CN201917717U - Light machine projection display system and projection screen - Google Patents
Light machine projection display system and projection screen Download PDFInfo
- Publication number
- CN201917717U CN201917717U CN2010206422150U CN201020642215U CN201917717U CN 201917717 U CN201917717 U CN 201917717U CN 2010206422150 U CN2010206422150 U CN 2010206422150U CN 201020642215 U CN201020642215 U CN 201020642215U CN 201917717 U CN201917717 U CN 201917717U
- Authority
- CN
- China
- Prior art keywords
- projection
- light source
- brightness
- projection screen
- luminance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Projection Apparatus (AREA)
Abstract
The utility model belongs to the technical field of projection display and provides a light machine projection display system and a projection screen. The light machine projection display system comprises a projection light machine, the projection screen and a MCU (Microprogrammed Control Unit), wherein a plurality of photoconductive resistors are distributed on the projection screen and connected with the projection light machine through a sensor; and the MCU calculates and obtains brightness of a present environment and luminance of a light source needing to emit according to the luminance of the light source detected by a luminance control unit and the illuminance of the projection screen detected by the sensor and then feeds back the brightness of the present environment and the luminance of the light source to a luminance control unit for controlling, and is connected between the luminance control unit and the sensor. The light machine projection display system can automatically control luminance. When surrounding light is dim, the luminance is reduced, thereby saving electricity and preventing images from being greatly dazzling; and when the surrounding light is bright, the luminance is enhanced, thereby reducing the influence on a watching effect by the surrounding light to the best, so that a user can obtain the best visual enjoyment.
Description
Technical field
The utility model belongs to the projection display technique field, relates in particular to a kind of ray machine projection display system and projection screen.
Background technology
The application of ray machine shadow casting technique more and more widely, but its Projection Display effect is subjected to the influence of environmental light brightness easily, such as when surround lighting is dark, the too high spectators of the brightness of display screen can feel too dazzling, and when surround lighting was brighter, picture was clear inadequately again, can influence viewing effect equally.
The utility model content
The utility model provides a kind of ray machine projection display system, is intended to solve the problem that existing ray machine Projection Display effect is influenced by environmental light brightness easily.
The utility model is achieved in that a kind of ray machine projection display system, comprises projection ray machine and projection screen, is distributed with several photoresistance on the described projection screen, and described several photoresistance all are connected with described projection ray machine by sensor;
Described projection ray machine comprises: light source; Project the imaging system on the described projection screen behind the photoimaging that is connected with described light source, described light source is sent; Be connected, detect and control the brightness control unit of the brightness of described light source with described light source;
Described ray machine projection display system also comprises: according to the detected light-source brightness of described brightness control unit and described sensor to the illuminance of projection screen calculate and draw the brightness that current environmental light brightness and described light source needs send and feed back to the MCU that described brightness control unit is controlled, it is connected between described brightness control unit and the described sensor.
Further, described several photoresistance are hidden and are distributed on the described projection screen.
Further, described light source is a led light source.
The utility model also provides a kind of projection screen, is distributed with several photoresistance on the described projection screen.
Ray machine projection display system provided by the utility model can be controlled brightness automatically, reduces brightness when surround lighting is dark, can save electric weight and make the image can be too not dazzling; When environment bright, improve brightness, picture more clearly can be provided, reduce the influence of surround lighting as best one can, make the user obtain best visual enjoyment viewing effect.For making the photoresistance on the projection screen can not have influence on whole display effect, above-mentioned several photoresistance also can be set hide and to be distributed on the projection screen.
Description of drawings
Fig. 1 is the structure principle chart of the ray machine projection display system that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Among the utility model embodiment, by the light-source brightness of detection ray machine and the brightness of projection screen, comprehensively obtain current environmental light brightness according to the two, and further obtain the brightness that the light source of ray machine need send, thereby realize the display brightness of control projection screen automatically.
Fig. 1 shows the structural principle of the ray machine projection display system that the utility model embodiment provides, and for convenience of description, only shows the part relevant with present embodiment.
Please refer to Fig. 1, the ray machine projection display system that the utility model embodiment provides comprises projection screen 1, projection ray machine 2 and MCU 3, wherein be distributed with several photoresistance on the projection screen 1, these several photoresistance can reflect the illuminance that projection screen 1 receives in real time, these several photoresistance all by sensor with state projection ray machine 2 and be connected, as shown in Figure 1, projection ray machine 2 further comprises light source 21, the imaging system 22 that is connected with light source 21, the brightness control unit 23 that is connected with light source 21, wherein imaging system 22 is connected with light source 21, projects projection screen 1 behind the photoimaging that is used for light source 21 is sent; Brightness control unit 23 is used to detect and control the brightness of light source 21, for example can realize by the drive current of control light source; MCU 3 is connected between brightness control unit 23 and the sensor, MCU 3 be used for according to brightness control unit 23 detected light-source brightness and sensor to the illuminance that receives of projection screen calculate and draw the brightness that current environmental light brightness and light source 21 needs send, and feed back to brightness control unit 23 and control.
Further, can not have influence on whole display effect, above-mentioned several photoresistance can be set hide and to be distributed on the projection screen 1 for making the photoresistance on the projection screen.
Further, above-mentioned light source 21 specifically can adopt led light source, and projection screen 1 adopts common screen to get final product.
Adopting led light source with light source 21 below is the concrete course of work (also can adopt the light source of other types when being to be understood that concrete enforcement) that example is described above-mentioned ray machine projection display system:
1, projection ray machine 2 projection images are to projection screen 1, and the photoresistance on the projection screen 1 begins receiving optical signals, simultaneously luminance signal is fed back to sensor, and sends to MCU 3 by sensor.
2, at the same time, brightness control unit 23 calculates the projection brightness of current projection ray machine 2 and sends to MCU 3 by detecting the LED drive current.
3, MCU 3 carries out analytical calculation by the signal that above-mentioned steps 1,2 is received and draws current environmental light brightness, and, it is fed back to brightness control unit 23 according to pre-depositing its inner current environmental light brightness and needing the corresponding relation of projection brightness to calculate the projection brightness that projection ray machine 2 needs reach.
4, after brightness control unit 23 obtains the signal of MCU 3, strengthen or reduce the LED drive current, its brightness is increased or reduce according to program.
Flow process above repeating.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. a ray machine projection display system comprises projection ray machine and projection screen, it is characterized in that, is distributed with several photoresistance on the described projection screen, and described several photoresistance all are connected with described projection ray machine by sensor;
Described projection ray machine comprises: light source; Project the imaging system on the described projection screen behind the photoimaging that is connected with described light source, described light source is sent; Be connected, detect and control the brightness control unit of the brightness of described light source with described light source;
Described ray machine projection display system also comprises: according to the detected light-source brightness of described brightness control unit and described sensor to the illuminance of projection screen calculate and draw the brightness that current environmental light brightness and described light source needs send and feed back to the MCU that described brightness control unit is controlled, it is connected between described brightness control unit and the described sensor.
2. ray machine projection display system as claimed in claim 1 is characterized in that, described several photoresistance are hidden and are distributed on the described projection screen.
3. ray machine projection display system as claimed in claim 1 is characterized in that, described light source is a led light source.
4. a projection screen is characterized in that, is distributed with several photoresistance on the described projection screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206422150U CN201917717U (en) | 2010-12-03 | 2010-12-03 | Light machine projection display system and projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206422150U CN201917717U (en) | 2010-12-03 | 2010-12-03 | Light machine projection display system and projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201917717U true CN201917717U (en) | 2011-08-03 |
Family
ID=44417511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206422150U Expired - Lifetime CN201917717U (en) | 2010-12-03 | 2010-12-03 | Light machine projection display system and projection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201917717U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104011623A (en) * | 2011-12-23 | 2014-08-27 | 英特尔公司 | A method, apparatus, and system for energy efficiency and energy conservation including dynamic user interface based on viewing conditions |
| CN104360567A (en) * | 2014-10-11 | 2015-02-18 | 苏州合欣美电子科技有限公司 | Projection brightness adjustment method of adaptive projection system |
| CN104765233A (en) * | 2015-03-16 | 2015-07-08 | 浙江工业大学 | Screen visible-light-track tracking projection system |
| CN107168001A (en) * | 2017-07-20 | 2017-09-15 | 京东方科技集团股份有限公司 | Curtain, optical projection system and focus adjustment method |
-
2010
- 2010-12-03 CN CN2010206422150U patent/CN201917717U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104011623A (en) * | 2011-12-23 | 2014-08-27 | 英特尔公司 | A method, apparatus, and system for energy efficiency and energy conservation including dynamic user interface based on viewing conditions |
| CN104360567A (en) * | 2014-10-11 | 2015-02-18 | 苏州合欣美电子科技有限公司 | Projection brightness adjustment method of adaptive projection system |
| CN104765233A (en) * | 2015-03-16 | 2015-07-08 | 浙江工业大学 | Screen visible-light-track tracking projection system |
| CN107168001A (en) * | 2017-07-20 | 2017-09-15 | 京东方科技集团股份有限公司 | Curtain, optical projection system and focus adjustment method |
| CN107168001B (en) * | 2017-07-20 | 2019-11-19 | 京东方科技集团股份有限公司 | Curtain, optical projection system and focus adjustment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20120182276A1 (en) | Automatic adjustment of display systems based on light at viewer position | |
| CN201917717U (en) | Light machine projection display system and projection screen | |
| CN103996392A (en) | Screen brightness adjusting method and circuit and display device | |
| US9826603B2 (en) | Configuration of ambient light using wireless connection | |
| CN105118407B (en) | A kind of electronic product and its LOGO display methods, system | |
| EP1981015A3 (en) | Display apparatus and method for adjusting brightness thereof | |
| TW200746004A (en) | Indicator device with multiple pixel and process to display images | |
| CN104349098B (en) | Projection device and brightness control method of projection picture thereof | |
| CN205487285U (en) | A adjustting of lighteness system and LED display screen for LED display screen | |
| CN202120235U (en) | Multipoint light gun control device based on liquid crystal display (LCD) and projectors | |
| CN102402970A (en) | Method and device for adjusting contrast of display screen | |
| CN104501107A (en) | Device for automatically adjusting indoor lighting according to television screen brightness | |
| CN105101558A (en) | Wall-mounted display apparatus and control method thereof | |
| WO2011098654A1 (en) | Interactive display | |
| CN102088630A (en) | System and method for changing visual effect of digital television | |
| CN204155593U (en) | Display panel detection device and detection system | |
| CN104217698A (en) | Display panel detection device, detection system and detection method | |
| CN102072766B (en) | Device and method for detecting brightness decay degree of bulb of projector | |
| TW200504657A (en) | Image signal processing apparatus and displaying method | |
| CN103531134A (en) | Array light projection device with adjustable images | |
| CN105187124A (en) | Information transmission method and device based on backlight modulation | |
| CN203279078U (en) | Automatic detection device for production of television board | |
| WO2014135901A1 (en) | High dynamic range imaging systems | |
| CN104269126A (en) | Outdoor gallery interactive floor device | |
| CN203897689U (en) | Exhibition stand capable of automatically adjusting light intensity of supplementary lighting lamps |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |