Ultra-short-focus thermal image temperature measurement lens assembling and debugging tool and use method thereof

Abstract

The invention discloses an ultra-short-focus thermal image temperature measurement lens assembling and debugging tool and a use method thereof. The ultra-short-focus thermal image temperature measurement lens assembling and debugging tool comprises a lens assembling frame, two semicircular limiting clamps, a debugging base and a multi-angle adjusting mechanism arranged on the debugging base. Wherein the two semicircular limiting clamps are arranged in the lens assembly frame and used for clamping and fixing a lens, a limiting area between the two semicircular limiting clamps can be adjusted according to the diameter of the lens, and the first fine pitching of the optical axis of the lens is achieved through the structure of the arc-shaped groove and the adjusting plate; the first angle adjusting mechanism and the second angle adjusting mechanism carry out horizontal rotation and front-back pitching on the whole lens and the camera, two-stage adjustment does not interfere with each other, the alignment precision of the optical axis of the ultra-short-focus thermal imaging lens and the target surface of the detector is remarkably improved, manual holding operation is not needed, and the precision in the debugging process is improved.

Description

Technical Field

[0001] This invention relates to an assembly and debugging fixture for an ultra-short focal length thermal imaging temperature measurement lens and its usage method. Background Technology

[0002] A temperature-measuring lens is essentially an optical component at the front end of an infrared thermal imager / point thermometer. It is responsible for focusing long-wave or mid-wave infrared radiation onto the detector. The lens itself cannot "measure temperature" and must use infrared-grade materials such as germanium, zinc selenide, and zinc sulfide, and perform anti-reflection coating on the target wavelength during the coating process.

[0003] Currently, after the temperature measuring lens is coated to enhance the anti-reflection effect on the target wavelength, it needs to be assembled and its effect at various angles needs to be tested. However, the current debugging fixtures cannot be adjusted at multiple angles, which reduces the alignment accuracy between the optical axis of the ultra-short focal length thermal imaging lens and the detector target surface. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides an assembly and debugging fixture for an ultra-short focal length thermal imaging lens and its usage method. Two semi-circular limiting clamps can be continuously and variably clamped within the limiting area through a fixing block and a first positioning bolt. The same fixture covers the entire series of ultra-short focal length thermal imaging lenses, eliminating the need to change clamps and saving time. The arc-shaped groove and adjustment plate structure achieve the initial fine pitch of the lens optical axis. The first angle adjustment mechanism and the second angle adjustment mechanism then perform horizontal rotation and forward and backward pitch of the lens and camera as a whole. The two-stage adjustment does not interfere with each other, significantly improving the alignment accuracy between the ultra-short focal length thermal imaging lens optical axis and the detector target surface. Moreover, no manual operation is required, improving the accuracy of the debugging process.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an assembly and debugging fixture for an ultra-short focal length thermal imaging temperature measurement lens, comprising: Lens assembly frame, two semi-circular limiting clamps, adjustment base, and multi-angle adjustment mechanism set on the adjustment base; The two semi-circular limiting clamps are disposed inside the lens assembly frame to clamp and fix the lens, and the limiting area between the two semi-circular limiting clamps can be adjusted according to the lens diameter. The surface of the lens assembly frame is provided with an arc-shaped groove, which is used to cooperate with the semi-circular limiting clamps to adjust the angle of the lens itself. The multi-angle adjustment mechanism includes a first angle adjustment mechanism and a second angle adjustment mechanism. The first angle adjustment mechanism is used to drive the lens assembly frame to rotate left and right, and the second angle adjustment mechanism is used to drive the lens assembly frame to rotate back and forth, thereby realizing the overall angle adjustment of the lens after it is connected to the camera body.

[0006] As a preferred embodiment of the present invention, both the top and the tail of the two semicircular limiting clamps are provided with fixing blocks extending outward, and the fixing blocks are provided with first positioning bolts for locking the two semicircular limiting clamps.

[0007] As a preferred embodiment of the present invention, the semicircular limiting clamp is provided with an adjustment plate on the side facing the lens assembly frame. The surface of the adjustment plate is provided with several through holes. The outer side of the lens assembly frame is provided with a second positioning bolt. The second positioning bolt passes through the arc groove and the through holes in sequence to lock the adjustment plate to the lens assembly frame.

