CN102736390B - Black projection screen - Google Patents
Black projection screen Download PDFInfo
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- CN102736390B CN102736390B CN201210180982.8A CN201210180982A CN102736390B CN 102736390 B CN102736390 B CN 102736390B CN 201210180982 A CN201210180982 A CN 201210180982A CN 102736390 B CN102736390 B CN 102736390B
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- light
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- projection screen
- reflective membrane
- reflective
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- 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
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
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- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention relates to the technical field of projection display, and in particular relates to a black projection screen. The black projection screen comprises an optical film and a black light absorption layer, wherein the optical film comprises a first surface and a second surface which are opposite to each other and is used for reflecting light rays in a primary light wavelength range in projected light rays and transmitting light rays in other wavelength ranges; the black light absorption layer is arranged on the second surface and is used for absorbing light rays incident to the second surface; and the optical film consists of multi-layer reflecting films which are different from each other. Due to the mode, according to the black projection screen, the black light absorption layer is arranged on the optical film, so that the light rays in the primary light wavelength range in the projected light rays incident to the black projection screen are almost totally reflected, most of the light rays entering natural light rays on the black projection screen are absorbed, and the imaging contrast and color reducibility of the black projection screen can be effectively improved.
Description
Technical field
The present invention relates to projection display technique field, particularly relate to a kind of black projection screen.
Background technology
The impact of reflecting the parasitic light forming due to ambient light on black projection screen, contrast and the color reducibility of the projection ray's imaging on existing black projection screen are reduced greatly, affect image projecting effect, the projection-type projector that makes particularly ambient light to be had relatively high expectations, projection-type projector, projection-type televisor etc. can only use conventionally under the weak condition of ambient light, have limited the usable range of these projector equipments.
Therefore be necessary to provide a kind of black projection screen to solve the problems of the technologies described above.
Summary of the invention
The invention provides a kind of black projection screen, wherein, the light that described black projection screen can make to incide the primary lights wavelength coverage in the projection ray on it is almost totally reflected, and the most of light inciding in the available light on this black projection screen is absorbed, can effectively improve contrast and the color reducibility of black projection screen imaging.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is to provide a kind of black projection screen, comprise: optical thin film, described optical thin film has relative first surface and second surface, for the light of primary lights wavelength coverage and the light of other wavelength coverage of transmission of reflective projection light; Black light-absorbing layer, described black light-absorbing layer is arranged on described second surface, for being absorbed into the light being mapped on it; Wherein, described optical thin film is formed by the reflective multilayer film differing from one another; Described reflective multilayer film comprises: the blue light reflective membrane of the ruddiness reflective membrane of reflection Red light, the green glow reflective membrane of reflection green light and reflection blue light; Described smooth reflective multilayer film further comprises: reflect the gold-tinted reflective membrane of yellow light, the green light reflective membrane of reflection cyan ray.
Wherein, described black projection screen further comprises: transparency carrier, be arranged on the first surface of described optical thin film, and described transparency carrier is transmitted into the light being mapped on it.
Wherein, the described reflective multilayer film setting of fitting each other.
Wherein, described reflective multilayer film plates successively and is located on described black light-absorbing layer.
Wherein, described reflective multilayer film plates successively and is located on described transparency carrier.
A kind of black projection screen provided by the invention, by black light-absorbing layer is set on optical thin film, the light that incides primary lights wavelength coverage in the projection ray on this black projection screen is almost totally reflected, and the most of light inciding in the available light on this black projection screen is absorbed, effectively improve contrast and the color reducibility of the imaging of black projection screen, and then can expand the usable range of black projection screen.
Brief description of the drawings
Fig. 1 is the structural representation of the first embodiment of black projection screen of the present invention;
Fig. 2 is the schematic diagram of a kind of structure of optical thin film 11 in Fig. 1;
Fig. 3 and Fig. 4 are the projection theory schematic diagram of the black projection screen 10 shown in the Fig. 1 that comprises optical thin film 11 shown in Fig. 2;
Fig. 5 is the structural representation of the second embodiment of black projection screen of the present invention.
Embodiment
Refer to Fig. 1, Fig. 1 is the structural representation of the first embodiment of black projection screen of the present invention.As shown in Figure 1, the black projection screen 10 of the present embodiment comprises optical thin film 11 and black light-absorbing layer 12.Optical thin film 11 has relative first surface and second surface, and wherein, described first surface is towards the incident direction of projection ray.This optical thin film 11 is for the light of the primary lights wavelength coverage of reflective projection light and the light of other wavelength coverage of transmission, and optical thin film 11 is formed by the reflective multilayer film differing from one another.Black light-absorbing layer 12 is arranged on the second surface of optical thin film 11, and black light-absorbing layer 12 is for being absorbed into the light being mapped on it.
