic arm 42 can apply a force to the lens module 30b toward the assembly plane 11 (i.e., downward). Similarly, the elastic arm 42 extends from the engaging portion 41 and has a pressing portion 421. That is, one end of the elastic arm 42 is connected to the engaging portion 41, and the other end has a pressing portion 421. The pressing portion 421 of this embodiment contacts the upper surface 321b of the connecting portion 32b. Therefore, the clamping member 40 can fix the relative position of the base 10 and the lens module 30b, thereby fixing the lens module 30b in a position where it can maintain a predetermined imaging focal length with the photosensitive component 50.

[0073] In summary, the lens device according to the present invention includes a clamping member, and the clamping member includes a snap-fit ​​portion and an elastic arm. The snap-fit ​​portion clamps the base, and a portion of the elastic arm contacts the connection portion of the correction member or the base to fix the relative position between the base and the lens module. Specifically, the colloid connecting the correction member and the lens module, or the colloid connecting the base and the lens module, may lose viscosity over time or due to environmental factors, thereby causing the relative position between the base and the lens module to shift. The provision of the clamping member can also prevent the relative position between the base and the lens module from shifting due to weakening of the viscosity of the colloid.

[0074] It should be noted that the above embodiments are provided for the purpose of illustration only. The scope of rights claimed by the present invention should be based on the claims and is not limited to the above embodiments.

Claims

1. A lens device, characterized in that: The lens device comprises: The base comprises an assembly plane, a receiving portion and an extension portion; A correction piece is provided on the assembly plane, and the correction piece has a through hole and an internal thread; a lens module comprising an external thread, the lens module passing through the through hole of the correction member, the external thread cooperating with the internal thread, and a portion of the lens module being disposed in the accommodating portion; and The clamping member includes a clamping portion and an elastic arm, wherein the clamping portion is located at at least one end of the clamping member and has at least one bending portion. The clamping portion clamps the extension portion, and the elastic arm extends from the clamping portion. Part of the elastic arm contacts the surface of the correction member relative to the assembly plane.

2. The lens device according to claim 1, wherein: The elastic arm has a pressing portion, and the pressing portion contacts the surface of the correction member relative to the assembly plane.

3. The lens device according to claim 2, wherein: One end of the elastic arm is connected to the engaging portion, and the other end has the pressing portion.

4. The lens device according to claim 2, wherein: The elastic arm has a first positioning portion, the correction piece has a second positioning portion, and the first positioning portion and the second positioning portion cooperate with each other.

5. The lens device according to claim 1, wherein: The bent portion corresponds to a corner of the extending portion.

6. The lens device according to claim 1, wherein: The engaging portion has a third positioning portion, the base has a fourth positioning portion, and the third positioning portion and the fourth positioning portion cooperate with each other.

7. The lens device according to claim 1, wherein: Further including: The colloid is arranged on the assembly plane of the base and connects the base and the calibration piece.

8. The lens device according to claim 1, wherein: Further including: The photosensitive component is arranged on the bottom side of the accommodating portion and corresponds to the lens module.

9. A lens device, characterized in that: The lens device comprises: The base comprises an assembly plane, a receiving portion and an extension portion; A lens module, comprising a connecting portion, a portion of the lens module being disposed in the accommodating portion, and the connecting portion being disposed on the assembly plane; and The clamping member includes a clamping portion and an elastic arm, wherein the clamping portion is located at at least one end of the clamping member and has at least one bent portion. The clamping portion clamps the extension portion, and the elastic arm extends from the clamping portion. Part of the elastic arm contacts the surface of the connecting portion relative to the assembly plane.

10. The lens device according to claim 9, wherein: The elastic arm has a pressing portion, and the pressing portion contacts the surface of the connecting portion opposite to the assembly plane.

11. The lens device according to claim 10, wherein: One end of the elastic arm is connected to the engaging portion, and the other end has the pressing portion.

12. The lens device according to claim 9, wherein: The bent portion corresponds to a corner of the extending portion.

13. The lens device according to claim 9, wherein: Further including: The colloid is arranged on the assembly plane of the base and connects the base and the connecting portion of the lens module.

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