[0008] As a preferred embodiment of the present invention, the first angle adjustment mechanism includes a first support seat disposed on one side of the debugging base, a fixed plate connected to the outside of the first support seat via a turntable, a first motor disposed on the outside of the fixed plate, a transmission belt sleeved on the power output end of the first motor, a first rotating shaft inserted into the fixed plate, and the end of the transmission belt away from the first motor sleeved on the first rotating shaft.

[0009] As a preferred embodiment of the present invention, the surface of the first support base is provided with a groove for the first rotating shaft to pass through. The first rotating shaft extends to the center of the lower surface of the debugging base and is connected to a first worm gear. A second rotating shaft is inserted into the center of the debugging base. The second rotating shaft extends to the bottom of the debugging base and is connected to a first worm wheel that is compatible with the worm gear.

[0010] As a preferred embodiment of the present invention, the end of the second rotating shaft away from the first worm gear is connected to a rotating seat, and the lens assembly frame is mounted on the surface of the rotating seat.

[0011] As a preferred embodiment of the present invention, the second angle adjustment mechanism includes a second motor disposed on the other side of the debugging base, a second worm gear connected to the power output end of the second motor, and a second worm wheel meshing on the outer side of the second worm gear.

[0012] As a preferred embodiment of the present invention, the second worm is mounted on the second support base via its shaft end. The second support base is mounted on the other side of the debugging base. A third rotating shaft is inserted into the debugging base. One end of the third rotating shaft is connected to the first support base, and the other end of the third rotating shaft extends to the outside of the second support base and is connected to the second worm.

[0013] As a preferred embodiment of the present invention, the lower surface of the debugging base is provided with a bearing seat for supporting the first rotating shaft.

[0014] A method for using an assembly and debugging fixture for an ultra-short focal length thermal imaging temperature measurement lens, the specific steps of which are as follows: S1. First, place the ultra-short focal length thermal imaging temperature measurement lens to be adjusted between the two semi-circular limiting clamps, and screw the first positioning bolt into the top and tail fixing blocks so that the two semi-circular limiting clamps move closer together until the lens is coaxially clamped, thus completing the adaptive locking in the diameter direction. S2. The second positioning bolt passes through the arc groove from the outside of the lens assembly frame and is inserted into the corresponding through hole. After the nut is tightened, the lens pitch angle is fixed, realizing the first fine adjustment of the lens angle itself. S3. Start the first motor, and through the self-locking transmission of the worm gear and worm, the rotating seat carries the lens assembly frame to achieve horizontal rotation, which is used for rapid switching and positioning of the left and right field of view. S4. Start the second motor, the second worm gear drives the second worm wheel and the third shaft to rotate, causing the adjustment base to tilt back and forth, thereby achieving overall angle adjustment of the lens and camera.

[0015] Compared with the prior art, the beneficial effects of this invention are as follows: the two semi-circular limiting clamps can be continuously and variably clamped within the limiting area through the fixing block and the first positioning bolt; the same tooling covers the entire series of ultra-short focal length thermal imaging lenses, eliminating the need to change clamps and saving time; the arc groove and adjustment plate structure realizes the initial fine pitch of the lens optical axis; the first angle adjustment mechanism and the second angle adjustment mechanism then perform horizontal rotation and forward and backward pitch of the lens and camera as a whole; the two-stage adjustment does not interfere with each other, significantly improving the alignment accuracy between the ultra-short focal length thermal imaging lens optical axis and the detector target surface, and eliminating the need for manual operation, thus improving the accuracy during the debugging process. Attached Figure Description

[0016] Figure 1 This is a first-view structural diagram of the entire invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective; Figure 3 This is a schematic diagram of the bearing housing structure of the present invention; Figure 4 This is a schematic diagram of the structure of the second worm gear of the present invention; Figure 5 This is a schematic diagram of the structure of the rotary seat of the present invention; Figure 6 This is a schematic diagram of the semicircular limiting clamp of the present invention.

