CN102073203A - Projection device and method capable of automatically adjusting projection brightness - Google Patents
Projection device and method capable of automatically adjusting projection brightness Download PDFInfo
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- CN102073203A CN102073203A CN2010105477930A CN201010547793A CN102073203A CN 102073203 A CN102073203 A CN 102073203A CN 2010105477930 A CN2010105477930 A CN 2010105477930A CN 201010547793 A CN201010547793 A CN 201010547793A CN 102073203 A CN102073203 A CN 102073203A
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- light
- light source
- projection
- projection arrangement
- brightness
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Abstract
The invention provides a projection device and a projection method capable of automatically adjusting projection brightness. The projection device comprises a light source, a power supply, a polarization beam splitter, a lens module, a light ray detection unit, a power supply controller and an image display, wherein the polarization beam splitter receives light rays projected by the light source, reflects a part of light rays to the image display and transmits the remaining light rays; the image display receives light rays reflected by the polarization beam splitter and projects a picture irradiated by the light rays onto the lens module; the light ray detection unit detects a digital value corresponding to reflected light rays which are not received by the image display and come from the polarization beam splitter, compares the digital value with a preset value and generates a control signal according to a comparison result; and the power controller is used for controlling the power supply to adjust the brightness of the light source according to the control signal until the digital value corresponding to the light rays projected by the light source is up to a preset value. Due to the adoption of the projection device and the projection method, the projection brightness of the projection device can be adjusted under the condition that effective light rays of the light source are not consumed.
Description
Technical field
The present invention relates to a kind of projection arrangement and method with automatic adjustment projection brightness function.
Background technology
Under the prior art, solution at projector projection brightness problem all is to utilize in the projector projection process, obtains the part effective sunlight that light source sends, and handles at this effective sunlight, adjust the brightness of light source according to the result who handles, thereby improve the problem of projector projection brightness.Yet, obtain the part effective sunlight of light source, can directly cause the loss of luminous energy, thus the projection brightness of remote effect projector.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of projection arrangement and method with automatic adjustment projection brightness function, adjusts the projection brightness of projection arrangement by the light of sensing inactive area, thereby addresses the above problem.
The invention provides a kind of projection arrangement with automatic adjustment projection brightness function, this projection arrangement includes light source, power supply, camera lens module, video display, and this power supply is used for powering to light source; This camera lens module is used for the image that projection image's display is provided, and this projection arrangement also comprises: polarization spectroscope be used to receive the light that light source projects is come, and reflecting part light reaches the transmission residual ray to video display; This polarization spectroscope also is used for the light that video display reflects back is transmitted through the camera lens module; The light detecting unit is used for the digit value of the light correspondence that comes from the polarization spectro mirror reflection that the detecting image display do not receive, and with itself and a preset value relatively, produces a control signal according to comparative result; Power-supply controller of electric is used for adjusting according to this control signal control power supply the brightness of light source, and the digit value of the light correspondence in coming from light source reaches preset value.
The present invention also provides a kind of projection arrangement with automatic adjustment projection brightness function, this projection arrangement includes three light sources, power supply, three video displays and camera lens module, this power supply is used for powering to three light sources respectively, this projection arrangement also comprises: three polarization spectroscopes, be used for receiving respectively the light that light source projects is come, and reflecting part light reaches the transmission residual ray to video display; These three polarization spectroscopes, the light that also is used for respectively three video displays being reflected back is transmitted through the camera lens module; The light detecting unit is used for detecting respectively the digit value of the light correspondence that comes from three polarization spectro mirror reflections that three video displays do not receive, and with itself and corresponding preset value relatively, produces corresponding control signal according to comparative result; Power-supply controller of electric is used for adjusting corresponding light-source brightness according to the corresponding power supply of control signal control of correspondence respectively, and the digit value of the light correspondence in coming from corresponding light source reaches preset value respectively.
The method that the present invention also provides a kind of projection arrangement to adjust projection brightness automatically, this method may further comprise the steps: by light source projects light to one polarization spectroscope; By polarization spectroscope reflecting part light to one video display, and the transmission residual ray; Detect the digit value of the light correspondence that comes from the polarization spectro mirror reflection that this video display do not receive, and with itself and a preset value relatively, produce a control signal according to comparative result; Control the brightness that power supply is adjusted light source by light source controller according to this control signal, the digit value of the light correspondence in coming from light source reaches preset value.
