CN109709656B - Adjustable core lens mechanism - Google Patents
Adjustable core lens mechanism Download PDFInfo
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- CN109709656B CN109709656B CN201910218299.0A CN201910218299A CN109709656B CN 109709656 B CN109709656 B CN 109709656B CN 201910218299 A CN201910218299 A CN 201910218299A CN 109709656 B CN109709656 B CN 109709656B
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- adjustable core
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- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 3
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- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 3
- 239000011425 bamboo Substances 0.000 claims 3
- 238000003384 imaging method Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
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Abstract
The invention discloses an adjustable core lens mechanism, and relates to the technical field of imaging equipment. The adjustable core lens mechanism comprises a lens main barrel and a lens front group used for fixing a lens, wherein a wave spring is arranged between the lens main barrel and the lens front group, a fastener sequentially penetrates through the lens front group and the wave spring and then is connected with the lens main barrel, and the tightness of the fastener is adjustable so as to adjust the central axis position of the lens front group by changing the deformation of the wave spring. In the adjustable core lens mechanism, the waveform spring is arranged between the lens main barrel and the lens front group, and the deformation of the waveform spring can be adjusted by adjusting the tightness of the fastener, so that the inclination angle of the lens front group is adjusted, the coincidence of the axis of the lens front group and the axis of the lens main barrel is ensured, and the imaging quality is ensured.
Description
Technical Field
The invention relates to the technical field of imaging equipment, in particular to an adjustable core lens mechanism.
Background
With the increasing maturity of the lens industry, the security consciousness of masses is improved, the requirements on security lenses in the market are higher and higher, the original VGA is evolved to the current 4K lens, the evolution also increases a lot of difficulties for the design of an optical system, under the dual requirements of cost and performance, the assembly relation among lenses of the optical system is very sensitive, the imaging quality of the whole lens can be rapidly reduced due to slight decentration, the traditional manual assembly method and automatic assembly equipment cannot meet the system requirements, and therefore, aiming at the lenses, the lenses of the appointed sensitive parts of the optical system are required to be adjusted and corrected during production, so that the imaging quality of the whole lens meets the design requirements.
In the prior art, the lens is regulated and corrected by adopting a reflective type eccentric instrument and a transmission type eccentric instrument, and the requirement of the core regulating method on the eccentric instrument is higher, and the cost of the eccentric instrument is also higher, so that the core regulating cost is high.
Disclosure of Invention
The invention aims to provide an adjustable core lens mechanism which is convenient in core adjustment operation and low in core adjustment cost.
To achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an adjustable core lens mechanism, includes before the camera lens group and is used for fixing the camera lens main barrel of group before the camera lens, the camera lens main barrel with be provided with wave spring between the group before the camera lens, the fastener passes in proper order before the camera lens group with wave spring back with the camera lens main barrel is connected, the elasticity of fastener is adjustable can be through changing wave spring's deflection is adjusted the central axis position of group before the camera lens.
The wave spring comprises a plurality of plane sections and arc-shaped sections connected with two adjacent plane sections, and the fastening piece is matched with the arc-shaped sections.
Wherein, a plurality of arc sections are all crooked towards the front group of camera lens.
Wherein the number of fasteners is equal to the number of arcuate segments.
Wherein the fastener is a screw.
The lens comprises a lens main barrel, a lens front group and a lens front group, wherein a plurality of protruding points are arranged on the contact surface of the lens main barrel and the lens front group, and the protruding points are circumferentially distributed around the central axis of the lens main barrel.
Wherein, the bump is arranged on the end face of the lens main barrel.
Wherein the top surface of the salient point is an outwards convex arc surface.
The end face of the lens main barrel comprises a first arc face, the end face of the lens front group comprises a second arc face, the first arc face is matched with the second arc face, and the protruding points are arranged on the first arc face or the second arc face.
The lens main barrel is provided with an annular first boss, the lens front group is provided with an annular second boss, the wave spring is arranged between the first boss and the second boss, and the convex points are arranged on the inner side of the first boss or the inner side of the second boss.
