CN218381531U - Multi-point position detection device for special-shaped curved surface optical element - Google Patents

Abstract

A multi-point position detection device for an optical element with a special-shaped curved surface comprises an adjusting seat and a clamp seat arranged on the adjusting seat, wherein the adjusting seat is connected with the clamp seat through a swing arm mechanism, the swing arm mechanism comprises a rotation angle adjusting plate and a swing arm, and the swing arm is rotatably connected with the rotation angle adjusting plate around a first rotation shaft; a plurality of first limiting parts are formed on the rotating angle adjusting plate, are distributed at intervals along a first path, and the first path is a circle formed around the first rotating shaft; a second limiting part is formed on the swing arm and is positioned outside the straight line where the first rotating shaft is positioned; the second limiting part and the first limiting part are matched with each other to limit the corresponding first limiting part to move relative to the second limiting part. Different measurement point positions of the glass reach the same spatial position and the curved surface profile of the measurement point is perpendicular to the incident light direction by adjusting the adjusting seat and the swing arm structure, and an X-Y coordinate and a deflection angle are fixed at each measurement point position, so that the measurement accuracy and stability are ensured.

Description

Multi-point position detection device for special-shaped curved surface optical element

Technical Field

The application belongs to the technical field of optical element detection, and particularly relates to a multi-point position detection device for an optical element with a special-shaped curved surface.

Background

The special-shaped curved surface optical element has any shape, can be regular or irregular, has the advantages of excellent optical performance, good system integration and the like as a next-generation modern optical element, and has great application potential in optical systems of aviation, deep submergence, green energy, precise illumination and the like. The development of profiled optical elements provides greater design flexibility and range of innovation in optical design, but at the same time presents new challenges for optical fabrication and inspection.

At present, the traditional detection scheme of the special-shaped curved surface optical element mainly comprises two detection schemes, wherein one scheme is that a clamp slides through a slide rail to adjust the X-Y coordinate of a product measurement point position through an X-Y axial platform, so that the measurement purpose is achieved. The device has the advantages that the device can quickly and accurately grasp the plane X-Y coordinate position of the measuring point position, and is suitable for measuring plane glass. The defects are that the product can not be rotated, and the curved surface product can not be measured perpendicular to the surface of the product, so that the optical performance of the curved surface glass can not be measured. And the other method is to respectively manufacture a corresponding clamp for each point position of the special-shaped curved surface optical element to carry out measurement. The angle and the height of each clamp are adjusted when the clamp is designed, and a positioning hole is arranged at the bottom of each clamp to ensure that the measuring hole is positioned below the lens. The advantage is that no adjustment is required, one to one correspondence. The defects are that the processing cost is high, and the more point positions, the higher the cost is; the clamp occupies more storage space, and is difficult to distinguish, take and place; the glass is clamped for many times, and other appearance defects are easily caused.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a multi-point position detection device for an optical element with a special-shaped curved surface, and aims to solve the problems that the optical performance of curved glass is difficult to measure and the detection efficiency is low in the traditional detection method.

The embodiment of the application provides a multi-point position detection device for an optical element with a special-shaped curved surface, which comprises an adjusting seat and a clamp seat arranged on the adjusting seat, wherein the adjusting seat is connected with the clamp seat through a swing arm mechanism, the swing arm mechanism comprises a rotating angle adjusting plate arranged on the adjusting seat and a swing arm connected with the clamp seat, a plurality of first limiting parts are formed on the rotating angle adjusting plate, the first limiting parts are distributed at intervals along a first path, and the first path is a circle formed around a first rotating shaft;

the swing arm is connected with the rotation angle adjusting plate in a rotating way around the first rotation shaft; a second limiting part is formed on the swing arm and is positioned outside the straight line where the first rotating shaft is positioned;

the second limiting part is provided with a plurality of working positions, and the working positions correspond to the first limiting parts one by one; when the second limiting part rotates to any working position, the second limiting part and the first limiting part are matched with each other to limit the corresponding first limiting part to move relative to the second limiting part.

Furthermore, the linear distances of the first limiting part and the second limiting part relative to the first rotating shaft are equal.

Furthermore, the first limiting part is a positioning hole, and the second limiting part is a positioning pin.

Furthermore, the distribution position of the first limiting part is arranged according to the detection point position of the special-shaped curved surface optical element.

Furthermore, the adjusting seat comprises a base plate, a first moving device is arranged on the base plate, the first moving device comprises a first moving assembly and a first bearing assembly, and the first moving assembly enables the first bearing assembly to move towards a first direction;

the first bearing assembly is provided with a first moving device, the first moving device comprises a first moving assembly and a first bearing assembly, the first bearing assembly is connected with the rotating angle adjusting plate, the first moving assembly enables the first bearing assembly to move towards a first direction, and the first direction is perpendicular to the first direction.

Furthermore, a plurality of third limiting parts are arranged on the base plate, the third limiting parts are distributed at intervals along a second path, and the second path is a straight line formed by extending along the first direction;

the first bearing assembly is provided with a fourth limiting part, the fourth limiting part is provided with a plurality of working positions, and the working positions correspond to the third limiting parts one by one; when the fourth limiting part moves to any working position, the fourth limiting part and the third limiting part are matched with each other to limit the movement of the corresponding first bearing assembly relative to the base plate.

Furthermore, a plurality of fifth limiting parts are arranged on the first bearing component;

the second bearing component is provided with a sixth limiting part, the sixth limiting part is provided with a plurality of working positions, the working positions correspond to the fifth limiting parts one by one, and when the sixth limiting part moves to any working position, the sixth limiting part and the fifth limiting part are matched with each other to limit the second bearing component corresponding to the sixth limiting part to move relative to the first bearing component.

Further, the anchor clamps seat includes the swing arm connecting plate of being connected with the swing arm, and a anchor clamps keysets is connected to the swing arm connecting plate, and measurement anchor clamps are installed on the anchor clamps keysets, and the anchor clamps keysets includes an inclined surface, and the inclined surface is the anchor clamps keysets and measures the connection face of anchor clamps.

Furthermore, the measuring clamp comprises a clamping part, the surface of the clamping part is matched with the special-shaped curved surface optical element, and the back surface of the clamping part is a spherical surface;

the measuring clamp further comprises a base, the surface of the base is matched with the back face of the clamping portion, and the back face of the base is matched with the inclined surface of the clamp adapter plate.

Furthermore, the measuring clamp further comprises a positioning column, and the positioning column is used for fixing the clamping part on the base.

Compared with the prior art, the embodiment of the utility model beneficial effect who exists is: according to the multi-point position detection device for the special-shaped curved surface optical element, different measurement point positions of glass can reach the same spatial position through adjusting the adjusting seat and the swing arm structure, the curved surface profile of the measurement point is perpendicular to the incident light direction, an X-Y coordinate and a deflection angle are fixed at each measurement point position, and the measurement accuracy and stability are guaranteed.

Drawings

Fig. 1 is a schematic structural view of a multi-point position detection apparatus for an optical element with a special-shaped curved surface according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of a multi-point detection device for an optical element with a special-shaped curved surface according to an embodiment of the present disclosure

FIG. 3 is a schematic structural view of the swing arm structure shown in FIG. 1;

FIG. 4 is a schematic structural view of a first moving device in the adjusting base shown in FIG. 1;

FIG. 5 is a schematic structural view of a second moving device in the adjusting seat shown in FIG. 1;

FIG. 6 is a schematic view of a fixture adapter plate in a fixture mount according to an embodiment of the present application;

FIG. 7 is a schematic view of the measurement fixture in the fixture mount shown in FIG. 5;

FIG. 8 is a schematic structural view of another embodiment of a measurement fixture;

the reference numerals in the figures denote:

1. an adjusting seat; 2. a swing arm structure; 3. a clamp base;

11. a base plate; 12. a base plate; 13. a first mobile device; 14. a second mobile device; 15. a fixing plate;

21. a rotation angle adjusting plate; 22. swinging arms; 23. a rotating shaft;

31. a swing arm connecting plate; 32. a fixture adapter plate; 33. measuring a clamp;

