CN204719305U - The cemented prism of high reverse--bias extinction ratio - Google Patents
The cemented prism of high reverse--bias extinction ratio Download PDFInfo
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- CN204719305U CN204719305U CN201520440229.7U CN201520440229U CN204719305U CN 204719305 U CN204719305 U CN 204719305U CN 201520440229 U CN201520440229 U CN 201520440229U CN 204719305 U CN204719305 U CN 204719305U
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- prism
- cemented
- bias
- angle triangle
- dove
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Abstract
The utility model proposes the cemented prism of high reverse--bias extinction ratio, comprise right-angle triangle prism, parallelogram prism, reflective mirror and spectro-film, right-angle triangle prism composes Dove prism with parallel quadrant prism, right-angle triangle prism is provided with spectro-film with the cemented surface of parallel quadrant prism, on parallelogram prism, relative face parallel with cemented surface is provided with reflective mirror, the outside surface of Dove prism is frosting, the upper surface of Dove prism is provided with the entrance port of polishing, the lower surface two ends of Dove prism are respectively equipped with the first light exit and second light exit of polishing, first light exit is arranged on immediately below entrance port.The utility model outside surface is frosting, can reduce the loss of internal light, outside veiling glare can be prevented the interference of internal light simultaneously, improve irradiant quality after Dove prism; Reflective surface of the present utility model adopts reflective mirror, and reflection efficiency is high, and reflecting effect is good.
Description
Technical field
The utility model relates to cemented prism, particularly the cemented prism of high reverse--bias extinction ratio.
Background technology
Cemented prism is a kind of device often used in polarization light path, mainly plays the effect of polarization spectro, and in laser system, optical communication device and optical tests measurement instrument, the consumption such as display instrument industry has a wide range of applications.Traditional cemented prism is due to the restriction of production technology and technical conditions, and the inadequate precision of light deflection angle, reflective effect is low, and easily affect by veiling glare, therefore drop shadow effect is always unsatisfactory.
Utility model content
The utility model proposes the cemented prism of high reverse--bias extinction ratio, solving cemented prism in prior art easily affects the defect low with reflective effect by veiling glare.
The technical solution of the utility model is achieved in that
The cemented prism of high reverse--bias extinction ratio, comprise right-angle triangle prism, parallelogram prism, reflective mirror and spectro-film, right-angle triangle prism composes Dove prism with parallel quadrant prism, right-angle triangle prism is provided with spectro-film with the cemented surface of parallel quadrant prism, on parallelogram prism, relative face parallel with cemented surface is provided with reflective mirror, the outside surface of Dove prism is frosting, the upper surface of Dove prism is provided with the entrance port of polishing, the lower surface two ends of Dove prism are respectively equipped with the first light exit and second light exit of polishing, first light exit is arranged on immediately below entrance port, after light enters from entrance port, two bundles are divided into through spectro-film, a branch of along former direction after right-angle triangle prism from first light exit injection, another bundle is vertical with incident ray, inject parallelogram prism and penetrate from the second light exit after mirror reflection.
Further, described right-angle triangle prism is isosceles right triangle prism.
Further, described Dove prism is right-angled trapezium prism.
Further, described spectro-film is polarization beam splitter.
Further, the material of described right-angle triangle prism and described parallelogram prism is BK7 or BK4 glass.
Further, described reflective mirror is glued on parallelogram prism.
The beneficial effects of the utility model: the utility model outside surface is frosting, can reduce the loss of internal light, can prevent outside veiling glare to the interference of internal light simultaneously, improve irradiant quality after Dove prism; Reflective surface of the present utility model adopts reflective mirror, and reflection efficiency is high, and reflecting effect is good; The utility model adopts BK7 or BK4 glass action material, little on light impact, light deflection angle precision.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the perspective view of the cemented prism of the utility model high reverse--bias extinction ratio;
Fig. 2 is the main TV structure schematic diagram of Fig. 1;
Fig. 3 is the plan structure schematic diagram of Fig. 1;
Fig. 4 be Fig. 1 look up structural representation;
Fig. 5 is the index path of embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
With reference to Fig. 1-5, the cemented prism of high reverse--bias extinction ratio, comprise right-angle triangle prism 1, parallelogram prism 2, reflective mirror 3 and spectro-film 4, right-angle triangle prism 1 composes Dove prism 5 with parallel quadrant prism 2, right-angle triangle prism 1 is provided with spectro-film 4 with the cemented surface of parallel quadrant prism 2, on parallelogram prism 2, relative face parallel with cemented surface is provided with reflective mirror 3, the outside surface of Dove prism 5 is frosting 6, the upper surface of Dove prism 5 is provided with the entrance port 7 of polishing, the lower surface two ends of Dove prism 5 are respectively equipped with the first light exit 8 and the second light exit 9 of polishing, first light exit 8 is arranged on immediately below entrance port 7, after light enters from entrance port 7, two bundles are divided into through spectro-film 4, a branch ofly to penetrate from the first light exit 8 after right-angle triangle prism 1 along former direction, another bundle is vertical with incident ray, inject parallelogram prism 2 and penetrate from the second light exit 9 after reflective mirror 3 reflects.The utility model outside surface is frosting 6, can reduce the loss of internal light, outside veiling glare can be prevented the interference of internal light simultaneously, improve irradiant quality after Dove prism 5; Reflective surface of the present utility model adopts reflective mirror 3, and reflection efficiency is high, and reflecting effect is good.
