CN114924377A - Optical module and assembling method thereof - Google Patents
Optical module and assembling method thereof Download PDFInfo
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- CN114924377A CN114924377A CN202210473576.4A CN202210473576A CN114924377A CN 114924377 A CN114924377 A CN 114924377A CN 202210473576 A CN202210473576 A CN 202210473576A CN 114924377 A CN114924377 A CN 114924377A
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- lens
- supporting part
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- hole
- optical module
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- 230000003287 optical effect Effects 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000003292 glue Substances 0.000 claims description 7
- 238000013461 design Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
Abstract
The application discloses an optical module and an assembling method thereof. The optical module comprises a prism, a lens component, a fixed support and an optical machine main body, wherein the prism and the lens component are assembled on the optical machine main body through the fixed support; the lens assembly comprises a lens, and the fixed support comprises a first supporting part and a second supporting part; the lens is assembled on the first supporting part, the prism is fixedly assembled on the second supporting part, and the second supporting part is fixedly connected to the first supporting part; the second supporting part is provided with a light through hole, and light beams can be conducted between the lens and the prism through the light through hole.
Description
Technical Field
The present disclosure relates to the field of optics, and more particularly, to an optical module and an assembling method thereof.
Background
In the design of projection optics, especially of the Reverse Total Internal Reflection (RTIR) type, the assembly of the prism is highly demanding, both with respect to the precision of the prism itself and with respect to the precision of the assembly with the Digital Micromirror (DMD) and the lens. In actual assembly, the prism is usually directly installed on the optical machine main body, the distance, the verticality and the like between the bearing surfaces of the optical machine main body, the DMD or the lens and other parts are usually required to be respectively adjusted in order to ensure the assembling precision of the prism, and due to the fact that the number of key dimensions is large, consideration is difficult to achieve, active alignment actions need to be added through the lens, the DMD or the prism to reduce accumulated tolerance, such as Modulation Transfer Function (MTF), dark corner dark bands and the like, the operation is complex, the production time of the optical machine is prolonged, and the production efficiency is reduced.
Disclosure of Invention
An object of the present application is to provide a new solution for an optical module and an assembling method thereof.
According to a first aspect of the present application, there is provided an optical module applied to a projection apparatus, including:
the lens module comprises a prism, a lens component, a fixed support and an optical machine main body, wherein the prism and the lens component are assembled on the optical machine main body through the fixed support;
the lens assembly comprises a lens, and the fixed support comprises a first supporting part and a second supporting part;
the lens is assembled on the first supporting part, the prism is fixedly assembled on the second supporting part, and the second supporting part is fixedly connected to the first supporting part;
the second supporting part is provided with a light through hole, and light beams can be conducted between the lens and the prism through the light through hole.
Optionally, the first supporting part comprises a cylindrical structure matched with the shape of the lens, and a fitting structure extending outwards along the circumferential direction of a first port of the cylindrical structure;
the lens is assembled on the cylindrical structure, and the second supporting part is fixed on the assembling structure, so that the light through hole faces the first port.
Optionally, the mounting structure is provided with a positioning portion, and the fixing bracket can be constrained on a specific structure through the positioning portion.
Optionally, the positioning portion includes a first positioning hole and a second positioning hole, and the first positioning hole and the second positioning hole are respectively located on different sides of the fixing bracket.
Optionally, the first positioning hole is a circular hole, the second positioning hole is a kidney-shaped hole, and the first positioning hole and the second positioning hole are arranged oppositely.
Optionally, an assembly hole is formed in an edge of the assembly structure, and the assembly hole is used for assembling the fixing support on the optical machine main body.
Optionally, the second support portion includes a carrier plate and at least two carrier posts located at an edge of the carrier plate, and the light passing hole is located on the carrier plate;
the prism is adhered to the bearing plate, and the bearing plate is fixed on the assembly structure through the bearing column.
Optionally, the bearing column is fixed on the first supporting part through glue or screws; or the first supporting part and the second supporting part are of an integrally formed structure.
Optionally, the lens assembly further comprises a focusing element, the lens is movably assembled on the first supporting part through the focusing element, and the focusing element is configured to enable the lens to move along the optical axis of the lens.
According to a second aspect of the present application, there is provided an assembling method of an optical module, applied to the optical module of the first aspect, including:
fixing the fixed support on a tool;
positioning and fixing the prism onto the second support part;
and assembling the fixed support fixed with the prism on the optical machine main body, and assembling the lens component on the first supporting part.
According to one embodiment of the application, the prism is disassembled from the optical machine main body by assembling the prism on the fixing support capable of assembling the lens assembly at the same time.
In actual production, the assembly precision of the prism can be adjusted by positioning the relative position of the prism assembly relative to the lens when the prism assembly is assembled on the fixed support, the conditions that the distance between the bearing surfaces of each part such as the optical machine main body and the lens and the key dimensions such as perpendicularity need to be respectively adjusted when the prism is directly assembled on the optical machine main body are avoided, the assembly tolerance is reduced, the optical machine main body only needs to ensure the stability, and the optical performance and the assembly efficiency of the optical module are improved.
Further features of the present application and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic structural diagram illustrating a prism and a lens of an optical module provided in the present application, which are mounted on a fixing bracket.
Fig. 2 is a schematic view of the prism of fig. 1 disassembled from the fixing bracket.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a flowchart of an assembling method of an optical module according to the present disclosure.
Description of reference numerals:
100. a prism; 200. a lens; 300. fixing a bracket; 301. a cylindrical structure; 302. assembling the structure; 303. a light through hole; 304. a carrier plate; 305. a load bearing column; 306. a first positioning hole; 307. a second positioning hole; 308. and (7) assembling holes.
Detailed Description
Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.
In an embodiment of the present application, an optical module applied to a projection apparatus is provided, as shown in fig. 1 to 3, including: the optical engine comprises a prism 100, a lens 200 assembly, a fixing support 300 and an optical engine main body, wherein the prism 100 and the lens 200 assembly are assembled on the optical engine main body through the fixing support 300; the lens 200 assembly includes a lens 200, and the fixing bracket 300 includes a first supporting part and a second supporting part; the lens 200 is assembled on the first support part, the prism 100 is fixedly assembled on the second support part, and the second support part is fixedly connected to the first support part; the second support part has a light passing hole 303, and light beams can be conducted between the lens 200 and the prism 100 through the light passing hole 303.
The prism 100 and the lens 200 assembly are assembled on the optical main body through the fixing bracket 300, so that the prism 100 can be disassembled from the optical main body. In the assembling process, the lens 200 is assembled at a specific position of the first supporting part, and the first supporting part and the second supporting part are fixedly connected, so that the prism 100 and the lens 200 can be accurately assembled only by adjusting the relative position of the prism 100 on the second supporting part, and the fixing support 300 provided with the lens 200 and the prism 100 is assembled on the optical machine main body after the assembly is completed. The prism 100 may be a single prism 100 structure, or may be a plurality of prism groups, which is not limited in this application.
The specific shapes of the first and second support parts may be designed according to the shapes of the lens 200 and the prism 100 and the assembly requirements. For example, the first supporting portion may be designed to have a shape matching the lens 200 to better achieve a supporting function, and the connection between the second supporting portion and the first supporting portion may be directly formed in an integral manner, or may be a separate structure fixed and assembled by glue or a fastener, which is not limited in this application.
The light-passing hole 303 provided on the second support part can realize light beam transmission between the prism 100 and the lens 200. For example, after the light beam enters the prism 100, the light beam can be transmitted to the lens 200 through the light-transmitting hole 303 by the action of the prism 100, and finally projected through the lens 200. The shape and size of the light-passing hole 303 may be selected according to design parameters of the lens 200, the prism 100, and other components, which is not limited in the present application.