[0017] The components include: 1. Lens assembly frame; 2. Semicircular limiting clamp; 3. Adjustment base; 4. Arc groove; 5. Fixing block; 6. First positioning bolt; 7. Adjusting plate; 8. Through hole; 9. Second positioning bolt; 10. First support seat; 11. Turntable; 12. Fixing plate; 13. First motor; 14. Transmission belt; 15. First rotating shaft; 16. Slide groove; 17. First worm gear; 18. Second rotating shaft; 19. First worm wheel; 20. Rotary seat; 21. Second motor; 22. Second worm gear; 23. Second worm wheel; 24. Second support seat; 25. Third rotating shaft; 26. Bearing seat. Detailed Implementation

[0018] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0019] Example: like Figure 1 - Figure 6 As shown, this embodiment proposes an assembly and debugging fixture for an ultra-short focal length thermal imaging temperature measurement lens, including: The system comprises a lens assembly frame 1, two semi-circular limiting clamps 2, an adjustment base 3, and a multi-angle adjustment mechanism mounted on the adjustment base 3. The two semi-circular limiting clamps 2 are located inside the lens assembly frame 1 and are used to clamp and fix the lens. The limiting area between the two semi-circular limiting clamps 2 can be adjusted according to the lens diameter. An arc-shaped groove 4 is formed on the surface of the lens assembly frame 1, which works in conjunction with the semi-circular limiting clamps 2 to adjust the angle of the lens itself. The multi-angle adjustment mechanism includes a first angle adjustment mechanism and a second angle adjustment mechanism. The first angle adjustment mechanism drives the lens assembly frame 1 to rotate left and right, and the second angle adjustment mechanism drives the lens assembly frame 1 to rotate back and forth, thereby achieving overall angle adjustment of the lens after it is connected to the camera body. The two semi-circular limiting clamps 2 can be continuously and variably clamped within the limiting area by the fixing block 5 and the first positioning bolt 6. The same fixture covers the entire series of ultra-short focal length thermal imaging lenses, eliminating the need to change the clamps and saving time. The arc groove 4 and the adjustment plate 7 structure realize the first fine pitch of the lens optical axis. The first angle adjustment mechanism and the second angle adjustment mechanism then perform horizontal rotation and forward and backward pitch of the lens and camera as a whole. The two-stage adjustment does not interfere with each other, which significantly improves the alignment accuracy between the optical axis of the ultra-short focal length thermal imaging lens and the detector target surface. Moreover, no manual operation is required, which improves the accuracy of the debugging process.

[0020] The two semicircular limiting clamps 2 each have a fixing block 5 extending outward from their top and bottom. The fixing block 5 is equipped with a first positioning bolt 6 for locking the two semicircular limiting clamps 2. The fixing block 5 and the semicircular limiting clamp 2 are integrally milled. The first positioning bolt 6 is a knurled hand-tightening bolt, which can be quickly tightened without tools. An adjusting plate 7 is provided on the side of the semicircular limiting clamp 2 facing the lens assembly frame 1. The adjusting plate 7 has several through holes 8 on its surface. A second positioning bolt 9 is provided on the outside of the lens assembly frame 1. The second positioning bolt 9 passes through the arc-shaped groove 4 and the through holes 8 in sequence, locking the adjusting plate 7 to the lens assembly frame 1. There are four sets of semicircular limiting clamps 2, two of which are located on the rear side of the lens assembly frame 1 and are installed via a fourth rotating shaft. As the two front semicircular limiting clamps 2 move within the arc-shaped groove 4, the adjustment angle changes. At this time, the two rear semicircular limiting clamps 2 rotate along with the fourth rotating shaft, achieving a coordinated action, thereby allowing adjustment of the lens body. The first angle adjustment mechanism includes a first support base 10 disposed on one side of the debugging base 3. A fixed plate 12 is connected to the outside of the first support base 10 via a turntable 11. A first motor 13 is disposed on the outside of the fixed plate 12. A transmission belt 14 is sleeved on the power output end of the first motor 13. A first rotating shaft 15 is inserted into the fixed plate 12. The end of the transmission belt 14 away from the first motor 13 is sleeved on the first rotating shaft 15. As the first motor 13 drives the transmission belt 14, the first rotating shaft 15 drives the first worm gear 17 to rotate. Through the engagement of the first worm gear 17 with the first worm wheel 19, the second rotating shaft 18 is driven to rotate, which in turn drives the rotating base 20 and the lens assembly frame 1 to rotate. When the camera is connected to the lens body in the semi-circular limiting clamp 2, the overall angle can be adjusted through the first angle adjustment mechanism. A stop is provided between the fixed plate 12 and the first support base 10 for positioning. The turntable 11 is a cross roller bearing structure, which can simultaneously bear radial and axial combined loads. The transmission belt 14 is a circular arc tooth synchronous belt. The first support base 10 has a groove 16 on its surface for the first rotating shaft 15 to pass through. The first rotating shaft 15 extends to the center of the lower surface of the adjustment base 3 and is connected to a first worm gear 17. A second rotating shaft 18 is centrally inserted into the adjustment base 3. The second rotating shaft 18 extends to the bottom of the adjustment base 3 and is connected to a first worm wheel 19 that matches the first worm gear 17. The groove 16 is arc-shaped. When the third rotating shaft 25 rotates, it will drive the adjustment base 3 to rotate back and forth. At this time, the first rotating shaft 15 can slide in the groove 16 so that it will not interfere with the rotation of the adjustment base 3. Furthermore, the turntable 11 prevents the first motor 13 from rotating with the adjustment base 3. The end of the second rotating shaft 18 away from the first worm wheel 19 is connected to a rotating base 20, and the lens assembly frame 1 is mounted on the surface of the rotating base 20.The second angle adjustment mechanism includes a second motor 21 located on the other side of the adjustment base 3. The power output end of the second motor 21 is connected to a second worm gear 22, and a second worm wheel 23 meshes with the outer side of the second worm gear 22. The second worm gear 22 is mounted on a second support base 24 via its shaft end. The second support base 24 is mounted on the other side of the adjustment base 3. A third rotating shaft 25 is inserted into the adjustment base 3. One end of the third rotating shaft 25 is connected to the first support base 10, and the other end extends to the outside of the second support base 24 and connects to the second worm gear 22. A bearing seat 26 for supporting the first rotating shaft 15 is provided on the lower surface of the adjustment base 3.

