CN214251475U - A Measuring Device for Finite Conjugate Scanning Lens Back focal length - Google Patents
A Measuring Device for Finite Conjugate Scanning Lens Back focal length Download PDFInfo
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- CN214251475U CN214251475U CN202120291881.2U CN202120291881U CN214251475U CN 214251475 U CN214251475 U CN 214251475U CN 202120291881 U CN202120291881 U CN 202120291881U CN 214251475 U CN214251475 U CN 214251475U
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 51
- 239000011521 glass Substances 0.000 claims abstract description 17
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
本实用新型公开了一种用于有限共轭扫描镜头后截距的量测装置，包括固定架和镜头体，其特征在于，还包括用于配合镜头体反射光线的平台机构，和用于调整平台机构位移的调整机构，所述调整机构通过顶针组件与平台机构调整配合设置，所述平台机构通过固定架与镜头体配合设置，所述平台机构固定设置在固定架下方，所述镜头体设置在固定架的上方。本实用新型利用平面镜的反光原理及中心偏差装置快速量测出有限共轭镜头工作距离，通过玻璃罩将平面镜的反射光线折射到镜头的最后一个镜片的距离，继而量测出镜头后截距，不仅填补了有限共轭扫描镜头后截距的空白，而且量测出的数据快速准备，从而有效地提高了镜头变焦的清晰度。
The utility model discloses a measuring device for the back focal length of a finite conjugate scanning lens, which comprises a fixing frame and a lens body, and is characterized in that it further comprises a platform mechanism for cooperating with the lens body to reflect light, and a platform mechanism for adjusting the reflected light of the lens body. An adjustment mechanism for the displacement of the platform mechanism. The adjustment mechanism is adjusted and matched with the platform mechanism through the thimble assembly. above the mount. The utility model utilizes the reflection principle of the plane mirror and the center deviation device to quickly measure the working distance of the finite conjugate lens, and the reflected light of the plane mirror is refracted to the distance of the last lens of the lens through the glass cover, and then the back intercept of the lens is measured. It not only fills the gap of the back focal length of the limited conjugate scanning lens, but also prepares the measured data quickly, thereby effectively improving the sharpness of the lens zoom.
Description
Technical Field
The utility model belongs to the technical field of the camera lens equipment of measurationing, concretely relates to a measuring device that is used for intercept behind limited conjugate scanning lens.
Background
In an optical system, the distance from the vertex of the last optical lens surface to the image plane is called as the back intercept, and the back intercepts are different for different optical systems, so that when a lens is installed, the relative position of the lens to a camera needs to be adjusted, the distance from a camera negative film to the vertex of the last surface of the lens meets the requirement of the back intercept, and the negative film is positioned on the image plane of the lens. At present, the back intercept of a lens is measured, the distance from the focal point of the lens to the top point of the last optical lens is measured through a collimator device, the distance is the back intercept of the lens, the back intercept measurement of a finite conjugate lens cannot be met because light emitted by a collimator of the collimator device is parallel light, and no perfect measuring device is provided for the back intercept measurement of the finite conjugate lens at the present stage. For this reason, a new technical solution is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a measuring device for intercept behind limited conjugate scanning lens to solve the back intercept measurement of the limited conjugate lens in the present stage that proposes in the above-mentioned background art, not have this type of measuring device's problem yet.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a measuring device for intercept behind finite conjugate scanning lens, includes the mount and the camera lens body, its characterized in that still includes the platform mechanism that is used for cooperating the camera lens body reflection light to and be used for the guiding mechanism of adjustment platform mechanism displacement, guiding mechanism passes through thimble assembly and platform mechanism adjustment cooperation setting, platform mechanism passes through the mount and sets up with the cooperation of the camera lens body, the fixed setting of platform mechanism is in the mount below, the camera lens body sets up the top at the mount.
Further, platform mechanism is including the level crossing that is used for the reflection ray and the displacement platform who is used for fixed level crossing, displacement platform's top is provided with the platform that is used for placing the level crossing, the platform passes through colloid and level crossing fixed connection, displacement platform's below is passed through the bolt fastening and is set up on the mount.
