Large-aperture laser lens detection device

Abstract

The utility model relates to the technical field of lens detection, and discloses a large-aperture laser lens detection device which comprises a supporting table, a projection screen is installed on the top of the supporting table, and a connecting plate making contact with the top of the projection screen is fixedly connected to the top of the supporting table. A supporting column located in the connecting plate is fixedly connected to the top of the supporting table, a light source is installed at the top of the supporting column, a resolution testing plate located on the right side of the supporting column is installed at the top of the supporting table, and a fixing assembly located on the right side of the resolution testing plate is fixedly connected to the top of the supporting table; and a connecting block is mounted at the bottom of the connecting plate. The large-aperture laser lens detection device has the advantages that shading can be adjusted according to indoor brightness, so that the large-aperture laser lens detection device can adapt to visual judgment of a detector, resolution can be better detected, and adjustment and fixation can be performed according to lenses of different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of lens detection, in particular to a large-aperture laser lens detection device. Background Art

[0002] The projection lens is an important part of the projector, and the resolution of the projection lens directly affects the image quality of the entire projector. Therefore, during the production process of the projector, the projection lens needs to be screened for resolution. At present, when testing the resolution of the projection lens in the industry, optical glass engraved with a resolution test pattern, namely a resolution test plate, is generally used to test the resolution of the projection lens.

[0003] Existing large-aperture laser lens detection devices usually do not have light shielding when detecting laser lenses, or the light shielding cannot be adjusted according to the brightness of the room, which affects the visual judgment of the detector and may even damage the detector's eyesight in the long run. In addition, it can only detect lenses of fixed size. Therefore, a large-aperture laser lens detection device is proposed to solve the above-mentioned problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a large-aperture laser lens detection device, which has the advantages of being able to adjust the shading according to the brightness in the room so that it can adapt to the visual judgment of the detector and better detect the resolution, and can be adjusted and fixed according to lenses of different sizes. It solves the problem that there is usually no shading when detecting laser lenses or the shading cannot be adjusted according to the brightness in the room, which affects the visual judgment of the detector and may even damage the detector's eyesight in the long run, and only lenses of fixed sizes can be detected.

[0006] (II) Technical solution

[0007] The utility model solves the above-mentioned technical problems with a technical solution as follows: A large-aperture laser lens detection device comprises a support platform, a projection screen is installed on the top of the support platform, a connecting plate in contact with the top of the projection screen is fixedly connected to the top of the support platform, a support column located inside the connecting plate is fixedly connected to the top of the support platform, a light source is installed on the top of the support column, a resolution inspection plate located on the right side of the support column is installed on the top of the support platform, a fixing component located on the right side of the resolution inspection plate is fixedly connected to the top of the support platform, a connecting block is installed on the bottom of the connecting plate, a same rotating column is rotatably connected between the connecting block and the connecting plate, a shading plate is installed on the outer side of the rotating column, two symmetrically distributed gears are arranged on the outer side of the rotating column, two symmetrically distributed telescopic rods are installed on the outer side of the connecting plate, and the output ends of the two telescopic rods are fixedly connected with racks meshing with the two gears.

[0008] The beneficial effects of the utility model are:

[0009] The large-aperture laser lens detection device has the advantages of being able to adjust the shading according to the brightness of the room, so that it can adapt to the visual judgment of the detector, better detect the resolution, and can be adjusted and fixed according to lenses of different sizes.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the fixing assembly includes a mounting frame fixedly connected to the support platform, a motor is installed inside the mounting frame, an output end of the motor is fixedly connected to a first threaded rod extending to the upper side of the mounting frame, an outer side of the first threaded rod is threadedly connected to a support frame, an outer side of the support frame is slidably connected to the mounting frame, and an inner side of the support frame is threadedly connected to two second threaded rods symmetrically distributed.

[0012] The beneficial effect of adopting the above-mentioned further scheme is that it makes the height adjustment of the lens fixation more convenient, so that it can better adapt to the height of the lens to the resolution inspection board, so that it can be completely projected onto the projection screen, which is convenient for the inspector to detect, and can be adjusted according to laser lenses of different sizes so that they can all be fixed.

[0013] Furthermore, two symmetrically distributed fixing plates are slidably connected inside the mounting frame, and the relative outer sides of the two fixing plates are fixedly connected to the two second threaded rods respectively, and the relative outer sides of the two second threaded rods are both installed with knobs.

[0014] The beneficial effect of adopting the above further solution is that it is easy to rotate the second threaded rod so that the second threaded rod can be fixed according to laser lenses of different sizes, thereby increasing the utilization rate of the device and preventing the laser lens from shifting during the detection process and affecting the detection results.

