Objective lens alignment test device for laser rangefinder

Abstract

The present invention discloses an objective lens alignment test device for a laser rangefinder, relates to the technical field of test equipment, and aims to solve the technical problem of objective lens alignment test of a rangefinder. The technical scheme thereof is as follows: the device comprises a base, four vertically arranged fixing rods are fixedly connected to the base, a test seat is arranged on the top of the fixing rods, a circular through groove is provided on the surface of the test seat, a rotating table is rotatably connected in the through groove, a first through hole is provided at the axis of the rotating table, a second through hole is provided on one side of the rotating table located at the first positioning hole, a positioning edge is provided on the peripheral side of the rotating table located at the first through hole and the second through hole, a half-reflecting half-mirror arranged at an angle of 45 degrees to the horizontal plane is arranged on the workbench located below the test seat, and an image receiving component is also arranged on the workbench. The object of the present invention is to provide an objective lens alignment test device for a laser rangefinder.

Description

Technical Field

[0001] The invention relates to the technical field of testing equipment, and more particularly to an objective lens alignment testing device for a laser rangefinder. Background Art

[0002] As a precise measuring tool, infrared rangefinder has been widely used in various fields. Rangefinders can be divided into ultrasonic rangefinders, infrared rangefinders, and laser rangefinders. The infrared rangefinder currently refers to the laser infrared rangefinder, that is, the laser rangefinder. The infrared rangefinder is an instrument that uses modulated infrared light for precise distance measurement.

[0003] During the production process of the laser rangefinder, the laser emitting objective lens and the laser receiving objective lens need to be installed with the rangefinder body so that the emitted infrared light source is perpendicular to the objective lens. However, there may be deviations between the two objective lenses during the installation process. Therefore, after the rangefinder is produced, the installation accuracy of the objective lens needs to be tested to ensure that it is installed correctly. The existing detection method is generally performed through manual observation, and its detection accuracy is low, which affects the final configuration of the product.

[0004] Therefore, a new technical solution is urgently needed to solve the above technical problems. Summary of the invention

[0005] In view of the shortcomings of the prior art, an object of the present invention is to provide an objective lens alignment test device for a laser rangefinder.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions: an objective lens alignment test device for a laser rangefinder, comprising a base, four vertically arranged fixing rods are fixedly connected to the base, a test seat is arranged on the top of the fixing rods, a circular through groove is opened on the surface of the test seat, a rotating table is rotatably connected in the through groove, a first through hole is opened at the axis of the rotating table, a second through hole is opened on one side of the rotating table located at the first positioning hole, a positioning edge is arranged on the peripheral side of the rotating table located at the first through hole and the second through hole, a half-reflecting half-mirror is arranged at a 45-degree angle to the horizontal plane on the workbench located below the test seat, and an image receiving component is also arranged on the workbench.

[0007] By adopting the above technical solution, when testing the rangefinder, the rangefinder is placed on a test seat, an objective lens equipped with a transmitting module is placed at a circular positioning edge, and another objective lens equipped with a receiving module is placed at another positioning edge, and an infrared light source is emitted vertically downward above the two objective lenses, and the light source is refracted to the image receiving component through a semi-reflective and semi-mirror lens, and the installation accuracy of the objective lens is detected by rotating the rotating table and observing the image formed on the image receiving component.

[0008] The present invention is further configured as follows: the test seat is rotatably connected to a gear on one side of the rotating table, a gear ring meshing with the gear is provided on the circumferential side wall of the rotating table, and a first motor for driving the gear is also included.

[0009] The present invention is further configured as follows: the image receiving component includes a connecting plate arranged on the surface of the base, a camera lens is arranged on the connecting plate, and also includes a display screen for displaying the image received by the camera lens. A driving component for driving the connecting plate is also arranged on the base.

[0010] The present invention is further configured as follows: a sliding groove is provided on the surface of the base, a sliding block slidably connected to the sliding groove is provided at the bottom of the connecting plate, and the driving assembly includes a driving rod rotatably connected to the sliding groove, and the driving rod passes through and is threadedly connected to the second motor of the sliding block.

[0011] The present invention is further configured as follows: sliders are slidably connected to both sides of the two positioning edges of the rotating table, a limiting groove for the sliding block to be slidably connected is provided on the surface of the rotating table, a first spring is provided between the outer wall end of the limiting groove and the sliding block, and a positioning block is provided on the top of the sliding block.

[0012] The present invention is further configured such that: the positioning block is arranged in an inclined surface toward the top of the side wall of the positioning edge.

[0013] The present invention is further configured as follows: a halogen lamp is arranged on the base below the semi-reflective and semi-mirror lens.

[0014] The present invention is further configured as follows: an annular groove is formed along the inner circumferential wall of the through slot; a connecting rod is provided at the bottom of the rotating platform; rollers rolling inside the connecting rod are provided at both ends of the connecting rod.

[0015] The present invention is further configured as follows: the connecting rod includes a main rod, the main rod is provided with two limiting grooves running through both ends thereof, a secondary rod is slidably connected in the limiting groove, a second spring is arranged between the secondary rod and the end of the limiting groove, and the roller is arranged at the end of the secondary rod.

[0016] The invention has the following beneficial effects: when testing a rangefinder, the rangefinder is placed on a test seat, an objective lens equipped with a transmitting module is placed at a circular positioning edge, another objective lens equipped with a receiving module is placed at another positioning edge, and an infrared light source is emitted vertically downward above the two objective lenses, the light source is refracted to an image receiving component through a semi-reflective and semi-mirror lens, and the rotating table is rotated and an image formed on the image receiving component is observed, so as to detect the accuracy of the installation of the objective lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the three-dimensional structure of this embodiment;

[0018] Figure 2 is a schematic diagram of the three-dimensional structure of the test socket of this embodiment;

[0019] Figure 3 Schematic diagram of the cross-sectional structure of the test socket of this embodiment.

[0020] Description of the drawings: 1. Base; 2. Fixed rod; 3. Test seat; 4. Turntable; 5. First through hole; 6. Second through hole; 7. Positioning edge; 8. Semi-reflective and semi-mirror lens; 9. Image receiving component; 10. Gear; 11. Gear ring; 12. Connecting plate; 13. Camera lens; 14. Sliding groove; 15. Sliding block; 16. Driving rod; 17. Second motor; 18. Sliding block; 19. Sliding groove; 20. First spring; 21. Positioning block; 22. Halogen lamp; 23. Annular groove; 24. Connecting rod; 25. Roller; 26. Main rod; 27. Limiting groove; 28. Auxiliary rod; 29. ​​Second spring; 30. Through hole. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0022] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] As shown in the figure, an objective lens alignment test device for a laser rangefinder comprises a base 1, four vertically arranged fixing rods 2 are fixedly connected to the base 1, a test seat 3 is arranged on the top of the fixing rod 2, a circular through groove is provided on the surface of the test seat 3, a rotating table 4 is rotatably connected in the through groove, a first through hole 5 is provided at the axis of the rotating table 4, a second through hole 6 is also provided on one side of the first positioning hole of the rotating table 4, a positioning edge 7 is provided on the peripheral side of the first through hole 5 and the second through hole 6 of the rotating table 4, a half-reflecting half-mirror 8 is provided on the workbench below the test seat 3 at an angle of 45 degrees to the horizontal plane, and an image receiving component 9 is also provided on the workbench.

[0024] When testing the rangefinder, the rangefinder is placed on the test seat 3, the objective lens equipped with the transmitting module is placed at the circular positioning edge 7, and the other objective lens equipped with the receiving module is placed at the other positioning edge 7, and an infrared light source is emitted vertically downward above the two objective lenses. The light source is refracted to the image receiving component through the semi-reflective and semi-mirror 8. By rotating the rotating table 4 and observing the image formed on the image receiving component 9, the horizontality of the objective lens installation can be detected.

[0025] The test seat 3 is located on one side of the rotating table 4 and is rotatably connected to a gear 10. The circumferential side wall of the rotating table 4 is provided with a gear ring 11 meshing with the gear 10. It also includes a first motor (not shown in the figure) for driving the gear 10. When performing the test, the rotating table 4 is driven to rotate by the first motor to ensure the smoothness of the rotation of the rotating table 4, so as to improve the accuracy of the final detection result.

[0026] The image receiving component 9 includes a connecting plate 12 arranged on the surface of the base 1, a camera lens 13 is arranged on the connecting plate 12, and also includes a display screen (not shown in the figure) for displaying the image received by the camera lens 13. The emitted light source is projected to the camera lens 13 through the semi-reflective and semi-mirror 8. The image received by the camera lens 13 is displayed on the display screen, and the path of movement of the light source is displayed on the display screen. A driving component for driving the connecting plate 12 is also arranged on the base 1 of the camera lens 13. During detection, the connecting plate 12 and the camera lens 13 are driven by the driving component to slide along the base 1, and the test is performed again at different positions. By observing the pattern displayed on the display screen after each test, the accuracy of the final test result is further improved.

[0027] A sliding groove 14 is provided on the surface of the base 1, and a sliding block 15 slidably connected to the sliding groove 14 is provided at the bottom of the connecting plate 12. The driving assembly includes a driving rod 16 rotatably connected to the sliding groove 14, and the driving rod 16 is passed through and threadedly connected to the sliding block 15. A second motor 17 for driving the driving rod 16 to rotate is provided at one end of the base 1. The driving rod 16 is driven to rotate by the second motor 17 to drive the sliding block 15 and the connecting plate 12 to slide along the sliding groove.