Furthermore, a knob used for being matched with the ejector pin assembly to control the displacement platform to move up and down is arranged on the side edge of the displacement platform, and the knob is connected with the adjusting mechanism in a jacking mode through the ejector pin assembly.
Further, thimble assembly is including being used for coordinating the connecting block that guiding mechanism linkage displacement platform removed, the connecting block passes through movable bolt to be fixed at displacement platform's side, the one end of connecting block is through ball I and knob roll connection, the other end of connecting block is through ball II and guiding mechanism roll connection.
Furthermore, guiding mechanism is including being used for controlling the screw rod that displacement platform reciprocated, the fixed side that sets up at displacement platform of screw rod, the screw rod passes through the connecting block and sets up with displacement platform linkage, the one end of screw rod is provided with the chi pole that is used for controlling displacement platform and prepares to remove, the other end of screw rod passes through ball II and connecting block roll connection.
Further, the lens body is including the lens frame that is used for fixed lens and the glass cover that is used for cooperating lens frame simulation camera lens actual work, the glass cover passes through the level crossing and sets up with the cooperation of lens frame, the glass cover sets up directly over the level crossing, the glass cover passes through the fixed station and sets up the below at the lens frame, the top of lens frame is provided with the central deviation device that is used for measuring limited conjugate lens working distance, lens frame card is gone into and is set up in the fixed station, the fixed station card is gone into the upper end that sets up at the mount.
Furthermore, the fixed frame comprises a bottom plate for fixing the displacement platform and a bedplate for fixing the fixed platform, and the bedplate is fixedly connected with the bottom plate through a support.
Furthermore, the bottom plate is fixedly connected with the displacement platform through bolts, and the bedplate is connected with the fixed platform in a clamping mode.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses utilize the reflection of light principle of level crossing, the knob is rotated in the cooperation through chi pole and connecting block, make the level crossing drive displacement platform at the knob and move down and adjust, thereby make the level crossing find the most clear image, reach the reflection of light requirement of intercept behind the camera lens, the central deviation device of recycling is measured out finite conjugate camera lens working distance fast, the distance of refracting the last lens to the camera lens through the reflection ray of glass cover with the level crossing, measure the intercept behind the camera lens then, not only filled the blank of intercept behind the finite conjugate scanning camera lens, and the data of measuring prepare fast, thereby the definition that the camera lens zooms has been improved effectively.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the overall structure of the present invention;
fig. 3 is a schematic diagram of the rear intercept state of the measuring lens according to the present invention.
Wherein: 1. a fixed mount; 2. a lens body; 3. a platform mechanism; 4. an adjustment mechanism; 5. a thimble assembly; 6. a plane mirror; 7. a displacement platform; 8. a platform; 9. a knob; 10. connecting blocks; 11. a movable bolt; 12. a ball I; 13. a ball II; 14. a screw; 15. a ruler rod; 16. a lens holder; 17. a glass cover; 18. a fixed table; 19. a center deviation device; 20. a base plate; 21. a platen; 22. and (4) a bracket.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a measuring device for intercept behind limited conjugate scanning lens, includes mount 1, the camera lens body 2, platform mechanism 3 and guiding mechanism 4, guiding mechanism 4 sets up through the cooperation of thimble assembly 5 with the adjustment of platform mechanism 3, and platform mechanism 3 sets up through mount 1 and the cooperation of camera lens body 2, and platform mechanism 3 is fixed to be set up in mount 1 below, and camera lens body 2 sets up the top at mount 1.