Electronic installation and method with automatic adjustment projection brightness function of the present invention do not reflex to light on the video display by optical sensor sensing polarization spectroscope, comes the projection brightness of projection arrangement is adjusted, thereby avoids the loss effective sunlight.
Description of drawings
Fig. 1 is the projection arrangement synoptic diagram with automatic adjustment projection brightness function of the present invention;
Fig. 2 is another synoptic diagram with projection arrangement of automatic adjustment projection brightness function of the present invention;
Fig. 3 is the method flow diagram that projection arrangement of the present invention is adjusted projection brightness automatically.
The main element symbol description
| Projection arrangement | 1，1a |
| The |
101 |
| Control die |
80 |
| The |
70 |
| Simulation/ |
81 |
| Comparer | 82 |
| |
71 |
| Wave filter | 72 |
| |
60 |
| |
30 |
| |
40 |
| Power-supply controller of electric | 90 |
| |
20 |
| |
10 |
| The |
50 |
| Video display 1 | 40a |
| Video display 2 | 40b |
| Video display 3 | 40c |
| Optical sensor 1 | 60a |
| Optical sensor 2 | 60b |
| Optical sensor 3 | 60c |
| Close optical element | 100 |
| Light source 1 | 10a |
| Light source 2 | 10b |
| Light source 3 | 10c |
Embodiment
As shown in Figure 1, for having the projection arrangement 1 of automatic adjustment projection brightness function, this projection arrangement 1 comprises a light source 10, a power supply 20, a power-supply controller of electric 90, a polarization spectroscope 30, a video display 40, a light detecting unit 101 and a camera lens module 50.
This light source 10 is used for to polarization spectroscope 30 throw lights.In the present embodiment, this light source 10 can be the LED white light source, LED rgb light source, or the light source of brightness-adjusting such as incandescent lamp bulb.In other embodiments, this light source 10 also can be various light sources such as light emitting diode or laser diode.
This power supply 20 is used for powering by 90 pairs of light sources 10 of power-supply controller of electric, and is luminous with control light source 10.In the present embodiment, power supply 20 can cause the brightness difference of the light that light source sends through the voltage of power-supply controller of electric 90 output or power difference.
This polarization spectroscope 30 is used for reflecting part light to video display 40 and transmission residual ray.This video display 40 is used for display image, and the light reflection that polarization spectroscope 30 reflects back is transmitted through camera lens module 50 behind polarization spectroscope 30.Yet, when the part light that polarization spectroscope 30 is throwed light source 10 reflexes to video display 40, because the area coverage of the light that polarization spectroscope 30 is reflected generally can be less times greater than the area of video display 40, so can cause having sub-fraction light not to be reflected onto on the video display 40.
This light detecting unit 101 is used to detect the digit value of the light correspondence that comes from polarization spectroscope 30 reflections that this video display 40 do not receive, and this digit value and a preset value are compared, and produces a control signal according to comparative result.
In the present embodiment, this light detecting unit 101 comprises an optical sensor 60, a signal Processing module 70 and a control die set 80.This optical sensor 60 is used for the light that comes from polarization spectroscope 30 reflections that this video display 40 of sensing does not receive, and produces a sensing signal.In the present embodiment, this optical sensor 60 is micro electronmechanical projection arrangement (MEMS, a MicroElectro Mechanical System) optical sensor.
This signal Processing module 70 comprises an amplifier 71 and a wave filter 72.This amplifier 71 is used for the sensing signal that optical sensor 60 is produced is amplified.This wave filter 72 is used for the sensing signal after amplifying is filtered generation one simulating signal.
This control die set 80 comprises a simulation/digital converter 81 and comparer 82.The analog signal conversion that this simulation/digital converter 81 is used for wave filter 72 is produced is a numerical digit signal.This comparer 82 compares this a numerical digit signal and a preset value, produces this control signal according to result relatively.
