CN102314056A - Projector capable of automatically adjusting projection brightness and method - Google Patents
Projector capable of automatically adjusting projection brightness and method Download PDFInfo
- Publication number
- CN102314056A CN102314056A CN2010102176039A CN201010217603A CN102314056A CN 102314056 A CN102314056 A CN 102314056A CN 2010102176039 A CN2010102176039 A CN 2010102176039A CN 201010217603 A CN201010217603 A CN 201010217603A CN 102314056 A CN102314056 A CN 102314056A
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- China
- Prior art keywords
- light
- brightness value
- optical sensor
- light source
- projection
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- 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.)
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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 projector capable of automatically adjusting projection brightness and a method. The projector comprises a memory, an optical sensor, a controller, a power supply controller, an optical engine and a projection lens group. The memory is used for storing a preset illuminance interval, wherein the preset illumination intensity interval is from 750lux to 1500lux; the optical sensor is used for receiving light from a projection surface; a controller is used for obtaining light illuminance from the optical sensor, and determining whether the light illuminance is in the preset illuminance interval stored in the memory; the power supply controller is used for controlling a power supply to adjust the illuminance of a light source when the illuminance of light from the optical sensor is not within in the preset illuminance interval, so that the illuminance of the light from the optical sensor falls into the preset illuminance interval; the optical engine is used for providing an image, and the projection lens group is used for projecting the image provided by the optical engine to a projection surface via illumination of the light source. By adopting the projector, the influence of light of an external environment on the projection brightness can be avoided.
Description
Technical field
The present invention relates to a kind of projector and method with automatic adjustment projection brightness function.
Background technology
At present; The brightness meeting of the light that projector transmits receives the influence of surrounding environment light; And then influence the sharpness of projection, especially for micro projector, user regular meeting carries minitype projection machine and in varying environment, uses; Some ambient light can't be controlled through user self, thereby can cause the not enough or excessively bright problem of projection brightness to occur.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of projector and method with automatic adjustment projection brightness function, the brightness of light source in the brightness value adjustment projector of the light that reflects through the sensing projection surface, thus address the above problem.
The present invention provides a kind of projector with automatic adjustment projection brightness function; Include light source, optics and draw sincere, projection lens set and power supply; This light source is used for to the projecting plane of display image throw light, and this power supply is used for light source power supply, and this projector also comprises: storer; It is interval to be used to store a preset brightness value, and this preset brightness value interval is between 750lux to 1500lux; Optical sensor is used to receive the light that comes from said projection surface; Controller is used for obtaining the brightness value of the light that comes from optical sensor, and whether the brightness value of comparing this light is in the preset brightness value interval that storer is stored; Power-supply controller of electric; Be used for when the brightness value of the light that comes from optical sensor is not in preset brightness value interval, the brightness value that the control power supply is adjusted the light of irradiation brightness in coming from optical sensor of light source drops in the interval of preset brightness value; This optics draws sincere, when being used for brightness value when the light that comes from optical sensor and dropping in preset brightness value interval, image is provided; And this projection lens set, be used for that optics is drawn the sincere image that provides and project projection surface through light source irradiation.
The present invention also provides a kind of projection brightness automatic adjusting method that is applied to projector; This projector includes storer, light source, optical sensor, controller, power-supply controller of electric, power supply, optics draws sincere and the projection lens set; It is interval that this storer is used to store a preset brightness value, and this preset brightness value interval is between 750lux to 1500lux; This method may further comprise the steps: light source is to the transmission plane throw light of a display image; Optical sensor receives the light from said projection surface reflected back; Controller obtains the brightness value that comes from the light in the optical sensor, and whether the brightness value of comparing this light is in the interval of preset brightness value; When the brightness value of the light that comes from optical sensor was not in preset brightness value interval, the brightness value that the power controller controls power supply is adjusted the light of irradiation brightness in coming from optical sensor of light source dropped in the interval of preset brightness value; When the brightness value of the light in coming from optical sensor dropped in preset brightness value interval of preset brightness value, optics drew the sincere image that provides; The image that the projection of projection lens set is provided is to projection surface.
Projector with automatic adjustment projection brightness function of the present invention, the brightness of light source in the brightness value adjustment projector of the light that reflects through the sensing projection surface, thus avoid of the influence of external environment light to projection brightness.
Description of drawings
Fig. 1 is the projector synoptic diagram with automatic adjustment projection brightness function of the present invention;
Fig. 2 is the method flow diagram that projector of the present invention is adjusted projection brightness automatically.
The main element symbol description
| Projector | 100 |
| Projection surface | 200 |
| Storer | 101 |
| Optical sensor | 102 |
| Controller | 103 |
| Power-supply controller of electric | 105 |
| Power supply | 104 |
| The projection lens set | 108 |
| Optics draws sincere | 107 |
| Light source | 106 |
| The transmission plane of throw light to a display image | S501 |
| Reception is from the light of said projection surface | S502 |
| Obtain the brightness value that comes from the light in the optical sensor | S503 |
| Whether the brightness value of comparing this light is in the interval of preset brightness value | S504 |
| The brightness value of the light of irradiation brightness in coming from optical sensor of adjustment light source drops in the interval of preset brightness value | S505 |
| Image is provided | S506 |
| With the image projecting that provides to the projecting plane | S507 |
Embodiment
As shown in Figure 1, be the synoptic diagram of projector 100 with automatic adjustment projection brightness function.This projector 100 include storer 101, light source 106, optical sensor 102, controller 103, power-supply controller of electric 105, power supply 104, optics draw sincere 107, and projection lens set 108.
This storer 101, it is interval to be used to store a preset brightness value.In this embodiment, this preset brightness value interval is between 750lux to 1500lux.In other embodiments, this preset brightness value can be provided with according to user's needs.
This light source 106 is used for through projection surface 200 throw lights of projection lens set 108 to a display image.In this embodiment, this light source 106 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 also can be various light sources such as light emitting diode or laser diode.
This power supply 104 is used for light source 106 is supplied power, and is luminous with control light source 106.In this embodiment, the voltage of power supply 104 or power difference can cause the brightness of the light that light source 106 sent different.
This optical sensor 102 is used to receive the light that comes from projection surface 200 reflected backs, and with this light transmission to controller 103.In this embodiment, this optical sensor is MEMS (MEMS, a Micro Electro Mechanical System) optical sensor.
This controller 103 is used for obtaining the brightness value of the light that comes from optical sensor 102, and whether the brightness value of comparing this light is in the interval of the preset brightness value that storer 101 is stored.
This power-supply controller of electric 105 is used for when the brightness value of the light that comes from optical sensor 102 is not in preset brightness value interval; The power or the voltage of adjustment power supply wait the irradiation brightness of adjusting light source, and the brightness value of the light in coming from optical sensor 102 drops in the interval of preset brightness value.In this embodiment, this power-supply controller of electric 105 can be provided with some periodic pulse signals according to width modulation (PWM, Pulse-Width Modulation) and control electric power starting or close light source 106, thus the brightness of the light that control light source 106 is sent.For example: when controller 103 detects the brightness value during less than 750lux that comes from the light in the optical sensor 102; Sending one first instructs in power-supply controller of electric 105; This power-supply controller of electric 105 produces the pulse signal of one-period property according to this first instruction; This pulse signal control power supply 104 accelerates to open and close the frequency of light source 106, thus the brightness of the light that enhancing light source 106 is sent.Detect the brightness value during that comes from the light in the optical sensor 102 at controller 103 greater than 1500lux; Sending one second instructs in power-supply controller of electric 105; This power-supply controller of electric 105 produces the pulse signal of one-period property according to this second instruction; This pulse signal control power supply 104 reduces the frequency of opening and closing light source 106, thereby weakens the brightness of the light that light source 106 sent.In other embodiments, this power-supply controller of electric 105 also can adopt the mode of stepless light modulation to adjust the brightness of the light that light source 106 sent.
This optics draws sincere 107 when being used for brightness value when the light that comes from optical sensor 102 and dropping in preset brightness value interval, and image is provided.
This projection lens set 108 is used for that optics is drawn sincere 107 images that produce and is projected to projecting plane 200 through light source 106 irradiations.
As shown in Figure 2, adjust the method flow diagram of projection brightness automatically for projector of the present invention.
This light source 106 is through the projection surface 200 (step S501) of projection lens set 108 throw light to display images.
The light that this optical sensor 102 receives from said projection surface 200 reflected backs, and with this light transmission to controller 103 (step S502).
This controller 103 obtains the brightness value (step S503) that comes from the light in the optical sensor 102.
Whether the brightness value of this controller 103 these light of comparison is in preset brightness value interval (step S504).
When the brightness value of the light that comes from optical sensor 102 was not in preset brightness value interval, the brightness value of the light of irradiation brightness in coming from optical sensor of these power-supply controller of electric 105 adjustment light sources 106 dropped in the interval of preset brightness value (step S505).
When the brightness value of the light in coming from optical sensor 102 dropped in preset brightness value interval of preset brightness value, this optics draws sincere 107 provided image (step S506).
This projection lens set 108 is drawn sincere 107 images that provide with optics and is projected to (step S507) on the projecting plane 200 through light source 106 irradiations.
Claims (9)
1. projector with automatic adjustment projection brightness function; Include light source, optics and draw sincere, projection lens set and power supply, this light source is used for to the projecting plane of display image throw light, and this power supply is used for light source power supply; It is characterized in that this projector also comprises:
Storer, it is interval to be used to store a preset brightness value, and this preset brightness value interval is between 750lux to 1500lux;
Optical sensor is used to receive the light that comes from said projection surface;
Controller is used for obtaining the brightness value of the light that comes from optical sensor, and whether the brightness value of comparing this light is in the preset brightness value interval that storer is stored;
Power-supply controller of electric; Be used for when the brightness value of the light that comes from optical sensor is not in preset brightness value interval, the brightness value that the control power supply is adjusted the light of irradiation brightness in coming from optical sensor of light source drops in the interval of preset brightness value;
This optics draws sincere, when being used for brightness value when the light that comes from optical sensor and dropping in preset brightness value interval, image is provided; And
This projection lens set is used for that optics is drawn the sincere image that provides and projects projection surface through light source irradiation.
2. the projector with automatic adjustment projection brightness function as claimed in claim 1; It is characterized in that; When controller detects the brightness value during less than 750lux come from the light in the optical sensor; Take place one first and instruct in power-supply controller of electric, this power-supply controller of electric is accelerated to open and close the frequency of light source according to the pulse signal of the first instruction generation one-period property through this pulse signal control power supply.
3. the projector with automatic adjustment projection brightness function as claimed in claim 1; It is characterized in that; When controller detects the brightness value during greater than 1500lux come from the light in the optical sensor; Take place one second and instruct in power-supply controller of electric, this power-supply controller of electric reduces the frequency of opening and closing light source according to the pulse signal of the second instruction generation one-period property through this pulse signal control power supply.
4. the projector 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.
5. the projector with automatic adjustment projection brightness function as claimed in claim 1 is characterized in that this optical sensor is the MEMS optical sensor.
6. projection brightness automatic adjusting method that is applied to projector; It is characterized in that: this projector includes storer, light source, optical sensor, controller, power-supply controller of electric, power supply, optics draws sincere and the projection lens set; It is interval that this storer is used to store a preset brightness value, and this preset brightness value interval is between 750lux to 1500lux; This method may further comprise the steps:
Light source is to the transmission plane throw light of a display image;
Optical sensor receives the light from said projection surface reflected back;
Controller obtains the brightness value that comes from the light in the optical sensor, and whether the brightness value of comparing this light is in the interval of preset brightness value;
When the brightness value of the light that comes from optical sensor was not in preset brightness value interval, the brightness value that the power controller controls power supply is adjusted the light of irradiation brightness in coming from optical sensor of light source dropped in the interval of preset brightness value;
When the brightness value of the light in coming from optical sensor dropped in preset brightness value interval of preset brightness value, optics drew the sincere image that provides;
The image that the projection of projection lens set is provided is to projection surface.
7. projection brightness automatic adjusting method as claimed in claim 6 is characterized in that, this method may further comprise the steps:
The brightness value of the light in coming from optical sensor is during less than 750lux, and this power-supply controller of electric produces the pulse signal of one-period property, accelerates to open and close the frequency of light source through this pulse signal control power supply.
8. projection brightness automatic adjusting method as claimed in claim 6 is characterized in that, this method may further comprise the steps:
The brightness value of the light in coming from optical sensor is during greater than 1500lux, and this power-supply controller of electric produces the pulse signal of one-period property, reduces the frequency of opening and closing light source through this pulse signal control power supply.
9. projection brightness automatic adjusting method as claimed in claim 6 is characterized in that, this light source is the LED white light source, LED rgb light source, or incandescent lamp bulb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102176039A CN102314056A (en) | 2010-07-05 | 2010-07-05 | Projector capable of automatically adjusting projection brightness and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102176039A CN102314056A (en) | 2010-07-05 | 2010-07-05 | Projector capable of automatically adjusting projection brightness and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102314056A true CN102314056A (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102176039A Pending CN102314056A (en) | 2010-07-05 | 2010-07-05 | Projector capable of automatically adjusting projection brightness and method |
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| Country | Link |
|---|---|
| CN (1) | CN102314056A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841492A (en) * | 2011-06-21 | 2012-12-26 | 宏碁股份有限公司 | Electronic device and control method thereof |
| CN103777438A (en) * | 2012-10-19 | 2014-05-07 | 国基电子（上海）有限公司 | Mobile terminal with miniature projector and projection method |
| CN104243881A (en) * | 2014-09-08 | 2014-12-24 | 陆俊 | Projection control method and system of projector |
| CN104883521A (en) * | 2014-02-28 | 2015-09-02 | 光宝科技股份有限公司 | Projection device and projection method thereof |
| CN106292148A (en) * | 2016-09-30 | 2017-01-04 | 苏州佳世达光电有限公司 | A kind of method adjusting color and projection arrangement |
| CN106610314A (en) * | 2015-12-31 | 2017-05-03 | 北京数科技有限公司 | Color detection method and device |
| CN107908063A (en) * | 2017-12-25 | 2018-04-13 | 陈益德 | Projection lens and projection display apparatus |
| US10379433B2 (en) | 2016-09-30 | 2019-08-13 | Qisda Corporation | Projector and related method for projecting a light beam |
| CN110928126A (en) * | 2019-12-09 | 2020-03-27 | 四川长虹电器股份有限公司 | Projection equipment capable of automatically adjusting brightness |
| CN114609851A (en) * | 2022-03-11 | 2022-06-10 | 深圳市中科创投科技有限公司 | Temperature adjusting circuit, temperature adjusting method, and projector |
| CN115086627A (en) * | 2022-06-06 | 2022-09-20 | 岚图汽车科技有限公司 | Projector control method and device and vehicle |
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2010
- 2010-07-05 CN CN2010102176039A patent/CN102314056A/en active Pending
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841492A (en) * | 2011-06-21 | 2012-12-26 | 宏碁股份有限公司 | Electronic device and control method thereof |
| CN103777438A (en) * | 2012-10-19 | 2014-05-07 | 国基电子（上海）有限公司 | Mobile terminal with miniature projector and projection method |
| CN104883521B (en) * | 2014-02-28 | 2018-01-02 | 光宝科技股份有限公司 | Projection arrangement and projecting method |
| CN104883521A (en) * | 2014-02-28 | 2015-09-02 | 光宝科技股份有限公司 | Projection device and projection method thereof |
| CN104243881A (en) * | 2014-09-08 | 2014-12-24 | 陆俊 | Projection control method and system of projector |
| CN107240369B (en) * | 2014-09-08 | 2019-11-22 | 上海和煦展览有限公司 | Using the projection control system of the projector of soft AP control |
| CN107404639B (en) * | 2014-09-08 | 2019-07-26 | 厦门市三槐集成系统工程有限公司 | Enhance the interactivity and efficiency, the projector controlled using soft AP of meeting |
| CN104243881B (en) * | 2014-09-08 | 2017-09-12 | 北京奇正悦扬科技有限公司 | The method for controlling projection and system of a kind of projecting apparatus |
| CN107240369A (en) * | 2014-09-08 | 2017-10-10 | 吴红平 | Using the projection control system of the soft AP projecting apparatus controlled |
| CN107290925A (en) * | 2014-09-08 | 2017-10-24 | 吴红平 | Using the method for work of the projection control system of the soft AP projecting apparatus controlled |
| CN107404639A (en) * | 2014-09-08 | 2017-11-28 | 吴小再 | Strengthen the interactive and efficiency of meeting, the projecting apparatus controlled using soft AP |
| CN107438177A (en) * | 2014-09-08 | 2017-12-05 | 吴小再 | A kind of projecting apparatus and its method for controlling projection controlled using soft AP |
| CN106610314A (en) * | 2015-12-31 | 2017-05-03 | 北京数科技有限公司 | Color detection method and device |
| CN106610314B (en) * | 2015-12-31 | 2019-02-22 | 北京一数科技有限公司 | A kind of method for detecting color and device |
| WO2017114250A1 (en) * | 2015-12-31 | 2017-07-06 | 青岛海尔股份有限公司 | Color detection method and device |
| CN106292148B (en) * | 2016-09-30 | 2018-07-31 | 苏州佳世达光电有限公司 | A kind of method and projection arrangement of adjustment color |
| US10379433B2 (en) | 2016-09-30 | 2019-08-13 | Qisda Corporation | Projector and related method for projecting a light beam |
| CN106292148A (en) * | 2016-09-30 | 2017-01-04 | 苏州佳世达光电有限公司 | A kind of method adjusting color and projection arrangement |
| CN107908063A (en) * | 2017-12-25 | 2018-04-13 | 陈益德 | Projection lens and projection display apparatus |
| CN110928126A (en) * | 2019-12-09 | 2020-03-27 | 四川长虹电器股份有限公司 | Projection equipment capable of automatically adjusting brightness |
| CN114609851A (en) * | 2022-03-11 | 2022-06-10 | 深圳市中科创投科技有限公司 | Temperature adjusting circuit, temperature adjusting method, and projector |
| CN115086627A (en) * | 2022-06-06 | 2022-09-20 | 岚图汽车科技有限公司 | Projector control method and device and vehicle |
| CN115086627B (en) * | 2022-06-06 | 2023-05-30 | 岚图汽车科技有限公司 | Projector control method and device and vehicle |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120111 |
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| WD01 | Invention patent application deemed withdrawn after publication |