CN107345849B - Lens detection and calibration tool and method - Google Patents
Lens detection and calibration tool and method Download PDFInfo
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- CN107345849B CN107345849B CN201710747578.7A CN201710747578A CN107345849B CN 107345849 B CN107345849 B CN 107345849B CN 201710747578 A CN201710747578 A CN 201710747578A CN 107345849 B CN107345849 B CN 107345849B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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Abstract
The invention relates to the field of lens detection, in particular to a tool and a method for detecting and calibrating a lens. The method and the device solve the problems that in the prior art, the detection precision is not high and the detection data cannot be directly read. The lens adjusting frame is used for installing a lens, can drive the lens to move on a horizontal plane along the axial direction perpendicular to the lens, and can rotate the lens around the axial direction of the lens. The positioner is used for judging the horizontal state of the lens. The range finder can move up and down and can horizontally move along the axial direction of the lens arranged on the lens adjusting frame, and is used for reading optical data of the lens. The lens is positioned through the lens adjusting frame and the positioner, the optical data is measured through the range finder, the range finder can directly read the optical data, the detection process is more automatic, and the technical problem of low precision of manual measurement is avoided.
Description
Technical Field
The invention relates to the field of lens detection, in particular to a tool and a method for detecting and calibrating a lens.
Background
The galvanometer lens is used for realizing high-speed accurate positioning of laser in a working plane by swinging the X and Y reflecting lenses in the application process of scanning control of the laser by the scanning galvanometer. Since laser directly acts on the surface of the vibrating mirror lens, the bonding precision of the vibrating mirror becomes an important foundation for the scanning application of the vibrating mirror, and the bonding precision of the vibrating mirror is used as one of the examination standards of the quality and the optical performance of the vibrating mirror, so that the final laser processing effect is directly affected.
A common lens detection method is the reflected red wobble method. However, this method cannot accurately detect the parallelism, symmetry, and other data of the rotation center axis of the lens, and the data cannot be directly read out, and the detection accuracy is not high.
Therefore, the lens detection in the prior art has the problems that the detection precision is not high, the detection data cannot be directly read out, and the like.
Disclosure of Invention
The invention aims to provide a lens detection and calibration tool and a lens detection and calibration method, which are used for solving the problems that the detection precision is not high and the detection data cannot be directly read out in the prior art.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a lens inspection and calibration fixture comprising:
the lens adjusting frame is used for installing a lens, can drive the lens to move on a horizontal plane along the axial direction perpendicular to the lens, and can rotate the lens around the axial direction of the lens;
the locator is used for judging the horizontal state of the lens;
the range finder can move up and down and horizontally along the axial direction of the lens arranged on the lens adjusting frame and is used for reading optical data of the lens.
Still further, the method further comprises the steps of,
the lens adjustment frame includes:
an adjusting frame shell provided with a through hole;
the positioning shaft penetrates through the through hole, is detachably connected with the adjusting frame shell through the locking component, and is provided with a clamping opening at the mounting end.
Still further, the method further comprises the steps of,
the locking assembly includes a first positioning device and a second positioning device,
the first positioning device comprises a clamp and a locking piece, wherein two free ends of the clamp are provided with openings, and the locking piece penetrates through the two openings to adjust the fastening degree of the clamp;
the second positioning device passes through the adjusting frame shell and the end part of the second positioning device abuts against the positioning shaft.
Still further, the method further comprises the steps of,
the lens adjusting frame further comprises a first sliding mechanism, the first sliding mechanism comprises a first sliding block and a first sliding rail, the first sliding block is connected with the adjusting frame shell, and the first sliding block is used for driving the adjusting frame to move along the first sliding rail.
Still further, the method further comprises the steps of,
the locator comprises a locator body and a locating rod;
the locating rod is connected with the locator main body through a telescopic component, the locating rod is perpendicular to the telescopic direction of the telescopic component, and the axial lead of the locating rod is perpendicular to the plane where the lens is located.
Still further, the method further comprises the steps of,
the range finder also comprises a height adjusting mechanism;
the height adjusting mechanism comprises a fixed frame body, a movable frame body sleeved on the fixed frame body, and a telescopic rod piece, wherein the top of the telescopic rod piece is connected with the movable frame body, and the bottom of the telescopic rod piece stretches into the fixed frame body, and the range finder is connected with the movable frame body.