In the present embodiment, described right-angle triangle prism 1 is isosceles right triangle prism.
In the present embodiment, described Dove prism 5 is right-angled trapezium prism.
In the present embodiment, described spectro-film 4 is polarization beam splitter.
In the present embodiment, the material of described right-angle triangle prism 1 and described parallelogram prism 2 is BK7 or BK4 glass.Adopt BK7 or BK4 glass action material, little on light impact, light deflection angle precision.
In the present embodiment, described reflective mirror 3 is glued on parallelogram prism 2.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. the cemented prism of high reverse--bias extinction ratio, it is characterized in that: comprise right-angle triangle prism, parallelogram prism, reflective mirror and spectro-film, right-angle triangle prism composes Dove prism with parallel quadrant prism, right-angle triangle prism is provided with spectro-film with the cemented surface of parallel quadrant prism, on parallelogram prism, relative face parallel with cemented surface is provided with reflective mirror, the outside surface of Dove prism is frosting, the upper surface of Dove prism is provided with the entrance port of polishing, the lower surface two ends of Dove prism are respectively equipped with the first light exit and second light exit of polishing, first light exit is arranged on immediately below entrance port, after light enters from entrance port, two bundles are divided into through spectro-film, a branch of along former direction after right-angle triangle prism from first light exit injection, another bundle is vertical with incident ray, inject parallelogram prism and penetrate from the second light exit after mirror reflection.
2. the cemented prism of high reverse--bias extinction ratio as claimed in claim 1, is characterized in that: described right-angle triangle prism is isosceles right triangle prism.
3. the cemented prism of high reverse--bias extinction ratio as claimed in claim 1, is characterized in that: described Dove prism is right-angled trapezium prism.
4. the cemented prism of high reverse--bias extinction ratio as claimed in claim 1, is characterized in that: described spectro-film is polarization beam splitter.
5. the cemented prism of high reverse--bias extinction ratio as claimed in claim 1, is characterized in that: the material of described right-angle triangle prism and described parallelogram prism is BK7 or BK4 glass.
6. the cemented prism of high reverse--bias extinction ratio as claimed in claim 1, is characterized in that: described reflective mirror is glued on parallelogram prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520440229.7U CN204719305U (en) | 2015-06-25 | 2015-06-25 | The cemented prism of high reverse--bias extinction ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520440229.7U CN204719305U (en) | 2015-06-25 | 2015-06-25 | The cemented prism of high reverse--bias extinction ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204719305U true CN204719305U (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520440229.7U Expired - Fee Related CN204719305U (en) | 2015-06-25 | 2015-06-25 | The cemented prism of high reverse--bias extinction ratio |
Country Status (1)
| Country | Link |
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| CN (1) | CN204719305U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572878A (en) * | 2016-02-03 | 2016-05-11 | 重庆矢崎仪表有限公司 | Display device for vehicle |
| CN109458948A (en) * | 2018-11-23 | 2019-03-12 | 中国科学院长春光学精密机械与物理研究所 | A kind of contiguous concatenation microscopy survey method and system |
-
2015
- 2015-06-25 CN CN201520440229.7U patent/CN204719305U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572878A (en) * | 2016-02-03 | 2016-05-11 | 重庆矢崎仪表有限公司 | Display device for vehicle |
| CN109458948A (en) * | 2018-11-23 | 2019-03-12 | 中国科学院长春光学精密机械与物理研究所 | A kind of contiguous concatenation microscopy survey method and system |
| CN109458948B (en) * | 2018-11-23 | 2021-05-18 | 中国科学院长春光学精密机械与物理研究所 | Method and system for detecting adjacent splicing mirrors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20190625 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |