CN217765463U - Back burnt offset testing arrangement - Google Patents
Back burnt offset testing arrangement Download PDFInfo
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- CN217765463U CN217765463U CN202122262339.7U CN202122262339U CN217765463U CN 217765463 U CN217765463 U CN 217765463U CN 202122262339 U CN202122262339 U CN 202122262339U CN 217765463 U CN217765463 U CN 217765463U
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Abstract
The utility model provides a burnt offset testing arrangement in back belongs to camera lens check out test set field. The device comprises a lens placing platform, a lens fixing platform and a lens fixing platform, wherein the lens placing platform is provided with a light hole and is used for bearing a lens; the position adjusting assembly is arranged in the light transmission direction of the light transmission hole and used for bearing the light sensor circuit board; the position adjusting assembly can adjust the relative position between the optical sensor circuit board and the lens placing platform along the light transmission direction and detect the position adjusting amount of the optical sensor circuit board. The utility model discloses can adjust the relative position between the light sensor circuit board on it and the camera lens and detect its position adjustment volume to burnt offset behind the measured object around can detecting experiments such as measured object high temperature ageing, simple structure, simple operation.
Description
Technical Field
The utility model belongs to camera lens check out test set field especially relates to a burnt offset testing arrangement in back.
Background
Whether metal, plastic, or glass, have thermal strain coefficients that produce different amounts of expansion and contraction after high temperature aging. For the security lens, the distance between lenses and the shape of a mirror surface can be changed by the telescopic amount, so that the focal length is deviated, and the imaging quality is influenced. In order to ensure that the camera still has good analytic quality after aging, the expansion and contraction amount of each component in the aging process needs to be accurately detected and calculated so as to carry out compensation design in the assembly process and offset the back focus offset caused by the expansion and contraction amount. However, the existing testing device for the back focus offset of the lens is complex in structure, inconvenient to use and poor in practical use effect.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model aims to provide a burnt offset testing arrangement in back for the testing arrangement structure of burnt drift volume behind the camera lens is complicated among the solution prior art, uses inconvenient scheduling problem.
To achieve the above and other related objects, the present invention provides a back coke offset testing device, including: the lens placing platform is provided with a light hole and is used for bearing a lens; the position adjusting assembly is arranged in the light transmission direction of the light transmission hole and used for bearing the light sensor circuit board; the position adjusting assembly can adjust the relative position between the optical sensor circuit board and the lens placing platform along the light transmission direction and detect the position adjusting amount of the optical sensor circuit board.
Optionally, the light hole on the lens placing platform is arranged along the gravity direction, and the lens placing platform and the position adjusting assembly are sequentially arranged up and down along the gravity direction.
Optionally, an elastic member is disposed between the lens placing platform and the position adjusting assembly, and a size of the elastic member is larger than a size of the optical sensor circuit board in a light transmission direction of the light transmission hole.
Optionally, the elastic member is an elastic washer, and when the optical sensor circuit board is placed on the position adjustment assembly, a projection of the optical sensor circuit board in the light transmission direction is located in the elastic washer.
Optionally, the position adjustment assembly comprises a spiral fine adjustment platform and an optical sensor circuit board installation platform arranged on the spiral fine adjustment platform, the spiral fine adjustment platform has at least one adjustment direction coinciding with the light transmission direction, and the spiral fine adjustment platform is further provided with scales for detecting an adjustment distance corresponding to the adjustment direction.
Optionally, the optical lens system further comprises a supporting column, the lens placing platform is connected to the supporting column and can rotate around the supporting column, and the position adjusting assembly is arranged in an area where the light transmission direction passes when the lens placing platform rotates.
Optionally, the system further comprises an industrial camera for recording the position of the lens, wherein the industrial camera is arranged towards one side of the lens placing platform for bearing the lens.
Optionally, still include the objective table, the sliding setting has the fixed bolster on the objective table, the industry camera passes through the fixed bolster sets up on the objective table, the fixed bolster can be through the sliding adjustment the position of industry camera.