This power-supply controller of electric 90 is used for the control signal that produced according to this light detecting unit 101 to be adjusted the power or the voltage of power supply 20 and waits the irradiation brightness of adjusting light source 10, and the digit value of the light correspondence of sending until light source 10 reaches preset value.In the present embodiment, this power-supply controller of electric 90 can be provided with some periodic pulse signals according to width modulation (PWM, Pulse-Width Modulation) and control power supply 20 unlatchings or close light source 10, thus the brightness of the light that control light source 10 is sent.In other embodiments, this power-supply controller of electric 90 also can adopt the mode of stepless light modulation to adjust the intensity of the light that light source 10 sent.
As shown in Figure 2, in another embodiment of the present invention, this projection arrangement 1a includes three light source 10a, 10b, 10c, three video display 40a, 40b, 40c and closes optical element 100.These three video display 40a, 40b, 40c show same image.In the present embodiment, these three light source 10a, 10b, 10c are respectively red light source, green light source and blue-light source.These three light source 10a, 10b, 10c are respectively directly to three video display 40a, 40b, 40c throw light.This closes optical element 100 and is used for three video display 40a, 40b, 40c are passed the image frame integrator of three polarization spectroscope 30a, 30b, 30c projection respectively to camera lens module 50.This light detecting unit 101 comprises three optical sensor 60a, 60b, 60c be used for sensing three video display 40a, 40b, 40c respectively next self-corresponding polarization spectroscope 30a that does not receive, the light of 30b, 30c, produces a sensing signal respectively.This signal Processing module 70 amplifies these three sensing signals respectively and filters, and produces simulating signal.This control die set 80 is the numerical digit signal with this analog signal conversion, and respectively these three numerical digit signals and preset value is compared, and produces three control signals according to result relatively.This power-supply controller of electric 90 waits the irradiation brightness of adjusting three light source 10a, 10b, 10c according to the power or the voltage of three control signals adjustment power supplys 20 respectively, and the digit value of the light correspondence in coming from light source 10a, 10b, 10c reaches preset value.In other embodiments, this projection 1a also can include only a video display 40.
As shown in Figure 3, adjust the method flow diagram of projection brightness automatically for projection arrangement of the present invention.
These light source 10 throw lights are to polarization spectroscope 30 (step S701).
These polarization spectroscope 30 reflecting part light are to video display 40 and transmission residual ray (step S702).
This this video display 40 of light detecting unit 101 sensings does not receive comes from the digit value of the light correspondence of polarization spectroscope 30 reflections, and this digit value and a preset value are compared, and produces a control signal (step S703) according to comparative result.
Power or voltage that this power-supply controller of electric 90 is adjusted power supply 20 according to this control signal wait the irradiation brightness of adjusting light source 10, and the digit value of the light correspondence that projects until light source 10 reaches preset value (step S704).
Claims (8)
1. projection arrangement with automatic adjustment projection brightness function, this projection arrangement includes light source, power supply, camera lens module, video display, and this power supply is used for powering to light source; This camera lens module is used for the image that projection image's display is provided, and it is characterized in that: this projection arrangement also comprises:
Polarization spectroscope is used to receive the light that light source projects is come, and reflecting part light reaches the transmission residual ray to video display;
This polarization spectroscope also is used for the light that video display reflects back is transmitted through the camera lens module;
The light detecting unit is used for the digit value of the light correspondence that comes from the polarization spectro mirror reflection that the detecting image display do not receive, and with itself and a preset value relatively, produces a control signal according to comparative result;
Power-supply controller of electric is used for adjusting according to this control signal control power supply the brightness of light source, and the digit value of the light correspondence that goes out until light source projects reaches preset value.
2. the projection arrangement with automatic adjustment projection brightness function as claimed in claim 1 is characterized in that: this light source is the LED white light source, LED rgb light source, or incandescent lamp bulb.
3. the projection arrangement with automatic adjustment projection brightness function as claimed in claim 1 is characterized in that: this optical sensor is micro electronmechanical projection arrangement optical sensor.