[0028] The rotating table 4 is located on both sides of the two positioning edges 7 and is slidably connected with sliders 18. The surface of the rotating table 4 is provided with a slide groove 19 for the slider 18 to be slidably connected. A first spring 20 is arranged between the outer wall end of the slide groove 19 and the slider 18. A positioning block 21 is arranged on the top of the slider 18. Before testing, the rangefinder is placed on the surface of the rotating table 4 so that the outer edge of the end of the objective lens is sleeved on the positioning edge 7. The positioning block 21 is arranged with an inclined surface toward the top of the side wall of the positioning edge 7. Under the action of the inclined surface, the slider 18 is pushed to move toward both sides. After installation, under the action of the elastic force of the first spring 20, the outer edge of the end of the objective lens of the rangefinder is pressed tightly to position the rangefinder, so as to improve the final test accuracy.

[0029] The base 1 is located below the semi-reflective mirror 8 and is provided with a halogen lamp 22 to provide a light source for the image structure module so that the image received by the camera lens 13 can be clearly observed.

[0030] An annular groove 23 is provided along the inner wall of the circumference of the through groove, a connecting rod 24 is provided at the bottom of the rotating table 4, a through hole 30 is provided in the middle of the connecting rod 24 for the light source to pass through, rollers 25 rolling in the connecting rod 24 are provided at both ends of the connecting rod 24, the connecting rod 24 includes a main rod 26, the main rod is provided with two limiting grooves 27 running through both ends, a sub-rod 28 is slidably connected in the limiting groove 27, a second spring 29 is provided between the end of the sub-rod 28 and the end of the limiting groove 27, the roller 25 is provided at the end of the sub-rod 28, and under the elastic force of the second spring 29, the roller 25 abuts against the inner wall of the annular groove 23 to ensure the stability of the rotating table 4 when rotating.

[0031] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An objective lens alignment test device for a laser rangefinder, characterized in that: It comprises a base, four vertically arranged fixing rods are fixedly connected to the base, a test seat is arranged on the top of the fixing rods, a circular through groove is provided on the surface of the test seat, a rotating table is rotatably connected in the through groove, a first through hole is provided at the axis of the rotating table, a second through hole is also provided on the side of the rotating table located at the first positioning hole, a positioning edge is provided on the peripheral side of the rotating table located at the first through hole and the second through hole, a half-reflecting half-mirror is arranged at a 45-degree angle to the horizontal plane on the base located below the test seat, and an image receiving component is also provided on the base; The test seat is located on one side of the rotating table and is rotatably connected to a gear. The circumferential side wall of the rotating table is provided with a gear ring meshed with the gear, and also includes a first motor for driving the gear; When testing the rangefinder, the rangefinder is placed on the test seat, the objective lens equipped with the transmitting module is placed at the circular positioning edge, and the other objective lens equipped with the receiving module is placed at the other positioning edge, and an infrared light source is emitted vertically downward above the two objective lenses. The light source is refracted to the image receiving component through a semi-reflective and semi-mirror lens. By rotating the rotating table and observing the image formed on the image receiving component, the horizontality of the objective lens installation can be detected.

2. The objective lens alignment test device for a laser rangefinder according to claim 1, characterized in that: The image receiving component includes a connecting plate arranged on the surface of the base, a camera lens is arranged on the connecting plate, and also includes a display screen for displaying the image received by the camera lens. A driving component for driving the connecting plate is also arranged on the base.

3. The objective lens alignment test device for a laser rangefinder according to claim 2, characterized in that: A sliding groove is provided on the surface of the base, a sliding block slidably connected to the sliding groove is provided at the bottom of the connecting plate, the driving assembly includes a driving rod rotatably connected to the sliding groove, the driving rod is passed through and threadedly connected to the sliding block, and a second motor for driving the driving rod to rotate is provided at one end of the base.

4. The objective lens alignment test device for a laser rangefinder according to claim 3, characterized in that: The rotating table is slidably connected with sliders on both sides of the two positioning edges, and a limiting groove for the sliding block to be slidably connected is opened on the surface of the rotating table. A first spring is arranged between the outer wall end of the limiting groove and the sliding block, and a positioning block is arranged on the top of the sliding block.

5. The objective lens alignment test device for a laser rangefinder according to claim 4, characterized in that: The positioning block is arranged in an inclined surface toward the top of the side wall of the positioning edge.

6. The objective lens alignment test device for a laser rangefinder according to claim 1, characterized in that: The base is located below the semi-reflective and semi-mirror lens and is provided with a halogen lamp.

7. The objective lens alignment test device for a laser rangefinder according to claim 1, characterized in that: The through slot is provided with an annular groove along its circumferential inner wall, a connecting rod is provided at the bottom of the rotating platform, and rollers rolling inside the connecting rod are provided at both ends of the connecting rod.

8. The objective lens alignment test device for a laser rangefinder according to claim 7, characterized in that: The connecting rod includes a main rod, the main rod is provided with two limiting grooves running through both ends thereof, a secondary rod is slidably connected in the limiting groove, a second spring is arranged between the secondary rod and the end of the limiting groove, and the roller is arranged at the end of the secondary rod.

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