Referring to fig. 1-2, in order to facilitate installation of the platform mechanism 3 and the thimble assembly 5, in this embodiment, preferably, the platform mechanism 3 includes a plane mirror 6 and a displacement platform 7, the plane mirror 6 is used for reflecting light, the displacement platform 7 is used for fixing the plane mirror 6, a platform 8 is disposed above the displacement platform 7, the platform 8 is used for placing the plane mirror 6, the platform 8 is fixedly connected with the plane mirror 6 through a colloid, the lower part of the displacement platform 7 is fixedly disposed on the fixing frame 1 through bolts, a knob 9 is disposed on a side edge of the displacement platform 7, the knob 9 is used for controlling the displacement platform 7 to move up and down in cooperation with the thimble assembly 5, the knob 9 is connected with the adjusting mechanism 4 in a pressing manner through the thimble assembly 5, the thimble assembly 5 includes a connecting block 10, the connecting block 10 is used for cooperating with the adjusting mechanism 4 to move in linkage with the displacement platform 7, the connecting block 10 is fixed on a side edge of the displacement platform 7 through a movable bolt 11, one end of the connecting block 10 is in rolling connection with the knob 9 through a ball I12, and the other end of the connecting block 11 is in rolling connection with the adjusting mechanism 4 through a ball II 13, so that the plane mirror 6 is adjusted under the driving of the knob 9 and the movement of the displacement platform 7.
Referring to fig. 1, in order to facilitate installation of the adjusting mechanism 4, in this embodiment, preferably, the adjusting mechanism 4 includes a screw 14, the screw 14 is used to control the displacement platform 7 to move up and down, the screw 14 is fixedly disposed at a side of the displacement platform 7, the screw 14 is linked with the displacement platform 7 through a connecting block 10, one end of the screw 14 is provided with a ruler rod 15, the ruler rod 15 is used to control the displacement platform 7 to move, and the other end of the screw 14 is connected with the connecting block 11 through a ball ii 13 in a rolling manner, so that the plane mirror 6 finds the clearest image, and meets the requirement of reflection of the rear intercept of the lens.
Referring to fig. 1-3, in order to facilitate the installation of the lens body 2, in this embodiment, preferably, the lens body 2 includes a lens frame 16 and a glass cover 17, the lens frame 16 is used for fixing the lens, the glass cover 17 is used for cooperating with the lens frame 16 to simulate the actual operation of the lens, the glass cover 17 is disposed in cooperation with the lens frame 16 through a plane mirror 6, the glass cover 17 is disposed right above the plane mirror 6, the glass cover 17 is disposed below the lens frame 16 through a fixing platform 18, a central deviation device 19 is disposed above the lens frame 16, the central deviation device 19 is used for measuring the working distance of the finite conjugate lens, the lens frame 16 is clamped and disposed in the fixing platform 18, the fixing platform 18 is clamped and disposed at the upper end of the fixing frame 1, the working distance of the finite conjugate lens is rapidly measured through the central deviation device 19, the reflected light of the plane mirror 6 is refracted to the distance of the last lens of the lens through the glass cover 17, then, the back intercept of the lens is measured.
Referring to fig. 1-2, in order to facilitate installation of the fixing frame 1, in the present embodiment, preferably, the fixing frame 1 includes a bottom plate 20 and a platen 21, the bottom plate 20 is used to fix the displacement platform 7, the platen 21 is used to fix the fixing platform 18, the platen 21 is supported and fixedly connected with the bottom plate 20 through a bracket 22, the bottom plate 20 is fixedly connected with the displacement platform 7 through a bolt, and the platen 21 is connected with the fixing platform 18 in a snap-in manner, so that a distance between a lens fixed by the lens frame 16 and the flat mirror 6 can be within a controllable range.
The utility model discloses a theory of operation and use flow: after the device is finished, when the back intercept of the finite conjugate scanning lens needs to be measured, an operator fixes the lens on a bedplate 20 through a lens frame 16 and a fixed platform 18, fixes a displacement platform 7 on a bottom plate 20, enables the distance between the lens fixed by the lens frame 16 and a plane mirror 6 fixed on a platform 8 of the displacement platform 7 to be within a controllable range, places a central deviation device 19 above the lens frame 16, finds the image of the first lens surface of the lens through the central deviation device 19, controls the central deviation device to move upwards to measure the working distance of the finite conjugate lens, controls a ruler rod 15 to adjust a connecting block 10 through a ball II 13 according to the working distance of the finite conjugate lens, enables a knob 9 to roll under a ball I12 of the connecting block 10 to force the displacement platform 7 to move upwards and downwards, and enables the plane mirror 6 to find the clearest image under the movement of the platform 8 of the displacement platform 7, meanwhile, the displacement platform 7 is fixed, the surface of the plane mirror 6 is a focal plane at the moment, light emitted by the plane mirror 6 is a focal point, the focal point is refracted to the last lens of the lens through the glass cover 17 by utilizing the reflection principle of the plane mirror 6, the distance from the focal point to the last lens is measured, and the distance is the back intercept of the lens.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a measuring device for intercept behind finite conjugate scanning lens, includes the mount and the camera lens body, its characterized in that still includes the platform mechanism that is used for cooperating the camera lens body reflection light to and be used for the guiding mechanism of adjustment platform mechanism displacement, guiding mechanism passes through thimble assembly and platform mechanism adjustment cooperation setting, platform mechanism passes through the mount and sets up with the cooperation of the camera lens body, the fixed setting of platform mechanism is in the mount below, the camera lens body sets up the top at the mount.
2. The apparatus as claimed in claim 1, wherein the platform mechanism includes a flat mirror for reflecting light and a displacement platform for fixing the flat mirror, the platform is disposed above the displacement platform and is used for placing the flat mirror, the platform is fixedly connected to the flat mirror via a rubber body, and the lower portion of the displacement platform is fixedly disposed on the fixing frame via bolts.
3. The apparatus as claimed in claim 2, wherein a knob is disposed on a side of the displacement platform for cooperating with the pin assembly to control the displacement platform to move up and down, and the knob is in pressing connection with the adjusting mechanism through the pin assembly.
4. A device as claimed in claim 1 or 3, wherein the thimble assembly comprises a connecting block for cooperating with the adjustment mechanism to move the displacement platform, the connecting block is fixed to a side of the displacement platform by a movable bolt, one end of the connecting block is connected to the knob by a ball i, and the other end of the connecting block is connected to the adjustment mechanism by a ball ii.
5. The apparatus of claim 1, wherein the adjusting mechanism comprises a screw rod for controlling the displacement platform to move up and down, the screw rod is fixed to a side of the displacement platform, the screw rod is linked with the displacement platform through a connecting block, a rod for controlling the displacement platform to move is disposed at one end of the screw rod, and the other end of the screw rod is connected with the connecting block in a rolling manner through a ball II.
6. The apparatus according to claim 1, wherein the lens body comprises a lens holder for fixing the lens and a glass cover for cooperating with the lens holder to simulate the actual operation of the lens, the glass cover is disposed above the mirror via a plane mirror, the glass cover is disposed under the lens holder via a fixing platform, a central deviation device for measuring the working distance of the finite conjugate lens is disposed above the lens holder, the lens holder is clamped in the fixing platform, and the fixing platform is clamped in the upper end of the fixing platform.
7. The apparatus of claim 1, wherein the holder comprises a base plate for fixing the displacement stage and a platen for fixing the fixed stage, and the platen is fixedly connected to the base plate by a support.
8. The apparatus of claim 7, wherein the base plate is fixedly connected to the displacement stage by bolts, and the platen is engaged with the fixed stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120291881.2U CN214251475U (en) | 2021-02-02 | 2021-02-02 | A Measuring Device for Finite Conjugate Scanning Lens Back focal length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120291881.2U CN214251475U (en) | 2021-02-02 | 2021-02-02 | A Measuring Device for Finite Conjugate Scanning Lens Back focal length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214251475U true CN214251475U (en) | 2021-09-21 |
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ID=77795681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120291881.2U Active CN214251475U (en) | 2021-02-02 | 2021-02-02 | A Measuring Device for Finite Conjugate Scanning Lens Back focal length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214251475U (en) |
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2021
- 2021-02-02 CN CN202120291881.2U patent/CN214251475U/en active Active
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