131. a first moving assembly; 132. a first load bearing assembly; 141. a second moving assembly; 142. a second carrier assembly;

331. a clamping portion; 332. a base; 333. and a positioning column.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Example 1

Fig. 1 shows a schematic structural diagram of a multi-point position detection device for an optical element with a profiled curved surface according to a first embodiment of the present application, and for convenience of description, the schematic diagram only shows a part related to this embodiment, and a lens light source for detection is not shown in the drawing, and the technical solution adopted in this embodiment is specifically detailed as follows:

the multi-point position detection device for the optical element with the special-shaped curved surface provided by the embodiment mainly comprises three parts: adjust seat 1, swing arm structure 2 and anchor clamps seat 3. Referring to fig. 1 and 2, a bottom plate 11 of the adjusting base 1 is fixed on a machine table through screws, a backing plate 12 is fixed above the bottom plate 11 through bolts, the bottom plate 11 and the backing plate 12 jointly form a base, and the clamp base 3 is connected with the swing arm structure 2 through a swing arm connecting plate 31.

Since the optical element has a plurality of different surfaces due to its special shape, it is necessary to detect the optical performance of each surface, and in the detection, each surface needs to be detected perpendicular to the lens light source, and therefore, it is necessary to rotate the jig base by different angles around the Y axis and detect at a fixed angular position, which is called a detection point.

The specific structure of the swing arm mechanism 2 is shown in fig. 3, and includes a rotation angle adjusting plate 21 mounted on the adjusting base 1, a swing arm 22 connected to the fixture base, and a rotating shaft 23 for connecting the rotation angle adjusting plate 21 and the swing arm 22, and the swing arm mechanism 2 can make the optical element on the fixture base 3 rotate around the Y axis, so that the optical element can meet the detection requirements of each detection point. Therefore, in order to ensure that the optical element can be fixed at the detection point, a plurality of first position-limiting portions are formed on the rotation angle adjustment plate, and the plurality of first position-limiting portions are distributed at intervals along a first path, and the first path is a circle formed around the rotation shaft 23.

It should be noted that, the distribution intervals of the first position-limiting portions are set according to the detection points of the optical element, and may be uniformly distributed or non-uniformly distributed.

In addition, according to the relative position between the rotating shaft 23 and the rotation angle adjusting plate 21, the first path may be a whole circle, or a semicircle or an arc, and may be adjusted according to actual requirements.

The swing arm 22 is rotatably connected to the rotation angle adjusting plate 21 around the rotation shaft 23; a second limiting part opposite to the first limiting part is formed on the swing arm 2, and the second limiting part is located outside the straight line where the rotating shaft 23 is located, that is, the second limiting part does not coincide with the rotating shaft 23.

The second limiting part is provided with a plurality of working positions, and the working positions correspond to the first limiting parts one by one; in some embodiments, the first position-limiting portion may fill the entire first path, for example, when the position limitation is performed by magnetism, the magnetic stripe may be fully distributed on the first path as the first position-limiting portion, so that a user may perform the position limitation at any angle, and the working position of the second position-limiting portion may also be adjusted according to the user's requirement.

When the second limiting part rotates to any working position, the second limiting part and the first limiting part are mutually matched, and the matching comprises but is not limited to mutual approaching, mutual matching between parts or connection and fixation of other parts.

In this embodiment, the first position-limiting portion and the second position-limiting portion are both positioning holes, so that the linear distance from the first position-limiting portion to the rotating shaft 23 is equal to the linear distance from the second position-limiting portion to the rotating shaft 23.

A first moving device 13 is arranged on the base of the adjusting seat 1, the first moving device 13 comprises a first moving component 131 and a first bearing component 132, and the first moving component enables the first bearing component to move towards a first direction;

the backing plate 12 is provided with a plurality of third limiting parts, the plurality of third limiting parts are distributed at intervals along a second path, and the second path is a straight line formed by extending along the first direction. A fourth limiting part is arranged on the first bearing component 132, the fourth limiting part is provided with a plurality of working positions, and the working positions correspond to the third limiting parts one by one; when the fourth position-limiting portion moves to any working position, the fourth position-limiting portion and the third position-limiting portion cooperate with each other to limit the movement of the corresponding first bearing component 132 relative to the backing plate 12.