In this way, the optical module of this application can be through fixed bolster 300, assemble prism 100 and camera lens 200 in the ray apparatus main part, disassemble prism 100 from the ray apparatus main part, make in the assembling process, the assembly precision accessible of prism 100 and camera lens 200 is realized in the relative position of fixed bolster 300, when having avoided assembling prism 100 directly on the ray apparatus main part, need adjust the ray apparatus main part respectively, the distance between the face of leaning on of each part such as camera lens 200, critical dimension such as straightness that hangs down, assembly tolerance has been reduced, and the ray apparatus main part only need guarantee stability can, when taking into account optical module's optical property, the accumulative tolerance has been reduced, the assembly degree of difficulty has been simplified, production efficiency has been improved.
In one embodiment of the present application, as shown in fig. 1 to 2, the first support portion includes a cylindrical structure 301 matching the shape of the lens 200, and a fitting structure 302 extending outward in a circumferential direction of a first port of the cylindrical structure 301; the lens 200 is mounted on the tubular structure 301, and the second support portion is fixed to the mounting structure 302 with the light-passing hole 303 facing the first port.
The first supporting part comprises a cylindrical structure 301 matched with the lens 200, two ends of the cylindrical structure are provided with openings, and the first end faces the second light through hole 303, so that the prism 100 and the lens 200 can conduct light beams conveniently. The edge of the first port of the cylindrical structure 301 extends outward to form an assembling structure 302, so as to facilitate the assembling of the whole fixing bracket 300 on the optical machine body, or the assembling between the first supporting part and the second supporting part.
In one embodiment of the present application, the assembling structure 302 is provided with a positioning portion, and the fixing bracket 300 can be constrained on a specific structure through the positioning portion.
The fixing structure 302 of the fixing bracket 300 is provided with a positioning portion, which can play a role of restraining the fixing bracket 300 during the assembling process. For example, when the prism 100 needs to be fixed on the fixing bracket 300, the fixing bracket 300 may be assembled on a tool through the positioning portion, and the fixing bracket 300 needs to be disassembled from the tool after the prism 100 is assembled, so the positioning portion may restrict the fixing bracket 300 to move only in at least one direction, which may save assembly or disassembly time and improve production efficiency, and specifically, the positioning manner may be selected according to the positioning manner of the prism 100 and the fixing bracket 300, which is not limited in this application.
In addition, the arrangement of the positioning part can also prevent the important structure of the fixing support 300 from being damaged by the tool when the fixing support 300 is directly fixed on the tool, so that the yield of the product is improved.
In one embodiment of the present application, as shown in fig. 1 to 3, the positioning portion includes a first positioning hole 306 and a second positioning hole 307, and the first positioning hole 306 and the second positioning hole 307 are respectively located on different sides of the fixing bracket 300.
The first positioning hole 306 and the second positioning hole 307 can cooperate with the positioning posts to position the fixing bracket 300, for example, positioning posts matched with the first positioning hole 306 and the second positioning hole 307 are arranged on a tool, when the prism 100 is assembled, the first positioning hole 306 and the second positioning hole 307 are respectively assembled on the positioning posts, so that the fixing bracket 300 can be prevented from moving on the plane where the first positioning hole 306 and the second positioning hole 307 are located, and when the fixing bracket 300 needs to be disassembled, the fixing bracket 300 only needs to be taken down from the positioning posts, so that the operation is convenient.
The first positioning hole 306 and the second positioning hole 307 are respectively located on different sides of the fixing bracket 300, that is, the first positioning hole 306 and the second positioning hole 307 may be designed according to the specific shape of the fixing bracket 300, for example, if the fixing bracket 300 is designed to be square, the first positioning hole 306 and the second positioning hole 307 may be located on different sides of the square, which is not limited in the present application.
In an embodiment of the present application, as shown in fig. 1 to 2, the first positioning hole 306 is a circular hole, the second positioning hole 307 is a kidney-shaped hole, and the first positioning hole 306 and the second positioning hole 307 are disposed opposite to each other.
First locating hole 306 designs for the round hole, can directly match with the reference column, avoids fixed bolster 300 to move left and right on its horizontal plane, and second locating hole 307 designs for waist type hole can be convenient for the assembly on the one hand, saves the assemble duration when fixing bolster 300 location on other parts, and on the other hand can also retrain the rotation of fixed bolster 300, has increased the stability of fixed bolster 300 assembly.
In one embodiment of the present application, as shown in fig. 3, the edge of the mounting structure 302 is provided with a mounting hole 308, and the mounting hole 308 is used for mounting the fixing bracket 300 on the optical engine body.
The second assembly holes 308 arranged on the periphery of the fixing bracket 300 facilitate the assembly of the fixing bracket 300 on the optical machine main body, and the number and the specific arrangement position of the second assembly holes can be selected according to actual situations, which is not limited in the present application.
In one embodiment of the present application, as shown in fig. 1 to 2, the second supporting portion includes a carrier plate 304 and at least two carrier posts 305 located at the edge of the carrier plate 304, and the light passing hole 303 is located on the carrier plate 304; the prism 100 is attached to a carrier plate 304, and the carrier plate 304 is secured to the mounting structure 302 by a carrier post 305.
The second support part comprises a bearing plate 304 for bearing the prism 100 and a bearing column 305 for supporting the bearing plate 304, and the structural design can reduce the overall weight of the second support part and improve the convenience of the structure. The connection between the first support part and the second support part is also facilitated. The number and distribution of the support columns 305 can be selected according to actual conditions.
In one embodiment of the present application, the load-bearing post 305 is fixed to the first support portion by glue or screws; or the first supporting part and the second supporting part are of an integrally formed structure.
The supporting column 305 may be fixed on the first supporting portion by glue or screws, or the supporting column 305, the supporting plate 304 and the first supporting portion may be integrally formed, so as to save the subsequent assembly steps. The selection can be specifically performed according to actual situations, and the application is not limited to this.
In one embodiment of the present application, the lens 200 assembly further includes a focusing member through which the lens 200 is movably mounted on the first support portion, the focusing member being configured to enable the lens 200 to move along an optical axis thereof.
In some lens 200 assemblies requiring automatic focusing, a focusing element may be disposed to movably connect the lens 200 and the first supporting portion, and the lens 200 may move along the optical axis thereof under the action of the focusing element to adjust the focal length. The focusing member may be a driving motor, etc., which is not limited in this application.
In addition, a light modulation element, such as a vibrating mirror, a glass lens, a light-shielding ring, and the like, may be further disposed between the lens 200 and the prism 100, and may be specifically disposed according to actual requirements.
In another embodiment of the present application, as shown in fig. 4, an assembling method of an optical module is provided, which is applied to the optical module of the above embodiment, and includes:
fixing the fixing bracket 300 to a tool;
positioning and fixing the prism 100 to the second support part;
the fixing bracket 300 to which the prism 100 is fixed is assembled to the optical main body, and the lens 200 assembly is assembled to the first supporting part.
Specifically, as shown in fig. 4, the assembly may be performed according to the following steps:
s01, the fixing bracket 300 is fixed on a tool, so that the fixing bracket 300 is constrained to move in the setting direction.
S02, the prism 100 is attached to a movable mechanical arm or other movable device, and the prism 100 is positioned by calculating the relative position of the prism 100 on the fixed support 300, so that the prism 100 and the lens 200 can be assembled with high precision. The prism 100 and the second supporting portion may be fixed by gluing, that is, glue may be applied to a specific area of the fixing bracket 300 before the prism 100 is adjusted, and the prism 100 may be directly glued to the fixing bracket 300 by glue after being adjusted to a specific position.
