CN118091871A - Lens connecting piece and method for improving optical axis deviation of visible light imaging system - Google Patents

Lens connecting piece and method for improving optical axis deviation of visible light imaging system Download PDF

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Publication number
CN118091871A
CN118091871A CN202410153882.9A CN202410153882A CN118091871A CN 118091871 A CN118091871 A CN 118091871A CN 202410153882 A CN202410153882 A CN 202410153882A CN 118091871 A CN118091871 A CN 118091871A
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CN
China
Prior art keywords
vertical
horizontal
adjusting
lens
adjusting block
Prior art date
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Pending
Application number
CN202410153882.9A
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Chinese (zh)
Inventor
张宇浩
郭春雷
李睿智
曹建凯
孙江
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Beijing Institute of Environmental Features
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Beijing Institute of Environmental Features
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Application filed by Beijing Institute of Environmental Features filed Critical Beijing Institute of Environmental Features
Priority to CN202410153882.9A priority Critical patent/CN118091871A/en
Publication of CN118091871A publication Critical patent/CN118091871A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)

Abstract

The invention relates to the technical field of optical imaging, in particular to a lens connecting piece and a method for improving optical axis deviation of a visible light imaging system. The lens connecting piece comprises a vertical adjusting block, a horizontal adjusting block and a connecting seat. Wherein, vertical regulating block passes through vertical adjustment mechanism and installs in the horizontal regulating block, and vertical regulating block can be in the relative horizontal regulating block removal of vertical direction. The horizontal adjusting block is fixedly connected with the connecting seat through a horizontal adjusting mechanism, and the horizontal adjusting block can move relative to the connecting seat in the vertical direction. The image sensor is connected with the vertical adjusting block. When needs are adjusted, through adjusting vertical adjustment mechanism, vertical regulating block can reciprocate relative horizontal regulating block in vertical direction, through adjusting horizontal adjustment mechanism, horizontal regulating block can reciprocate relative connecting seat in the horizontal direction. The purpose of adjusting the vertical axis direction offset of the image sensor is achieved, the coaxiality adjustment of the optical axis of the image sensor and the optical axis of the lens is achieved, and the structure is simple.

