A device for detecting a projection optical machine

Abstract

The utility model discloses a device for detecting projection light machine, include: base is equipped with the first installation area for connecting image acquisition device, and the second installation area for connecting the projection light machine of measuring, pressure block subassembly, at least including can support point rotation far away or close to the projection light machine of measuring, in initial state, the distance is formed between pressure block and the projection light machine of measuring, press down subassembly is used for to the pressure block and applies the pressure of pressing down, to make the pressure block rotate, and the projection light machine of measuring is held with the base cooperation. The utility model provides the auxiliary device for the defect detection of projection light machine of measuring, can effectively detect whether containing dust, uneven brightness etc. defects in the projection light machine of measuring through the projection of image acquisition device, the detection of the image of projection formation, convenient operation, in initial state, the distance is formed between press down subassembly and pressure block subassembly, and the distance is formed between pressure block subassembly and the projection light machine of measuring, and the projection light machine of measuring is convenient to dismount.

Description

Technical Field

[0001] This utility model belongs to the field of industrial visual inspection technology, and in particular relates to a device for inspecting projection optical engines. Background Technology

[0002] With the rapid development of the machine vision industry, the use of 3D cameras is becoming more and more widespread, and the use of projection optical engines is becoming more and more common. The required precision is getting higher and higher. At present, there is a lack of inspection for projection optical engines. For example, defects such as dust entering the projection optical engine or uneven brightness can have a great impact on the precision of 3D cameras. At present, it is impossible to inspect them with the naked eye. There is a lack of inspection devices and inspection procedures for 3D camera projector optical engines on the market. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a device for testing projection optical engines, which provides an auxiliary device for detecting defects in projection optical engines and is easy to assemble and disassemble.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a device for testing a projection optical engine, comprising:

[0005] The base has a first mounting area for connecting an image acquisition device and a second mounting area for connecting a projector under test.

[0006] The pressure block assembly includes at least a pressure block that can be rotated at a fulcrum to move away from or towards the projector optical engine under test, and in the initial state, a distance is formed between the pressure block and the projector optical engine under test.

[0007] The pressing component is used to apply downward pressure to the pressing block so that the pressing block rotates and engages with the base to clamp the projector optical engine under test.

[0008] Furthermore, the second end of the pressure block is located above the second mounting area, and the pressure block abuts against the elastic element, which is used to drive the second end of the pressure block to form a distance between it and the projector optical engine to be tested.

[0009] Furthermore, the pressure block assembly includes a slide rail and a transition plate slidably connected to the slide rail, the pressure block is rotatably connected to the transition plate, and the two ends of the elastic member abut against the bottom surface of the transition plate and the pressure block, respectively.

[0010] Furthermore, a limiting pin and a stroke groove are provided between the first end of the pressure block and the adapter plate, which work together to limit the rotation range of the pressure block.

[0011] Furthermore, the slide rail is provided with a limiting element to limit the translational travel of the adapter plate along the slide rail.

[0012] Furthermore, the first and second installation areas are positioned close to each other, and when the image acquisition device and the projector under test are installed, their working surfaces face the same direction.

[0013] Furthermore, the pressing assembly includes a lifting seat, a mounting seat connected to the lifting seat, a wrench rotatably connected to the mounting seat, a pressing member rotatably connected to the mounting seat, and an intermediate member rotatably connected to the pressing member and the wrench respectively. In the initial state, there is a gap between the pressing member and the pressure block. When an external force is applied to rotate the wrench, the pressing member rotates towards the pressure block, thus pressing down on the pressure block.

[0014] Furthermore, a buffer portion is formed at the position where the pressing member contacts the pressing block.

[0015] Furthermore, the pressing block includes a horizontal segment, a vertical segment, and an inclined bending segment located between the horizontal segment and the vertical segment.

[0016] Furthermore, the base is provided with a suspended component, and the pressure block assembly and the pressing assembly are located on the top surface of the suspended component, with a hollow space below the suspended component forming an accommodating space.