Optionally, a placing groove and a positioning point are arranged on the lens placing platform, the placing groove is used for placing a lens, the positioning point is used for primarily positioning the lens, and a mounting groove for mounting the optical sensor circuit board is arranged on the position adjusting assembly.
Optionally, the device further comprises a lower computer, and the lower computer is used for being connected with the optical sensor circuit board on the lens placing platform and displaying the image sensed by the optical sensor circuit board.
As above, the utility model provides a pair of back burnt offset testing arrangement has following beneficial effect: the camera lens can be placed to camera lens place the platform, and the light sensor circuit board can be placed to the position control subassembly, and the position control subassembly sets up on camera lens place the platform's printing opacity direction. Therefore, when the position adjusting component moves along the light transmission direction, the position adjusting component can adjust the relative position between the optical sensor circuit board and the lens on the position adjusting component, so that the lens can be accurately focused on the optical sensor circuit board. Meanwhile, the position adjusting assembly can detect the position adjusting amount of the position adjusting assembly, so that the position adjusting assembly can detect the position adjusting amount of the circuit board of the optical sensor in the light transmission direction, namely the back focal offset of the measured object before and after the aging experiment of the measured object when the lens is accurately focused. The utility model discloses simple structure, the simple operation.
Drawings
Fig. 1 is a schematic front structural view of a back coke offset testing device in an embodiment of the present invention.
Fig. 2 is a schematic side view of the back coke offset testing apparatus in the embodiment of the present invention.
Fig. 3 is a schematic partial cross-sectional view of an elastic washer according to an embodiment of the present invention.
Description of reference numerals: objective table 1, spiral fine setting platform 2, light sensor circuit board mounting platform 3, elastic washer 4, light sensor circuit board 5, optical lens place the platform 6, lens mount 7, fixed bolster 8, industrial camera 9, light trap 10, support column 11, next quick-witted 12, image test target 13.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions of the present invention, so that the present invention does not have the substantial technical significance, and the modification of any structure, the change of the proportion relation or the adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are used for clarity of description only, and are not used to limit the scope of the present invention, and the relative relationship between the terms may be changed or adjusted without substantial technical changes.
Referring to fig. 1 to fig. 3, the present embodiment provides a back focus offset testing apparatus, which includes a lens placing platform and a position adjusting assembly. The lens placing platform is used for bearing a lens, and a light hole 10 is formed in the lens placing platform.
The position adjusting assembly is arranged in the light transmission direction of the light transmission hole 10 and used for bearing the light sensor circuit board 5, and the position adjusting assembly can adjust the relative position between the light sensor circuit board 5 and the lens placing platform along the light transmission direction and detect the position adjusting amount of the light sensor circuit board 5.
In this embodiment, the back focus offset testing device further includes a lower computer 12, and the lower computer 12 is used for connecting with the optical sensor circuit board 5 on the lens placing platform and displaying an image sensed by the optical sensor circuit board 5. When the back focus offset of the lens is tested, the lens is placed on the lens placing platform corresponding to the light hole 10, so that light rays collected by the lens can penetrate through the light hole 10. In this embodiment, the lens is mounted in the lens holder 7, and the lens is mounted on the lens mounting platform through the lens holder 7. The photo sensor circuit board 5 is mounted on the position adjusting assembly corresponding to the light transmission hole 10, and the photo sensor circuit board 5 is connected to the lower machine 12. In the light transmission direction, an image test target 13 is placed in front of the lens for evaluating the definition of the image formed by the lens on the optical sensor circuit board 5.
The position adjustment subassembly sets up on the printing opacity direction of light trap 10, and the light of camera lens gathering can pass light trap 10 to shine on the light sensor on light sensor circuit board 5, light sensor can respond to the formation of image of camera lens and turn into data transmission to the next computer 12 with the image of response, and next computer 12 shows the image of acquireing, and the operating personnel of being convenient for observes.