Referring to fig. 4, in this embodiment, the first moving device 13 is mounted on the pad 12, the first moving component is a Y-axis slide rail on a Y-axis slide rail mounting plate, and the first bearing component is an X-axis slide rail mounting plate. Wherein, the Y-axis slide rail mounting plate is fixed on the backing plate 12, and the upper surface thereof is provided with the Y-axis slide rail.

The second moving device 14 is disposed above the first bearing assembly 13, the second moving device 14 includes a second moving assembly 141 and a second bearing assembly 142, the second bearing assembly 142 is connected to the rotation angle adjusting plate 21, the second moving assembly 141 moves the second bearing assembly 142 in a second direction, and the second direction is perpendicular to the first direction.

A plurality of fifth limiting parts are arranged on the first bearing component 132; the second bearing component 142 is provided with a sixth limiting part, the sixth limiting part is provided with a plurality of working positions, the working positions correspond to the fifth limiting parts one by one, and when the sixth limiting part moves to any working position, the sixth limiting part and the fifth limiting part are matched with each other to limit the second bearing component corresponding to the sixth limiting part to move relative to the first bearing component.

Referring to fig. 5, the second moving device 14 is mounted on the first bearing assembly 132, the second moving assembly is an X-axis sliding rail, and the second bearing assembly is an X-axis coordinate adjusting plate. The X-axis slide rail is fixed on the X-axis slide rail mounting plate, and an X-axis coordinate adjusting plate is mounted on the X-axis slide rail mounting plate. The upper part of the X-axis coordinate adjusting plate is connected with a fixing plate 15 for fixing the swing arm structure 2.

In this embodiment, the first moving device 13 and the second moving device 14 both use a slide rail structure, and in order to enable the detection device to be stably fixed in the X-axis direction and the Y-axis direction, a Y-axis positioning plate is disposed on a side surface of the X-axis slide rail mounting plate, a third limiting portion is disposed on the Y-axis positioning plate, and a fourth limiting portion matched with the third limiting portion is disposed on the Y-axis slide rail mounting plate. Meanwhile, a fifth limiting part is arranged on the X-axis positioning plate, and a sixth limiting part matched with the fifth limiting part is arranged on the X-axis slide rail mounting plate. In this embodiment, the third, fourth, fifth, and sixth limiting portions are all located by using locating holes to match with fixing pins. In other embodiments, the position limiting is performed by magnetic attraction, electric assistance or other methods.

In this embodiment, the clamp seat 3 is connected to the swing arm structure 2 through one end of a swing arm connecting plate 31, and the front surface of the swing arm connecting plate 31 is used for installing the clamp adapter plate 32.

Referring to fig. 6, the fixture adapter plate 32 is used to fix the measuring fixture 33, and the connection surface between the fixture adapter plate 32 and the measuring fixture 33 is an inclined surface, and the inclination angle can be adjusted according to the specific specification of the optical element.

Referring to fig. 7, the measuring jig 33 is used to place an optical element to be measured, and its upper surface conforms to the profile of the optical element to be measured.

Based on the foregoing embodiment, a specific method for detecting the irregularly-shaped curved optical element by using the multi-point position detection device for an irregularly-shaped curved optical element provided by this embodiment is as follows:

the profiled curved optical element is placed on the measuring fixture 33.

The jig changeover plate 32 rotates the measurement jig 33 by a fixed angle, and adjusts the normal line of the measurement point on a plane perpendicular to the Y-axis.

The rotation angle of the measuring clamp 33 is adjusted by the swing arm structure 2, so that the normal line of the measuring clamp at the measuring point is vertical to the direction of the measuring light source, specifically, the swing arm 22 rotates around the rotating shaft 23, the positioning hole in the swing arm and the positioning hole in the rotation angle adjusting plate are overlapped to determine the measuring deflection angle, and then the bolt is inserted for fixing.

The X-Y coordinate is adjusted through the adjusting seat 1, so that the measuring clamp is located right below the measuring light source, specifically, the Y coordinate is positioned through the positioning hole of the Y axial positioning plate and the side hole of the X axial sliding rail mounting plate in an overlapping mode, then the bolt is inserted for fixing to adjust the Y coordinate, the X coordinate is positioned through the positioning hole of the X axial sliding rail mounting plate and the positioning hole of the upper plate and the lower plate of the X axial positioning plate in an overlapping mode, and then the bolt is inserted for fixing to adjust the X coordinate.

And finally, adjusting the lens light source in a Z coordinate so as to align the focal length of the optical element to be tested for testing.

It should be understood that, the description of each step in the foregoing embodiments does not mean the execution sequence, and should not limit the implementation process of the embodiments in this application in any way.

In the embodiment, the normal lines of all the points are adjusted on a plane perpendicular to a Y axis through a clamp, then the normal lines of all the points are respectively vertical by adjusting the Y axis to rotate, and finally the measuring point position is arranged under a lens by adjusting X-Y coordinates of the measuring point position. And finally, a clear optical imaging image can be obtained by adjusting the Z coordinate focus of the lens.

Therefore, the present embodiment has the following advantages:

1. the design is simple, and the contour of the curved surface clamp is designed without repeated deflection;

2. the processing cost is low, and since the special-shaped curved surface is difficult to process, the prior art needs to process one curved surface clamp for each measurement point, but the measurement requirement can be met only by processing one curved surface clamp, so that the material cost and the processing cost are saved, the production time is saved, and the verification efficiency is improved;

3. the appearance yield is improved, and because the optical element is only required to be clamped once in the whole detection process of the embodiment, the measurement efficiency is improved, and the possibility of poor appearance caused by improper operation of staff is reduced;

4. the measuring precision is improved, and because the fixed working position of the limiting part is preset in each measuring point position, the X-Y coordinate and the deflection angle of each measurement are fixed, and the measuring precision and stability are ensured.

Example 2

As a preferred embodiment, this embodiment is a further improvement of the measuring jig in the above embodiment, and the measuring jig in embodiment 1 has a limitation that only optical performance of normal lines on the same plane or on approximately the same plane can be measured, and the normal line direction of each measuring point of the profiled curved glass may not be on the same plane at all. The measurement jig in embodiment 1 has a small adaptation range.

In embodiment 2, referring to fig. 8, the measuring jig 33 includes a clamping portion 331, a surface of the clamping portion 331 is matched with the optical element with the special-shaped curved surface, and a back surface of the clamping portion 331 is a spherical surface;

the measuring fixture 33 further includes a base 332, wherein the surface of the base 332 is engaged with the back surface of the clamping portion 331, and the back surface of the base 332 is engaged with the inclined surface of the fixture adapter plate 32.

The measuring fixture further comprises positioning posts 333, and positioning posts 3 are used for fixing the clamping portion 331 and the optical element on the base 332. .

One surface of the measuring clamp is designed to imitate the outline of the optical element and is used for placing the optical element; the spherical surface is designed on the other side, so that the sealing performance of the clamp can be ensured when the clamp slides on the base at will, and the multi-angle measurement can be realized without light leakage.

The positioning column is used for facilitating the fixture to accurately find the measuring point position, so that the fixture is directly and vertically placed on the incident light source through the positioning column; and meanwhile, the function of fixing the clamp is also realized in the measuring process.

The base serves to provide a sealed passage for the light source to the fixture.

The holding portion 331 may be further provided with a plurality of measurement point marks for confirming whether the state of the optical element at the measurement point is satisfactory or not.

The scheme adopted by the embodiment enables the optical element to be placed at the test point position perpendicular to the incident light source through the rotation of the spherical surface, and the fitting relation of the spherical surface enables the clamp to rotate freely until the glass is placed at the test point position horizontally on the premise of guaranteeing no light leakage. The X-Y coordinates are guaranteed to be just below the lens by the locating pins. Therefore, the optical performance of a plurality of point positions of the glass can be measured by using the same clamp. The number of the processing clamps is small, so that the processing cost is low, the storage is convenient, the confusion is not easy, the processing time and the time for finding the clamp in verification are saved, and the efficiency of measurement and verification is improved.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims (10)

1. A multi-point position detection device for an optical element with a special-shaped curved surface comprises an adjusting seat and a clamp seat arranged on the adjusting seat, and is characterized in that the adjusting seat is connected with the clamp seat through a swing arm mechanism, the swing arm mechanism comprises a rotation angle adjusting plate arranged on the adjusting seat and a swing arm connected with the clamp seat, a plurality of first limiting portions are formed on the rotation angle adjusting plate, the first limiting portions are distributed at intervals along a first path, and the first path is a circle formed around a first rotation shaft;

the swing arm is rotatably connected to the rotating angle adjusting plate around the first rotating shaft; a second limiting part is formed on the swing arm and is positioned outside the straight line where the first rotating shaft is positioned;

the second limiting part is provided with a plurality of working positions, and the working positions correspond to the first limiting parts one by one; when the second limiting part rotates to any working position, the second limiting part and the first limiting part are matched with each other to limit the first limiting part corresponding to the second limiting part to move relative to the second limiting part.

2. The detecting device for detecting the rotation of the motor rotor according to claim 1, wherein the first limiting portion and the second limiting portion have equal linear distances relative to the first rotating shaft.

3. The detecting device for detecting the rotation of a motor rotor according to claim 2, wherein the first position-limiting portion is a positioning hole, and the second position-limiting portion is a positioning pin.

4. The detecting device according to claim 3, wherein the distribution position of the first limiting portion is set according to the detection point position of the optical element with the irregular curved surface.

5. The detecting device for detecting the rotation of the motor rotor according to the claims 1 to 4, wherein the adjusting seat comprises a base plate, a first moving device is arranged on the base plate, the first moving device comprises a first moving assembly and a first bearing assembly, and the first moving assembly enables the first bearing assembly to move towards a first direction;

the first bearing assembly is provided with a first moving device, the first moving device comprises a first moving assembly and a first bearing assembly, the first bearing assembly is connected with the rotating angle adjusting plate, the first moving assembly enables the first bearing assembly to move towards a first direction, and the first direction is perpendicular to the second direction.

6. The detecting device for detecting the rotation of the motor rotor according to the claim 5, wherein a plurality of third limiting parts are arranged on the base plate, and are distributed at intervals along a second path, and the second path is a straight line formed by extending along the first direction;

a fourth limiting part is arranged on the first bearing assembly, the fourth limiting part is provided with a plurality of working positions, and the working positions are in one-to-one correspondence with the third limiting parts; when the fourth limiting part moves to any working position, the fourth limiting part and the third limiting part are mutually matched to limit the first bearing assembly corresponding to the fourth limiting part to move relative to the base plate.

7. The detecting device for detecting the rotation of a motor rotor as claimed in claim 6, wherein a plurality of fifth limiting parts are arranged on the first bearing component;

the second bearing component is provided with a sixth limiting part, the sixth limiting part is provided with a plurality of working positions, the working positions correspond to the fifth limiting parts one by one, and when the sixth limiting part moves to any working position, the sixth limiting part and the fifth limiting part are matched with each other to limit the second bearing component corresponding to the sixth limiting part to move relative to the first bearing component.

8. The detection apparatus according to any one of claims 1 to 3, wherein the fixture base comprises a swing arm connecting plate connected to the swing arm, the swing arm connecting plate is connected to a fixture adapter plate, the measurement fixture is mounted on the fixture adapter plate, and the fixture adapter plate comprises an inclined surface, and the inclined surface is a connecting surface of the fixture adapter plate and the measurement fixture.

9. The inspection apparatus of claim 8, wherein the measurement fixture includes a clamping portion, a surface of the clamping portion is engaged with the profiled curved optical element, and a back surface of the clamping portion is spherical;

the measuring clamp further comprises a base, the surface of the base is matched with the back face of the clamping part, and the back face of the base is matched with the inclined surface of the clamp adapter plate.

10. The inspection device of claim 9, wherein the measurement fixture further comprises a positioning post for securing the clamping portion to the base.

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