[0017] The beneficial effects of this utility model are: 1) It provides an auxiliary device for defect detection of the projector under test. By projecting the image through the image acquisition device and detecting the projected image through the projector under test, it can effectively detect whether the projector under test contains defects such as dust or uneven brightness. It is easy to operate; 2) In the initial state, a distance is formed between the pressing component and the pressure block component, and a distance is formed between the pressure block component and the projector under test, which facilitates the disassembly and assembly of the projector under test. After the projector under test is installed, the pressing component can be used to quickly press down the pressure block component, thereby realizing the disassembly and assembly of the pressure block component and the projector under test. The base provides a secure clamping grip for the image acquisition device. After turning the wrench of the pressing component, the pressure block can be automatically lifted upwards, facilitating the disassembly of the projector under test; 3) The slide rail facilitates the adjustment of the pressure block component's position to overcome processing deviations or to adapt to different projector under test; 4) The structural design of the pressing component allows it to remain in the state of pressing the pressure block component without continuously applying external force; 5) The base is equipped with a suspended component, which not only provides space for the installation of the circuit board but also allows the pressure block component to be raised upwards, facilitating its downward pressure on the projector under test from the top. Attached Figure Description

[0018] Figure 1 The stereoscopic image acquisition device and the projector under test assembled with this utility model are shown below. Figure 1 .

[0019] Figure 2 The stereoscopic image acquisition device and the projector under test assembled with this utility model are shown below. Figure 2 .

[0020] Figure 3 This is a perspective view of the present invention.

[0021] Figure 4 for Figure 3 Enlarged view of the structure at point A in the image.

[0022] Figure 5 This is a perspective view of the pressing block involved in this utility model.

[0023] Figure 6 This is a perspective view of the pressing block assembly involved in this utility model.

[0024] Figure 7 This is a perspective view of the pressing component involved in this utility model.

[0025] Figure 8 A partial cross-section of the present invention assembled with an image acquisition device and a projector optical engine under test. Figure 1 .

[0026] Figure 9 A partial cross-section of the present invention assembled with an image acquisition device and a projector optical engine under test. Figure 2 .

[0027] Figure 10 The first image of the display defect revealed that the projection optical engine had a defect where dust had entered.

[0028] Figure 11 The second image of the display defect revealed an uneven brightness defect in the projection optical engine.

[0029] Among them, 1-base, 11-first mounting area, 12-second mounting area, 121-positioning hole, 13-elevation component, 14-accommodation space, 2-image acquisition device, 3-projection optical engine under test, 31-main body of the projection optical engine under test, 32-lens of the projection optical engine under test, 4-pressing block assembly, 41-pressing block, 411-first end, 412-second end, 413-horizontal section, 414-vertical section, 415-inclined bending section, 42-elastic component, 43-stroke groove, 44-limiting pin, 45-slide rail, 451-limiting component, 46-adapter plate, 461-slot, 5-pressing component, 51-lifting seat, 52-mounting seat, 53-wrench, 54-pressing component, 541-buffer part, 55-intermediate component. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.

[0031] like Figures 1-3 As shown, an apparatus for testing a projection optical engine includes a base 1, a pressure block assembly 4, and a pressing assembly 5.

[0032] The base 1 is provided with a first mounting area 11 for connecting the image acquisition device 2 and a second mounting area 12 for connecting the projector 3 under test. In this embodiment, the first mounting area 11 is a circular mounting hole structure, and the second mounting area 12 is also a circular mounting hole structure. The first mounting area 11 and the second mounting area 12 are arranged close to each other, so that when the image acquisition device 1 and the projector 3 under test are installed in the first mounting area 11 and the second mounting area 12 respectively, their working surfaces face the same direction. In this embodiment, the image acquisition device 1 is a 3D camera. Figure 2 Taking the direction shown as an example, the camera lens of the 3D camera is set downwards, and the lens of the projector optical engine 3 under test is also set downwards, that is, the working surfaces of both are set downwards.

[0033] The main body 31 and lens 32 of the projector optical engine 3 under test are detachably connected. The main body 31 is located above the second mounting area 12, and the lens 32 is located below the second mounting area 12. To achieve an effective connection between the two, as follows: Figure 3 As shown, at least two positioning holes 121 are provided in the second mounting area 12, and a protrusion that can be inserted into the positioning holes 121 is provided at the bottom of the main body 31. The protrusion and the positioning holes 121 are used to achieve accurate positioning and connection between the two, so as to avoid the connection position from being offset.

[0034] The pressure block assembly 4 includes at least a pressure block 41 that can rotate around a pivot point to move away from or towards the top of the projector 3 under test. In the initial state, a distance is formed between the pressure block 41 and the projector 3 under test. In other words, in the initial state, the pressure block 41 is away from the top of the projector 3 under test and at a certain distance, which facilitates the disassembly and assembly of the projector 3 under test.