The relative position between the optical sensor circuit board 5 and the lens placing platform is adjusted along the light transmission direction, so that the position between the optical sensor and the lens is adjusted, and the imaging of the lens on the optical sensor is clear. And taking the measured object from the lens, and carrying out high-temperature aging and other experiments, wherein the measured object is the lens or the optical sensor circuit board 5. And the tested object after the experiment is placed again, and the position of the optical sensor circuit board 5 is adjusted again through the position adjusting assembly until the image is clear again.
The position adjusting component can obtain the position adjusting quantity of the optical sensor circuit board 5 between two times of image definition, the position adjusting quantity comprises an adjusting distance and an adjusting direction, and the position adjusting quantity is the back focus offset of the measured object.
Specifically, the light hole 10 on the lens placement platform is arranged along the gravity direction in this embodiment, the lens placement platform and the position adjustment assembly are sequentially arranged along the gravity direction, and the lens placement platform is arranged above the position adjustment assembly. The camera lens can be placed on camera lens place the platform under the effect of gravity, need not extra fixing device, has eliminated the position difference of the camera lens of secondary installation, avoids the secondary installation to burnt measuring influence in back, simple structure, and the installation is dismantled conveniently.
As shown in fig. 3, in the present embodiment, an elastic member is disposed between the lens platform and the position adjustment assembly, and the size of the elastic member is larger than that of the optical sensor circuit board 5 in the light transmission direction of the light transmission hole 10. The elastic component is arranged between the lens placing platform and the position adjusting component, and the elastic component can provide buffering for the lens placing platform and the position adjusting component, so that rigid contact between the lens placing platform and the position adjusting component and between the lens placing platform and the optical sensor circuit board 5 is avoided, and fine adjustment of the position adjusting component in the front and back directions in the light transmission direction is realized.
Specifically, the elastic member in this embodiment is an elastic washer 4, and is made of rubber, and when the optical sensor circuit board 5 is placed on the position adjustment assembly, the projection of the optical sensor circuit board 5 in the light transmission direction is in the elastic washer 4. The elastic washer 4 is ring-shaped, and the optical sensor circuit board 5 is inside the elastic washer 4 when the optical sensor circuit board 5 is fixedly disposed on the position adjustment assembly. The size of the elastic washer 4 in the light transmission direction is larger than the focal length of the lens, when the position of the light sensor circuit board 5 in the light transmission direction is finely adjusted, the elastic washer 4 is in a compression state, the elastic washer 4 surrounds the light sensor circuit board 5, and is respectively attached to the lens placing platform and the position adjusting component in the light transmission direction, so that the influence of external light source pollution on the definition of an image of the light sensor can be effectively avoided, and the testing accuracy is improved.
Specifically, the position adjustment assembly in this embodiment includes a spiral fine adjustment platform 2 and an optical sensor circuit board mounting platform 3 disposed on the spiral fine adjustment platform 2, and the spiral fine adjustment platform 2 has at least one adjustment direction coinciding with the light transmission direction. The spiral fine adjustment platform 2 is also provided with scales for detecting the adjustment distance corresponding to the adjustment direction, and the position adjustment amount of the optical sensor circuit board 5 between two times of image definition can be obtained through the scales. The spiral fine-tuning platform 2 has high adjustment precision which can reach 1 μm, meets the precision requirement of the back coke test, and ensures the accuracy of the test result. In this embodiment, the lens mounting platform and the optical sensor circuit board mounting platform 3 are bases with the same size, and can be mounted in a mutual exchange manner, so that the aging strain condition of the lens or the optical sensor circuit board 5 can be detected independently.
In this embodiment, the spiral fine-tuning platform 2 has three mutually perpendicular adjustment directions, one of which coincides with the light transmission direction, and the adjustment of the position of the optical sensor circuit board 5 in the light transmission direction can be realized by adjusting the adjustment direction. By adjusting the other two adjusting directions, the light sensor on the light sensor circuit board 5 can be aligned with the focus of the lens in the light transmission direction.
