Laser interference type lens surface detector

Abstract

The utility model discloses a laser interference type lens surface detector which comprises a detector body, a light beam expander, an optical lens and a support, the light beam expander is arranged at the top of the detector body, the optical lens is arranged on one side of the light beam expander, the support is arranged at the bottom of the detector body, a U-shaped frame is fixedly installed on one side of the detector body, and the U-shaped frame is fixedly installed on the other side of the detector body. An auxiliary shaft is arranged in the U-shaped frame, one end of the auxiliary shaft is sleeved with a protruding plate, the protruding plate, placing grooves, a placing rod, an L-shaped plate, a vertical strip and a suction cup are arranged, the placing rod is inserted into one placing groove in a penetrating mode, a limiting nut and one end of the placing rod are arranged in a threaded sleeving mode, and then the protruding plate and the placing rod can be installed; due to the fact that the wall face is made of smooth stone, the suction cup can be firmly adsorbed on the wall face, reduction of external vibration and interference is facilitated, the detector body is kept in a stable state, and therefore measurement precision and repeatability are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of lens surface inspection instruments, and in particular to a laser interferometric lens surface inspection instrument. Background Technology

[0002] A laser interferometer for lens surface inspection is a device that uses the principle of laser interference to inspect the surface of a lens. It is mainly used for high-precision inspection of the surface morphology of optical lenses, especially in the manufacturing and quality control process. By emitting a laser beam and utilizing the interference effect, the instrument can very accurately detect minute defects, shape errors and wavefront distortions on the lens surface.

[0003] The inspection instrument is usually placed on a table for inspection. When subjected to external forces, the inspection instrument shakes significantly, which can affect the inspection quality of the laser beam on the lens. Therefore, it is particularly important to design a laser interferometric lens surface inspection instrument. Utility Model Content

[0004] The purpose of this invention is to provide a laser interferometric lens surface inspection instrument to solve the problem mentioned in the background art that the instrument shakes significantly under external force, which affects the inspection quality of the laser beam on the lens.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a laser interferometric lens surface inspection instrument, comprising an instrument body, a beam expander, an optical lens, and a support. The beam expander is disposed on the top of the instrument body, the optical lens is disposed on one side of the beam expander, and the support is disposed on the bottom of the instrument body. A U-shaped frame is fixedly installed on one side of the instrument body. An auxiliary shaft is disposed inside the U-shaped frame. A protruding plate is sleeved on one end of the auxiliary shaft. Multiple placement grooves are formed on the surface of the protruding plate. A placement rod is placed inside one of the placement grooves. An L-shaped plate is disposed at one end of the placement rod, and a suction cup is disposed on one side of the L-shaped plate.

[0006] As a preferred embodiment of this utility model, a vertical strip is fixedly installed on the top of the suction cup, and one side of the L-shaped plate is fixedly connected to one end of the support rod.

[0007] As a preferred embodiment of this utility model, one end of the vertical strip is fixedly connected to the other side of the L-shaped plate.

[0008] As a preferred embodiment of this utility model, the outer surface of the support rod is provided with external threads, and a limiting nut is threaded onto one end of the support rod.

[0009] As a preferred embodiment of this utility model, the multiple placement slots are arranged at equal intervals.

[0010] As a preferred embodiment of this utility model, the convex plate is fixedly sleeved on one end of the auxiliary shaft, and a rotating ring is rotatably installed on one side of the U-shaped frame.

[0011] In a preferred embodiment of this invention, one end of the rotating ring is fixedly connected to one end of the auxiliary shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model incorporates a convex plate, a support groove, a support rod, an L-shaped plate, a vertical strip, and a suction cup. The support rod is inserted into one of the support grooves, and a limiting nut is threaded onto one end of the support rod to install the convex plate and the support rod, thus ensuring the stability of the suction cup. Rotating the rotating ring causes the convex plate to rotate synchronously, making the suction cup parallel to the wall surface. One side of the suction cup presses against the wall surface. Since the wall surface is smooth stone, the suction cup will firmly adhere to the wall surface, helping to reduce external vibration and interference, keeping the measuring instrument in a stable state, thereby improving the accuracy and repeatability of the measurement.

[0014] 2. This utility model is equipped with an auxiliary shaft, a rotating ring, a limiting nut, and a U-shaped frame. Rotating the rotating ring clockwise will drive the auxiliary shaft, which is fixedly connected to it, to rotate clockwise, which in turn drives the convex plate, which is fixedly sleeved with it, to rotate. The convex plate can then be stored on one side of the detector body, making it easy to store the suction cup, reducing its footprint, and facilitating the handling of the detector. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of the present utility model;

[0016] Figure 2 This is a bottom view of the structure of this utility model;

[0017] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a partial side view of the structure of this utility model.

[0019] In the diagram: 1. Detector body; 2. Beam expander; 3. Optical lens; 4. Support; 5. U-shaped frame; 6. Auxiliary shaft; 7. Rotating ring; 8. Convex plate; 9. Shelf groove; 10. Shelf rod; 11. L-shaped plate; 12. Vertical bar; 13. Suction cup; 15. Limit nut. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution for a laser interferometric lens surface inspection instrument:

[0022] Example 1:

[0023] like Figure 1-3 As shown, a laser interferometric lens surface inspection instrument includes an inspection body 1, a beam expander 2, an optical lens 3, and a support 4. The beam expander 2 is located on the top of the inspection body 1, the optical lens 3 is located on one side of the beam expander 2, and the support 4 is located on the bottom of the inspection body 1. A U-shaped frame 5 is fixedly installed on one side of the inspection body 1. An auxiliary shaft 6 is provided inside the U-shaped frame 5. A protruding plate 8 is sleeved on one end of the auxiliary shaft 6. Multiple placement grooves 9 are formed on the surface of the protruding plate 8, and a placement rod 1 is placed inside one of the placement grooves 9. 0. One end of the support rod 10 is provided with an L-shaped plate 11, and one side of the L-shaped plate 11 is provided with a suction cup 13. By using the limit nut 15 to threadedly fit one end of the support rod 10, the protruding plate 8 and the support rod 10 can be installed, thereby ensuring the stability of the suction cup 13. Rotating the rotating ring 7 drives the protruding plate 8 to rotate synchronously, so that the suction cup 13 is parallel to the wall surface. One side of the suction cup 13 presses against the wall surface. Since the wall surface is smooth stone, the suction cup 13 will be firmly attached to the wall surface, which helps to reduce external vibration and interference.

[0024] Example 2:

[0025] Based on Example 1, such as Figure 1 and Figure 4 As shown, the outer surface of the support rod 10 is provided with external threads, and a limiting nut 15 is threadedly fitted at one end of the support rod 10. The protruding plate 8 is fixedly fitted to one end of the auxiliary shaft 6. A rotating ring 7 is rotatably installed on one side of the U-shaped frame 5. By setting the auxiliary shaft 6, the rotating ring 7, the limiting nut 15 and the U-shaped frame 5, rotating the rotating ring 7 clockwise will drive the auxiliary shaft 6 fixedly connected to it to rotate clockwise, which will also drive the protruding plate 8 fixedly fitted to it to rotate. The protruding plate 8 can then be stored on one side of the detector body 1, which is convenient for storing the suction cup 13.

[0026] Working Principle: The laser interferometric lens surface inspection instrument is a device that uses the principle of laser interference to inspect the surface of lenses. It is mainly used for high-precision inspection of the surface morphology of optical lenses, especially in manufacturing and quality control processes. This instrument emits a laser beam and utilizes the interference effect to very accurately detect minute defects, shape errors, and wavefront distortions on the lens surface. The working principle involves the beam expander 2 emitting a stable laser beam that illuminates the lens surface. By measuring the interference fringes between the reflected light and the reference light, detailed information about the lens surface shape is obtained. The shape error of the lens surface is analyzed by calculating the changes in the interference fringes. The inspection instrument is typically placed on a table for inspection. Under external forces, the instrument can shake significantly, affecting the quality of the laser beam's inspection of the lens. Therefore, designing a laser interferometric lens surface inspection instrument is particularly important. In this case, the instrument body 1 is placed on the table... The instrument body 1 is surrounded by walls made of smooth stone. The support rod 10 is inserted into one of the support slots 9. The limit nut 15 is threaded onto one end of the support rod 10 to install the protruding plate 8 and the support rod 10, thus ensuring the stability of the suction cup 13. Rotating the rotating ring 7 causes the protruding plate 8 to rotate synchronously, making the suction cup 13 parallel to the wall. One side of the suction cup 13 presses against the wall. Since the wall is made of smooth stone, the suction cup 13 will be firmly attached to the wall, which helps to reduce external vibration and interference, keeping the instrument body 1 in a stable state, thereby improving the accuracy and repeatability of the measurement. Rotating the rotating ring 7 clockwise will cause the auxiliary shaft 6, which is fixedly connected to it, to rotate clockwise, which will also cause the protruding plate 8, which is fixedly fitted to it, to rotate. The protruding plate 8 can then be stored on one side of the instrument body 1, making it easy to store the suction cup 13, reducing its footprint, and facilitating the transport of the instrument.

[0027] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser interferometric lens surface inspection instrument, comprising an inspection instrument body (1), a beam expander (2), an optical lens (3), and a support (4), wherein the beam expander (2) is disposed on the top of the inspection instrument body (1), the optical lens (3) is disposed on one side of the beam expander (2), and the support (4) is disposed on the bottom of the inspection instrument body (1), characterized in that: A U-shaped frame (5) is fixedly installed on one side of the detector body (1). An auxiliary shaft (6) is provided inside the U-shaped frame (5). A protruding plate (8) is sleeved on one end of the auxiliary shaft (6). A plurality of placement grooves (9) are opened on the surface of the protruding plate (8). A placement rod (10) is placed inside one of the placement grooves (9). An L-shaped plate (11) is provided on one end of the placement rod (10). A suction cup (13) is provided on one side of the L-shaped plate (11).

2. The laser interferometric lens surface inspection instrument according to claim 1, characterized in that: A vertical strip (12) is fixedly installed on the top of the suction cup (13), and one side of the L-shaped plate (11) is fixedly connected to one end of the support rod (10).

3. The laser interferometric lens surface inspection instrument according to claim 2, characterized in that: One end of the vertical strip (12) is fixedly connected to the other side of the L-shaped plate (11).

4. The laser interferometric lens surface inspection instrument according to claim 1, characterized in that: The outer surface of the support rod (10) is provided with external threads, and a limiting nut (15) is threaded onto one end of the support rod (10).

5. The laser interferometric lens surface inspection instrument according to claim 1, characterized in that: The multiple placement slots (9) are arranged at equal intervals.

6. The laser interferometric lens surface inspection instrument according to claim 1, characterized in that: The convex plate (8) is fixedly sleeved on one end of the auxiliary shaft (6), and a rotating ring (7) is rotatably installed on one side of the U-shaped frame (5).

7. The laser interferometric lens surface inspection instrument according to claim 6, characterized in that: One end of the rotating ring (7) is fixedly connected to one end of the auxiliary shaft (6).

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