The beneficial effects are that: the invention provides an adjustable core lens mechanism. In the adjustable core lens mechanism, the waveform spring is arranged between the lens main barrel and the lens front group, and the deformation of the waveform spring can be adjusted by adjusting the tightness of the fastener, so that the inclination angle of the lens front group is adjusted, the coincidence of the axis of the lens front group and the axis of the lens main barrel is ensured, and the imaging quality is ensured.
Drawings
FIG. 1 is a front view of an adjustable core lens mechanism in an exploded state according to an embodiment of the present invention;
FIG. 2 is an exploded view of an adjustable core lens mechanism according to a first embodiment of the present invention;
FIG. 3 is a second exploded view of the adjustable core lens mechanism according to the first embodiment of the present invention;
FIG. 4 is an exploded view of an adjustable core lens mechanism according to a second embodiment of the present invention;
fig. 5 is a partial enlarged view at a in fig. 4.
Wherein:
1. A front lens group; 11. a second boss; 12. a third boss; 121. an end face; 2. a lens main barrel; 21. a first boss; 22. an abutment surface; 23. a bump; 3. a wave spring; 4. a screw; 5. a lens.
Detailed Description
In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the invention more clear, the technical scheme of the invention is further described below by a specific embodiment in combination with the attached drawings.
Example 1
The present embodiment provides an adjustable core lens mechanism, as shown in fig. 1 and 2, which includes a front lens group 1 and a main lens barrel 2 supporting the front lens group 1. The front lens group 1 may have a hollow cylindrical structure, and the lens 5 is disposed inside the front lens group 1. The front lens group 1 can be clamped with the main lens barrel 2 or fixed by fasteners such as screws 4.
In order to improve the imaging quality of the lens mechanism, the positional accuracy of the lens 5 is particularly important, and it is necessary to ensure that the central axis of the lens 5 is aligned with the central axis of the lens main barrel 2. In the prior art, in order to improve the position accuracy of the lens 5, an eccentric instrument with high price is generally adopted for core adjustment, so that the cost is high, and the operation is complex and inconvenient.
In order to solve the above-mentioned problem, in this embodiment, the adjustable core lens mechanism further includes a wave spring 3, the wave spring 3 is located between the front lens group 1 and the main lens barrel 2, and the wave spring 3 is clamped between the front lens group 1 and the main lens barrel 2 after the fastening member fixes the front lens group 1 and the main lens barrel 2. Specifically, the fastening piece may be a screw 4, and the lens front group 1 and the wave spring 3 are both provided with connecting holes, and the lens main barrel 2 is provided with a threaded hole, and the screw 4 sequentially passes through the connecting holes on the lens front group 1 and the wave spring 3 and then is matched with the threaded hole, so that the lens front group 1, the wave spring 3 and the lens main barrel 2 are fixed.
When the core is required to be adjusted, the tightness of the fastener can be adjusted, so that the local deformation of the wave spring 3 is changed, the inclination angle of the front lens group 1 is changed under the action of the elastic force of the wave spring 3, and the central axis position of the front lens group 1 is adjusted, so that the purpose of core adjustment is achieved.
In order to obtain the optimal imaging quality more intuitively, the adjustable core lens mechanism can be connected with the projector in the core adjusting process, the change of the imaging quality in the core adjusting process can be observed, the optimal position of the group 1 in front of the lens is determined, and compared with the prior art, the lens is more intuitively adjusted through an eccentric instrument, the operation is simpler, and the cost is low.
Specifically, the wave spring 3 may be an annular structure including a plurality of planar segments and an arc segment connecting two adjacent planar segments, the arc segment protruding toward one side of the wave spring 3. The arc section in the wave spring 3 can increase the deformation space of the wave spring 3, so that the deformation of the wave spring 3 is easier to adjust, and the core adjustment is convenient.
Optionally, the connecting hole on the wave spring 3 is arranged on the arc section, so that the change of the tightness degree of the screw 4 is more directly and rapidly reflected on the deformation of the wave spring 3, and better imaging quality is conveniently obtained through core adjustment.
In order to facilitate the fixing and core adjustment of the wave spring 3, a plurality of arc-shaped sections in the wave spring 3 can be convexly arranged towards the same side. In this embodiment, the plurality of arc segments are all bent towards the direction of the front lens group 1, so that the wave spring 3 can be stably placed on the lens main barrel 2, and the fixation and the core adjustment are convenient.
Optionally, the number of arc sections can be equal to the number of screws 4, each screw 4 is correspondingly arranged on one arc section, the wave spring 3 can be divided into a plurality of subareas through the cooperation of a plurality of screws 4 and a plurality of arc sections, and the deformation of the corresponding subareas is correspondingly adjusted through adjusting the tightness of each screw 4, so that the inclination angle of the front lens group 1 is better adjusted, and a better core adjusting effect is obtained.
Specifically, as shown in fig. 1 and 2, the lens main barrel 2 is provided with an annular first boss 21, and a plurality of screw holes are uniformly provided on the first boss 21 in the circumferential direction; the lens front group 1 is provided with annular second boss 11, and second boss 11 is provided with the connecting hole in screw hole corresponding position department, and the size of first boss 21 equals with the size of second boss 11, and the arc spring sets up between first boss 21 and second boss 11. The arc spring can be conveniently placed by arranging the first boss 21 and the second boss 11, and the influence on the core adjustment and the imaging effect caused by the change of the position of the arc spring is avoided.
To facilitate positioning of the front lens group 1 and the main lens barrel 2, the front lens group 1 is provided with a third boss 12 protruding downward inside the second boss 11, the main lens barrel 2 is provided with an abutment surface 22 inside the first boss 21, and an end surface 121 of the third boss 12 may be in contact with the abutment surface 22 to further position the front lens group 1 and the main lens barrel 2.
Alternatively, as shown in fig. 2 and 3, the abutment surface 22 may be a first arc surface, the end surface 121 of the third boss 12 may be a second arc surface, and one of the first arc surface and the second arc surface is of a concave structure, and the other is of a convex structure, so that the two surfaces may be better matched and positioned.
Example two
The present embodiment provides an adjustable core lens mechanism, which is different from the first embodiment in that, as shown in fig. 4 and fig. 5, a plurality of protruding points 23 are disposed on the contact surface between the lens main barrel 2 and the lens front group 1, and the plurality of protruding points 23 are circumferentially distributed around the central axis of the lens main barrel 2. The contact area between the lens main barrel 2 and the front lens group 1 can be reduced by arranging the convex points 23, so that the inclination angle of the front lens group 1 relative to the lens main barrel 2 is changed conveniently, and the core adjustment is convenient.
Specifically, the protruding points 23 may be disposed on the abutment surface 22, and the plurality of protruding points 23 are disposed on the abutment surface 22 at uniform intervals, which is beneficial to improving the uniformity of the stress of the front lens group 1.
Optionally, the top surface of the bump 23 may be an arc surface protruding outwards, so that the bump 23 is in line contact with the end surface 121 of the third boss 12, preventing the surface contact from obstructing the tilting of the front lens group 1, and ensuring that the core adjustment can be performed smoothly. In this embodiment, the abutment surface 22 is a concave arc surface, the end surface 121 of the third boss 12 is a convex arc surface, the bump 23 may be a bar-shaped bump, and the bump 23 extends along the radial direction of the abutment surface 22, so that the contact line of the bump 23 and the end surface 121 of the third boss 12 extends along the radial direction of the arc surface, and when the inclination angle of the front lens group 1 changes, the bump 23 can keep good contact with the end surface 121 of the third boss 12.
The foregoing is merely exemplary of the present invention, and those skilled in the art should not be considered as limiting the invention, since modifications may be made in the specific embodiments and application scope of the invention in light of the teachings of the present invention.