[0021] A method for using an assembly and debugging fixture for an ultra-short focal length thermal imaging temperature measurement lens, the specific steps of which are as follows: S1. First, place the ultra-short focal length thermal imaging temperature measurement lens to be debugged between the two semi-circular limiting clamps 2, and screw the first positioning bolt 6 into the top and tail fixing blocks 5 so that the two semi-circular limiting clamps 2 move closer together until the lens is coaxially clamped, thus completing the adaptive locking in the diameter direction. S2. The second positioning bolt 9 passes through the arc groove 4 from the outside of the lens assembly frame 1 and is inserted into the corresponding through hole 8. After the nut is tightened, the lens pitch angle is fixed, realizing the first fine adjustment of the lens angle itself. S3. Start the first motor 13. Through the self-locking transmission of the worm gear and worm, the rotating seat 20 carries the lens assembly frame 1 to achieve horizontal rotation, which is used for rapid switching and positioning of the left and right field of view. S4. Start the second motor 21. The second worm gear 22 drives the second worm wheel 23 and the third rotating shaft 25 to rotate, which drives the adjustment base 3 to tilt back and forth, thereby realizing the overall angle adjustment of the lens and camera.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tooling for assembling and debugging an ultra-short focal length thermal imaging temperature measurement lens, characterized in that: include: Lens assembly frame (1), two semi-circular limiting clamps (2), adjustment base (3), and a multi-angle adjustment mechanism set on the adjustment base (3); The two semicircular limiting clamps (2) are located inside the lens assembly frame (1) and are used to clamp and fix the lens. The limiting area between the two semicircular limiting clamps (2) can be adjusted according to the lens diameter. The surface of the lens assembly frame (1) is provided with an arc groove (4). The arc groove (4) is used to cooperate with the semicircular limiting clamps (2) to adjust the angle of the lens itself. The multi-angle adjustment mechanism includes a first angle adjustment mechanism and a second angle adjustment mechanism. The first angle adjustment mechanism is used to drive the lens assembly frame (1) to rotate left and right as a whole, and the second angle adjustment mechanism is used to drive the lens assembly frame (1) to rotate back and forth as a whole, thereby realizing the overall angle adjustment of the lens after it is connected to the camera body.

2. The assembly and debugging fixture for the ultra-short focal length thermal imaging temperature measurement lens according to claim 1, characterized in that: Both of the two semicircular limiting clamps (2) have fixing blocks (5) extending outward from the top and tail. The fixing blocks (5) are provided with first positioning bolts (6) for locking the two semicircular limiting clamps (2).

