CN202735671U - Black projection screen - Google Patents
Black projection screen Download PDFInfo
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- CN202735671U CN202735671U CN 201220260363 CN201220260363U CN202735671U CN 202735671 U CN202735671 U CN 202735671U CN 201220260363 CN201220260363 CN 201220260363 CN 201220260363 U CN201220260363 U CN 201220260363U CN 202735671 U CN202735671 U CN 202735671U
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Abstract
The utility model relates to the technical field of projection display, especially relates to a black projection screen. The black projection screen comprises the following components of: an optical thin film which is provided with a first surface and a second surface and is used for reflecting the light whose wavelength is in a primary color light wavelength range and transmitting the light whose wavelength is in other wavelength ranges in projection light, wherein the first surface and the second surface are opposite to each other; and a black light-absorbing layer which is arranged on the second surface and is used for absorbing light radiated thereon. The optical thin film formed by a plurality of reflective films which are different from each other. According to the black projection screen of the utility model, the black light-absorbing layer is arranged on the optical thin film such that the light whose wavelength is in the primary color light wavelength range in the projection light which is radiated on the black projection screen is totally reflected nearly, and most of the light in natural light which is radiated on the black projection screen is absorbed, thereby effectively improving the contrast and color reducibility of an image imaged on the black projection screen.
Description
Technical field
The utility model relates to the projection display technique field, particularly relates to a kind of black projection screen.
Background technology
Reflect the impact of the parasitic light that forms at the black projection screen owing to ambient light, so that contrast and the color reducibility of the projection ray's imaging on the existing black projection screen reduce greatly, affected the image projecting effect, so that the projection-type projector that particularly ambient light is had relatively high expectations, projection-type projector, projection-type televisor etc. can only use usually, limited the usable range of these projector equipments under the weak condition of ambient light.
Therefore be necessary to provide a kind of black projection screen to solve the problems of the technologies described above.
The utility model content
The utility model provides a kind of black projection screen, wherein, described black projection screen can make the light of the primary lights wavelength coverage in the projection ray of inciding on it almost by total reflection, and the most of light that incides in the available light on this black projection screen is absorbed, but contrast and the color reducibility of the imaging of Effective Raise black projection screen.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts provides a kind of black projection screen, comprise: optical thin film, described optical thin film has relative first surface and second surface, is used for the light of primary lights wavelength coverage of reflective projection light and the light of other wavelength coverage of transmission; The black light-absorbing layer, described black light-absorbing layer is arranged on the described second surface, is used for being absorbed into the light that is mapped on it; Wherein, described optical thin film is formed by the reflective multilayer film that differs from one another.
Wherein, 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.
Wherein, described smooth reflective multilayer film further comprises: the gold-tinted reflective membrane that reflects yellow light.
Wherein, described reflective multilayer film further comprises: 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 that is 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 the described black light-absorbing layer.
Wherein, described reflective multilayer film plates successively and is located on the described transparency carrier.
A kind of black projection screen that the utility model provides, by the black light-absorbing layer is set at optical thin film, so that the light that incides primary lights wavelength coverage in the projection ray on this black projection screen is almost by total reflection, and the most of light that incides in the available light on this black projection screen is absorbed, Effective Raise contrast and the color reducibility of black projection screen imaging, and then can enlarge the usable range of black projection screen.
Description of drawings
Fig. 1 is the structural representation of the first embodiment of black projection screen of the present utility model;
Fig. 2 is the synoptic diagram of a kind of structure of optical thin film 11 among Fig. 1;
Fig. 3 and Fig. 4 are the projection theory synoptic diagram that comprises the black projection screen 10 shown in Figure 1 of optical thin film 11 shown in Figure 2;
Fig. 5 is the structural representation of the second embodiment of black projection screen of the present utility model.
Embodiment
See also Fig. 1, Fig. 1 is the structural representation of the first embodiment of black projection screen of the present utility model.As shown in Figure 1, the black projection screen 10 of 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 that differs 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 used for being absorbed into the light that is mapped on it.