In the first embodiment of the present invention, the setting of can fitting each other of described reflective multilayer film, also can plate successively and be located on described black light-absorbing layer 12.Certainly in other embodiments of the invention, described reflective multilayer film also can have other set-up mode, and the present invention does not limit this.
Refer to Fig. 2, Fig. 2 is the schematic diagram of a kind of structure of optical thin film 11 in Fig. 1.As shown in Figure 2, optical thin film 11 comprises the first reflective membrane (not indicating), the second reflective membrane (not indicating) and the 3rd reflective membrane (not indicating).Wherein, observe along the incident direction of projection ray, the first reflective membrane is that ruddiness reflective membrane 111, the second reflective membrane are that green glow reflective membrane 112 and the 3rd reflective membrane are blue light reflective membranes 113.Certainly, incident direction along projection ray is observed, the first reflective membrane, the second reflective membrane and the 3rd reflective membrane are except RGB (RGB) pattern, it can also be the combination in any pattern of ruddiness reflective membrane, green glow reflective membrane and blue light reflective membrane, as red bluish-green (RBG) pattern and Lan Hong green (BRG) pattern, this is repeated no longer one by one.
Optical thin film 11 in the first embodiment of the present invention can further include the 4th reflective membrane (not shown), and the 4th reflective membrane is gold-tinted reflective membrane (not shown).Correspondingly, incident direction along projection ray is observed, the integrated mode of described the first reflective membrane, the second reflective membrane, the 3rd reflective membrane and the 4th luminescent film is the combination in any pattern of ruddiness reflective membrane 111, green glow reflective membrane 112, blue light reflective membrane 113 and gold-tinted reflective membrane, for example red, green, blue and yellow (RGBY) pattern and reddish yellow bluish-green (RYBG) pattern.
Optical thin film 11 in the first embodiment of the present invention can further include the 4th reflective membrane (not shown) and the 5th reflective membrane (not shown), and wherein, the 4th reflective membrane is gold-tinted reflective membrane, and the 5th reflective membrane is green light reflective membrane.Correspondingly, incident direction along projection ray is observed, the integrated mode of described the first reflective membrane, the second reflective membrane, the 3rd reflective membrane, the 4th luminescent film and the 5th reflective membrane is the combination in any pattern of ruddiness reflective membrane 111, green glow reflective membrane 112, blue light reflective membrane 113, gold-tinted reflective membrane and green light reflective membrane, for example red, green, blue and yellow green grass or young crops (RGBYC) pattern and green reddish yellow ultramarine (GRYCB) pattern.
In an embodiment of the present invention, ruddiness reflective membrane is for reflection Red light, and green glow reflective membrane is for reflection green light, and blue light reflective membrane is for reflection blue light, and gold-tinted reflective membrane is used for reflecting yellow light, and green light reflective membrane is used for reflecting cyan ray.
In the first embodiment of the present invention, the final multicolour pattern forming of projection ray is determined by the primary colours light combination of specific wavelength, for example, during laser projection shows, LASER Light Source and fluorescence colour wheel etc. have determined the primary colours light of the particular range of wavelengths in projection ray, and then have determined the multicolour pattern of projection ray.Incide after black projection screen 10 in projection ray and available light, optical thin film 11 is the light of primary colours light wavelength coverage and the light of other wavelength coverage of transmission in reflective projection light optionally, wherein, absorbed by black light-absorbing layer 12 through the light of optical thin film 11 transmissions.
Refer to Fig. 3 and Fig. 4, Fig. 3 and Fig. 4 are the projection theory schematic diagram of the black projection screen 10 shown in the Fig. 1 that comprises optical thin film 11 shown in Fig. 2.
For example, the projection ray of inciding on black projection screen 30 is these three kinds of colored light that primary lights form after colour mixture of ruddiness, green glow and blue light.As shown in Figure 3, projection ray is incided after optical thin film 11, and the red light of particular range of wavelengths is almost by the total reflection of ruddiness reflective membrane, and the light of other wavelength enters lower one deck reflective membrane; The green light of particular range of wavelengths is by the almost total reflection of green glow reflective membrane, and the blue ray of remaining specific wavelength is almost entirely by the total reflection of blue light reflective membrane.Therefore incide the projection ray of black projection screen 10 almost by the total reflection of RGB reflective membrane.