The side of the optical sensor circuit board mounting platform 3 close to the lens placing platform is also provided with a mounting groove, and the mounting position of the optical sensor circuit board 5 can be restrained. In this embodiment, the optical sensor circuit board 5 is connected to the optical sensor circuit board mounting platform 3 by screws, so that the optical sensor circuit board 5 can be detachably fixed.
As shown in fig. 2, the back focus offset testing apparatus further includes a supporting column 11, the lens placing platform is connected to the supporting column 11 and can rotate around the supporting column 11, and the position adjusting assembly is disposed in an area through which the light transmission direction passes when the lens placing platform rotates. Therefore, the lens placing platform can be aligned with the position adjusting assembly in the light transmitting direction and can also be staggered with the position adjusting assembly. Because the optical sensor circuit board 5 is arranged on one side of the position adjusting assembly close to the lens placing platform, when the lens placing platform is staggered with the position adjusting assembly, the operating space can be increased, and the optical sensor circuit board 5 can be conveniently installed on the position adjusting assembly.
The back focus offset testing device further comprises an industrial camera 9 used for recording the position of the lens, and the industrial camera 9 is arranged towards one side of the lens placing platform used for bearing the lens. The industrial camera 9 can record the position of the lens on the lens placing platform when an image acquired by the optical sensor is clear before the lens is subjected to a high-temperature aging experiment, and can be placed at the original position again through the recorded position after the lens is subjected to the aging experiment, so that the test result of the back focal offset caused by the deviation of the front position and the back position of the lens aging experiment can be avoided.
Specifically, back burnt offset testing arrangement still includes objective table 1, and the slip is provided with fixed bolster 8 on objective table 1, and industrial camera 9 connects on fixed bolster 8, and industrial camera 9 passes through fixed bolster 8 and sets up on objective table 1, and fixed bolster 8 can be through the position of slip adjustment industrial camera 9. When the lens is used for imaging, the industrial camera 9 can be moved away, so that the interference on the imaging of the lens is avoided.
Be provided with standing groove and setpoint on the camera lens place the platform, the standing groove is used for placing the camera lens, and the setpoint is used for before the high temperature ageing experiment, and the primary localization is carried out to the camera lens when placing the camera lens on the camera lens place the platform, makes the light of camera lens gathering can pass through light trap 10.
When actually testing the back focus offset of the lens, the method comprises the following steps:
s1, moving away the lens mounting platform, and mounting the optical sensor circuit board 5 on the optical sensor circuit board mounting platform 3. When the aging deformation of the optical sensor circuit board 5 is tested, the optical sensor circuit board 5 is not fixed, the optical sensor circuit board 5 is lightly placed on the optical sensor circuit board mounting platform 3, and when the aging deformation of the lens is tested, the optical sensor circuit board 5 needs to be fixed on the optical sensor circuit board mounting platform 3.
And S2, moving the lens mounting platform back, and mounting the lens mount 7 on the lens mounting platform. When the aging deformation of the lens is tested, the lens mount 7 does not need to be fixed, the lens mount 7 only needs to be lightly placed on the lens mounting platform, and when the aging deformation of the optical sensor circuit board 5 is tested, the lens mount 7 needs to be fixed on the lens mounting platform.
And S3, adjusting the spiral fine adjustment platform 2 to enable the flexible rubber ring to have a certain compression amount.
And S4, connecting the optical sensor circuit board 5 with the lower computer 12, and placing the image test target 13 according to the test requirement.
And S5, adjusting the position of the lens to focus the image on the optical sensor circuit board 5, and then, clearly focusing the image through the spiral fine adjustment platform 2.
S6, calibrating the current position of the measured object by using the industrial camera 9, then putting the measured object into a high-temperature box, and carrying out an aging experiment according to aging experiment conditions.
And S7, the aged measured object is placed on the mounting platform again, and fine-tuned to the position calibrated before the industrial camera 9.
And S8, adjusting the thread fine adjustment platform up and down to enable the image to be focused again clearly, and reading and recording the position adjustment amount. The position adjustment amount is the back focus offset of the aged measured object.
To sum up, the utility model provides a back burnt offset testing arrangement, can detect the back burnt offset of camera lens around the ageing experiment, simple structure, simple operation.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. It will be apparent to those skilled in the art that modifications and variations can be made to the above-described embodiments without departing from the spirit or scope of the invention and it is intended that all such equivalent modifications and variations be considered within the scope of the appended claims without departing from the spirit and scope of the invention.
Claims (10)
1. A back focus offset test device is characterized by comprising: the lens placing platform is provided with a light hole and is used for bearing a lens; the position adjusting assembly is arranged in the light transmitting direction of the light transmitting hole and is used for bearing the optical sensor circuit board;
the position adjusting assembly can adjust the relative position between the optical sensor circuit board and the lens placing platform along the light transmission direction, and detects the position adjusting amount of the optical sensor circuit board.
2. The back focus offset test apparatus according to claim 1, wherein: the light-transmitting holes in the lens placing platform are arranged along the gravity direction, and the lens placing platform and the position adjusting assembly are sequentially arranged up and down along the gravity direction.
3. The back focus offset test apparatus according to claim 1, wherein: the camera lens place the platform with be provided with the elastic component between the position control subassembly in the printing opacity direction of light trap, the size of elastic component is greater than the size of light sensor circuit board.
4. The back focus offset test apparatus according to claim 3, wherein: the elastic piece is an elastic gasket, and when the optical sensor circuit board is placed on the position adjusting assembly, the projection of the optical sensor circuit board in the light transmission direction is in the elastic gasket.
5. The back focus offset test apparatus according to claim 1, wherein: the position adjusting assembly comprises a spiral fine-tuning platform and an optical sensor circuit board mounting platform arranged on the spiral fine-tuning platform, the spiral fine-tuning platform is provided with at least one adjusting direction coinciding with the light transmission direction, and scales used for detecting the adjusting distance are arranged on the spiral fine-tuning platform corresponding to the adjusting direction.
6. The back focus offset test apparatus according to claim 1, wherein: still include the support column, the camera lens place the platform connect on the support column and can wind the support column rotates, the position control subassembly sets up when the camera lens place the platform rotates in the region that printing opacity direction passed through.
7. The back focus offset test apparatus according to claim 1, wherein: still including being used for the industry camera of record camera lens position, industry camera orientation be used for bearing the weight of the one side setting of camera lens on the camera lens place the platform.
8. The back focus offset test apparatus according to claim 7, wherein: still include the objective table, the slip is provided with the fixed bolster on the objective table, the industry camera passes through the fixed bolster sets up on the objective table, the fixed bolster can be through the sliding adjustment the position of industry camera.
9. The back focus offset test apparatus according to claim 1, wherein: the lens placing platform is provided with a placing groove and a positioning point, the placing groove is used for placing a lens, the positioning point is used for primarily positioning the lens, and the position adjusting assembly is provided with a mounting groove used for mounting the optical sensor circuit board.
10. The back focus offset test apparatus according to claim 1, wherein: the lower computer is connected with the optical sensor circuit board on the lens placing platform and displays an image sensed by the optical sensor circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122262339.7U CN217765463U (en) | 2021-09-17 | 2021-09-17 | Back burnt offset testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122262339.7U CN217765463U (en) | 2021-09-17 | 2021-09-17 | Back burnt offset testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217765463U true CN217765463U (en) | 2022-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122262339.7U Active CN217765463U (en) | 2021-09-17 | 2021-09-17 | Back burnt offset testing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217765463U (en) |
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2021
- 2021-09-17 CN CN202122262339.7U patent/CN217765463U/en active Active
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