CN218974665U

CN218974665U - Prism equipment correction equipment based on total reflection

Info

Publication number: CN218974665U
Application number: CN202223504527.7U
Authority: CN
Inventors: 高鹏; 王荣磊; 王旭; 赵彦普; 赵子珺; 钱智民
Original assignee: Nanyang Nanfang Intelligent Photoelectric Co ltd; Nanyang Institute of Technology
Current assignee: Nanyang Nanfang Intelligent Photoelectric Co ltd; Nanyang Institute of Technology
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-05
Anticipated expiration: 2032-12-27

Abstract

The utility model provides prism assembly correction equipment based on total reflection, and belongs to the technical field of optical metering equipment. A total reflection-based prism assembly correction device comprising: the product to be assembled comprises a product frame, a DMD and a prism, wherein the prism is a 45-degree right-angle prism, the inclined surface of the prism is opposite to the product frame, the light-receiving surface of the DMD is opposite to the first right-angle surface of the prism, the light-receiving surface of the laser automatic collimator is opposite to the second right-angle surface of the prism, and the prism is connected with a mechanical arm. The prism assembly correction equipment based on total reflection provided by the utility model realizes high-precision assembly of the prism in the DLP projection system.

Description

Prism equipment correction equipment based on total reflection

Technical Field

The utility model belongs to the technical field of optical metering equipment, and particularly relates to prism assembly correction equipment based on total reflection.

Background

The RTIR optical element group for the DLP projection system has very high requirement on the assembly precision of the prism, and is usually within +/-0.2 degrees, and the large assembly deviation can cause the problems of on-site curvature, unclear pictures and the like of the system.

The traditional assembly mode is to ensure the consistency of assembly by a single prism assembly jig, and to take the assembly jig to another collimation device for confirmation after the assembly is completed.

Due to the influences of batch differences of structural members and assembly methods, the accuracy of prism assembly is limited, the deviation exceeds the standard, and the prism is repaired, and about 3% of disassembly and scrapping exists in repair, so that the yield of products is difficult to improve.

In view of this, the present utility model has been made.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a prism assembly correction device based on total reflection for realizing high-precision assembly of prisms in a DLP projection system.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a total reflection-based prism assembly correction device comprising: the product to be assembled comprises a product frame, a DMD and a prism, wherein the prism is a 45-degree right-angle prism, the inclined surface of the prism is opposite to the product frame, the light-receiving surface of the DMD is opposite to the first right-angle surface of the prism, the light-receiving surface of the laser automatic collimator is opposite to the second right-angle surface of the prism, and the prism is connected with a mechanical arm.

Preferably, the mechanical arm is a five-axis mechanical arm so as to meet the requirement of adjusting the assembly position and angle of the prism.

Preferably, a suction nozzle is arranged at the movable end of the mechanical arm, and the suction nozzle is connected with the prism. Through setting up the suction nozzle at the expansion end of arm to make things convenient for the prism to be connected with the arm, realize stable adjustment.

Preferably, the suction nozzle is square, hollow inside, one end faces the laser automatic collimator, and the other end is connected with the second right-angle surface of the prism. The suction nozzle is used for clamping the prism so as to facilitate azimuth adjustment of the prism, and meanwhile, the interior of the suction nozzle is hollow so as to allow light rays of the laser automatic collimator to be injected into the corresponding surface of the prism.

Preferably, the product frame is disposed on the frame receiving table so that the height of the product frame is identical to the assembly height of the DMD and the prism.

Preferably, the frame receiving table is arranged on the slideway to adjust the horizontal position of the product frame so as to be positioned at a preset assembly position.

Preferably, the prism assembly correction device based on total reflection further comprises: the laser automatic collimator and the mechanical arm are arranged on the substrate.

Preferably, the slide is disposed on the substrate.

Preferably, the base plate is provided with positioning holes for fixing the device.

Compared with the prior art, the utility model has the following beneficial effects:

based on the technical scheme, the high-precision assembly of the prism in the DLP projection system is realized, wherein: the emergent light of the laser automatic collimator enters the prism, vertically enters through the second right-angle surface of the prism and is reflected to the first right-angle surface of the prism to exit, the emergent light is reflected to the first right-angle surface of the prism through the DMD, enters through the first right-angle surface of the prism and is reflected to the second right-angle surface of the prism to exit, the emergent light enters the laser automatic collimator, the light emitted by the laser automatic collimator returns to the laser automatic collimator through twice total reflection of the light, and the position of the prism is adjusted through the mechanical arm to correct the route of the light reflected back by the second time, so that the prism finally meets the requirement of assembly specifications.

According to the technical scheme and the principle thereof, the disassembly rejection rate can be effectively reduced, and the yield is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1: the utility model relates to a three-dimensional structure schematic diagram of prism assembly correction equipment based on total reflection;

fig. 2: the utility model relates to a structural schematic diagram of prism assembly correction equipment based on total reflection;

fig. 3: the utility model relates to a principle schematic diagram of prism assembly correction equipment based on total reflection;

the device comprises a 1-product frame, a 2-DMD, a 3-prism, a 301-inclined plane, a 302-first right-angle surface, a 303-second right-angle surface, a 4-mechanical arm, a 5-suction nozzle, a 6-frame receiving platform, a 7-slideway, an 8-laser automatic collimator, a 9-substrate and a 10-positioning hole.

Detailed Description

For a better understanding of the present utility model, the following examples are set forth to further illustrate the utility model, but are not to be construed as limiting the utility model. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details.

It should be noted that, the terms "first," "second," and the like are used for defining the components, and are merely for convenience in distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, so they should not be construed as limiting the scope of the present utility model.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only for the purpose of explaining the present patent and are not to be construed as limiting the utility model.

In the present utility model, the DMD is a digital micromirror device (Digtial Micromirror Devices).

As shown in fig. 1 and 2, the prism assembly correction device based on total reflection includes: the product to be assembled comprises a product frame 1, a DMD2 and a prism 3, wherein the prism 3 is a 45-degree right-angle prism 3, an inclined plane 301 of the prism 3 is opposite to the product frame 1, a light receiving surface of the DMD2 is opposite to a first right-angle surface 302 of the prism 3, a light receiving surface of the laser automatic collimator 8 is opposite to a second right-angle surface 303 of the prism 3, and the prism 3 is connected with a mechanical arm 4.

In one embodiment of the present utility model, the mechanical arm 4 is a five-axis mechanical arm 4, so as to meet the requirement of adjusting the assembly position and angle of the prism 3. It is understood that six-axis mechanical arm 4, seven-axis mechanical arm 4, etc. can fully satisfy the needs of the present utility model in addition to five-axis mechanical arm 4.

As shown in fig. 2, the movable end of the mechanical arm 4 is provided with the suction nozzle 5, and the suction nozzle 5 is connected with the prism 3, so that the prism 3 is conveniently connected with the mechanical arm 4, and stable adjustment is realized.

As a preferred embodiment, the suction nozzle 5 has a square shape, is hollow in the interior, has one end facing the laser automatic collimator 8, and has the other end connected to the second right-angle surface 303 of the prism 3. The suction nozzle 5 in the utility model has the function of clamping the prism 3, the shape of the suction nozzle 5 is adapted to the shape of the connection part of the prism 3, so that the prism 3 can be conveniently adjusted in azimuth, and meanwhile, the interior of the suction nozzle 5 is hollow, so that the light rays of the laser automatic collimator 8 are allowed to directly enter the corresponding surface of the prism 3.

In one embodiment of the present utility model, the product housing 1 is disposed on the housing receiving table 6 such that the height of the product housing 1 coincides with the assembly height of the DMD2, the prism 3.

As a preferred embodiment, the frame receiving table 6 is arranged on the slideway 7 to adjust the horizontal position of the product frame 1 to be at a preset assembly position; or to facilitate adjustment during assembly to achieve more efficient assembly.

In a specific embodiment of the present utility model, the prism assembly correction device based on total reflection further includes: the base plate 9, wherein, laser automatic collimator 8, arm 4 and slide 7 all set up on base plate 9 to the integration equipment, make things convenient for the fixed of each part.

In a specific embodiment of the present utility model, the base plate 9 is provided with positioning holes 10 for fixing the apparatus, and the number of the positioning holes 10 can be adjusted conventionally as required.

As shown in fig. 3, the above technical solution is applied to high-precision assembly of the prism 3 in the DLP projection system, wherein: the outgoing light L1 of the laser auto-collimator 8 enters the prism 3, vertically enters through the second right-angle surface 303 of the prism 3 and is reflected to the first right-angle surface 302 of the prism 3 by the inclined surface 301 of the prism 3, the outgoing light L2 is reflected back to the first right-angle surface 302 of the prism 3 through the DMD2, enters through the first right-angle surface 302 of the prism 3 and is reflected to the second right-angle surface 303 of the prism 3 by the inclined surface 301 of the prism 3, the outgoing light L3 enters the laser auto-collimator 8, the light emitted by the laser auto-collimator 8 returns to the laser auto-collimator 8 through twice total reflection of the light, and the position of the prism 3 is adjusted through the mechanical arm 4 to correct the route of the light L3 reflected back again, so that the prism 3 finally meets the requirement of assembly specification, the disassembly rejection rate is reduced, and the yield is improved.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. Prism equipment correction equipment based on total reflection, its characterized in that: comprising the following steps: the product to be assembled comprises a product frame, a DMD and a prism, wherein the prism is a 45-degree right-angle prism, the inclined surface of the prism is opposite to the product frame, the light-receiving surface of the DMD is opposite to the first right-angle surface of the prism, the light-receiving surface of the laser automatic collimator is opposite to the second right-angle surface of the prism, and the prism is connected with a mechanical arm.

2. The total reflection-based prism assembly correction device of claim 1, wherein: the mechanical arm is a five-axis mechanical arm.

3. The total reflection-based prism assembly correction device of claim 2, wherein: the movable end of the mechanical arm is provided with a suction nozzle, and the suction nozzle is connected with the prism.

4. A total reflection-based prism assembly correction device as recited in claim 3, wherein: the suction nozzle is square, the inside is hollow, one end faces the laser automatic collimator, and the other end is connected with the second right-angle surface of the prism.

5. A total reflection-based prism assembly correction device as recited in any one of claims 1-4, wherein: the product frame body is arranged on the frame body receiving table.

6. The total reflection-based prism assembly correction device as recited in claim 5, wherein: the frame body receiving table is arranged on the slideway.

7. The total reflection-based prism assembly correction device as recited in claim 6, wherein: the prism assembly correction device based on total reflection further includes: the laser automatic collimator and the mechanical arm are arranged on the substrate.

8. The total reflection-based prism assembly correction device as recited in claim 7, wherein: the slideway is arranged on the substrate.

9. The total reflection-based prism assembly correction device as recited in claim 7 or 8, wherein: and the base plate is provided with a positioning hole.