Still further, the method further comprises the steps of,
the range finder further comprises a second sliding mechanism, wherein the second sliding mechanism comprises a second sliding block and a second sliding rail, and the second sliding block is connected with the fixed frame body through a connecting plate; the extending direction of the second sliding rail is perpendicular to the extending direction of the first sliding rail.
Still further, the method further comprises the steps of,
the range finder further comprises a driving device, wherein the driving device acts on a second sliding block of the second sliding mechanism and is used for driving the second sliding block to slide along the second sliding rail.
Still further, the method further comprises the steps of,
the fixture is provided with a positioning shaft replacement area, and the positioning shaft replacement area is preset with a plurality of positioning shafts of different types.
A lens inspection and calibration method comprising:
selecting a positioning shaft matched with a lens to be detected, mounting the positioning shaft on a lens adjusting frame, rotating the positioning shaft until the lens is horizontal and the reflecting surface of the lens contacts the free end of a positioning rod of a positioner so as to finish horizontal initial positioning;
driving the lens adjusting frame to move along the direction of the first sliding rail until the lens adjusting frame is positioned in a working area of the range finder;
the height of the range finder is adjusted to meet the distance measuring requirement, and the range finder slides along the second sliding rail direction so as to read out all detection data of the lens in the axial direction;
and rotating the positioning shaft until the lens is in a vertical state, and reading all detection data of the lens in the vertical state.
By combining the technical scheme, the invention has the following beneficial effects:
in a specific use process, the lens to be detected is mounted on the lens adjusting frame, and the lens can be finely adjusted by rotating due to the fact that the lens adjusting frame can rotate around the axis of the lens. The lens can be kept horizontal by the cooperation of the adjusting frame and the positioner because the positioner can determine the horizontal state of the lens. After the lens is level, the lens is moved so that the lens is located in the working area of the rangefinder, i.e., in the testable area of the rangefinder. Because the range finder can reciprocate to can adjust the interval between range finder and the lens in order to adapt to different measurement demands. After the height adjustment of the range finder is completed, the range finder is driven to horizontally move along the axial direction of the lens arranged on the lens adjusting frame so as to read all optical data of the axial direction of the lens.
According to the technical scheme, the lens is positioned through the lens adjusting frame and the positioner, the optical data is measured through the range finder, the range finder can directly read the optical data, the detection process is relatively automatic, and the technical problem of low precision of manual measurement is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a lens detecting and calibrating tool according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a lens detecting and calibrating tool according to an embodiment of the present invention;
FIG. 3 is a top view of a lens inspection and calibration tool according to an embodiment of the present invention;
fig. 4 is an enlarged view of a lens adjustment frame in a lens inspection and calibration fixture according to an embodiment of the present invention.
Icon: 100-lens adjusting frame; 200-positioners; 300-distance measuring instrument; 400-locating the shaft replacement region; 110-an adjusting rack housing; 120-positioning the shaft; 130-a locking assembly; 131-first positioning means; 132-a second positioning device; 140-a first slide mechanism; 141-a first slider; 142-a first slide rail; 210-a positioner body; 220-positioning rod; 310-height adjustment mechanism; 311-fixing the frame body; 312-a movable frame; 320-a second slide mechanism.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships 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 devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" 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," "connected," and "connected" 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.
Embodiment 1 and embodiment 2 are described in detail below with reference to the accompanying drawings:
fig. 1 is a schematic structural diagram of a lens detecting and calibrating tool according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a lens detecting and calibrating tool according to an embodiment of the present invention; FIG. 3 is a top view of a lens inspection and calibration tool according to an embodiment of the present invention; fig. 4 is an enlarged view of a lens adjustment frame in a lens inspection and calibration fixture according to an embodiment of the present invention.
Example 1
The embodiment provides a lens detects and calibration frock, includes:
the lens adjusting frame 100 is used for installing a lens, can drive the lens to move on a horizontal plane along the axis direction perpendicular to the lens, and can rotate the lens around the axis direction of the lens;
a positioner 200 for determining the horizontal state of the lens;
the range finder 300 is capable of moving up and down and horizontally along the axial direction of a lens mounted on the lens adjustment frame 100 for reading optical data of the lens.
In a specific use, the lens to be inspected is mounted to the lens adjustment frame 100, and the lens can be finely tuned by rotation, since the lens adjustment frame 100 can rotate about the axis of the lens. Since the fixture 200 can determine the level of the lens, the cooperation of the adjustment frame and the fixture 200 can keep the lens level. After the lens is level, the lens is moved so that the lens is located in the working area of rangefinder 300, i.e., in the testable area of rangefinder 300. Because the rangefinder 300 can move up and down, the distance between the rangefinder 300 and the lens can be adjusted to accommodate different measurement requirements. After the height adjustment of the rangefinder 300 is completed, the rangefinder 300 is driven to horizontally move along the axial direction of the lenses mounted on the lens adjustment frame 100 to read the respective optical data of the axial direction of the lenses.
As can be seen from the above working process, in the technical solution provided in this embodiment, the lens is positioned by the lens adjusting frame 100 and the positioner 200, the optical data is measured by the rangefinder 300, the rangefinder 300 can directly read the optical data, the detection process is relatively automated, and the technical problem of low precision of manual measurement is avoided.
In an alternative to this embodiment, the first and second embodiments, preferably,
the lens adjustment frame 100 includes an adjustment frame housing 110 and a positioning shaft 120. The cartridge housing 110 is provided with a through hole. The positioning shaft 120 passes through the through hole, is detachably connected with the adjusting housing 110 through the locking assembly 130, and is provided with a clamping opening at the mounting end. Still further, the positioning shaft 120 includes a rod portion and a head portion, the rod portion is fixedly connected with the head portion, and a clamping opening is formed at a free end of the rod portion, and the clamping opening is used for clamping the lens.
In an alternative to this embodiment, the first and second embodiments, preferably,
the locking assembly 130 includes a first positioning device 131 and a second positioning device 132.
The first positioning device 131 includes a clamp and a locking member, two free ends of the clamp are provided with openings, and the locking member passes through the two openings to adjust the fastening degree of the clamp. The clip is located between the alignment housing 110 and the head of the positioning shaft 120, and also separates the head of the positioning shaft 120 from the alignment housing 110. Still further, the locking member may be a bolt.
The second positioning device 132 passes through the adjustment housing 110 and abuts the positioning shaft 120 at an end. Still further, the second positioning device 132 is configured as a bolt, and a rod portion of the bolt abuts against a rod portion of the positioning shaft 120 after passing through the adjusting frame housing 110.
In an alternative to this embodiment, the first and second embodiments, preferably,
the lens adjusting frame 100 further includes a first sliding mechanism 140, where the first sliding mechanism 140 includes a first slider 141 and a first sliding rail 142, the first slider 141 is connected to the adjusting frame housing 110, and the first slider 141 is used to drive the adjusting frame to move along the first sliding rail 142. Further, the first slider 141 is driven manually, and the first slider 141 or the adjusting frame housing 110 connected to the first slider 141 is held by hand to fine-tune the position of the first slider 141 relative to the first sliding rail 142. The manual adjustment is more flexible and less costly. Further, the first slider 141 is driven by electric control, for example, the first slider 141 is connected to a screw motor mechanism, the motor drives a screw to move, and the screw drives the first slider 141 to slide along the first sliding rail 142. The electric control driving mode has higher precision and stronger adaptability.
In an alternative to this embodiment, the first and second embodiments, preferably,
the positioner 200 includes a positioner body 210 and a positioning rod 220; the positioning rod 220 is connected with the positioner main body 210 through a telescopic component, the positioning rod 220 is perpendicular to the telescopic direction of the telescopic component, and the axial lead is perpendicular to the plane where the lens is located. The telescoping assembly includes, for example, a first sled and a second sled. One end of the first sliding plate is installed on the positioner main body 210, the other end of the first sliding plate is connected with the second sliding plate, one end, far away from the first sliding plate, of the second sliding plate is connected with the positioning rod 220, and the positioning rod 220 is perpendicular to the plane where the second sliding plate is located. The first slide plate is provided with a pulley, the second slide plate is provided with a slide rail, or the first slide plate is provided with a slide rail, and the second slide plate is provided with a pulley. Of course, the pulley structure described above may be replaced by other structures such as a sleeve.
In an alternative to this embodiment, the first and second embodiments, preferably,
rangefinder 300 also includes a height adjustment mechanism 310; the height adjusting mechanism 310 comprises a fixed frame 311, a movable frame 312 sleeved on the fixed frame 311, and a telescopic rod with the top connected with the movable frame 312 and the bottom extending into the fixed frame 311, wherein the range finder 300 is connected with the movable frame 312.
In an alternative to this embodiment, the first and second embodiments, preferably,
the range finder 300 further comprises a second sliding mechanism 320, wherein the second sliding mechanism 320 comprises a second sliding block and a second sliding rail, and the second sliding block is connected with the fixed frame 311 through a connecting plate; the extending direction of the second sliding rail is perpendicular to the extending direction of the first sliding rail 142. Further, the second slider is driven manually, and the second slider or the fixed frame 311 connected to the second slider is held by hand to fine-tune the position of the second slider relative to the second slide rail. The manual adjustment is more flexible and less costly. Further, the second slider is driven by electric control, for example, the second slider is connected with a screw motor mechanism, the motor drives a screw to move, and the screw drives the second slider to slide along the second sliding rail. The electric control driving mode has higher precision and stronger adaptability.
In an alternative to this embodiment, the first and second embodiments, preferably,
the rangefinder 300 further includes a driving device, where the driving device acts on the second slider of the second sliding mechanism 320 to drive the second slider to slide along the second sliding rail. The drive means may be, for example, a screw motor mechanism, or a hydraulic mechanism.
In an alternative to this embodiment, the first and second embodiments, preferably,
the fixture is provided with a positioning shaft 120 replacing area 400, and the positioning shaft 120 replacing area 400 is provided with a plurality of positioning shafts 120 with different types in advance. Since different lens tails require different sized jaws to grip the lens, different positioning shafts 120 need to be provided for different lenses. The positioning shaft 120 replacement area 400 is arranged, so that the user can conveniently and freely select the positioning shaft. Specifically, the positioning shaft 120 replacement area 400 includes a mounting cylinder in which a plurality of mounting grooves are provided, and the positioning shaft 120 is accommodated.
Example 2
The embodiment provides a lens detection and calibration method, which comprises the following steps:
s1: selecting a positioning shaft 120 matched with the lens to be detected, mounting the positioning shaft 120 on the lens adjusting frame 100, rotating the positioning shaft 120 until the lens is horizontal and the reflecting surface of the lens contacts the free end of the positioning rod 220 of the positioner 200 to finish horizontal initial positioning;
s2: driving the lens adjusting frame 100 to move along the direction of the first sliding rail 142 until the lens adjusting frame 100 is positioned in the working area of the range finder 300;
s3: adjusting the height of the range finder 300 to meet the ranging requirement, and sliding the range finder 300 along the second sliding rail direction to read out each detection data of the lens in the axial direction;
s4: the positioning shaft 120 is rotated until the lens is in a vertical state, and various detection data of the lens in the vertical state are read.
As can be seen from the above working process, in the technical solution provided in this embodiment, the lens is positioned by the lens adjusting frame 100 and the positioner 200, the optical data is measured by the rangefinder 300, the rangefinder 300 can directly read the optical data, the detection process is relatively automated, and the technical problem of low precision of manual measurement is avoided.
Further, in the step S1, more specifically, the first positioning device 131 and the second positioning device 132 are rotated to lock the positioning shaft 120 to the lens adjusting frame 100.
Further, in the step S2, more specifically, the lens adjusting frame 100 is manually driven to move along the direction of the first sliding rail 142 until the lens adjusting frame 100 is located in the working area of the rangefinder 300; or the lens adjusting frame 100 is driven to move along the direction of the first sliding rail 142 in an electric control way until the lens adjusting frame 100 is positioned in the working area of the range finder 300;
finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; 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: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. Lens detects and calibration frock, its characterized in that includes:
the lens adjusting frame is used for installing a lens, can drive the lens to move on a horizontal plane along the axial direction perpendicular to the lens, and can rotate the lens around the axial direction of the lens;
the locator is used for judging the horizontal state of the lens;
the distance meter can move up and down and horizontally along the axial direction of the lens arranged on the lens adjusting frame and is used for reading optical data of the lens;
the lens adjustment frame includes:
an adjusting frame shell provided with a through hole;
the positioning shaft penetrates through the through hole, is detachably connected with the adjusting frame shell through the locking component, and is provided with a clamping opening at the mounting end;
the lens adjusting frame further comprises a first sliding mechanism, wherein the first sliding mechanism comprises a first sliding block and a first sliding rail, the first sliding block is connected with the adjusting frame shell and is used for driving the adjusting frame to move along the first sliding rail;
the locator comprises a locator body and a locating rod;
the locating rod is connected with the locator main body through a telescopic component, the locating rod is perpendicular to the telescopic direction of the telescopic component, and the axial lead of the locating rod is perpendicular to the plane where the lens is located.
2. The lens inspection and calibration fixture of claim 1, wherein,
the locking assembly includes a first positioning device and a second positioning device,
the first positioning device comprises a clamp and a locking piece, wherein two free ends of the clamp are provided with openings, and the locking piece penetrates through the two openings to adjust the fastening degree of the clamp;
the second positioning device passes through the adjusting frame shell and the end part of the second positioning device abuts against the positioning shaft.
3. The lens inspection and calibration fixture of claim 1, wherein,
the range finder also comprises a height adjusting mechanism;
the height adjusting mechanism comprises a fixed frame body, a movable frame body sleeved on the fixed frame body, and a telescopic rod piece, wherein the top of the telescopic rod piece is connected with the movable frame body, and the bottom of the telescopic rod piece stretches into the fixed frame body, and the range finder is connected with the movable frame body.
4. The lens inspection and calibration fixture of claim 3 wherein,
the range finder further comprises a second sliding mechanism, wherein the second sliding mechanism comprises a second sliding block and a second sliding rail, and the second sliding block is connected with the fixed frame body through a connecting plate; the extending direction of the second sliding rail is perpendicular to the extending direction of the first sliding rail.
5. The lens inspection and calibration fixture of claim 4, wherein,
the range finder further comprises a driving device, wherein the driving device acts on a second sliding block of the second sliding mechanism and is used for driving the second sliding block to slide along the second sliding rail.
6. The lens inspection and calibration fixture of claim 1, wherein,
the fixture is provided with a positioning shaft replacement area, and the positioning shaft replacement area is preset with a plurality of positioning shafts of different types.
7. A method of lens inspection and calibration, characterized in that a lens inspection and calibration fixture according to any one of claims 1-6 is used and comprises:
selecting a positioning shaft matched with a lens to be detected, mounting the positioning shaft on a lens adjusting frame, rotating the positioning shaft until the lens is horizontal and the reflecting surface of the lens contacts the free end of a positioning rod of a positioner so as to finish horizontal initial positioning;
driving the lens adjusting frame to move along the direction of the first sliding rail until the lens adjusting frame is positioned in a working area of the range finder;
the height of the range finder is adjusted to meet the distance measuring requirement, and the range finder slides along the second sliding rail direction so as to read out all detection data of the lens in the axial direction;
and rotating the positioning shaft until the lens is in a vertical state, and reading all detection data of the lens in the vertical state.
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| CN201710747578.7A CN107345849B (en) | 2017-08-25 | 2017-08-25 | Lens detection and calibration tool and method |
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| CN201710747578.7A CN107345849B (en) | 2017-08-25 | 2017-08-25 | Lens detection and calibration tool and method |
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| CN108871737B (en) * | 2018-07-23 | 2023-10-13 | 中国工程物理研究院激光聚变研究中心 | Multifunctional optical element mounting and leveling platform |
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| CN110455505A (en) * | 2019-09-12 | 2019-11-15 | 西安昂科光电有限公司 | A kind of lens eccentric measuring instrument |
| CN110954135B (en) * | 2019-12-11 | 2024-07-23 | 北京小狗吸尘器集团股份有限公司 | Tool for detecting rotation of IMU (inertial measurement Unit) component and IMU component rotation detection method |
| CN111014970A (en) * | 2019-12-30 | 2020-04-17 | 江苏金海创科技有限公司 | Lens light path detects frock |
| CN111141744B (en) * | 2019-12-31 | 2023-01-31 | 广州维思车用部件有限公司 | Lens detection device |
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