CN109668527B - Adjustable optical auto-collimator - Google Patents
Adjustable optical auto-collimator Download PDFInfo
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- CN109668527B CN109668527B CN201910154310.1A CN201910154310A CN109668527B CN 109668527 B CN109668527 B CN 109668527B CN 201910154310 A CN201910154310 A CN 201910154310A CN 109668527 B CN109668527 B CN 109668527B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 54
- 238000003384 imaging method Methods 0.000 claims abstract description 65
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 7
- 238000013016 damping Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 238000003825 pressing Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/30—Collimators
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- Optics & Photonics (AREA)
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Abstract
The invention discloses an adjustable optical autocollimator, which belongs to the field of optical instruments, and comprises a lens positioning and clamping structure, a connecting cylinder structure and an imaging CCD (charge coupled device) adjusting structure, wherein the lens positioning and clamping structure comprises a left-side angle cone fixing structure, an attenuation sheet fixing structure, a lower-side angle cone fixing structure, a prism positioning and clamping structure and a double-gluing lens fixing structure; the imaging CCD is adjustable in position; the whole machine can be disassembled or assembled quickly, the structure is simple, and the requirement on the machining precision of parts is low; the whole device has light weight and small size, and can greatly reduce the material cost when being used for mass production.
Description
Technical Field
The present invention relates to the field of optical instruments, and more particularly to an adjustable optical autocollimator.
Background
An autocollimator, also called an "autocollimator" or "optical flatness inspection" is a measuring instrument that converts angular measurements into linear measurements using the principle of autocollimation of light. The device is widely used for measuring small angles, flatness of a flat plate, flatness and parallelism of a guide rail and the like. Mainly comprises an optical autocollimator, a photoelectric autocollimator, a laser collimator and the like.
In the existing optical products, especially optical collimator products, various optical lenses including prisms are required, and the positions and angles of the prisms or other lenses used are generally very strict. In practical applications, most products improve positioning accuracy by improving machining accuracy and assembly accuracy, that is, the optical lens is directly fixed on the lens barrel, so that too high requirements are set for machining accuracy and assembly accuracy. In almost all cases, corresponding errors are inevitably generated in the process of machining, assembling and the like, and in such cases, the lenses assembled according to the normal process are difficult to meet the use requirements.
In order to solve the assembly problem caused by the processing problem, part of products adopt an adjustable technology, namely the processing precision requirement is reduced, and the device meets the requirement through the later assembly adjustment. In the prior art, the prism assembly is generally directly fixed on the lens barrel to adjust other lenses, and the structure is often that the assembly is separated, and each adjusting part is independent from each other. Therefore, more assemblies are caused, the assembly parts have preparation tolerance, the accumulated tolerance of the assembled parts is larger, the accurate positioning of the lens is not facilitated, multiple times of debugging are needed, the installation and adjustment process is needed to be completed in two parts, and the installation or debugging efficiency is lower.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide an adjustable optical auto-collimator, wherein an optical lens of the adjustable optical auto-collimator is accurate in positioning, easy to install and convenient to adjust; the imaging CCD is adjustable in position; the whole machine can be disassembled or assembled quickly, the structure is simple, and the requirement on the machining precision of parts is low; the whole device has light weight and small size, and can greatly reduce the material cost when being used for mass production.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme.
An adjustable optical autocollimator comprises a lens positioning and clamping structure, a connecting cylinder structure and an imaging CCD adjusting structure, wherein the lens positioning and clamping structure comprises a left-side cone fixing structure, an attenuation sheet fixing structure, a lower-side cone fixing structure, a prism positioning and clamping structure and a double-gluing lens fixing structure, the prism positioning and clamping structure comprises a lens cone, the imaging CCD adjusting structure can adjust the position of the imaging CCD in a fine adjustment mode to enable a photosensitive surface of the imaging CCD to be positioned at the focal length of the double-gluing lens, the left-side cone fixing structure comprises a left-side end cover and a left-side cone, the left-side end cover is fixedly connected with the left end of the lens cone, the left-side cone is connected with the inner side of the lens cone, which is close to the left-side end cover, the attenuation sheet fixing structure comprises an upper-side attenuation sheet cylinder, an attenuation sheet mounting cylinder and an attenuation sheet end cover, the upper-side attenuation sheet cylinder is fixedly connected with the upper end of the lens cone, the damping sheet mounting cylinder is connected with the upper end of the upper damping sheet cylinder, the damping sheet end cover is connected with the upper end of the damping sheet mounting cylinder, the damping sheet component is arranged on the inner side of the damping sheet mounting cylinder, the lower angle cone fixing structure comprises a lower angle cone cylinder, a lower end cover and a lower angle cone, the lower angle cone cylinder is connected with the lower end of the lens cylinder, the lower angle cone cylinder and the upper damping sheet cylinder are symmetrical relative to the lens cylinder, a prism is arranged on the inner side of the lens cylinder, the prism is positioned between the lower angle cone cylinder and the upper damping sheet cylinder, the lower angle cone is connected with the inner side of the lower angle cone cylinder, the lower end cover is connected with the lower end of the lower angle cone cylinder, the double-glued lens fixing structure comprises a double-glued lens and a right end cover, the right end cover is connected with the right end of the lens cylinder, the double-glued lens is connected with the inner side close to the right end cover, one end of the connecting cylinder structure is connected with the right end of the lens cylinder, the imaging CCD adjusting structure comprises an upper imaging CCD fixing seat, a lower imaging CCD fixing seat and an imaging CCD, wherein the adjusting fixing seat and the lower imaging CCD fixing seat are both connected to the right end of the connecting cylinder structure, the inner end of the lower imaging CCD fixing seat, which is far away from the connecting cylinder structure, is fixedly connected with the adjusting fixing seat, a threaded hole is cut in the adjusting fixing seat, an adjusting rod is connected in the threaded hole, the imaging CCD is positioned between the lower imaging CCD fixing seat and the upper imaging CCD fixing seat, the lower end of the imaging CCD is fixedly connected with a CCD mounting plate, the lower end of the CCD mounting plate is in transmission connection with the adjusting rod, and an optical lens of the imaging CCD is accurately positioned, easy to install and convenient to adjust; the imaging CCD is adjustable in position; the whole machine can be disassembled or assembled quickly, the structure is simple, and the requirement on the machining precision of parts is low; the whole device has light weight and small size, and can greatly reduce the material cost when being used for mass production.
Further, the left end cover is connected to the left end of the lens cone through threads or screws, the left end cover is of a cylindrical structure, one end of the left end cover is provided with a third groove, and the size of the third groove is related to the shape of the left pyramid; the left end cover fixes the left angle cone in the groove of the left end face of the lens cone through threads or screws; the left end cover fixes the left angle cone on the lens cone in a mode of pressing the outer end face of the left angle cone; the part of the structure is positioned through the optical surface of the left-side angle cone, and is locked in a mode that the left-side end cover presses the back surface of the left-side angle cone, so that high-precision positioning can be realized; the lower end cover is connected to the lower end of the lower angle cone through threads or screws, and the right end cover is connected to the right end of the lens cone through threads or screws, so that the lens cone is convenient to install and detach.
Further, the attenuation sheet assembly comprises a first-stage attenuation sheet and a second-stage attenuation sheet; the first-stage attenuation sheet is positioned between the attenuation sheet mounting cylinder and the upper attenuation sheet cylinder, and the attenuation sheet mounting cylinder and the upper attenuation sheet cylinder are fixed in a threaded connection mode; the second-stage attenuation sheet is positioned between the attenuation sheet mounting cylinder and the attenuation sheet end cover, the second-stage attenuation sheet is fixed through the form of screw connection between the attenuation sheet mounting cylinder and the attenuation sheet end cover, the first-stage attenuation sheet and the second-stage attenuation sheet can be mounted according to actual conditions by the aid of the structure, and when the first-stage attenuation sheet is only needed, the second-stage attenuation sheet can be conveniently and rapidly detached without removing other structures, so that a quick-dismantling effect is achieved.
Further, a left rubber pad is connected between the left end cover and the lens barrel, and a right rubber pad is connected between the right end cover and the lens barrel; and a lower rubber pad is connected between the lower end cover and the lower angle cone barrel, so that the buffer extrusion effect is achieved.
Further, the right end part of the adjusting rod is fixedly connected with an adjusting knob, and the adjusting knob is rotated to drive the adjusting rod to rotate so as to move with the CCD mounting plate, so that the adjusting function of the imaging CCD is realized.
Further, the lower side pyramid cylinder is of a cylindrical structure with flanges at the upper end and the lower end, the upper end flange is connected with the lens barrel, the lower end flange is connected with the lower side pyramid, the lower side end cover is of a cylindrical structure, one end of the lower side end cover is provided with a first groove, and the size of the first groove is related to the shape of the lower side pyramid; the lower end cover fixes the lower angle cone on the lower end flange of the lower angle cone through threads or screws; the lower end cover fixes the lower cone on the lower cone in a mode of pressing the lower end face of the lower cone; the part of the structure is positioned through the lower angular cone optical surface and locked in a pressing mode of the lower end cover, so that high-precision positioning can be realized; the part is designed into a quick-dismantling structure, so that the device can be used normally in calibration, and can be quickly and conveniently taken down for storage in test.
Further, the right side end cover is cylindric structure, the lens cone right-hand member is cut out and is had the flange annular groove, right side end cover tip and flange annular groove phase-match, and the right side end cover tip is cut out and is had the second recess, and the left side curved surface of two glued lenses is compressed tightly to lens cone right side flange annular groove edge at the in-process of locking, and the right side curved surface of two glued lenses is compressed tightly to the second recess edge of right side end cover, and then realizes the location, the locking function to two glued lenses.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) The optical lens in the scheme has accurate positioning, is easy to install and is convenient to adjust; the imaging CCD is adjustable in position; the whole machine can be disassembled or assembled quickly, the structure is simple, and the requirement on the machining precision of parts is low; the whole device has light weight and small size, and can greatly reduce the material cost when being used for mass production.
(2) The left end cover is connected to the left end of the lens cone through threads or screws, the left end cover is of a cylindrical structure, one end of the left end cover is provided with a third groove, and the size of the third groove is related to the shape of a left pyramid; the left end cover fixes the left angle cone in the groove of the left end face of the lens cone through threads or screws; the left end cover fixes the left angle cone on the lens cone in a mode of pressing the outer end face of the left angle cone; the part of the structure is positioned through the optical surface of the left-side angle cone, and is locked in a mode that the left-side end cover presses the back surface of the left-side angle cone, so that high-precision positioning can be realized; the lower end cover is connected to the lower end of the lower angle cone through threads or screws, and the right end cover is connected to the right end of the lens cone through threads or screws, so that the lens cone is convenient to install and detach.
(3) The attenuation sheet assembly comprises a first-stage attenuation sheet and a second-stage attenuation sheet; the first-stage attenuation sheet is positioned between the attenuation sheet mounting cylinder and the upper attenuation sheet cylinder, and the attenuation sheet mounting cylinder and the upper attenuation sheet cylinder are fixed in a threaded connection mode; the second-stage attenuation sheet is positioned between the attenuation sheet mounting cylinder and the attenuation sheet end cover, the second-stage attenuation sheet is fixed through the form of screw connection between the attenuation sheet mounting cylinder and the attenuation sheet end cover, the first-stage attenuation sheet and the second-stage attenuation sheet can be mounted according to actual conditions by the aid of the structure, and when the first-stage attenuation sheet is only needed, the second-stage attenuation sheet can be conveniently and rapidly dismounted without removing other structures, so that a quick dismounting effect is achieved.
(4) A left rubber pad is connected between the left end cover and the lens barrel, and a right rubber pad is connected between the right end cover and the lens barrel; a lower rubber pad is connected between the lower end cover and the lower angle cone barrel, so as to play a role in buffering extrusion.
(5) The right end part of the adjusting rod is fixedly connected with an adjusting knob, and the adjusting knob is rotated to drive the adjusting rod to rotate so as to move with the CCD mounting plate, thereby realizing the adjusting function of the imaging CCD.
(6) The lower side pyramid cylinder is of a cylindrical structure with flanges at the upper end and the lower end, the upper end flange is connected with the lens barrel, the lower end flange is connected with the lower side pyramid, the lower side end cover is of a cylindrical structure, one end of the lower side end cover is provided with a first groove, and the size of the first groove is related to the shape of the lower side pyramid; the lower end cover fixes the lower angle cone on the lower end flange of the lower angle cone through threads or screws; the lower end cover fixes the lower cone on the lower cone in a mode of pressing the lower end face of the lower cone; the part of the structure is positioned through the lower angular cone optical surface and locked in a pressing mode of the lower end cover, so that high-precision positioning can be realized; the part is designed into a quick-dismantling structure, so that the device can be used normally in calibration, and can be quickly and conveniently taken down for storage in test.
(7) The right side end cover is cylindric structure, and the lens cone right-hand member is excavated there is flange annular groove, and right side end cover tip and flange annular groove assorted, and right side end cover tip is excavated there is the second recess, and the left side curved surface of two glued lenses is compressed tightly to lens cone right side flange annular groove edge at the in-process of locking, and the right side curved surface of two glued lenses is compressed tightly to the second recess edge of right side end cover, and then realizes the location, the locking function to two glued lenses.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is a light path diagram of the optical element to be measured in the state that the reflecting surface of the optical element to be measured is not perpendicular to the axis of the lens to be measured;
fig. 4 is a light path diagram of the optical element to be measured in the state that the reflecting surface of the optical element to be measured is perpendicular to the axis of the lens to be measured.
The reference numerals in the figures illustrate:
the device comprises an 11 left end cover, a 12 left rubber pad, a 13 left pyramid, a 2 prism positioning and clamping structure, a 31 upper attenuating piece cylinder, a 32 attenuating piece mounting cylinder, a 33 attenuating piece end cover, a 34 first-stage attenuating piece, a 35 second-stage attenuating piece, a 41 double-cemented lens, a 42 right end cover, a 5 connecting cylinder structure, a 6 imaging CCD adjusting structure, a 61 adjusting fixing seat, a 62 adjusting knob, a 63 upper imaging CCD fixing seat, a 64 lower imaging CCD fixing seat, a 65 adjusting rod, a 66 imaging CCD, a 67 CCD mounting plate, a 71 lower pyramid cylinder, a 81 lower end cover, a 82 lower rubber pad and a 83 lower pyramid.
Detailed Description
The technical solutions in 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; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1:
referring to fig. 1 and 2, an adjustable optical auto-collimator comprises a lens positioning and clamping structure, a connecting cylinder structure 5 and an imaging CCD adjusting structure 6, wherein the lens positioning and clamping structure comprises a left side cone fixing structure, an attenuation sheet fixing structure, a lower side cone fixing structure, a prism positioning and clamping structure 2 and a dual-cemented lens fixing structure, the prism positioning and clamping structure 2 comprises a lens barrel, the imaging CCD adjusting structure 6 can adjust the position of an imaging CCD 66 in a fine tuning manner to enable a photosensitive surface to be positioned at the focal position of the dual-cemented lens 41, the left side cone fixing structure comprises a left side end cover 11 and a left side cone 13, the left side end cover 11 is fixedly connected to the left end of the lens barrel, the left side cone 13 is connected to the inner side of the lens barrel close to the left side end cover 11, the attenuation sheet fixing structure comprises an upper side attenuation sheet cylinder 31, an attenuation sheet mounting cylinder 32 and an attenuation sheet end cover 33, the upper side attenuation sheet cylinder 31 is fixedly connected to the upper end of the lens barrel, the attenuation sheet mounting cylinder 32 is connected to the upper end of the upper side attenuation sheet cylinder 31, the attenuation sheet end cover 33 is connected to the upper end of the attenuation sheet mounting cylinder 32, the attenuation sheet assembly is arranged at the inner side of the attenuation sheet mounting cylinder 32, the lower side angle cone fixing structure comprises a lower side angle cone cylinder 71, a lower side end cover 81 and a lower side angle cone 83, the lower side angle cone cylinder 71 is connected to the lower end of the lens barrel, the lower side angle cone cylinder 71 and the upper side attenuation sheet cylinder 31 are symmetrical with respect to the lens barrel, a prism is arranged at the inner side of the lens barrel, the prism is positioned between the lower side angle cone cylinder 71 and the upper side attenuation sheet cylinder 31, the lower side angle cone 83 is connected to the inner side of the lower side angle cone cylinder 71, the lower side end cover 81 is connected to the lower end of the lower side angle cone cylinder 71, the double-cemented lens fixing structure comprises a double-cemented lens 41 and a right side end cover 42, the right side end cover 42 is connected to the right end, the double-cemented lens 41 is connected to the inner side of the lens barrel near the right end cover 42, one end of the connecting cylinder structure 5 is connected to the right end of the lens barrel, the other end of the connecting cylinder structure 5 is connected with the imaging CCD adjusting structure 6, the imaging CCD adjusting structure 6 comprises an upper imaging CCD fixing seat 63, a lower imaging CCD fixing seat 64 and an imaging CCD 66, the adjusting fixing seat 61 and the lower imaging CCD fixing seat 64 are both connected to the right end of the connecting cylinder structure 5, the lower imaging CCD fixing seat 64 is far away from the inner end of the connecting cylinder structure 5 and fixedly connected with the adjusting fixing seat 61, a threaded hole is cut on the adjusting fixing seat 61, an adjusting rod 65 is connected in the threaded hole, the imaging CCD 66 is positioned between the lower imaging CCD fixing seat 64 and the upper imaging CCD fixing seat 63, the lower end of the imaging CCD 66 is fixedly connected with a CCD mounting plate 67, the lower end of the CCD mounting plate 67 is in transmission connection with the adjusting rod 65, and an optical lens is positioned accurately and is easy to install and convenient to adjust; the imaging CCD 66 position is adjustable; the whole machine can be disassembled or assembled quickly, the structure is simple, and the requirement on the machining precision of parts is low; the whole device has light weight and small size, and can greatly reduce the material cost when being used for mass production.
The left end cover 11 is connected to the left end of the lens barrel through threads or screws, the left end cover 11 is of a cylindrical structure, one end of the left end cover is provided with a third groove, and the size of the third groove is related to the shape of the left pyramid 13; the left end cover 11 fixes the left angle cone 13 in the groove of the left end surface of the lens barrel through threads or screws; the left end cover 11 fixes the left corner cone 13 on the lens barrel in a mode of pressing the outer end face of the left corner cone 13; the part of the structure is positioned by the optical surface of the left-side angle cone 13, and is locked by the way that the left-side end cover 11 presses the back surface of the left-side angle cone 13, so that high-precision positioning can be realized; the lower end cap 81 is connected to the lower end of the lower angle cone 71 by threads or screws, and the right end cap 42 is connected to the right end of the lens barrel by threads or screws, so that the lens barrel is convenient to mount and dismount.
Referring to fig. 2, the attenuator assembly includes a first stage attenuator 34 and a second stage attenuator 35; the first-stage attenuation sheet 34 is positioned between the attenuation sheet mounting cylinder 32 and the upper attenuation sheet cylinder 31, and the first-stage attenuation sheet 34 is fixed between the attenuation sheet mounting cylinder 32 and the upper attenuation sheet cylinder 31 in a threaded connection mode; the second-stage attenuation sheet 35 is positioned between the attenuation sheet mounting cylinder 32 and the attenuation sheet end cover 33, the second-stage attenuation sheet 35 is fixed between the attenuation sheet mounting cylinder 32 and the attenuation sheet end cover 33 in a screw connection mode, the first-stage attenuation sheet 34 and the second-stage attenuation sheet 35 can be mounted according to actual conditions by the aid of the structure, and when the first-stage attenuation sheet 34 is only needed, the second-stage attenuation sheet 35 can be conveniently and rapidly detached without removing other structures, so that a quick disassembly effect is achieved.
Referring to fig. 1, a left rubber pad 12 is connected between a left end cover 11 and the lens barrel, and a right rubber pad is connected between a right end cover 42 and the lens barrel; a lower rubber pad 82 is connected between the lower end cap 81 and the lower cone 71, and the buffer extrusion is performed.
Referring to fig. 1 and 2, an adjusting knob 62 is fixedly connected to the right end of an adjusting rod 65, and the adjusting knob 62 is rotated to drive the adjusting rod 65 to rotate and move with a CCD mounting plate 67, so as to realize the function of adjusting an imaging CCD 66.
The lower cone 71 has a cylindrical structure with flanges at the upper and lower ends, the upper flange is connected with the lens barrel, the lower flange is connected with the lower cone 83, the lower end cover 81 has a cylindrical structure, and one end of the lower end cover 81 is provided with a first groove, and the size of the first groove is related to the shape of the lower cone 83; the lower end cover 81 fixes the lower cone 83 to the lower flange of the lower cone 71 by threads or screws; the lower end cap 81 fixes the lower pyramid 83 on the lower pyramid cylinder 71 by pressing the lower end face of the lower pyramid 83; the partial structure is positioned through the optical surface of the lower angle cone 83 and locked in a pressing mode through the lower end cover 81, so that high-precision positioning can be realized; the part is designed into a quick-dismantling structure, so that the device can be used normally in calibration, and can be quickly and conveniently taken down for storage in test.
The right side end cover 42 is cylindric structure, and the lens cone right-hand member is excavated there is flange annular groove, and right side end cover 42 tip and flange annular groove assorted, and right side end cover 42 tip is excavated there is the second recess, and the left side curved surface of two glued lens 41 is compressed tightly to lens cone right side flange annular groove edge at the in-process of locking, and the right side curved surface of two glued lens 41 is compressed tightly to the second recess edge of right side end cover 42, and then realizes the locate and lock the function to two glued lens 41.
In the invention, the prism plays a role of light splitting, referring to fig. 4, laser emitted by the laser is divided into two paths after passing through the prism, one path is reflected (a path shown by a solid line in a light path diagram), and the other path directly propagates downwards through the prism (a path shown by a broken line in the light path diagram). The reflected light (the light path shown by the solid line) returns to the prism after being reflected by the left corner cone 13, at this time, a part of the light in the reflected light path is reflected out of the device (not shown in the light path diagram), and a part of the light passes through the prism and is focused and imaged on the photosensitive surface of the imaging CCD 66 through the double-cemented lens 41; the light (light path shown by the broken line) reflected directly returns to the prism after being reflected by the lower cone 83, and at this time, a part of the reflected light path is emitted out of the device (not shown in the light path diagram) through the prism, and a part of the reflected light path is reflected by the prism and focused and imaged on the photosensitive surface of the imaging CCD 66 through the double-cemented lens 41.
The invention ensures that the left angle cone 13, the prism and the lens cone are in a coaxial state during installation and adjustment; in calibration, the imaging points of the two light paths (the light path shown by the solid line and the light path shown by the broken line) are converged at the same position by adjusting the state of the lower pyramid 83, and referring to fig. 4, the adjustable optical autocollimator is considered to be in an autocollimation state. If the lower pyramid 83 is not perpendicular to the left pyramid 13, see FIG. 3, then the two imaging points of the two light paths are not in the same position.
When the adjustable optical auto-collimator is used, the lower angle cone fixing structure of the adjustable optical auto-collimator in an auto-collimation state is removed, the reflecting surface of the optical element to be measured is placed in the lower direction of the adjustable optical auto-collimator prism, and the imaging points of two paths (the path shown by a solid line and the path shown by a broken line) are converged at the same position by adjusting the position of the optical element to be measured on the lower side of the adjustable optical auto-collimator prism, so that the optical element to be measured is considered to be perpendicular to the left angle cone 13 of the adjustable optical auto-collimator. Under the condition that the position states of the optical piece to be detected and the adjustable optical autocollimator are not changed, a lens to be detected is placed between the optical piece to be detected and the adjustable optical autocollimator, the position of the lens to be detected is adjusted, and when two imaging points of two light paths are positioned at the same position again, the reflecting surface of the optical piece to be detected and the axis of the lens to be detected are considered to be in a vertical state.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (10)
1. An adjustable optical autocollimator, characterized in that: the lens positioning and clamping structure comprises a lens positioning and clamping structure, a connecting cylinder structure (5) and an imaging CCD adjusting structure (6), wherein the lens positioning and clamping structure comprises a left side angle cone fixing structure, an attenuation sheet fixing structure, a lower side angle cone fixing structure, a prism positioning and clamping structure (2) and a double-gluing lens fixing structure, the prism positioning and clamping structure (2) comprises a lens barrel, the left side angle cone fixing structure comprises a left side end cover (11) and a left side angle cone (13), the left side end cover (11) is fixedly connected to the left end of the lens barrel, the left side angle cone (13) is connected to the inner side of the lens barrel close to the left side end cover (11), the attenuation sheet fixing structure comprises an upper side attenuation sheet barrel (31), an attenuation sheet mounting barrel (32) and an attenuation sheet end cover (33), the upper side attenuation sheet barrel (31) is fixedly connected to the upper end of the lens barrel, the attenuation sheet mounting barrel (32) is connected to the upper end of the attenuation