In practical application: the ruddiness reflective membrane only reflectivity of the red light (if wavelength coverage is at the red light of 635nm ± 10nm) to the particular range of wavelengths in projection ray reaches more than 95%, and the transmitance of light to other wavelength coverages reaches more than 95%; Only the reflectivity of the green light (if wavelength coverage is at the green light of 540nm ± 10nm) to the particular range of wavelengths in projection ray is up to more than 95% for green glow reflective membrane, and the transmitance of light to other wavelength coverages reaches more than 95%; The blue light reflective membrane only reflectivity of the blue ray (if wavelength coverage is at the blue ray of 435nm ± 10nm) to the specific wavelength in projection ray, up to more than 95%, and reaches more than 95% the transmitance of other wavelength.
As shown in Figure 4, when optical thin film 11 is incided in projection ray, also there is available light (ambient light) to incide on black projection screen 10.Wherein, available light is to be combined by the light of continuous wavelength, only have the wavelength coverage of small part available light consistent with the wavelength coverage of the primary colours light in projection ray, therefore only have the available light of small part to reflect through black projection screen 10, and most light is transmitted rear and then is absorbed by black light-absorbing layer 12.
Shown in Fig. 3 and Fig. 4, black projection screen 10 shown in Fig. 1 of the optical thin film 11 that comprises the structure shown in Fig. 2, can effectively reduce the impact of ambient light on projection ray, and then can improve contrast, color reducibility and the projection viewing effect of the imaging of black projection screen 10, and then can expand the usable range of black projection screen of the present invention.
Certainly, the projection theory of the black projection screen 10 of the optical thin film that comprises other structures 11 of the present invention is similar with the projection theory shown in Fig. 4 to Fig. 3, does not repeat them here.
Refer to Fig. 5, Fig. 5 is the structural representation of the second embodiment of black projection screen of the present invention.As shown in Figure 5, in the black projection screen 20 of the present embodiment and the first embodiment, the difference of black projection screen 10 is: black projection screen 20 further comprises transparency carrier 23, wherein, transparency carrier 23 is arranged on the first surface of optical thin film 21, and described transparency carrier 23 is transmitted into the light being mapped on it.
In the second embodiment of the present invention, reflective multilayer film can plate to be successively located on described transparency carrier 23.Wherein, transparency carrier 23 can be flexible transparent substrate, can be also rigid transparency carrier, as glass substrate.
By the way, a kind of black projection screen provided by the invention, by black light-absorbing layer is set on optical thin film, the light that incides primary colours light wavelength coverage in the projection ray on this black projection screen is almost totally reflected, and the most of light inciding in the available light on this black projection screen is absorbed, effectively improve contrast and the color reducibility of the imaging of black projection screen, and then can expand the usable range of black projection screen.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. a black projection screen, is characterized in that, described black projection screen comprises:
Optical thin film, described optical thin film has relative first surface and second surface, and described optical thin film is for the light of primary lights wavelength coverage and the light of other wavelength coverage of transmission of reflective projection light;
Black light-absorbing layer, described black light-absorbing layer is arranged on described second surface, for being absorbed into the light being mapped on it;
Wherein, described optical thin film is formed by the reflective multilayer film differing from one another;
Described reflective multilayer film comprises: the blue light reflective membrane of the ruddiness reflective membrane of reflection Red light, the green glow reflective membrane of reflection green light and reflection blue light;
Described reflective multilayer film further comprises: reflect the gold-tinted reflective membrane of yellow light, the green light reflective membrane of reflection cyan ray.
2. black projection screen according to claim 1, is characterized in that, described black projection screen further comprises: transparency carrier, be arranged on the first surface of described optical thin film, and described transparency carrier is transmitted into the light being mapped on it.
3. according to the black projection screen described in claim 1-2 any one, it is characterized in that the setting of fitting each other of described reflective multilayer film.
4. according to the black projection screen described in claim 1-2 any one, it is characterized in that, described reflective multilayer film plates to be successively located on described black light-absorbing layer.