4. projection arrangement with automatic adjustment projection brightness function, it is characterized in that: this projection arrangement includes three light sources, power supply, three video displays and camera lens module, this power supply is used for powering to three light sources respectively, and this projection arrangement also comprises:
Three polarization spectroscopes are used for receiving the light that light source projects is come respectively, and reflecting part light reaches the transmission residual ray to video display;
These three polarization spectroscopes, the light that also is used for respectively three video displays being reflected back is transmitted through the camera lens module;
The light detecting unit is used for detecting respectively the digit value of the light correspondence that comes from three polarization spectro mirror reflections that three video displays do not receive, and with itself and corresponding preset value relatively, produces corresponding control signal according to comparative result;
Power-supply controller of electric is used for respectively adjusting corresponding light-source brightness according to the corresponding power supply of control signal control of correspondence, and the digit value of the light correspondence that goes out until light source projects reaches preset value respectively.
5. the projection arrangement with automatic adjustment projection brightness function as claimed in claim 4 is characterized in that: these three light sources are respectively red light source, green light source and blue-light source.
6. the projection arrangement with automatic adjustment projection brightness function as claimed in claim 4, it is characterized in that: this projection arrangement also comprises and closes optical element, and this closes optical element and is used for that three video displays are throwed the image that comes respectively and synthesizes one and be projected to the camera lens module.
7. a projection arrangement is adjusted the method for projection brightness automatically, it is characterized in that this method may further comprise the steps:
By light source projects light to one polarization spectroscope;
By polarization spectroscope reflecting part light to one video display, and the transmission residual ray;
Detect the digit value of the light correspondence that comes from the polarization spectro mirror reflection that this video display do not receive, and with itself and a preset value relatively, produce a control signal according to comparative result;
Adjust the brightness of light source by light source controller according to this control signal control power supply, the digit value of the light correspondence that goes out until light source projects reaches preset value.
8. projection arrangement as claimed in claim 7 is adjusted the method for projection brightness automatically, it is characterized in that, this method is further comprising the steps of:
Light to the one camera lens module that comes from video display by the polarization spectroscope transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105477930A CN102073203A (en) | 2010-11-17 | 2010-11-17 | Projection device and method capable of automatically adjusting projection brightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105477930A CN102073203A (en) | 2010-11-17 | 2010-11-17 | Projection device and method capable of automatically adjusting projection brightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102073203A true CN102073203A (en) | 2011-05-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105477930A Pending CN102073203A (en) | 2010-11-17 | 2010-11-17 | Projection device and method capable of automatically adjusting projection brightness |
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| Country | Link |
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| CN (1) | CN102073203A (en) |
Cited By (5)
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|---|---|---|---|---|
| CN104049442A (en) * | 2014-06-24 | 2014-09-17 | 芜湖市安曼特微显示科技有限公司 | Projector with automatic brightness maintenance function |
| CN106324961A (en) * | 2016-08-26 | 2017-01-11 | 合肥鑫晟光电科技有限公司 | Image display method and system |
| CN107167996A (en) * | 2017-06-05 | 2017-09-15 | 深圳奥比中光科技有限公司 | The laser projection module and depth camera adaptively adjusted |
| CN107167997A (en) * | 2017-06-05 | 2017-09-15 | 深圳奥比中光科技有限公司 | Laser projection module and depth camera |
| WO2023071548A1 (en) * | 2021-10-29 | 2023-05-04 | 华为技术有限公司 | Optical display apparatus, display system, vehicle, and color adjustment method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049442A (en) * | 2014-06-24 | 2014-09-17 | 芜湖市安曼特微显示科技有限公司 | Projector with automatic brightness maintenance function |
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| CN106324961B (en) * | 2016-08-26 | 2019-10-25 | 合肥鑫晟光电科技有限公司 | Image display method and system |
| CN107167996A (en) * | 2017-06-05 | 2017-09-15 | 深圳奥比中光科技有限公司 | The laser projection module and depth camera adaptively adjusted |
| CN107167997A (en) * | 2017-06-05 | 2017-09-15 | 深圳奥比中光科技有限公司 | Laser projection module and depth camera |
| WO2023071548A1 (en) * | 2021-10-29 | 2023-05-04 | 华为技术有限公司 | Optical display apparatus, display system, vehicle, and color adjustment method |
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Application publication date: 20110525 |