Description

Lens connecting piece and method for improving optical axis deviation of visible light imaging system
Technical Field
The invention relates to the technical field of optical imaging, in particular to a lens connecting piece and a method for improving optical axis deviation of a visible light imaging system.
Background
At present, the CMOS and the lens of the visible light imaging system are connected through a C/CS interface ring structure, the coaxiality of an optical axis is determined after assembly is completed, and the coaxiality of the optical axis cannot be adjusted, so that the problem of insufficient aiming precision is caused by the deviation of the consistency of the optical axis, namely, when a field of view changes from the most wide angle to the smallest field of view, a center point is deviated, a target is lost, and the application of the visible light imaging system in the security military field and the anti-unmanned aerial vehicle field is greatly limited. The deviation of the optical axis of the visible light imaging system is mainly caused by the shaking of the visual axis when the zoom lens itself zooms and the dislocation of the CMOS end face center of the visible light imaging system and the optical axis of the lens.
For an ideal zoom lens, it is desirable that the variable power set lens and the compensation set lens can reciprocate linearly along the optical axis. However, due to errors in machining and optical machining, certain deviations always occur due to the influence of normal mechanical clearances, motion backlash and other factors, so that visual axis shaking is unavoidable. For example: the system error is generated when the zoom lens and the compensation lens cannot be completely overlapped with the straight line of the optical axis in the moving process, and accidental error is generated when the uncertainty of the vertical axis position of each fixed focal length of the zoom lens and the compensation lens.
Disclosure of Invention
A first object of the present invention is to provide a lens connection capable of adjusting the coaxiality of an image sensor and an optical axis of a lens.
A second object of the present invention is to provide a method for improving the deviation of the optical axis of a visible light imaging system, so as to improve the consistency of the optical axis of the visible light imaging system.
In order to achieve the first object, a first aspect of the present invention provides a lens connecting piece, including:
The vertical adjusting block comprises a vertical adjusting block body, the vertical adjusting block body is provided with a first through hole penetrating through the vertical adjusting block body, and the vertical adjusting block is used for being connected with an image sensor positioned at the rear side of the lens;
the horizontal adjusting block comprises a horizontal adjusting block body, the horizontal adjusting block body is provided with a second through hole penetrating through the horizontal adjusting block body, the vertical adjusting block is arranged on the horizontal adjusting block through a vertical adjusting mechanism, and the vertical adjusting block can move relative to the horizontal adjusting block in the vertical direction through adjusting the vertical adjusting mechanism; and
The connecting seat is provided with a third through hole, the horizontal adjusting block is arranged on the connecting seat through the horizontal adjusting mechanism, and the horizontal adjusting block can move relative to the connecting seat in the horizontal direction through adjusting the horizontal adjusting mechanism, and the first through hole, the second through hole and the third through hole form a channel for light to pass through;
one end of the connecting seat is used for being connected with the base of the lens to be installed, and the other end of the connecting seat is used for being connected with the lens.
Optionally, the vertical adjustment mechanism comprises:
the two vertical embedded blocks are arranged on two sides of the vertical adjusting block body along the vertical direction;
The first embedded groove is arranged on one end face of the horizontal adjusting block body and is provided with two vertical embedded grooves matched with the two vertical embedded blocks;
The two vertical adjusting screw holes are arranged on the horizontal adjusting block body and are respectively communicated with the two vertical embedding grooves, the two vertical embedding blocks are respectively embedded in the two vertical embedding grooves, a vertical adjusting gap is formed between the vertical embedding blocks and the embedded vertical embedding grooves, and the vertical adjusting block body is positioned in the first embedding groove; and
The two vertical adjusting screws are respectively in threaded fit with the two vertical adjusting screw holes, the front ends of the two vertical adjusting screws are respectively propped against the two vertical embedded blocks, and the positions of the vertical adjusting blocks in the vertical direction can be adjusted by rotating the two vertical adjusting screws.
Optionally, the vertical adjustment gap is less than or equal to 2mm.
Optionally, the level adjustment mechanism comprises:
The two horizontal embedded blocks are arranged at two sides of the horizontal adjusting block body;
The two second embedded grooves are arranged on one end face of the connecting seat, are communicated with the third through holes and are positioned on two opposite sides of the third through holes;
The two horizontal adjusting screw holes are arranged on the connecting seat and are respectively communicated with the two second embedding grooves, when the two horizontal embedded blocks are embedded in the two second embedding grooves, a horizontal adjusting gap is reserved between the horizontal embedded blocks and the embedded second embedding grooves, and the horizontal adjusting block body is positioned in the third through hole; and