[0015] Furthermore, two symmetrically distributed sliding columns are fixedly connected inside the support frame, and outer sides of the two sliding columns are slidably connected to the two fixing plates.

[0016] The beneficial effect of adopting the above further solution is that the two fixing plates are kept sliding synchronously, so that the two fixing plates can approach or move away from each other at the same time, which is conducive to the same fixing force on the outer side of the laser lens.

[0017] Furthermore, the connecting plate is L-shaped, the mounting frame is U-shaped, grooves are provided on the opposite inner sides of the two fixing plates, and rubber pads are provided inside the grooves.

[0018] The beneficial effect of adopting the above further solution is that it makes it easier for the fixing plate to fix the laser lens, and the clamping force of the fixing plate is buffered to prevent it from damaging the outer side of the laser lens.

[0019] Furthermore, two symmetrically distributed support plates are fixedly connected to the outer side of the projection screen, and both of the two support plates are fixedly connected to the support platform.

[0020] The beneficial effect of adopting the above further solution is that the projection screen is reinforced to prevent the projection screen from shifting or shaking during use, which would affect the result of pattern projection and cause deviation in the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a frontal perspective view of the structure of the utility model;

[0022] Figure 2 This is a rear perspective view of the structure of the utility model;

[0023] Figure 3 This is an enlarged view of the structure A of the utility model;

[0024] Figure 4 It is a side sectional view of the structure of the utility model;

[0025] Figure 5 It is a front view of the structure of the utility model.

[0026] In the figure: 1. support platform; 2. projection screen; 3. connecting plate; 4. support column; 5. light source; 6. resolution test board; 7. mounting bracket; 8. motor; 9. first threaded rod; 10. support bracket; 11. sliding column; 12. fixed plate; 13. second threaded rod; 14. knob; 15. shading plate; 16. support plate; 17. rotating column; 18. connecting block; 19. gear; 20. rack; 21. telescopic rod; 22. fixing component; 23. groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the embodiment, Figure 1-5 A large-aperture laser lens detection device is provided. The utility model includes a support platform 1, a projection screen 2 is installed on the top of the support platform 1, a connecting plate 3 in contact with the top of the projection screen 2 is fixedly connected to the top of the support platform 1, a support column 4 located inside the connecting plate 3 is fixedly connected to the top of the support platform 1, a light source 5 is installed on the top of the support column 4, a resolution inspection plate 6 located on the right side of the support column 4 is installed on the top of the support platform 1, a fixing component 22 located on the right side of the resolution inspection plate 6 is fixedly connected to the top of the support platform 1, a connecting block 18 is installed on the bottom of the connecting plate 3, the connecting block 18 and the connecting plate 3 are rotatably connected with the same rotating column 17, a shading plate 15 is installed on the outer side of the rotating column 17, two gears 19 symmetrically distributed are arranged on the outer side of the rotating column 17, two telescopic rods 21 symmetrically distributed are installed on the outer side of the connecting plate 3, and the output ends of the two telescopic rods 21 are fixedly connected with racks 20 meshing with the two gears 19.

[0029] The fixing assembly 22 includes a mounting frame 7 fixedly connected to the support platform 1, a motor 8 is installed inside the mounting frame 7, an output end of the motor 8 is fixedly connected to a first threaded rod 9 extending to the upper side of the mounting frame 7, an outer side of the first threaded rod 9 is threadedly connected to a support frame 10, an outer side of the support frame 10 is slidably connected to the mounting frame 7, and an inner side of the support frame 10 is threadedly connected to two second threaded rods 13 that are symmetrically distributed.

[0030] Place the laser lens between the two second threaded rods 13, rotate the two second threaded rods 13, and move the two second threaded rods 13 closer to each other to fix the outer side of the laser lens. Start the motor 8, and the motor 8 drives the first threaded rod 9 to rotate. The first threaded rod 9 drives the support frame 10 to move up and down. The support frame 10 drives the internal laser lens to move up and down to adjust its height.

[0031] Two symmetrically distributed fixing plates 12 are slidably connected inside the mounting frame 7 . The opposite outer sides of the two fixing plates 12 are fixedly connected to two second threaded rods 13 . The opposite outer sides of the two second threaded rods 13 are respectively installed with knobs 14 .

[0032] The knob 14 is turned, and the knob 14 drives the two second threaded rods 13 to rotate. The two second threaded rods 13 drive the two fixing plates 12 to approach each other, so that the fixing plates 12 fix the laser lens located inside thereof.

[0033] Two symmetrically distributed sliding columns 11 are fixedly connected inside the support frame 10 , and the outer sides of the two sliding columns 11 are slidably connected to the two fixing plates 12 .

[0034] The connecting plate 3 is L-shaped, the mounting frame 7 is U-shaped, and grooves 23 are provided on the opposite inner sides of the two fixing plates 12 . Rubber pads are provided inside the grooves 23 .

[0035] Place the laser lens on the groove 23 of the two fixing plates 12, turn the knob 14, the knob 14 drives the two second threaded rods 13 to rotate, and the two second threaded rods 13 drive the two fixing plates 12 to approach each other and make the groove 23 engage with the outer side of the lens.

[0036] Two symmetrically distributed support plates 16 are fixedly connected to the outer side of the projection screen 2 , and both support plates 16 are fixedly connected to the support platform 1 .

[0037] Working principle:

[0038] First, the telescopic rod 21 is started, the telescopic rod 21 drives the rack 20 to slide, the rack 20 drives the gear 19 to rotate, the gear 19 drives the rotating column 17 to rotate, and the rotating column 17 drives the sunshade 15 to rotate, so that the sunshade 15 can be adjusted according to the indoor light;

[0039] Then: place the laser lens between the two fixed plates 12, turn the knob 14, the knob 14 drives the two second threaded rods 13 to rotate, the two second threaded rods 13 drive the two fixed plates 12 to move closer to each other to fix the laser lens, start the motor 8, the motor 8 drives the first threaded rod 9 to rotate, the first threaded rod 9 adjusts the height of the upper laser lens, turn on the light source 5, and let the light source 5 pass through the resolution inspection plate 6 and the lens in turn, and project onto the projection screen 2.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-aperture laser lens detection device, comprising a support platform (1), characterized in that: A projection screen (2) is installed on the top of the support platform (1); a connecting plate (3) in contact with the top of the projection screen (2) is fixedly connected to the top of the support platform (1); a support column (4) located inside the connecting plate (3) is fixedly connected to the top of the support platform (1); a light source (5) is installed on the top of the support column (4); a resolution inspection plate (6) located on the right side of the support column (4) is installed on the top of the support platform (1); a fixing component (22) located on the right side of the resolution inspection plate (6) is fixedly connected to the top of the support platform (1); A connecting block (18) is installed at the bottom of the connecting plate (3); the connecting block (18) and the connecting plate (3) are rotatably connected to a same rotating column (17); a shading plate (15) is installed on the outer side of the rotating column (17); two symmetrically distributed gears (19) are arranged on the outer side of the rotating column (17); two symmetrically distributed telescopic rods (21) are installed on the outer side of the connecting plate (3); the output ends of the two telescopic rods (21) are fixedly connected to racks (20) meshing with the two gears (19).

2. A large-aperture laser lens detection device according to claim 1, characterized in that: The fixing assembly (22) comprises a mounting frame (7) fixedly connected to the support platform (1); a motor (8) is installed inside the mounting frame (7); an output end of the motor (8) is fixedly connected to a first threaded rod (9) extending to the upper side of the mounting frame (7); the outer side of the first threaded rod (9) is threadedly connected to a supporting frame (10); the outer side of the supporting frame (10) is slidably connected to the mounting frame (7); and the inner side of the supporting frame (10) is threadedly connected to two second threaded rods (13) that are symmetrically distributed.

3. A large-aperture laser lens detection device according to claim 2, characterized in that: Two symmetrically distributed fixing plates (12) are slidably connected inside the mounting frame (7), and the relative outer sides of the two fixing plates (12) are respectively fixedly connected to the two second threaded rods (13), and the relative outer sides of the two second threaded rods (13) are both equipped with knobs (14).

4. The large-aperture laser lens detection device according to claim 3, characterized in that: Two symmetrically distributed sliding columns (11) are fixedly connected inside the support frame (10), and the outer sides of the two sliding columns (11) are slidably connected to the two fixing plates (12).

5. The large-aperture laser lens detection device according to claim 3, characterized in that: The connecting plate (3) is L-shaped, the mounting frame (7) is U-shaped, and grooves (23) are provided on the opposite inner sides of the two fixing plates (12), and rubber pads are provided inside the grooves (23).

6. The large-aperture laser lens detection device according to claim 1, characterized in that: Two symmetrically distributed support plates (16) are fixedly connected to the outer side of the projection screen (2), and both of the two support plates (16) are fixedly connected to the support platform (1).

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