[0035] like Figures 3-6As shown, the pressure block assembly 4 also includes a slide rail 45 and an adapter plate 46 slidably connected to the slide rail 45. The first end 411 of the pressure block 41 is rotatably connected to the side of the adapter plate 46, and the position of the pressure block 41 near the first end 411 abuts against the elastic member 42. Specifically, the two ends of the elastic member 42 abut against the inner bottom surface of the adapter plate 46 and the lower bottom surface of the pressure block 41 near the first end 411, respectively. To prevent the elastic member 42 from shifting arbitrarily, slots 461 are formed on the lower bottom surface of the pressure block 41 and the inner bottom surface of the adapter plate 46, and the two ends of the elastic member 42 extend into the slots 461. The second end 412 of the pressure block 41 is located above the second mounting area 12. The elastic member 42 is used to drive the second end 412 of the pressure block 41 to tilt upward, thereby creating a distance between it and the projection optical engine 3 under test.

[0036] To limit the rotation range of the pressure block 41, such as Figure 4 As shown, there is a limiting pin 44 and a stroke groove 43 between the first end 411 of the pressure block 41 and the adapter plate 46. Specifically, the limiting pin 44 is located on the side of the adapter plate 46, and the stroke groove 43 is distributed in an arc shape with the fulcrum of the first end 411 of the pressure block 41 as the center. Thus, the rotation range of the pressure block 41 is determined by the stroke groove 43, which avoids the pressure block 41 from tilting upwards too much and thus not being able to be effectively pressed down by the pressing component 5, and also avoids the pressure block 41 from tilting upwards too much, which would make the assembly of the projection optical engine 3 under test inconvenient.

[0037] like Figure 5 As shown, the pressure block 41 includes a horizontal segment 413, a vertical segment 414, and an inclined bending end 415 located between the horizontal segment 413 and the vertical segment 414. The length of the horizontal segment 413 is greater than the length of the vertical segment 414. Compared with the horizontal segment 413 and the vertical segment 414 being bent vertically, the setting of the inclined bending end 415 avoids interference between the pressure block 41 and the projector 3 under test, and can increase the structural strength of the pressure block 41.

[0038] like Figure 6 As shown, the slide rail 45 is a linear slide rail that extends along a direction perpendicular to the projector 3 under test. In order to limit the translation range of the adapter plate 46, two limit members 451 are provided on the slide rail 45, located at both ends of the slide rail 45 respectively. After the adapter plate 46 contacts the limit member 451, it cannot continue to move, thereby limiting the translation stroke of the adapter plate 46 along the slide rail 45.

[0039] like Figure 7As shown, the pressing component 5 is used to apply downward pressure to the pressing block 41, thereby causing the pressing block 41 to rotate and cooperate with the base 1 to clamp the projector optical engine 3 under test. In other words, the pressing component 5 is used to apply downward pressure to the pressing block 41, so that the pressing block 41 overcomes the distance between itself and the projector optical engine 3 under test and comes into contact with the projector optical engine 3 under test, and transmits the force to the pressing block 41 to press the projector optical engine 3 under test downward, so as to prevent the projector optical engine 3 under test from falling off the base 1.

[0040] The pressing assembly 5 includes a lifting seat 51, a mounting seat 52 connected to the lifting seat 51, a wrench 53 rotatably connected to the mounting seat 52, a pressing member 54 rotatably connected to the mounting seat 52, and an intermediate member 55 rotatably connected to the pressing member 54 and the wrench 53 respectively. Figure 8 As shown, in the initial state, there is a gap between the pressing member 54 and the pressing block 41. At this time, the pressing member 54 also forms a distance with the projector 3 under the action of the elastic member 42.

[0041] When an external force is applied to rotate the wrench 53, the pressing member 54 rotates toward the pressure block 41, thereby pressing down the pressure block 41. In order to avoid damage to the pressure block 41, a buffer part 541 is formed at the position where the pressing member 54 contacts the pressure block 41. The buffer part 541 is made of a material such as rubber.

[0042] like Figure 9 As shown, when the wrench 53 is rotated clockwise to the point where its rotation connection with the mounting base 52, the point where the pressure member 54 is rotated with the mounting base 52, and the point where the wrench 53 is rotated with the intermediate member 55 are on the same vertical line, the buffer part 541 can stay in the state of the pressure block 41, specifically abutting against the top surface of the transverse section 413 of the pressure member 54, so that the pressure member 54 and the base 1 cooperate to firmly clamp the projector optical engine 3 to be tested.

[0043] When the wrench 53 is turned counterclockwise to press down the intermediate part 55, it can cause the pressing part 54 to tilt away from the pressure block 41. At this time, under the action of the elastic part 42, the pressing part 54 automatically tilts up and forms a distance with the projector 3 to be tested.

[0044] like Figure 1 , Figure 3 , Figure 8 , Figure 9 As shown, the base 1 is provided with a support member 13. The pressure block assembly 4 and the pressing assembly 5 are both located on the top surface of the support member 13, thereby raising both of them. This facilitates the pressure block assembly 4 pressing down on the projector 3 from the top of the device under test. The lifting seat 51 of the pressing assembly 5 further raises the pressure block assembly 4, facilitating the pressing assembly 5 to press down on the pressure block assembly 4. The hollow space below the support member 13 forms an accommodating space 14, which is used to place circuit boards and other components. At the same time, this accommodating space 14 also facilitates the installation of the image acquisition device 2.

[0045] In use, the main body 31 of the projector 3 under test is positioned and installed in the second mounting area 12 of the base 1, and its lens 32 is installed in the main body 31. The image acquisition device 2 is installed in the first mounting area 11 of the base 1. The projector 3 under test projects light downwards, and the image acquisition device 2 is used to capture the image projected by the projector 3 under test. Based on the image, it can be determined whether there are defects such as dust entering or uneven brightness inside the projector. The specific judgment process here is existing technology and will not be described in detail.

[0046] The above specific embodiments are used to explain and illustrate the present utility model, and are not intended to limit the present utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims shall fall within the protection scope of the present utility model.

Claims

1. An apparatus for detecting a projection optical engine, characterized in that, include: The base (1) is provided with a first mounting area (11) for connecting the image acquisition device (2) and a second mounting area (12) for connecting the projector (3) under test. The pressure block assembly (4) includes at least a pressure block (41) that can rotate about a fulcrum away from or towards the projector optical engine (3) under test, and in the initial state, the pressure block (41) and the projector optical engine (3) under test form a distance; The pressing component (5) is used to apply downward pressure to the pressing block (41) so that the pressing block (41) rotates and cooperates with the base (1) to clamp the projector optical engine (3) to be tested.

2. The apparatus for detecting a projection optical engine according to claim 1, characterized in that: The second end (412) of the pressure block (41) is located above the second mounting area (12). The pressure block (41) abuts against the elastic member (42), which is used to drive the second end (412) of the pressure block (41) to form a distance between it and the projection optical engine (3) to be tested.

3. The apparatus for detecting a projection optical engine according to claim 2, characterized in that: The pressure block assembly (4) includes a slide rail (45) and a transition plate (46) slidably connected to the slide rail (45). The pressure block (41) is rotatably connected to the transition plate (46). The two ends of the elastic member (42) abut against the bottom surface of the transition plate (46) and the pressure block (41) respectively.

4. The apparatus for detecting a projection optical engine according to claim 3, characterized in that: The first end (411) of the pressure block (41) and the adapter plate (46) have a limiting pin (44) and a stroke groove (43), which work together to limit the rotation range of the pressure block (41).

5. The apparatus for detecting a projection optical engine according to claim 3, characterized in that: The slide rail (45) is provided with a limiting member (451) to limit the translational travel of the adapter plate (46) along the slide rail (45).

6. The apparatus for detecting a projection optical engine according to claim 1, characterized in that: The first installation area (11) and the second installation area (12) are arranged close to each other, and when the image acquisition device (2) and the projector (3) under test are installed, their working surfaces face the same direction.

7. The apparatus for detecting a projection optical engine according to claim 1, characterized in that: The pressing assembly (5) includes a lifting seat (51), a mounting seat (52) connected to the lifting seat (51), a wrench (53) rotatably connected to the mounting seat (52), a pressing member (54) rotatably connected to the mounting seat (52), and an intermediate member (55) rotatably connected to the pressing member (54) and the wrench (53) respectively. In the initial state, there is a gap between the pressing member (54) and the pressure block (41). When an external force is applied to rotate the wrench (53), the pressing member (54) rotates towards the pressure block (41) and presses down on the pressure block (41).

8. The apparatus for detecting a projection optical engine according to claim 7, characterized in that: A buffer portion (541) is formed at the position where the pressing member (54) contacts the pressing block (41).

9. The apparatus for detecting a projection optical engine according to claim 1, characterized in that: The pressure block (41) includes a horizontal section (413), a vertical section (414), and an inclined bending section (415) located between the horizontal section (413) and the vertical section (414).

10. The apparatus for detecting a projection optical engine according to claim 1, characterized in that: The base (1) is provided with a support (13), the pressure block assembly (4) and the pressing assembly (5) are located on the top surface of the support (13), and the lower part of the support (13) is hollow to form an accommodating space (14).

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