3. The assembly and debugging fixture for the ultra-short focal length thermal imaging temperature measurement lens according to claim 2, characterized in that: The semicircular limiting clamp (2) is provided with an adjustment plate (7) on the side facing the lens assembly frame (1). The surface of the adjustment plate (7) is provided with several through holes (8). The outside of the lens assembly frame (1) is provided with a second positioning bolt (9). The second positioning bolt (9) passes through the arc groove (4) and the through hole (8) in sequence to lock the adjustment plate (7) to the lens assembly frame (1).

4. The assembly and debugging fixture for the ultra-short focal length thermal imaging temperature measurement lens according to claim 3, characterized in that: The first angle adjustment mechanism includes a first support base (10) located on one side of the debugging base (3). A fixed plate (12) is connected to the outside of the first support base (10) via a turntable (11). A first motor (13) is located on the outside of the fixed plate (12). A transmission belt (14) is sleeved on the power output end of the first motor (13). A first rotating shaft (15) is inserted into the fixed plate (12). The end of the transmission belt (14) away from the first motor (13) is sleeved on the first rotating shaft (15).

5. The assembly and debugging fixture for the ultra-short focal length thermal imaging temperature measurement lens according to claim 4, characterized in that: The surface of the first support base (10) is provided with a groove (16) through which the first rotating shaft (15) passes. The first rotating shaft (15) extends to the center of the lower surface of the debugging base (3) and is connected to the first worm (17). The second rotating shaft (18) is inserted into the center of the debugging base (3). The second rotating shaft (18) extends to the bottom of the debugging base (3) and is connected to the first worm wheel (19) that is compatible with the worm.

6. The assembly and debugging fixture for the ultra-short focal length thermal imaging temperature measurement lens according to claim 5, characterized in that: The second rotating shaft (18) is connected to a rotating seat (20) at the end away from the first worm gear (19), and the lens assembly frame (1) is mounted on the surface of the rotating seat (20).

7. The assembly and debugging fixture for the ultra-short focal length thermal imaging temperature measurement lens according to claim 1, characterized in that: The second angle adjustment mechanism includes a second motor (21) located on the other side of the debugging base (3), the power output end of the second motor (21) is connected to a second worm (22), and a second worm wheel (23) meshes with the outer side of the second worm (22).

8. The assembly and debugging fixture for the ultra-short focal length thermal imaging temperature measurement lens according to claim 7, characterized in that: The second worm (22) is mounted on the second support (24) through its shaft end. The second support (24) is mounted on the other side of the debugging base (3). A third rotating shaft (25) is inserted into the debugging base (3). One end of the third rotating shaft (25) is connected to the first support (10), and the other end of the third rotating shaft (25) extends to the outside of the second support (24) and is connected to the second worm (22).

9. The assembly and debugging fixture for the ultra-short focal length thermal imaging temperature measurement lens according to claim 6, characterized in that: The lower surface of the debugging base (3) is provided with a bearing seat (26) for supporting the first rotating shaft (15).

10. A method for using the assembly and debugging fixture for an ultra-short focal length thermal imaging temperature measurement lens according to any one of claims 1-9, characterized in that: S1. First, place the ultra-short focal length thermal imaging temperature measurement lens to be debugged between the two semi-circular limiting clamps (2), and screw the first positioning bolt (6) into the top and tail fixing blocks (5) so that the two semi-circular limiting clamps (2) move closer together until the lens is coaxially clamped, thus completing the adaptive locking in the diameter direction. S2. The second positioning bolt (9) passes through the arc groove (4) from the outside of the lens assembly frame (1) and is inserted into the corresponding through hole (8). After the nut is tightened, the lens pitch angle is fixed, realizing the first fine adjustment of the lens angle itself. S3. Start the first motor (13), and through the worm gear and worm self-locking transmission, the rotating seat (20) carries the lens assembly frame (1) to achieve horizontal rotation, which is used for rapid switching and positioning of the left and right field of view. S4. Start the second motor (21), the second worm (22) drives the second worm wheel (23) and the third rotating shaft (25) to rotate, driving the adjustment base (3) to tilt back and forth, so as to realize the overall angle adjustment of the lens and camera.

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