5. black projection screen according to claim 2, is characterized in that, described reflective multilayer film plates to be successively located on described transparency carrier.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180982.8A CN102736390B (en) | 2012-06-04 | 2012-06-04 | Black projection screen |
| PCT/CN2013/076625 WO2013182018A1 (en) | 2012-06-04 | 2013-06-03 | Black projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180982.8A CN102736390B (en) | 2012-06-04 | 2012-06-04 | Black projection screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102736390A CN102736390A (en) | 2012-10-17 |
| CN102736390B true CN102736390B (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210180982.8A Active CN102736390B (en) | 2012-06-04 | 2012-06-04 | Black projection screen |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102736390B (en) |
| WO (1) | WO2013182018A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102736390B (en) * | 2012-06-04 | 2014-06-25 | 深圳市亿思达显示科技有限公司 | Black projection screen |
| CN104714360A (en) * | 2013-12-16 | 2015-06-17 | 深圳市亿思达科技集团有限公司 | Multi-layer combination reflection-type projection screen |
| CN107077059A (en) | 2014-07-22 | 2017-08-18 | 巴科公司 | Using the display system and method for reflection of polarization screen |
| EP3172614A4 (en) | 2014-07-22 | 2018-01-17 | Barco Inc. | Display systems and methods employing wavelength multiplexing of colors |
| CN107003596A (en) | 2014-07-22 | 2017-08-01 | 巴科公司 | Utilize the time-multiplexed display system and method for projection screen and projecting apparatus |
| CN107111181A (en) | 2014-10-27 | 2017-08-29 | 巴科公司 | Using the display system and method for the screen with lenticule or the array of micro mirror |
| CN104656352B (en) * | 2015-03-18 | 2016-08-10 | 达靖虹 | Wafer assemblies and imaging system and wafer assemblies manufacture method |
| CN104965386A (en) * | 2015-07-13 | 2015-10-07 | 南京先进激光技术研究院 | Projection display equipment with multilayer reflecting thin-films |
| CN109960102B (en) * | 2017-12-14 | 2022-01-04 | 深圳光峰科技股份有限公司 | Projection screen |
| CN107991837B (en) * | 2018-01-30 | 2020-05-05 | 上海理工大学 | Curtain for enhancing projection brightness and contrast based on total reflection and manufacturing method thereof |
| CN112558397A (en) * | 2019-09-10 | 2021-03-26 | 青岛海信激光显示股份有限公司 | Display screen |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07261274A (en) * | 1994-03-24 | 1995-10-13 | Seiko Instr Inc | Projection screen |
| JP3758358B2 (en) * | 1998-04-13 | 2006-03-22 | 日本ビクター株式会社 | Projection screen and projection display device |
| CN100573312C (en) * | 2001-12-13 | 2009-12-23 | 索尼公司 | The manufacture method of screen, screen and image display system |
| US6769774B2 (en) * | 2002-11-14 | 2004-08-03 | International Business Machines Corporation | Ambient light tolerant image projection method and system |
| US7123409B2 (en) * | 2003-08-04 | 2006-10-17 | Dai Nippon Printing Co., Ltd. | Projection screen and projection system comprising the same |
| US20070097509A1 (en) * | 2005-10-31 | 2007-05-03 | Nevitt Timothy J | Optical elements for high contrast applications |
| CN101270237A (en) * | 2007-03-19 | 2008-09-24 | 尹光中 | Smoke stone photo-development coating material for preparing film screen and preparation method thereof |
| TWI464523B (en) * | 2010-05-17 | 2014-12-11 | Hon Hai Prec Ind Co Ltd | Projection screen, method of making same, and projection system using same |
| CN202735671U (en) * | 2012-06-04 | 2013-02-13 | 深圳市亿思达显示科技有限公司 | Black projection screen |
| CN102736390B (en) * | 2012-06-04 | 2014-06-25 | 深圳市亿思达显示科技有限公司 | Black projection screen |
-
2012
- 2012-06-04 CN CN201210180982.8A patent/CN102736390B/en active Active
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2013
- 2013-06-03 WO PCT/CN2013/076625 patent/WO2013182018A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| CN102736390A (en) | 2012-10-17 |
| WO2013182018A1 (en) | 2013-12-12 |
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Owner name: SHENZHEN YISIDA TECHNOLOGY GROUP CO., LTD. Free format text: FORMER NAME: SHENZHEN ESTA DISPLAY TECHNOLOGY CO., LTD. |
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Address after: 518000 Shenzhen, Nanshan District, China Hi Tech in the world, the world's 806 digital building, room three Patentee after: SHENZHEN ESTAR DISPLAYTECH CO., LTD. Address before: 518000, District, Shenzhen, Nanshan District high tech Zone, Southern District, B1 digital technology park, building 2, C Patentee before: Shenzhen Esta Display Technology Co., Ltd. |
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Effective date of registration: 20170927 Address after: 11 No. 364300 Longyan city in Fujian province Wuping County Industrial Park Industrial Avenue Patentee after: Fujian science and Technology Co., Inc Address before: 518000 Shenzhen, Nanshan District, China Hi Tech in the world, the world's 806 digital building, room three Patentee before: SHENZHEN ESTAR DISPLAYTECH CO., LTD. |