In the first embodiment of the present utility model, the setting of can fitting each other of described reflective multilayer film also can be plated successively and is located on the described black light-absorbing layer 12.Certainly in other embodiment of the present utility model, described reflective multilayer film also can have other set-up mode, and the utility model does not limit this.
See also Fig. 2, Fig. 2 is the synoptic diagram of a kind of structure of optical thin film 11 among 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, such as red bluish-green (RBG) pattern and Lan Hong green (BRG) pattern, this is given unnecessary details no longer one by one.
Optical thin film 11 among the first embodiment of the present utility model 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 among the first embodiment of the present utility model can further include the 4th reflective membrane (not shown) and the 5th reflective membrane (not shown), and wherein, the 4th reflective membrane is the gold-tinted reflective membrane, and the 5th reflective membrane is the 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 blue or green (RGBYC) pattern of red, green, blue and yellow and green reddish yellow ultramarine (GRYCB) pattern.
In embodiment of the present utility model, the ruddiness reflective membrane is used for reflection Red light, and the green glow reflective membrane is used for reflection green light, and the blue light reflective membrane is used for reflection blue light, and the gold-tinted reflective membrane is used for reflecting yellow light, and the green light reflective membrane is used for the reflection cyan ray.
In the first embodiment of the present utility model, the final multicolour pattern that forms 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 the projection ray, and then have determined the multicolour pattern of projection ray.After projection ray and available light incide black projection screen 10, optical thin film 11 is the light of primary colours light wavelength coverage and the light of other wavelength coverage of transmission in the reflective projection light optionally, wherein, the light through optical thin film 11 transmissions is absorbed by black light-absorbing layer 12.
See also Fig. 3 and Fig. 4, Fig. 3 and Fig. 4 are the projection theory synoptic diagram that comprises the black projection screen 10 shown in Figure 1 of optical thin film 11 shown in Figure 2.
For example, the projection ray of inciding on the 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, after optical thin film 11 was incided in projection ray, the red light of particular range of wavelengths was 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 the practical application: the ruddiness reflective membrane only reaches more than 95% the reflectivity of the red light (such as the red light of wavelength coverage at 635nm ± 10nm) of the particular range of wavelengths in the projection ray, and the transmitance of the light of other wavelength coverages is reached more than 95%; The green glow reflective membrane only to the reflectivity of the green light (such as the green light of wavelength coverage at 540nm ± 10nm) of the particular range of wavelengths in the projection ray up to more than 95%, and the transmitance of the light of other wavelength coverages is reached more than 95%; The blue light reflective membrane only to the reflectivity of the blue ray (such as the blue ray of wavelength coverage at 435nm ± 10nm) of the specific wavelength in the projection ray up to more than 95%, and the transmitance of other wavelength is reached more than 95%.
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 the black projection screen 10.Wherein, available light is that the light by continuous wavelength combines, the wavelength coverage of the primary colours light in the wavelength coverage of only having the small part available light and the projection ray is consistent, therefore only have the available light of small part through 10 reflections of black projection screen, and most light be transmitted after so that absorbed by black light-absorbing layer 12.
In conjunction with Fig. 3 and shown in Figure 4, the black projection screen 10 shown in Figure 1 that comprises the optical thin film 11 of structure shown in Figure 2, can effectively reduce ambient light to the impact of 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 enlarge the usable range of black projection screen of the present utility model.
Certainly, the projection theory of the black projection screen 10 of the optical thin film 11 that comprises other structures of the present utility model is similar with projection theory shown in Figure 4 to Fig. 3, does not repeat them here.
See also Fig. 5, Fig. 5 is the structural representation of the second embodiment of black projection screen of the present utility model.As shown in Figure 5, the difference of black projection screen 10 is among the black projection screen 20 of present embodiment and the first embodiment: 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 that is mapped on it.
In the second embodiment of the present utility model, reflective multilayer film can plate successively to be located on the described transparency carrier 23.Wherein, transparency carrier 23 can be flexible transparent substrate, can be rigid transparency carrier also, such as glass substrate.
By the way, a kind of black projection screen that the utility model provides, by the black light-absorbing layer is set at optical thin film, so that the light that incides primary colours light wavelength coverage in the projection ray on this black projection screen is almost by total reflection, and the most of light that incides in the available light on this black projection screen is absorbed, Effective Raise contrast and the color reducibility of black projection screen imaging, and then can enlarge the usable range of black projection screen.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (8)
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 the primary lights wavelength coverage of reflective projection light and the light of other wavelength coverage of transmission;
The black light-absorbing layer, described black light-absorbing layer is arranged on the described second surface, is used for being absorbed into the light that is mapped on it;
Wherein, described optical thin film is formed by the reflective multilayer film that differs from one another.
2. black projection screen according to claim 1 is characterized in that, 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.
3. black projection screen according to claim 2 is characterized in that, described reflective multilayer film further comprises: the gold-tinted reflective membrane that reflects yellow light.
4. black projection screen according to claim 3 is characterized in that, described reflective multilayer film further comprises: the green light reflective membrane of reflection cyan ray.
5. 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 that is mapped on it.
6. the described black projection screen of any one is characterized in that according to claim 1-5, the setting of fitting each other of described reflective multilayer film.
7. the described black projection screen of any one is characterized in that according to claim 1-5, and described reflective multilayer film plates successively to be located on the described black light-absorbing layer.
8. black projection screen according to claim 5 is characterized in that, described reflective multilayer film plates successively to be located on the described transparency carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220260363 CN202735671U (en) | 2012-06-04 | 2012-06-04 | Black projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220260363 CN202735671U (en) | 2012-06-04 | 2012-06-04 | Black projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202735671U true CN202735671U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220260363 Withdrawn - After Issue CN202735671U (en) | 2012-06-04 | 2012-06-04 | Black projection screen |
Country Status (1)
| Country | Link |
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| CN (1) | CN202735671U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102736390A (en) * | 2012-06-04 | 2012-10-17 | 深圳市亿思达显示科技有限公司 | Black projection screen |
| 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 |
| CN108732854A (en) * | 2018-04-20 | 2018-11-02 | 上海悉德信息科技有限公司 | Speculum and ultrashort projection reflection imaging system |
| CN108761974A (en) * | 2018-04-20 | 2018-11-06 | 上海悉德信息科技有限公司 | Multimedia projector formula optical projection system and subway multimedia system |
| CN111929975A (en) * | 2020-08-11 | 2020-11-13 | 成都菲斯特科技有限公司 | Optical projection screen and projection system |
-
2012
- 2012-06-04 CN CN 201220260363 patent/CN202735671U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102736390A (en) * | 2012-06-04 | 2012-10-17 | 深圳市亿思达显示科技有限公司 | Black projection screen |
| WO2013182018A1 (en) * | 2012-06-04 | 2013-12-12 | 深圳市亿思达显示科技有限公司 | Black projection screen |
| 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 |
| CN108732854A (en) * | 2018-04-20 | 2018-11-02 | 上海悉德信息科技有限公司 | Speculum and ultrashort projection reflection imaging system |
| CN108761974A (en) * | 2018-04-20 | 2018-11-06 | 上海悉德信息科技有限公司 | Multimedia projector formula optical projection system and subway multimedia system |
| CN108761974B (en) * | 2018-04-20 | 2021-03-16 | 上海悉德信息科技有限公司 | Multimedia reflective projection system and subway multimedia system |
| CN111929975A (en) * | 2020-08-11 | 2020-11-13 | 成都菲斯特科技有限公司 | Optical projection screen and projection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130213 Effective date of abandoning: 20140625 |
|
| RGAV | Abandon patent right to avoid regrant |