The two horizontal adjusting screws are respectively in threaded fit with the two horizontal adjusting screw holes, the front ends of the two horizontal adjusting screws are respectively propped against the two horizontal embedded blocks, and the positions of the horizontal adjusting blocks in the horizontal direction can be adjusted by rotating the two horizontal adjusting screws. .
Optionally, the horizontal adjustment gap is less than or equal to 2mm.
Optionally, the connecting seat and the vertical adjusting block body are both circular plate-shaped; and/or
The first through hole and the second through hole are round holes.
Optionally, the horizontal adjusting block body is a rectangular plate.
In order to achieve the second object, the present invention also provides a method for improving the deviation of the optical axis of the visible light imaging system, wherein the lens of the visible light imaging system is connected with the base of the visible light imaging system through the lens connecting piece in any implementation manner of the first aspect, and the image sensor of the visible light imaging system is connected with the vertical adjusting block through the first through hole;
Opening a cross cursor of a visible light imaging system, aligning the position of the cross cursor to the center of a target when the visual field is small, then controlling the zooming of a lens to change the visual field from small to large, observing the offset trend of the center of the visual field, adjusting the vertical adjusting mechanism and/or the horizontal adjusting mechanism to move up and down and/or left and right of an image sensor of the visible light imaging system to enable the center of the visual field to move in the opposite direction of the offset direction of the center of the target, then observing the offset trend of the center of the visual field, and repeatedly adjusting and improving the optical axis deviation of the visible light imaging system.
Optionally, glue is used to fasten the locking position and threads of the visible light imaging system after the adjustment is completed.
Optionally, the stress deflection of the lens connection is less than 0.006mm;
The eccentric distance between the optical axes of each lens group is less than or equal to 0.01mm and the inclination angle is less than or equal to 5' in the process of adjusting the lens.
The technical scheme of the invention has the following advantages:
The lens connecting piece provided by the invention comprises a vertical adjusting block, a horizontal adjusting block and a connecting seat. Wherein, vertical regulating block passes through vertical adjustment mechanism and installs in the horizontal regulating block, and through adjusting vertical adjustment mechanism, vertical regulating block can be in the relative horizontal regulating block removal of vertical direction. The horizontal adjusting block is fixedly connected with the connecting seat through a horizontal adjusting mechanism, and can move relative to the connecting seat in the vertical direction through adjusting the horizontal adjusting mechanism. The image sensor is connected with the vertical adjusting block. When needs are adjusted, through adjusting vertical adjustment mechanism, vertical regulating block can reciprocate relative horizontal regulating block in vertical direction, through adjusting horizontal adjustment mechanism, horizontal regulating block can reciprocate relative connecting seat in the horizontal direction. The purpose of adjusting the vertical axis direction offset of the image sensor is achieved, the coaxiality adjustment of the optical axis of the image sensor and the optical axis of the lens is achieved, and the structure is simple.
According to the method for improving the optical axis deviation of the visible light imaging system, the lens of the visible light imaging system is connected with the base of the visible light imaging system through the lens connecting piece, and the image sensor of the visible light imaging system is connected with the vertical adjusting block through the first through hole. The cross cursor of the visible light imaging system is opened, the position of the cross cursor is aligned to the center of a target when the visual field is small, then the zooming of the lens is controlled, the visual field is changed from small to large, the offset trend of the center of the visual field is observed, the vertical adjusting mechanism and/or the horizontal adjusting mechanism are/is adjusted to move up and down and/or left and right, the center of the visual field is moved to the opposite direction of the offset direction of the center of the target, then the offset trend of the center of the visual field is observed, the offset of the optical axis of the visible light imaging system is repeatedly adjusted and improved, and the consistency of the optical axis of the visible light imaging system is greatly improved.
Drawings
The drawings of the present invention are provided for illustrative purposes only and the proportion and the number of the parts in the drawings do not necessarily coincide with the actual product.
FIG. 1 is a schematic front view of a lens assembly according to a first embodiment of the present invention;
FIG. 2 is a schematic elevational view of a vertical adjustment block according to a first embodiment of the present invention;
FIG. 3 is a left side schematic view of FIG. 2;
FIG. 4 is a schematic front view of a horizontal adjusting block according to a first embodiment of the present invention;
FIG. 5 is a schematic top view of the horizontal adjustment block of FIG. 4;
FIG. 6 is a schematic view in section A-A of FIG. 4;
FIG. 7 is a schematic rear view of FIG. 4;
FIG. 8 is a schematic front view of a connecting seat according to a first embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of B-B of FIG. 8;
FIG. 10 is a left side schematic view of FIG. 8;
fig. 11 is a schematic rear view of fig. 8.
In the figure:
1: a vertical adjustment block;
11: a vertical adjustment block body;
111: a first through hole;
12: a vertical slug;
2: a horizontal adjustment block;
21: a horizontal adjustment block body;
211: a second through hole;
212: a first embedded groove;
2121: a vertical insertion groove;
213: vertical adjusting screw holes;
22: a horizontal slug;
3: a connecting seat;
31: a third through hole;
32: a second insertion groove;
33: a horizontal adjusting screw hole;
4: a vertical adjustment screw;
5: and (3) horizontally adjusting the screw.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, the lens connecting piece provided by the embodiment of the invention comprises a vertical adjusting block 1, a horizontal adjusting block 2 and a connecting seat 3. Wherein, vertical regulating block 1 passes through vertical adjustment mechanism and installs in horizontal regulating block 2, and through adjusting vertical adjustment mechanism, vertical regulating block 1 can be in the relative horizontal regulating block 2 removal of vertical direction. The horizontal adjusting block 2 is fixedly connected with the connecting seat 3 through a horizontal adjusting mechanism, and the horizontal adjusting block 2 can move relative to the connecting seat 3 in the vertical direction through adjusting the horizontal adjusting mechanism.
Referring to fig. 2 and 3, the vertical adjustment block 1 includes a vertical adjustment block body 11, the vertical adjustment block body 11 having a first through hole 111 penetrating the vertical adjustment block body 11, the vertical adjustment block 1 being for connection with an image sensor (e.g., CMOS of a visible light imaging system) of a rear side of a lens.
Referring to fig. 4 and 7, the leveling block 2 includes a leveling block body 21, and the leveling block body 21 has a second through hole 211 penetrating the leveling block body 21.
Referring to fig. 8 and 11, the connection holder 3 has a third through hole 31. One end of the connecting seat 3 is used for being connected with a base of the visible light imaging system, and the other end is used for being connected with a lens of the visible light imaging system.
Referring to fig. 1, the first through hole 111, the second through hole 211, and the third through hole 31 form a passage through which light passes.
Taking a visible light imaging system as an example, when the camera lens connecting piece is used, the camera lens connecting piece is positioned between a camera lens of the visible light imaging system and the machine base, one end of the connecting seat 3 is connected with the machine base of the visible light imaging system, and the other end of the connecting seat is connected with the camera lens of the visible light imaging system. The image sensor of the visible light imaging system is connected with the vertical adjusting block 1. When needs are adjusted, through adjusting vertical adjustment mechanism, vertical regulating block 1 can reciprocate relative horizontal regulating block 2 in the vertical direction, through adjusting horizontal adjustment mechanism, horizontal regulating block 2 can reciprocate relative connecting seat 3 in the horizontal direction. The purpose of adjusting the vertical axis direction offset of the image sensor is achieved, the coaxiality adjustment of the optical axis of the image sensor and the optical axis of the lens is achieved, and the structure is simple.
In a preferred embodiment, the range of the vertical and horizontal movement distance of the image sensor is + -2 mm, and lenses of different specifications can be adapted.
In one embodiment of the imaging system requiring a focusing function, the lens connection member has a focusing function, i.e., an axial front-rear adjustment function, and the structure is provided on the connection base 3, and is divided into two parts in the axial direction, which are relatively movable in the axial direction, one part being connected to the image sensor and the other part being connected to the lens, and in a specific example, the image sensor and the lens rear lens are relatively moved within a range of 17.562mm±1mm to satisfy the rear focus adjustment at the time of adjustment. The specific structure and adjustment mode can be referred to the existing zoom ring, and will not be described herein.
Referring to fig. 1-7, in some embodiments, the vertical adjustment mechanism includes two vertical inserts 12, a first insert slot 212, two vertical adjustment screw holes 213, and two vertical adjustment screws 4. Wherein two vertical inserts 12 are provided along a vertical direction on both sides of the vertical adjustment block body 11. A first insert groove 212 is provided on one end surface of the horizontal adjustment block body 21, the first insert groove 212 having two vertical insert grooves 2121 that match the two vertical insert blocks 12. The two vertical adjusting screw holes 213 are formed in the horizontal adjusting block body 21 and are respectively communicated with the two vertical embedding grooves 2121, the two vertical embedding blocks 12 are respectively embedded in the two vertical embedding grooves 2121, a vertical adjusting gap is formed between the vertical embedding blocks 12 and the embedded vertical embedding grooves 2121, and the vertical adjusting block body 11 is located in the first embedding groove 21. The two vertical adjusting screws 4 are respectively in threaded fit with the two vertical adjusting screw holes 213, the front ends of the two vertical adjusting screws 4 are respectively propped against the two vertical embedded blocks 12, and the installation and the fixation of the vertical adjusting block 1 are realized. The position of the vertical adjustment block 1 in the vertical direction can be adjusted within the vertical adjustment gap by rotating the two vertical adjustment screws 4. Preferably, the vertical adjustment gap is less than or equal to 2mm. The size of the vertical adjustment gap is the adjustment range.
Referring to fig. 1, 3-11, in some embodiments, the horizontal adjustment mechanism includes two horizontal inserts 22, two second insert grooves 32, two horizontal adjustment screw holes 33, and two horizontal adjustment screws 5. Wherein two horizontal inserts 22 are provided on both sides of the horizontal adjustment block body 21. Two second embedded grooves 32 are provided on one end face of the connecting seat 3, and are both communicated with the third through hole 31, and are located on opposite sides of the third through hole 31. The two horizontal adjusting screw holes 33 are arranged on the connecting seat 3 and are respectively communicated with the two second embedding grooves 32, when the two horizontal embedded blocks 22 are embedded in the two second embedding grooves 32, a horizontal adjusting gap is reserved between the horizontal embedded blocks 22 and the embedded second embedding grooves 32, and the horizontal adjusting block body 21 is positioned in the third through hole 31. The two horizontal adjusting screws 5 are respectively in threaded fit with the two horizontal adjusting screw holes 33, the front ends of the two horizontal adjusting screws 5 are respectively propped against the two horizontal embedded blocks 22, the installation and fixation of the horizontal adjusting block 2 are realized, and the position of the horizontal adjusting block 2 in the horizontal direction can be adjusted by rotating the two horizontal adjusting screws 5. Preferably, the horizontal adjustment gap is 2mm or less. The size of the horizontal adjustment gap is the adjustment range.
In one embodiment, the connection base 3 and the vertical adjustment block body 11 are both disk-shaped. In one embodiment, the first through hole 111 and the second through hole 211 are circular holes. In one embodiment, the horizontal adjustment block body 21 is a rectangular plate. The third through hole 31 is a rectangular hole or an irregular hole capable of accommodating a rectangular plate.
It is to be noted that the broken lines in fig. 1 are portions where the vertical adjustment screw 4, the vertical insert 12, the horizontal adjustment screw 5, and the horizontal insert 22 are shielded.
Example two
According to the method for improving the optical axis deviation of the visible light imaging system, the lens of the visible light imaging system is connected with the base of the visible light imaging system through any one of the lens connecting pieces in the embodiment, and the image sensor of the visible light imaging system is connected with the vertical adjusting block through the first through hole.
When coaxiality adjustment is needed, a cross cursor of the visible light imaging system is opened, the position of the cross cursor is aligned to the center of a target in a small view field, then zooming of a lens is controlled, the view field is changed from small to large, the offset trend of the center of the view field is observed, an image sensor of the visible light imaging system of the vertical adjusting mechanism and/or the horizontal adjusting mechanism is adjusted to move up and down and/or left and right, the center of the view field is moved to the opposite direction of the offset direction of the center of the target, then the offset trend of the center of the view field is observed, and the offset condition of an imaging module can be corrected by repeated adjustment, so that coaxiality is improved. The optical axis movement amount is less than or equal to 10 pixels in the zooming process from the small view field to the large view field under the normal temperature condition, the consistency of the optical axis of the visible light imaging system is greatly improved, the volume is maintained, the cost is reduced, and the precision is increased.
In order to avoid looseness during transportation and vibration, in some embodiments, glue is used to secondarily fasten all optical system locking positions and the inside of the threads after adjustment is completed.
In order to further improve the deviation condition of the optical axis of the visible light imaging system, in some embodiments, the design link and the assembly link can be improved. For example, the stress deflection of the lens connection is guaranteed to be less than 0.006mm during the design phase. The method can be realized by selecting materials, and the specific materials are existing materials and are not described in detail herein. In the whole assembly process, the eccentric distance between the optical axes of each lens group is less than or equal to 0.01mm and the inclination angle is less than or equal to 5' in the assembly and adjustment process of the lens.
The present invention is not described in detail in the prior art or in the common general knowledge.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: not every embodiment contains only one independent technical scheme, and all technical features mentioned in every embodiment can be combined in any way to form other implementations which can be understood by those skilled in the art in case of no scheme conflict.
In addition, modifications may be made to the embodiments described in the foregoing, or equivalents may be substituted for elements thereof without departing from the scope of the invention, so that the essence of the corresponding embodiments does not depart from the spirit and scope of the embodiments of the invention.

