CN213544970U - Polarization beam splitting prism assembly - Google Patents
Polarization beam splitting prism assembly Download PDFInfo
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- CN213544970U CN213544970U CN202022977870.8U CN202022977870U CN213544970U CN 213544970 U CN213544970 U CN 213544970U CN 202022977870 U CN202022977870 U CN 202022977870U CN 213544970 U CN213544970 U CN 213544970U
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- mirror
- mirror body
- prism assembly
- inclined plane
- limiting plate
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- 230000010287 polarization Effects 0.000 title claims abstract description 27
- 238000010030 laminating Methods 0.000 claims abstract description 10
- 230000003595 spectral effect Effects 0.000 claims description 16
- 239000012528 membrane Substances 0.000 claims description 7
- 230000008033 biological extinction Effects 0.000 abstract description 12
- 238000009434 installation Methods 0.000 abstract description 7
- 239000011521 glass Substances 0.000 description 4
- 239000005357 flat glass Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model discloses a polarization beam splitting prism assembly, which belongs to the field of polarization beam splitting prisms, and the utility model discloses a polarization beam splitting prism assembly, which comprises a first mirror body, a second mirror body and a limiting mirror, wherein the first mirror body is a right trapezoid cylinder, the shortest side of the first mirror body is a bonding surface, and one side of the limiting mirror is adhered to the bonding surface; the second mirror body is right triangle's cylinder, the inclined plane of the second mirror body with be provided with a plurality of beam split level crossing between the inclined plane of the first mirror body, a right angle face of the second mirror body with one side laminating of spacing mirror. The light splitting plane mirror and the second mirror body are clamped and fixed by the limiting mirror and the first mirror body, so that the installation is convenient, and different extinction ratios can be achieved by adjusting the number of the light splitting plane mirrors.
Description
Technical Field
The utility model relates to a glass optics field especially relates to a polarization beam splitting prism subassembly.
Background
The polarizing prism is a device frequently used in a polarizing light path, mainly plays a role of polarization light splitting, and has wide application in consumer industries such as laser systems, optical communication devices, optical test measuring instruments, display instruments and the like. The structure of the existing glass polarization beam splitter prism is as follows: the light source comprises a pair of right-angle prisms, wherein the inclined plane of one right-angle prism is plated with a polarization beam splitting film, the inclined plane of the other right-angle prism is a polished plane, the inclined planes of the two prisms are glued to form the light source, and the four right-angle planes are plated with anti-reflection films so as to reduce the reflection loss of light when the light passes through the prisms. The incident natural light and the emergent natural light are two linearly polarized light beams with high polarization degree, Tp: ts is more than 1000:1, the two beams of polarized light are mutually perpendicular, but in many system applications, higher extinction ratio is needed, and the existing glass polarizing prism can not meet the requirements. In addition, the existing Glan laser prism with high extinction ratio is made of birefringent crystal, so that the extinction ratio is high, but the crystal material is expensive, easy to cleave and deliquesce and difficult to process.
The polarization splitting prism with the high extinction ratio disclosed in chinese patent publication No. CN207992585U comprises a first mirror body and a second mirror body, wherein the first mirror body is rectangular, and a mounting cavity is arranged at one side of the first mirror body, the cross section of the mounting cavity at one side close to the edge of the first mirror body is rectangular, and the cross section at one side close to the middle part of the first mirror body is an isosceles right triangle; the second mirror body matches with the installation cavity and is inlayed in the installation cavity, presss from both sides between the first mirror body and the second mirror body and establishes flat glass, and flat glass is located between the installation cavity surface that isosceles right triangle right-angle side is relative and the second mirror body, and polarization beam splitting membrane has all been plated on flat glass's both sides.
The existing polarization beam splitter prism can not conveniently adjust the extinction ratio according to requirements, and the designed structure of the existing polarization beam splitter prism for achieving the higher extinction ratio is inconvenient to process.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to solve the technical problem of providing a polarization beam splitting prism assembly, which can facilitate the fixed mounting and change the extinction ratio by the time of adjusting the beam splitting which can be convenient after the mounting.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a polarization beam splitting prism assembly, including the first mirror body, the second mirror body and spacing mirror, the first mirror body is right trapezoid's cylinder, the shortest side of the first mirror body is the bonding surface, one side adhesion of spacing mirror with on the bonding surface; the second mirror body is right triangle's cylinder, the inclined plane of the second mirror body with be provided with a plurality of beam split level crossing between the inclined plane of the first mirror body, a right angle face of the second mirror body with one side laminating of spacing mirror.
The utility model discloses preferred technical scheme lies in, the inclined plane of the second mirror body with the inclined plane of the first mirror body is parallel to each other, a plurality of spectral level crossing thickness is even, the spectral level crossing with the one side of the inclined plane contact of the second mirror body is provided with the beam split membrane, the spectral level crossing with the one side of the inclined plane contact of the first mirror body also is provided with the beam split membrane, adjacent two simultaneously the face of spectral level crossing contact only has one the spectral level crossing is provided with the beam split membrane.
The utility model discloses preferably technical scheme lies in, a plurality of the spectral flat crossing is parallelogram, one side of spectral flat crossing with during the skew surface laminating of the second mirror body, the tip of spectral flat crossing with one side laminating of spacing mirror.
The utility model discloses preferred technical scheme lies in, spacing mirror is wave plate or lens, spacing mirror with the one side of second mirror body contact is the plane.
The utility model discloses preferred technical scheme lies in, still includes mounting plate, the last L type limiting plate that is provided with of mounting plate, the opposite side of spacing mirror with L type limiting plate offsets on one side, simultaneously the side of the first mirror body with the another side of L type limiting plate offsets.
The utility model discloses preferred technical scheme lies in, mounting plate is in the root of L type limiting plate sets up cuts the root groove.
The utility model discloses preferred technical scheme lies in, the tip on one side of L type limiting plate is provided with the grip block, one side of L type limiting plate is less than or equal to the width of spacing mirror, the one end of grip block is fixed in through two screws the tip of L type limiting plate, the other end of grip block with spacing mirror with the first mirror body offsets.
The utility model discloses preferred technical scheme lies in, the height of L type limiting plate is less than or equal to the shortest side length of first mirror body.
The utility model has the advantages that:
the utility model provides a polarization beam splitting prism assembly, including the first mirror body, the second mirror body and spacing mirror, the first mirror body is right trapezoid's cylinder, the shortest side of the first mirror body is the bonding surface, one side adhesion of spacing mirror with on the bonding surface; the second mirror body is right triangle's cylinder, the inclined plane of the second mirror body with be provided with a plurality of beam split level crossing between the inclined plane of the first mirror body, a right angle face of the second mirror body with one side laminating of spacing mirror. The light splitting plane mirror and the second mirror body are clamped and fixed by the limiting mirror and the first mirror body, so that the installation is convenient, and different extinction ratios can be achieved by adjusting the number of the light splitting plane mirrors.
Drawings
Fig. 1 is a schematic diagram of a polarization splitting prism assembly provided in an embodiment of the present invention;
in the figure:
1. a first mirror body; 2. a spectroscopic plane mirror; 3. a second mirror body; 4. a limiting mirror; 5. an L-shaped limiting plate; 6. A clamping plate; 7. mounting a bottom plate; 71. and (4) cutting a root groove.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1, the present embodiment provides a polarization splitting prism assembly, including a first mirror body 1, a second mirror body 3, and a limiting mirror 4, where the first mirror body 1 is a right trapezoid cylinder, the shortest side of the first mirror body 1 is an adhesive surface, and one side of the limiting mirror 4 is adhered to the adhesive surface; the second mirror body 3 is a right-angled triangle cylinder, the inclined plane of the second mirror body 3 is provided with a plurality of light splitting plane mirrors 2 between the inclined plane of the first mirror body 1, and a right-angled surface of the second mirror body 3 is attached to one side of the limiting mirror 4. The shortest limit through first mirror body 1 can be convenient couple together spacing mirror 4 to can form a stable triangle groove structure, second mirror body 3 and spectral flat mirror 2 can be convenient place in this triangle groove structure, the quantity of increase and decrease spectral flat mirror 2 that can be convenient, thereby reach different extinction ratios.
In order to adjust the extinction ratio conveniently, the inclined plane of the second mirror body 3 is parallel to the inclined plane of the first mirror body 1, the two inclined planes are both provided with a light splitting film, the thicknesses of the light splitting plane mirrors 2 are uniform, the light splitting film is arranged on the side, in contact with the inclined plane of the second mirror body 3, of each light splitting plane mirror 2, the light splitting film is also arranged on the side, in contact with the inclined plane of the first mirror body 1, of each light splitting plane mirror 2, and only one light splitting plane mirror 2 is arranged on the side, in contact with the adjacent light splitting plane mirrors 2, of each light splitting plane mirror 2. For example, when two splitting plane mirrors 2 are placed, light needs to pass through three splitting films, and the number of splitting times can be adjusted by increasing the number of the splitting plane mirrors 2, so that the extinction ratio can be adjusted.
Preferably, a plurality of spectral flat mirror 2 is parallelogram, when one side of spectral flat mirror 2 with the inclined plane laminating of second mirror body 3, the tip of spectral flat mirror 2 with the laminating of one side of spacing mirror 4. Therefore, the LED lamp can be tightly attached after being placed, gaps can not be generated, and the accuracy and stability of the light path are guaranteed.
Preferably, the limiting mirror 4 is a wave plate or a lens, and one surface of the limiting mirror 4 contacting the second mirror body 3 is a plane. The main function of the limiting mirror 4 is to ensure that the plane of the limiting mirror forms a right angle with the bottom surface of the first mirror body 1 after the shortest side of the first mirror body 1 is adhered, so that the right-angle side of the second mirror body 3 to be placed can be ensured to be in a vertical position.