S03, after the above steps are completed, the fixing frame 300 with the prism 100 bonded thereto can be detached from the tool, then the lens 200 assembly is assembled, and then the fixing frame 300 with the prism 100 and the lens 200 assembly assembled thereon is assembled on the optical machine body.
Above-mentioned assembly method, in the design, the ray apparatus main part only need guarantee stability can, the assembly precision of prism 100 can be adjusted when assembling prism 100 on fixed bolster 300, avoided follow-up need adjust ray apparatus main part and camera lens 200 each parts respectively hold operating procedure such as distance, straightness that hangs down between the face, practiced thrift the assemble duration. Moreover, because the assembly precision of the prism 100 is high, a subsequent step of adding a part of active alignment is omitted.
In the above embodiments, the differences between the embodiments are described in emphasis, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in consideration of brevity of the text.
Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications can be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.
Claims (10)
1. An optical module applied to a projection device, comprising:
the prism and the lens component are assembled on the optical machine main body through the fixing support;
the lens assembly comprises a lens, and the fixed support comprises a first supporting part and a second supporting part;
the lens is assembled on the first supporting part, the prism is fixedly assembled on the second supporting part, and the second supporting part is fixedly connected to the first supporting part;
the second supporting part is provided with a light through hole, and light beams can be conducted between the lens and the prism through the light through hole.
2. The optical module of claim 1,
the first supporting part comprises a cylindrical structure matched with the shape of the lens and an assembling structure extending outwards along the circumferential direction of a first port of the cylindrical structure;
the lens is assembled on the cylindrical structure, and the second supporting part is fixed on the assembling structure to enable the light through hole to face the first port.
3. The optical module of claim 2, wherein the mounting structure is provided with a positioning portion by which the mounting bracket can be constrained to a particular structure.
4. The optical module of claim 3, wherein the positioning portion comprises a first positioning hole and a second positioning hole, and the first positioning hole and the second positioning hole are respectively located on different sides of the fixing bracket.
5. The optical module as claimed in claim 4, wherein the first positioning hole is a circular hole, the second positioning hole is a kidney-shaped hole, and the first positioning hole is opposite to the second positioning hole.
6. The optical module of claim 2, wherein an assembly hole is disposed at an edge of the assembly structure, and the assembly hole is used for assembling the fixing bracket on the optical module body.
7. The optical module of claim 2,
the second supporting part comprises a bearing plate and at least two bearing columns positioned at the edge of the bearing plate, and the light through hole is positioned on the bearing plate;
the prism is adhered to the bearing plate, and the bearing plate is fixed on the assembly structure through the bearing column.
8. The optical module of claim 7, wherein the support post is fixed to the first support portion by glue or screws; or the first supporting part and the second supporting part are of an integrally formed structure.
9. The optical module of claim 1, wherein the lens assembly further comprises a focusing member, the lens being movably mounted to the first support member by the focusing member, the focusing member being configured to enable the lens to move along its optical axis.
10. A method of assembling an optical module according to any one of claims 1 to 9, comprising:
fixing the fixed support on a tool;
positioning and fixing the prism onto the second support part;
and assembling the fixed support fixed with the prism on the optical machine main body, and assembling the lens component on the first supporting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210473576.4A CN114924377A (en) | 2022-04-29 | 2022-04-29 | Optical module and assembling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210473576.4A CN114924377A (en) | 2022-04-29 | 2022-04-29 | Optical module and assembling method thereof |
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| CN114924377A true CN114924377A (en) | 2022-08-19 |
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| CN202210473576.4A Pending CN114924377A (en) | 2022-04-29 | 2022-04-29 | Optical module and assembling method thereof |
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Cited By (1)
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| CN114967297A (en) * | 2022-04-29 | 2022-08-30 | 歌尔光学科技有限公司 | Optical module and assembling method thereof |
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