Claims (10)

1. A lens connection piece, comprising:
The vertical adjusting block comprises a vertical adjusting block body, the vertical adjusting block body is provided with a first through hole penetrating through the vertical adjusting block body, and the vertical adjusting block is used for being connected with an image sensor positioned at the rear side of the lens;
The horizontal adjusting block comprises a horizontal adjusting block body, the horizontal adjusting block body is provided with a second through hole penetrating through the horizontal adjusting block body, the vertical adjusting block is installed on the horizontal adjusting block through a vertical adjusting mechanism, and the vertical adjusting block can move relative to the horizontal adjusting block in the vertical direction through adjusting the vertical adjusting mechanism; and
The connecting seat is provided with a third through hole, the horizontal adjusting block is arranged on the connecting seat through a horizontal adjusting mechanism, the horizontal adjusting block can move relative to the connecting seat in the horizontal direction through adjusting the horizontal adjusting mechanism, and the first through hole, the second through hole and the third through hole form a channel for light to pass through;
One end of the connecting seat is used for being connected with the base of the lens to be installed, and the other end of the connecting seat is used for being connected with the lens.
2. The lens connection of claim 1, wherein:
the vertical adjustment mechanism includes:
the two vertical embedded blocks are arranged on two sides of the vertical adjusting block body along the vertical direction;
The first embedded groove is arranged on one end face of the horizontal adjusting block body and is provided with two vertical embedded grooves matched with the two vertical embedded blocks;
The two vertical adjusting screw holes are formed in the horizontal adjusting block body and are respectively communicated with the two vertical embedding grooves, the two vertical embedding blocks are respectively embedded in the two vertical embedding grooves, a vertical adjusting gap is formed between each vertical embedding block and each embedded vertical embedding groove, and the vertical adjusting block body is located in the first embedding groove; and
The two vertical adjusting screws are respectively in threaded fit with the two vertical adjusting screw holes, the front ends of the two vertical adjusting screws are respectively propped against the two vertical embedded blocks, and the positions of the vertical adjusting blocks in the vertical direction can be adjusted by rotating the two vertical adjusting screws.
3. The lens connection of claim 2, wherein:
the vertical adjustment gap is less than or equal to 2mm.
4. The lens connection of claim 1, wherein:
The level adjustment mechanism includes:
the two horizontal embedded blocks are arranged on two sides of the horizontal adjusting block body;
the two second embedded grooves are arranged on one end face of the connecting seat, are communicated with the third through holes and are positioned on two opposite sides of the third through holes;
The two horizontal adjusting screw holes are arranged on the connecting seat and are respectively communicated with the two second embedding grooves, when the two horizontal embedded blocks are embedded in the two second embedding grooves, a horizontal adjusting gap is reserved between the horizontal embedded blocks and the embedded second embedding grooves, and the horizontal adjusting block body is positioned in the third through hole; and
The two horizontal adjusting screws are respectively in threaded fit with the two horizontal adjusting screw holes, the front ends of the two horizontal adjusting screws are respectively propped against the two horizontal embedded blocks, and the positions of the horizontal adjusting blocks in the horizontal direction can be adjusted by rotating the two horizontal adjusting screws.
5. A lens connection according to claim 3, wherein:
The horizontal adjustment gap is less than or equal to 2mm.
6. The lens connection of claim 1, wherein:
The connecting seat and the vertical adjusting block body are both circular plate-shaped; and/or
The first through hole and the second through hole are round holes.
7. The lens connection of claim 6, wherein:
the horizontal adjusting block body is a rectangular plate.
8. A method for improving optical axis deviation of a visible light imaging system is characterized by comprising the following steps: a lens of the visible light imaging system is connected with a base of the visible light imaging system through the lens connecting piece according to any one of claims 1 to 7, and an image sensor of the visible light imaging system is connected with the vertical adjusting block through a first through hole;
Opening a cross cursor of a visible light imaging system, aligning the position of the cross cursor to the center of a target when the visual field is small, then controlling the zooming of a lens to change the visual field from small to large, observing the offset trend of the center of the visual field, adjusting the vertical adjusting mechanism and/or the horizontal adjusting mechanism to move up and down and/or left and right of an image sensor of the visible light imaging system to enable the center of the visual field to move in the opposite direction of the offset direction of the center of the target, then observing the offset trend of the center of the visual field, and repeatedly adjusting and improving the optical axis deviation of the visible light imaging system.
9. The method according to claim 8, wherein:
after the adjustment is finished, the locking position and the thread of the visible light imaging system are fastened by glue.
10. The method according to claim 8, wherein:
The stress deformation of the lens connecting piece is smaller than 0.006mm;
The eccentric distance between the optical axes of each lens group is less than or equal to 0.01mm and the inclination angle is less than or equal to 5' in the process of adjusting the lens.
CN202410153882.9A 2024-02-02 2024-02-02 Lens connecting piece and method for improving optical axis deviation of visible light imaging system Pending CN118091871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410153882.9A CN118091871A (en) 2024-02-02 2024-02-02 Lens connecting piece and method for improving optical axis deviation of visible light imaging system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410153882.9A CN118091871A (en) 2024-02-02 2024-02-02 Lens connecting piece and method for improving optical axis deviation of visible light imaging system

Publications (1)

Publication Number Publication Date
CN118091871A true CN118091871A (en) 2024-05-28

Family

ID=91158077

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410153882.9A Pending CN118091871A (en) 2024-02-02 2024-02-02 Lens connecting piece and method for improving optical axis deviation of visible light imaging system

Country Status (1)

Country Link
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