Calibration device for rectangular prism

Abstract

The utility model provides a rectangular prism calibration device which comprises a base, the base is provided with a hollow support, a first auto-collimation tube and a second auto-collimation tube, the first auto-collimation tube and the second auto-collimation tube are arranged on two sides of the hollow support, the height of the second auto-collimation tube is lower than that of the first auto-collimation tube, a reflective mirror is arranged in the hollow support, and the reflective mirror is connected with the hollow support. A cantilever located above the second auto-collimation tube is welded to the peripheral wall of the hollow support, a rotary disc is arranged at the top of the cantilever, mirror bases which are evenly distributed in the circumferential direction are arranged on the disc face of the rotary disc, and when the rotary disc rotates, the mirror bases which are evenly distributed pass through the top of the hollow support in turn. According to the utility model, through arranging the lens bases which are uniformly distributed in the circumferential direction on the turntable, a plurality of rectangular prism groups to be detected can be loaded conveniently, and when the turntable rotates, the uniformly distributed rectangular prism groups to be detected are located above the hollow support in turn, so that other rectangular prism groups to be detected can be switched more conveniently and quickly; and the calibration efficiency of the plurality of right-angle prism groups to be calibrated is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical element calibration, in particular to a right-angle prism calibration device. Background Art

[0002] There are professional detection methods for the detection of the angle of the right-angle prism itself, but the application of the right-angle prism often requires clamping. For the right-angle prism after clamping, the mounting surface becomes its reference, so whether the accuracy of the right-angle prism after clamping can still meet the use requirements requires a certain calibration device for inspection and auxiliary adjustment to meet the use requirements after clamping.

[0003] At present, the utility model with the publication number CN216485739U proposes a calibration device for a right-angle prism, which is used to solve the calibration problem of whether the right-angle prism can meet the accuracy requirements after installation and clamping. It includes two autocollimators, a reflector and a right-angle prism group to be inspected, and the three parts are fixed on the base; the two autocollimators are used to calibrate the angle difference between the incident light and the outgoing light of the right-angle prism, and the accuracy of its graticule determines the calibration accuracy of the device; the mounting surface of the reflector is at an angle of 45° to the horizontal plane, and its function is to convert the horizontal target image received by one of the autocollimators into a vertical image; the right-angle prism group to be inspected converts the vertical image reflected by the reflector through the reflection surface inside its hypotenuse, and finally converts it into a horizontal image, so that the target image is formed on the graticule in another autocollimator. By using the utility model device, the accuracy of the right-angle prism itself and the assembly accuracy of the right-angle prism can be quickly calibrated.

[0004] However, the above-mentioned prior art still has some shortcomings in actual use: 1. The right-angle prism group to be tested in the above-mentioned prior art is connected to the connecting seat by two first screws. When the number of right-angle prism groups to be tested is too large, the switching convenience of different right-angle prism groups to be tested is poor due to the influence of disassembly and assembly of the first screws, which will reduce the calibration efficiency; 2. The right-angle prism group to be tested is fastened to the connecting seat by two first screws. This kind of screwing positioning method has the defects of inconvenient disassembly and time-consuming disassembly.

[0005] Therefore, the utility model provides a right-angle prism calibration device. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a right-angle prism calibration device to solve the problems raised in the above-mentioned background technology. The utility model has the advantages of being more convenient to switch to other right-angle prism groups to be inspected, and also has the advantage of being more convenient to assemble and disassemble the right-angle prism group.

[0007] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a calibration device for a right-angle prism, including a base, on which a hollow support and a first autocollimator and a second autocollimator located on both sides of the hollow support are arranged, the height of the second autocollimator is lower than that of the first autocollimator, a reflector is arranged in the hollow support, a cantilever located above the second autocollimator is welded to the outer peripheral wall of the hollow support, a turntable is arranged on the top of the cantilever, and mirror seats uniformly distributed in the circumferential direction are arranged on the disk surface of the turntable, and when the turntable rotates, the uniformly distributed mirror seats pass through the top of the hollow support in turn.

[0008] Furthermore, the mirror base includes a support plate and a door-shaped elastic telescopic frame, the upper end surface of the support plate is penetrated by a light window, the bottom of the door-shaped elastic telescopic frame and the top of the support plate are welded and connected, the crossbeam at the top of the door-shaped elastic telescopic frame is located above the light window, and the bottom of the crossbeam is welded with two positioning pins respectively located on both sides of the light window.

[0009] Furthermore, a handle is welded on the top of the crossbeam.