Claims (7)
1. The utility model provides an adjustable core lens mechanism, includes before the lens group (1) and is used for fixing before the lens group (1) the main section of thick bamboo (2) of lens, its characterized in that, be provided with wave spring (3) before the main section of thick bamboo (2) of lens with before the lens group (1), the fastener passes in proper order before the lens group (1) with behind wave spring (3) with main section of thick bamboo (2) of lens is connected, the elasticity of fastener is adjustable in order to adjust the central axis position before the lens group (1) through changing the local deflection of wave spring (3);
The wave spring (3) is of an annular structure and comprises a plurality of plane sections and arc-shaped sections for connecting two adjacent plane sections; the fastener passes through the arc-shaped section of the wave spring (3); a plurality of the arc segments are bent towards the front lens group (1);
the contact surface of the lens main barrel (2) and the lens front group (1) is provided with a plurality of protruding points (23), and the protruding points (23) are distributed circumferentially around the central axis of the lens main barrel (2).
2. The adjustable core lens mechanism of claim 1 wherein the number of fasteners is equal to the number of arcuate segments.
3. Adjustable core lens mechanism according to claim 1, characterized in that the fastener is a screw (4).
4. An adjustable core lens mechanism according to claim 1, characterized in that the bumps (23) are provided on an end face (121) of the lens main barrel (2).
5. The adjustable core lens mechanism according to claim 1, wherein the top surface of the protruding point (23) is a convex arc surface.
6. The adjustable core lens mechanism according to claim 1, wherein the end face (121) of the lens main barrel (2) comprises a first circular arc surface, the end face (121) of the lens front group (1) comprises a second circular arc surface, the first circular arc surface and the second circular arc surface are matched, and the protruding point (23) is arranged on the first circular arc surface or the second circular arc surface.
7. The adjustable core lens mechanism according to claim 1, wherein the lens main barrel (2) is provided with an annular first boss (21), the lens front group (1) is provided with an annular second boss (11), the wave spring (3) is disposed between the first boss (21) and the second boss (11), and the bump (23) is disposed inside the first boss (21) or the second boss (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910218299.0A CN109709656B (en) | 2019-03-21 | 2019-03-21 | Adjustable core lens mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910218299.0A CN109709656B (en) | 2019-03-21 | 2019-03-21 | Adjustable core lens mechanism |
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| Publication Number | Publication Date |
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| CN109709656A CN109709656A (en) | 2019-05-03 |
| CN109709656B true CN109709656B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910218299.0A Active CN109709656B (en) | 2019-03-21 | 2019-03-21 | Adjustable core lens mechanism |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579852B (en) * | 2019-09-29 | 2024-01-30 | 腾龙光学（佛山）有限公司 | Selective type aligning resolution structure and aligning lens |
| CN110596848A (en) * | 2019-10-22 | 2019-12-20 | 中国科学院上海光学精密机械研究所 | Vibration-proof two-dimensional optical adjusting frame and using method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053328A (en) * | 2009-10-30 | 2011-05-11 | 富士胶片株式会社 | Lens device |
| CN206226567U (en) * | 2016-11-01 | 2017-06-06 | 杭州海康威视数字技术股份有限公司 | A kind of video camera |
| CN209400774U (en) * | 2019-03-21 | 2019-09-17 | 东莞市宇瞳光学科技股份有限公司 | A kind of adjustable core lens mechanism |
-
2019
- 2019-03-21 CN CN201910218299.0A patent/CN109709656B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053328A (en) * | 2009-10-30 | 2011-05-11 | 富士胶片株式会社 | Lens device |
| CN206226567U (en) * | 2016-11-01 | 2017-06-06 | 杭州海康威视数字技术股份有限公司 | A kind of video camera |
| CN209400774U (en) * | 2019-03-21 | 2019-09-17 | 东莞市宇瞳光学科技股份有限公司 | A kind of adjustable core lens mechanism |
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