Preferably, the glasses further comprise a mounting base plate 7, wherein an L-shaped limiting plate 5 is arranged on the mounting base plate 7, the other side of the limiting mirror 4 abuts against one side of the L-shaped limiting plate 5, and meanwhile, the side face of the first mirror body 1 abuts against the other side of the L-shaped limiting plate 5. The L-shaped limiting plate 5 needs to be guaranteed to form a 90-degree right angle after being milled, so that the first mirror body 1 can be guaranteed to be installed accurately when being installed. Further, the mounting base plate 7 is provided with a root cutting groove 71 at the root of the L-shaped stopper plate 5. The influence of the milled root on the placed first mirror body 1 can be avoided, and the placing level of the first mirror body 1 is ensured. Meanwhile, the first mirror body 1 and the limiting mirror 4 can be adhered together by the aid of the L-shaped limiting plate 5, and accuracy after installation is guaranteed.
Preferably, the end of one side of the L-shaped limiting plate 5 is provided with a clamping plate 6, one side of the L-shaped limiting plate 5 is smaller than or equal to the width of the limiting mirror 4, one end of the clamping plate 6 is fixed to the end of the L-shaped limiting plate 5 through two screws, and the other end of the clamping plate 6 abuts against the limiting mirror 4 and the first mirror body 1. Thereby being capable of conveniently clamping and fixing the first mirror body 1. An elastic gasket can be arranged between the clamping plate 6 and the L-shaped limiting plate 5, so that the installation is more stable and firm.
Preferably, the height of the L-shaped limiting plate 5 is less than or equal to the length of the shortest side of the first mirror body 1. The downside of first mirror body 1 belongs to the part that can not be used for the beam split, sets up L type limiting plate 5 and shelters from and also can not cause the influence to the light path, stability when can improve the fixing simultaneously.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (8)
1. A polarization splitting prism assembly, comprising:
the endoscope comprises a first endoscope body (1), a second endoscope body (3) and a limiting mirror (4), wherein the first endoscope body (1) is a right-angled trapezoid cylinder, the shortest side of the first endoscope body (1) is a bonding surface, and one side of the limiting mirror (4) is bonded to the bonding surface;
the second mirror body (3) is right triangle's cylinder, the inclined plane of the second mirror body (3) with be provided with a plurality of beam split level crossing (2) between the inclined plane of the first mirror body (1), the right angle face of the second mirror body (3) with one side laminating of spacing mirror (4).
2. The polarization splitting prism assembly of claim 1, wherein:
the inclined plane of the second mirror body (3) with the inclined plane of the first mirror body (1) is parallel to each other, a plurality of the light splitting level crossing (2) thickness is even, the light splitting level crossing (2) with the one side of the inclined plane contact of the second mirror body (3) is provided with the light splitting membrane, the light splitting level crossing (2) with the one side of the inclined plane contact of the first mirror body (1) also is provided with the light splitting membrane, adjacent two simultaneously the face of light splitting level crossing (2) contact only has one the light splitting level crossing (2) is provided with the light splitting membrane.
3. The polarization splitting prism assembly of claim 1, wherein:
a plurality of spectral flat mirror (2) are parallelogram, one side of spectral flat mirror (2) with during the inclined plane laminating of second mirror body (3), the tip of spectral flat mirror (2) with one side laminating of spacing mirror (4).
4. The polarization splitting prism assembly of claim 1, wherein:
the limiting mirror (4) is a wave plate or a lens, and one surface of the limiting mirror (4) in contact with the second mirror body (3) is a plane.
5. The polarization splitting prism assembly of claim 1, wherein:
still include mounting plate (7), be provided with L type limiting plate (5) on mounting plate (7), the opposite side of spacing mirror (4) with L type limiting plate (5) offset on one side, simultaneously the side of the first mirror body (1) with the another side of L type limiting plate (5) offsets.
6. The polarization splitting prism assembly of claim 5, wherein:
the root of the L-shaped limiting plate (5) of the mounting bottom plate (7) is provided with a root cutting groove (71).
7. The polarization splitting prism assembly of claim 5, wherein:
the tip on one side of L type limiting plate (5) is provided with grip block (6), one side of L type limiting plate (5) is less than or equal to the width of spacing mirror (4), two fix with screws are passed through to the one end of grip block (6) the tip of L type limiting plate (5), the other end of grip block (6) with spacing mirror (4) with first mirror body (1) offsets.
8. The polarization splitting prism assembly of claim 5, wherein:
the height of the L-shaped limiting plate (5) is less than or equal to the shortest side length of the first mirror body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022977870.8U CN213544970U (en) | 2020-12-09 | 2020-12-09 | Polarization beam splitting prism assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022977870.8U CN213544970U (en) | 2020-12-09 | 2020-12-09 | Polarization beam splitting prism assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213544970U true CN213544970U (en) | 2021-06-25 |
Family
ID=76486253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022977870.8U Expired - Fee Related CN213544970U (en) | 2020-12-09 | 2020-12-09 | Polarization beam splitting prism assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213544970U (en) |
-
2020
- 2020-12-09 CN CN202022977870.8U patent/CN213544970U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210625 |
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| CF01 | Termination of patent right due to non-payment of annual fee |