[0010] Furthermore, the turntable includes a positioning shaft and an annular plate coaxial with the positioning shaft, a support plate with one end welded to the top of the positioning shaft and connected to the inner wall of the annular plate, a positioning sleeve welded to the free end of the cantilever and sleeved on the outside of the positioning shaft, the positioning sleeve is rotatably connected to the positioning shaft through a bearing, and the lower end face of the support plate is welded to the upper end face of the annular plate.

[0011] Furthermore, a light beam passing hole opposite to the light window is formed on the top of the annular plate.

[0012] Furthermore, a positioning plate is welded on the side of the support plate away from the positioning axis, a spherical pit is opened at the bottom of the positioning plate, an elastic telescopic pin is arranged on the top of the hollow support, and a ball with a ball diameter matching the spherical pit is arranged on the top of the elastic telescopic pin.

[0013] Furthermore, the locating pin is a conical structure with its small end facing the support plate, and a limit pin coaxial with the locating pin is welded on the upper end surface of the support plate, and the outer diameter of the limit pin is smaller than the outer diameter of the large end of the locating pin and greater than or equal to the outer diameter of the small end of the locating pin.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. The utility model is convenient for loading a plurality of right-angle prism groups to be inspected by arranging circumferentially evenly distributed mirror seats on the turntable. When the turntable rotates, the evenly distributed right-angle prism groups to be inspected will be located above the hollow support in turn, which has the advantage of being more convenient and quick to switch other right-angle prism groups to be inspected, thereby improving the efficiency of the inspection and calibration of a plurality of right-angle prism groups to be inspected.

[0016] 2. The utility model arranges two positioning pins on the door-shaped elastic telescopic frame, and utilizes the elastic telescopic function of the door-shaped elastic telescopic frame to facilitate the rapid positioning of the right-angle prism group to be inspected on the mirror base, and can also quickly separate the right-angle prism group to be inspected from the mirror base, thereby greatly improving the convenience of assembly and disassembly of the right-angle prism group to be inspected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a right-angle prism calibration device of the utility model;

[0018] Figure 2 for Figure 1 The main view;

[0019] Figure 3 for Figure 1 The enlarged schematic diagram of the part "a" in the middle;

[0020] Figure 4 It is a schematic diagram of the connection between the elastic telescopic pin and the hollow support of a right-angle prism calibration device of the utility model;

[0021] Figure 5 The utility model is a schematic diagram of a spherical concave pit of a right-angle prism calibration device.

[0022] In the figure: 1. base; 2. hollow support; 3. first autocollimator; 4. second autocollimator; 5. reflector; 6. cantilever; 61. positioning sleeve; 7. turntable; 71. positioning shaft; 711. support plate; 72. annular plate; 721. light beam passage hole; 8. mirror seat; 81. support plate; 811. light window; 812. positioning plate; 8121. spherical pit; 813. limit pin; 82. door-type elastic telescopic frame; 821. crossbeam; 8211. positioning pin; 8212. handle; 9. elastic telescopic pin; 91. ball bearing. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] See also Figures 1 to 5The utility model provides a technical solution: a calibration device for a right-angle prism, comprising a base 1, a hollow support 2 and a first autocollimator 3 and a second autocollimator 4 located on both sides of the hollow support 2 are arranged on the base 1, the height of the second autocollimator 4 is lower than that of the first autocollimator 3, a reflector 5 is arranged in the hollow support 2, and the top of the hollow support 2 is in an open state. When calibrating the right-angle prism group to be inspected, it is necessary to place it on the top of the hollow support 2. At this time, the first autocollimator 3 and the second autocollimator 4 can calibrate the right-angle prism group to be inspected through the reflector 5. The specific calibration principle adopts the existing technology mentioned in the background technology, and this application will not describe it in detail. The technical problem to be solved by this application is how to improve the efficiency of calibration switching of multiple right-angle prism groups to be inspected, and how to improve the efficiency of calibration, assembly and disassembly of the right-angle prism group to be inspected.

[0025] In the present technical solution, a cantilever 6 located above the second autocollimator 4 is welded to the outer peripheral wall of the hollow support 2, and a turntable 7 is arranged on the top of the cantilever 6. The disk surface of the turntable 7 is provided with mirror seats 8 evenly distributed in the circumferential direction. The function of the mirror seats 8 is to support and position the inspection group of the right-angle prism to be inspected. One mirror seat 8 corresponds to one inspection group of the right-angle prism to be inspected. When the turntable 7 rotates, the evenly distributed mirror seats 8 pass through the top of the hollow support 2 in turn, so as to realize the rapid switching of the inspection of different inspection groups of the right-angle prism to be inspected.