sheet mounting barrel, an attenuation sheet mounting barrel (32) inner side is fixedly connected to the upper end of the attenuation sheet, an attenuation sheet mounting barrel (32) inner side component is arranged on the inner side of the attenuation sheet mounting barrel (32), the attenuation sheet fixing structure comprises an attenuation sheet cone (71) and an upper side angle cone (71) and a lower side cone (71) which are symmetrically connected to the lower side angle cone (71), the prism is positioned between the lower angular cone (71) and the upper attenuation sheet (31), the lower angular cone (83) is connected to the inner side of the lower angular cone (71), the lower end cover (81) is connected to the lower end of the lower angular cone (71), the double-gluing lens fixing structure comprises a double-gluing lens (41) and a right end cover (42), the right end cover (42) is connected to the right end of the lens barrel, the double-gluing lens (41) is connected to the inner side of the lens barrel close to the right end cover (42), one end of the connecting cylinder structure (5) is connected to the right end of the lens barrel, the other end of the connecting cylinder structure (5) is connected with the imaging CCD adjusting structure (6), the imaging CCD adjusting structure (6) comprises an upper imaging CCD fixing seat (63), a lower imaging CCD fixing seat (64) and an imaging CCD (66), the inner ends of the lower imaging CCD fixing seat (64) far away from the connecting cylinder structure (5) are fixedly connected with an adjusting fixing seat (61), the adjusting fixing seat (61) and the lower imaging CCD fixing seat (64) are connected to the right end of the lens fixing seat (64) near the right end cover (42), the imaging fixing seat (64) is connected with the imaging CCD fixing seat (65), the imaging CCD fixing seat (65) in the imaging device, the imaging device (63) through the imaging device, the imaging device and the imaging device. And the lower end of the imaging CCD (66) is fixedly connected with a CCD mounting plate (67), and the lower end of the CCD mounting plate (67) is in transmission connection with an adjusting rod (65).
2. An adjustable optical auto-collimator according to claim 1, characterized in that: the left end cover (11) is connected to the left end of the lens cone through threads or screws, the lower end cover (81) is connected to the lower end of the lower angle cone (71) through threads or screws, and the right end cover (42) is connected to the right end of the lens cone through threads or screws.
3. An adjustable optical auto-collimator according to claim 1, characterized in that: the attenuator assembly includes a first stage attenuator (34) and a second stage attenuator (35).
4. An adjustable optical auto-collimator according to claim 3, characterized in that: the first-stage damping piece (34) is positioned between the damping piece mounting cylinder (32) and the upper damping piece cylinder (31), and the damping piece mounting cylinder (32) and the upper damping piece cylinder (31) are fixed through threaded connection.
5. An adjustable optical auto-collimator according to claim 3, characterized in that: the second-stage attenuation sheet (35) is positioned between the attenuation sheet mounting cylinder (32) and the attenuation sheet end cover (33), and the second-stage attenuation sheet (35) is fixed between the attenuation sheet mounting cylinder (32) and the attenuation sheet end cover (33) in a screw connection mode.
6. An adjustable optical auto-collimator according to claim 1, characterized in that: a left rubber pad (12) is connected between the left end cover (11) and the lens barrel, and a right rubber pad is connected between the right end cover (42) and the lens barrel.
7. An adjustable optical auto-collimator according to claim 1, characterized in that: a lower rubber pad (82) is connected between the lower end cover (81) and the lower angle cone (71).
8. An adjustable optical auto-collimator according to claim 1, characterized in that: the right end part of the adjusting rod (65) is fixedly connected with an adjusting knob (62).
9. An adjustable optical auto-collimator according to claim 1, characterized in that: the lower pyramid cylinder (71) is of a cylindrical structure with flanges at the upper end and the lower end, the upper end flange is connected with the lens barrel, and the lower end flange is connected with the lower pyramid (83).
10. An adjustable optical auto-collimator according to claim 1, characterized in that: the right side end cover (42) is of a cylindrical structure, a flange annular groove is cut at the right end of the lens barrel, and the end part of the right side end cover (42) is matched with the flange annular groove.
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| CN113296286B (en) * | 2021-06-10 | 2022-10-11 | 重庆市天实精工科技有限公司 | Camera module lens assembly correction jig and use method thereof |
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| CN109668527A (en) | 2019-04-23 |
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