Testing device of adjustable diaphragm

Abstract

The utility model discloses a testing device of an adjustable diaphragm, which comprises a first shell and a conversion piece which are obliquely connected, the conversion piece is arranged in the first shell, the first shell is provided with a first incident port, a first reflecting port and an emergent port, a standard target is arranged outside the first shell at a position corresponding to the first reflecting port, and a testing target is arranged at a position corresponding to the emergent port of the first shell. A light conversion mechanism is arranged between the shell I and the test target, the light conversion mechanism is used for installing an adjustable diaphragm, a light beam enters the shell I through an incidence port I of the shell I and irradiates a conversion piece in the shell I, and then the light beam is reflected to a reflection port I of the shell I and is projected to an external standard target; the standard target generates a standard light spot and reflects a light beam to return to the first shell through the first reflection opening, the light beam is output through the emergent opening and then passes through the light conversion mechanism, the adjustable diaphragm is installed in the light conversion mechanism to change the light spot, finally the light spot is projected to the test target, and the performance of the adjustable diaphragm is evaluated by observing the size of the light spot between the standard target and the test target.

Description

Technical Field

[0001] This utility model belongs to the technical field of adjustable apertures, specifically an adjustable aperture testing device. Background Technology

[0002] An adjustable aperture is an optical element used to control the amount of light passing through an optical system or the diameter of a light beam. It typically consists of multiple movable metal blades, and the opening and closing of these blades is adjusted mechanically or electronically to change the aperture size. Adjustable apertures are widely used in optical instruments to adjust light intensity, resolution, depth of field, or beam characteristics.

[0003] After manufacturing, existing adjustable apertures are usually directly installed into optical instruments for testing. During the test, the observer can only see the effect of the adjusted beam. However, this method makes it difficult to directly compare the adjusted beam with the state before adjustment. Without a clear reference, it is difficult to accurately evaluate the performance of the aperture. Utility Model Content

[0004] The purpose of this invention is to provide a test device with an adjustable aperture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An adjustable aperture testing device includes a housing and a conversion component. The conversion component is obliquely connected to the housing and is located inside the housing. The housing has an entrance port, a reflection port, and an exit port. A standard target is disposed on the outside of the housing corresponding to the reflection port. The surface of the conversion component faces the standard target. A test target is disposed on the housing corresponding to the exit port. A light-converting mechanism is disposed between the housing and the test target. The light-converting mechanism is used to install the adjustable aperture, and the adjustable aperture is used to adjust the light spot.

[0007] In a further technical solution, the light-converting mechanism includes a housing two, which includes an inlet two and a reflection port two. The housing two is movably connected to the housing one. The inlet two of the housing two corresponds to the outlet of the housing one. The test target is located at the position of the housing two corresponding to the reflection port two. A reflector two is provided inside the housing two. A closed space for installing an adjustable aperture is provided between the housing one and the housing two.

[0008] In a further technical solution, the light-converting mechanism further includes a light-transmitting tube one and a light-transmitting tube two. The light-transmitting tube one is connected to the housing one and is connected to the emission port. The light-transmitting tube two is bolted to the housing two and is connected to the emission port two. One end of the adjustable aperture is connected to the light-transmitting tube one, and the other end of the adjustable aperture is connected to the light-transmitting tube two.

[0009] In a further technical solution, the adjustable aperture includes a cylindrical frame, with a second circular groove and a first circular groove at both the upper and lower ends of the cylindrical frame. A flange extends outward from the upper end of the first light-transmitting tube, and the flange is bolted to the first circular groove. A flange extends outward from the lower end of the second light-transmitting tube, and the flange is bolted to the second circular groove.

[0010] In a further technical solution, the adjustable aperture also includes an aperture body, the cylindrical frame has a clearance hole, the drive rod of the aperture body passes through the clearance hole, the cylindrical frame is provided with a drive push rod and a drive groove, the drive push rod is slidably connected to the drive groove, and the drive push rod is sleeved on the drive rod of the aperture body.

[0011] In a further technical solution, a reflector and a convex lens are provided inside the housing. The reflector and the convex lens are both fixedly connected to the housing. The light path from the entrance port through the reflector, the convex lens, and the conversion element to the standard target forms a first light path. The light path from the standard target to the exit port forms a second light path. The first light path and the second light path are eccentrically arranged.

[0012] In a further technical solution, a convex lens and a slot are provided inside the housing, and the convex lens and the slot are engaged.

[0013] The beneficial effects of this utility model are:

[0014] The laser beam of this invention first enters the housing through the inlet port, irradiates the conversion component inside the housing, and then reflects the laser beam to the reflection port, which then projects it onto an external standard target. The standard target generates a standard spot and reflects the laser beam back to the housing through the reflection port, outputs it through the outlet, and then passes through a beam conversion mechanism. In this embodiment, an adjustable aperture is installed in the beam conversion mechanism to change the spot size. Finally, the beam is projected onto a test target. By observing the size of the spot between the standard target and the test target, the performance of the adjustable aperture can be evaluated more efficiently.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] Figure 1 : Front view of this utility model.

[0017] Figure 2 : Overall structural diagram of this utility model.

[0018] Figure 3 : Cross-sectional view of this utility model.

[0019] Figure 4 The present utility model Figure 3 Enlarged view of part A.

[0020] Figure 5 Side view of this utility model.

[0021] Figure 6 : Schematic diagram of the optical path of this utility model.

[0022] Reference numerals in the attached diagram: 1. Laser source; 2. Housing 1; 3. Conversion component; 4. Inlet 1; 5. Reflection port 1; 6. Outlet; 7. Standard target; 8. Test target; 9. Reflector 1; 10. Convex lens 1; 11. First optical path; 12. Second optical path; 13. Housing 2; 14. Inlet 2; 15. Reflection port 2; 16. Reflector 2; 17. Convex lens 2; 18. Light transmission tube 1; 181. Flange 1; 19. Light transmission tube 2; 192. Flange 2; 20. Adjustable aperture; 201. Cylindrical frame; 202. Circular groove 2; 203. Circular groove 1; 204. Aperture body; 2041. Drive rod; 22. Drive push rod; 23. Drive slot; Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Please refer to Figure 1-6 ;

[0025] An adjustable aperture testing device includes a housing 2 and a conversion component 3. The conversion component 3 is obliquely connected to the housing 2 and is located inside the housing 2. The housing 2 has an entrance port 4, a reflection port 5, and an exit port 6. A standard target 7 is arranged outside the housing 2 at a position corresponding to the reflection port 5. The surface of the conversion component 3 faces the standard target 7. A test target 8 is arranged in the housing 2 at a position corresponding to the exit port 6. A light-converting mechanism is arranged between the housing 2 and the test target 8. The light-converting mechanism is used to install an adjustable aperture 20, and the adjustable aperture 20 is used to adjust the light spot.

[0026] Assuming a laser source 1 is provided at the entrance of housing 2, the laser source 1 emits a laser beam. The laser beam first enters housing 2 through entrance 4, irradiates the conversion element 3 inside housing 2, and then reflects the laser beam to the reflection port 5 of housing 2, and projects it onto the external standard target 7. The standard target 7 generates a standard light spot and reflects the laser beam back to housing 2 through the reflection port 5, and outputs it through the exit port 6. Then, it passes through the light conversion mechanism. In this embodiment, an adjustable aperture is installed in the light conversion mechanism to change the light spot. Finally, it is projected onto the test target 8. By observing the size of the light spot between the standard target 7 and the test target 8, the performance of the adjustable aperture can be evaluated more efficiently.

[0027] Furthermore, a reflector 9 and a convex lens 10 are provided inside the housing 2. The reflector 9 and the convex lens 10 are fixedly connected to the housing 2. The light path from the inlet passes through the reflector 9, the convex lens 10 and the conversion element 3 to the standard target 7 to form the first light path 11. The light path from the standard target 7 to the outlet 6 forms the second light path 12. The first light path 11 and the second light path 12 are set off-center.

[0028] Specifically, the laser beam enters the housing 2 through the entrance port 4, passes through the first optical path 11 in sequence through the reflector 9 and the convex lens 10, and reaches the tilted conversion element 3. The conversion element 3 reflects the laser beam to the reflection port 5 of the housing 2 and projects it onto the external standard target 7. The standard target 7 performs primary modulation on the beam to generate an intermediate optical field. The modulated laser beam returns to the housing 2 along the second optical path 12, is output through the exit port 6, and is projected onto the test target 8 through the beam conversion mechanism. The first optical path 11 and the second optical path 12 are eccentrically set to avoid beam overlap interference, reduce stray light, and improve optical path efficiency.

[0029] In this embodiment, the light-converting mechanism includes a second housing 13, which includes an inlet 14 and a reflection port 15. The second housing 13 is movably connected to the first housing 2. The inlet 14 of the second housing 13 corresponds to the outlet 6 of the first housing 2. The test target 8 is located at the position of the reflection port 15 of the second housing 13. A second reflector 16 is provided inside the second housing 13. A closed space for installing an adjustable aperture is provided between the first housing and the second housing. Furthermore, a second convex lens 17 and a slot are provided inside the second housing 13, and the second convex lens 17 is engaged with the slot.

[0030] Specifically, after the laser beam is output from the outlet 6 of housing 12, it enters housing 23 of the light conversion mechanism and enters housing 23 through the inlet 24 corresponding to the outlet 6. The laser beam first passes through mirror 26, then illuminates convex lens 27, and finally is projected onto test target 8 through reflection port 25 of housing 23. Test target 8 outputs the final light spot. Convex lens 27 and mirror 26 are integrated inside housing 23. The convex lens 217 shapes the beam and the mirror 216 adjusts the beam direction to ensure that the light field emitted from housing 12 is accurately projected onto test target 8. Test target 8 uses convex lens 217 to optimize the beam.

[0031] Furthermore, the light-converting mechanism also includes a light-transmitting tube 18 and a light-transmitting tube 29. The light-transmitting tube 18 is connected to the housing 12 and is connected to the emission port 6. The light-transmitting tube 29 is bolted to the housing 23 and is connected to the emission port 24. One end of the adjustable aperture is connected to the light-transmitting tube 1, and the other end of the adjustable aperture is connected to the light-transmitting tube 2.

[0032] After the laser beam is output from the outlet 6 of housing 12, it enters the light transmission tube 18 of the light conversion mechanism. After passing through the light transmission tube 18, the laser beam passes through the adjustable aperture 20 to adjust the spot size, and then enters the light transmission tube 29. It then enters the housing 23 through the inlet 24 of housing 23. The adjustable aperture 20 precisely controls the spot size and optimizes the characteristics of the laser beam entering housing 23. Combined with the focusing of the convex lens 27, it ensures that the test target 8 receives a high-quality final spot light field.

[0033] Furthermore, the adjustable aperture 20 includes a cylindrical frame 201, with a second circular groove 202 and a first circular groove 203 at the upper and lower ends of the cylindrical frame 201. A first flange 181 extends outward from the upper end of the light-transmitting tube 18, and the first flange 181 is bolted to the first circular groove 203. A second flange 192 extends outward from the lower end of the light-transmitting tube 19, and the second flange 192 is bolted to the second circular groove 202. The adjustable aperture 20 also includes an aperture body 204. The cylindrical frame 201 has a clearance hole, and the drive rod 2041 of the aperture body 204 passes through the clearance hole. The cylindrical frame 201 is provided with a drive push rod 22 and a drive groove 23, which are slidably connected. The drive push rod 22 is sleeved on the drive rod 2041 of the aperture body 204.

[0034] After the laser beam is output from the outlet 6 of the housing 12, it enters the light tube 18 of the light conversion mechanism. After passing through the light tube 18, the beam enters the cylindrical frame 201 of the adjustable aperture 20. Inside the cylindrical frame 201, the beam passes through the aperture body 204. The aperture body 204 dynamically adjusts the size or shape of the light spot. The adjusted beam enters the light tube 29 and then enters the housing 23. The aperture body 204 of the adjustable aperture 20 precisely adjusts the aperture in the drive groove 23 through the drive rod 2041 and the drive push rod 22 to optimize the size and shape of the light spot and provide more reference data for the test target 8.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A test apparatus for an adjustable iris, characterized by, The device includes a housing (2) and a conversion component (3). The conversion component (3) is inclinedly connected to the housing (2) and is located inside the housing (2). The housing (2) has an inlet (4), a reflection port (5), and an outlet (6). A standard target (7) is set outside the housing (2) at a position corresponding to the reflection port (5). The surface of the conversion component (3) faces the standard target (7). A test target (8) is set at a position corresponding to the outlet (6) of the housing (2). A light-converting mechanism is set between the housing (2) and the test target (8). The light-converting mechanism is used to install an adjustable aperture, and the adjustable aperture is used to adjust the light spot.

2. A test device for an adjustable iris according to claim 1, wherein, The light-converting mechanism includes a second housing (13), which includes an inlet port (14) and a reflection port (15). The second housing (13) is movably connected to the first housing (2). The inlet port (14) of the second housing (13) corresponds to the outlet port (6) of the first housing (2). The test target (8) is located in the second housing (13) at the position corresponding to the reflection port (15). A second reflector (16) is provided inside the second housing (13). A closed space for installing an adjustable aperture is provided between the first housing (2) and the second housing (13).

3. A test device for an adjustable iris according to claim 2, wherein, The light-converting mechanism further includes a light-transmitting tube one (18) and a light-transmitting tube two (19). The light-transmitting tube one (18) is connected to the housing one (2) and is connected to the emission port (6). The light-transmitting tube two (19) is bolted to the housing two (13) and is connected to the emission port two (14). One end of the adjustable aperture is connected to the light-transmitting tube one (18), and the other end of the adjustable aperture is connected to the light-transmitting tube two (19).

4. A test device for an adjustable iris according to claim 3, wherein, The adjustable aperture includes a cylindrical frame (201), with a second circular groove (202) and a first circular groove (203) at the upper and lower ends of the cylindrical frame (201). A first flange (181) extends outward from the upper end of the first light-transmitting tube (18), and the first flange (181) is bolted to the first circular groove (203). A second flange (192) extends outward from the lower end of the second light-transmitting tube (19), and the second flange (192) is bolted to the second circular groove (202).

5. A test device for an adjustable iris according to claim 4, wherein, The adjustable aperture also includes an aperture body (204), the cylindrical frame (201) is provided with a clearance hole, the drive rod (2041) of the aperture body (204) passes through the clearance hole, the cylindrical frame (201) is provided with a drive push rod (22) and a drive groove (23), the drive push rod (22) is slidably connected to the drive groove (23), and the drive push rod (22) is sleeved on the drive rod (2041) of the aperture body (204).

6. The test apparatus for an adjustable iris of claim 1, wherein, The housing (2) is provided with a reflector (9) and a convex lens (10). The reflector (9) and the convex lens (10) are fixedly connected to the housing (2). The light path from the inlet to the standard target (7) through the reflector (9), the convex lens (10) and the conversion element (3) forms a first light path (11). The light path from the standard target (7) to the outlet (6) forms a second light path (12). The first light path (11) and the second light path (12) are eccentrically arranged.

7. The test apparatus for an adjustable iris of claim 2, wherein, The housing 2 (13) is provided with a convex lens 2 (17) and a slot, and the convex lens 2 (17) is engaged with the slot.

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