[0026] Specifically, the preferred structure of the mirror base 8 is that it includes a support plate 81 and a door-shaped elastic telescopic frame 82, the upper end surface of the support plate 81 is the placement surface of the right-angle prism inspection group to be inspected, and the upper end surface of the support plate 81 is penetrated with a light window 811, which is convenient for the inspection light to enter the right-angle prism inspection group to be inspected. The bottom of the door-shaped elastic telescopic frame 82 and the top of the support plate 81 are welded and connected, wherein the two columns on the door-shaped elastic telescopic frame 82 are two-section telescopic structures, and tension springs are arranged in the two-section telescopic structures. Under the action of the tension spring, the two columns are in a contracted state, that is, the crossbeam 821 on the door-shaped elastic telescopic frame 82 is in a state of reduced height. The crossbeam 821 at the top of the door-shaped elastic telescopic frame 82 is located above the light window 811, and two positioning pins 8211 are welded to the bottom of the crossbeam 821, which are respectively located on both sides of the light window 811. In this embodiment, ear plates with positioning holes are set on both sides of the right-angle prism inspection group to be inspected. When the positioning pins 8211 are inserted into the positioning holes on both sides of the right-angle prism inspection group to be inspected, the right-angle prism inspection group to be inspected and the lens holder 8 are in a squeezed and limited state. Among them, a handle 8212 is welded on the top of the crossbeam 821, and the handle 8212 is a component for holding and controlling the up and down movement of the crossbeam 821.

[0027] Furthermore, the locating pin 8211 is of a conical structure and its small end faces the support plate 81. A limit pin 813 coaxial with the locating pin 8211 is welded to the upper end surface of the support plate 81. The outer diameter of the limit pin 813 is smaller than the outer diameter of the large end of the locating pin 8211 and is greater than or equal to the outer diameter of the small end of the locating pin 8211. When in use, the diameter of the large end of the locating pin 8211 is larger than the aperture of the locating holes on the ear plates on both sides of the right-angle prism inspection group to be inspected, and its small end is smaller than the aperture of the locating hole, and the outer diameter of the limit pin 813 is smaller than the aperture of the above-mentioned locating hole. The purpose is to control the locating pin 8211 to squeeze the ear plates on both sides of the right-angle prism inspection group to be inspected after being inserted into the locating hole, and the limit pin 813 plays a role in guiding and limiting the right-angle prism inspection group to be inspected.

[0028] In this embodiment, the turntable 7 includes a positioning shaft 71 and an annular plate 72 coaxial with the positioning shaft 71. A support plate 711 is welded to the top of the positioning shaft 71, and one end of the support plate 71 is welded to the inner wall of the annular plate 72. The free end of the cantilever 6 is welded to a positioning sleeve 61 that is sleeved on the outside of the positioning shaft 71. The positioning sleeve 61 is rotatably connected to the positioning shaft 71 through a bearing. The lower end surface of the support plate 81 is welded to the upper end surface of the annular plate 72, so that when the annular plate 72 is manually rotated, different right-angle prism inspection groups to be inspected can be switched to be located above the hollow support 2.

[0029] Furthermore, a light beam passage hole 721 opposite to the light window 811 is provided on the top of the annular plate 72. The light beam passage hole 721 has the same function as the light window 811, facilitating light transmission between the right-angle prism inspection group to be inspected and the reflector 5.

[0030] In this embodiment, a positioning plate 812 is welded on the side of the support plate 81 away from the positioning shaft 71, and a spherical concave pit 8121 is provided at the bottom of the positioning plate 812. An elastic telescopic pin 9 is provided at the top of the hollow support 2. The elastic telescopic pin 9 adopts a common two-section telescopic pin structure, and a support spring is built into the telescopic pin. Under the action of the support spring, the elastic telescopic pin 9 is in an extended state, and a ball 91 with a ball diameter that matches the spherical concave pit 8121 is provided at the top of the elastic telescopic pin 9. The function of this elastic telescopic pin 9 is to limit the mirror seat 8 so that the mirror seat 8 can stay at the set calibration position. Specifically, when the positioning plate 812 touches the ball 91, the elastic telescopic pin 9 will shrink and the support spring therein will be compressed. When the ball 91 enters the spherical pit 8121, the current positioning plate 812 is limited at this time, and then the right-angle prism inspection group to be inspected adjacent to the current positioning plate 812 is inspected and calibrated. After the inspection is completed, the annular plate 72 is rotated forcefully, and the spherical pit 8121 will squeeze the ball 91 and finally separate from the ball 91, so that the inspected right-angle prism inspection group is moved out of the inspection station.

[0031] Working principle: When in use, hold the handle 8212 and lift it up, the crossbeam 821 moves upward, and then put a rectangular prism inspection group to be inspected on the support plate 81, and at the same time ensure that the positioning holes on the ear plates on both sides of the rectangular prism inspection group to be inspected are inserted into the limit pins 813 to prevent the rectangular prism inspection group to be inspected from being misplaced, release the handle 8212 downward, the bottom of the positioning pin 8211 will be inserted into the positioning holes on both sides of the rectangular prism inspection group to be inspected, and then squeeze the ear plates on both sides of the rectangular prism inspection group to be inspected. At this time, the current rectangular prism inspection group to be inspected and the mirror seat 8 are docked, and the connection of other rectangular prism inspection groups to be inspected and the corresponding mirror seats 8 is completed in this way. Manually rotate the annular plate 72 so that the spherical pit 8121 corresponding to one of the mirror seats 8 coincides with the ball 91, and the rectangular prism inspection group to be inspected on the mirror seat 8 is in the inspection and calibration station. After the inspection and calibration is completed, push the annular plate 72 hard to switch to the next rectangular prism inspection group to be inspected on the mirror seat 8.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A right angle prism calibration device, comprising a base (1), wherein the base (1) is provided with a hollow support (2) and a first autocollimator (3) and a second autocollimator (4) located on both sides of the hollow support (2), wherein the height of the second autocollimator (4) is lower than the height of the first autocollimator (3), and a reflector (5) is provided in the hollow support (2), characterized in that: A cantilever (6) located above the second autocollimator (4) is welded to the outer peripheral wall of the hollow support (2); a turntable (7) is arranged on the top of the cantilever (6); and mirror seats (8) evenly distributed in the circumferential direction are arranged on the surface of the turntable (7); when the turntable (7) rotates, the evenly distributed mirror seats (8) pass through the top of the hollow support (2) in turn.

2. The device for calibrating a right-angle prism according to claim 1, characterized in that: The mirror base (8) comprises a support plate (81) and a door-shaped elastic telescopic frame (82); a light window (811) is provided through the upper end surface of the support plate (81); the bottom of the door-shaped elastic telescopic frame (82) is welded to the top of the support plate (81); a crossbeam (821) at the top of the door-shaped elastic telescopic frame (82) is located above the light window (811); and two positioning pins (8211) are welded to the bottom of the crossbeam (821) and are respectively located on both sides of the light window (811).

3. The device for calibrating a right-angle prism according to claim 2, characterized in that: A handle (8212) is welded to the top of the crossbeam (821).

4. The device for calibrating a right-angle prism according to claim 2, characterized in that: The turntable (7) comprises a positioning shaft (71) and an annular plate (72) coaxial with the positioning shaft (71); a support plate (711) having one end welded to the top of the positioning shaft (71) and connected to the inner peripheral wall of the annular plate (72); a positioning sleeve (61) sleeved on the outside of the positioning shaft (71) is welded to the free end of the cantilever (6); the positioning sleeve (61) is rotatably connected to the positioning shaft (71) via a bearing; and a lower end surface of the support plate (81) is welded to an upper end surface of the annular plate (72).

5. The device for calibrating a right-angle prism according to claim 4, characterized in that: The top of the annular plate (72) is provided with a light beam passage hole (721) opposite to the light window (811).

6. The device for calibrating a right-angle prism according to claim 2, characterized in that: A positioning plate (812) is welded on the side of the support plate (81) facing away from the positioning shaft (71), and a spherical concave pit (8121) is provided at the bottom of the positioning plate (812). An elastic telescopic pin (9) is provided at the top of the hollow support (2), and a ball (91) whose ball diameter is matched with the spherical concave pit (8121) is provided at the top of the elastic telescopic pin (9).

7. The device for calibrating a right-angle prism according to claim 2, characterized in that: The positioning pin (8211) is of a conical structure with its small end facing the support plate (81); a limiting pin (813) coaxial with the positioning pin (8211) is welded to the upper end surface of the support plate (81); the outer diameter of the limiting pin (813) is smaller than the outer diameter of the large end of the positioning pin (8211) and is greater than or equal to the outer diameter of the small end of the positioning pin (8211).

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