CN102072766B - Device and method for detecting brightness decay degree of bulb of projector - Google Patents
Device and method for detecting brightness decay degree of bulb of projector Download PDFInfo
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- CN102072766B CN102072766B CN 201010586818 CN201010586818A CN102072766B CN 102072766 B CN102072766 B CN 102072766B CN 201010586818 CN201010586818 CN 201010586818 CN 201010586818 A CN201010586818 A CN 201010586818A CN 102072766 B CN102072766 B CN 102072766B
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Abstract
The invention provides a device and a method for detecting the brightness decay degree of the bulb of a projector. The device comprises a brightness detection module and a processing module. The method comprises the following steps that: when reflecting the light rays emitted by the bulb of the projector, a reflector transmits the light rays; the brightness of the light rays transmitted by the reflector when the bulb of the projector is used for the first time is detected to obtain a first brightness value; the brightness of the current light rays transmitted by the reflector is detected to obtain a second brightness value; and the decay degree of the brightness of the bulb of the projector is calculated according to the first brightness value and the second brightness value. Thus, the detection of the brightness decay degree of the bulb of the projector is realized, so that the output brightness of the projector can be adjusted in time and the bulb can be replaced and maintained. In addition, as the light transmitted by the self-prepared reflector of the projector is detected, the normal use of the projector is not affected.
Description
Technical field
The present invention relates to projector's technical field, particularly a kind of devices and methods therefor that detects the attenuation amplitude of projecting camera light bulb brightness.
Background technology
Along with the development of projector and the expansion of application; A kind of like this application has appearred---and many projectors project to same display screen, like this, because the picture on the combination screen is to be stitched together by a plurality of projected images; At this moment; If the brightness of each projected image is inconsistent, will make the light and shade of the picture on the combination screen differ, so need carry out the consistance adjustment to the output brightness of each projector.
Generally speaking; Each projector is just adjusted before dispatching from the factory, and realizes the unanimity of each projector's output brightness, but has occurred such situation inevitably: because the rate of decay of each projecting camera light bulb differs; After operation a period of time; Each projecting camera light bulb brightness can't be consistent again, thereby has influenced the consistance of each projector's output brightness, has caused the inconsistent of combination on-screen displays brightness; So that the picture light and shade on the combination screen differs, and has influenced user's use.
For the output brightness that makes each projector realizes unanimity again; Need carry out consistance to each projector's output brightness adjusts automatically; System can be through understanding the attenuation amplitude of each projecting camera light bulb; Thereby the attenuation according to each bulb is adjusted each projector automatically, and a kind of known method is to use the luminance test instrument successively projecting camera light bulb to be carried out luminance test, though can obtain the attenuation amplitude of projecting camera light bulb like this; But in test process, covered the light of projecting camera light bulb inevitably, thereby influenced the normal use of projector owing to instrument.
Summary of the invention
The present invention proposes a kind of devices and methods therefor that detects the attenuation amplitude of projecting camera light bulb brightness, and the technical matters of solution is under the normal use that does not influence projector, to realize the detection to the attenuation amplitude of projecting camera light bulb brightness.
A kind of method that detects the attenuation amplitude of projecting camera light bulb brightness may further comprise the steps:
Step 1, the brightness of the light of projector's catoptron transmission when detecting projecting camera light bulb and using for the first time obtain first brightness value;
The brightness of the light of step 2, the catoptron transmission of the current said projector of detection obtains second brightness value;
Step 3, according to said first brightness value and said second brightness value, calculate the attenuation amplitude value of said projecting camera light bulb brightness.
A kind of device that detects the attenuation amplitude of projecting camera light bulb brightness comprises: brightness detection module, processing module;
Said brightness detection module is used to detect the brightness of the light of projector's catoptron transmission when using projecting camera light bulb for the first time, obtains first brightness value, detects the brightness of the light of current said projector catoptron transmission, obtains second brightness value;
Said processing module is used to preserve said first brightness value, and according to said first brightness value and said second brightness value, calculates the attenuation amplitude value of said projecting camera light bulb;
Said brightness detection module and said projector catoptron are at a distance of certain distance, and said distance is set with the speckle uniformity coefficient that this light forms on said brightness detection module according to the brightness of the light of said projector catoptron transmission.
The present invention proposes a kind of devices and methods therefor that detects the attenuation amplitude of projecting camera light bulb brightness; Light through successively detecting projector's catoptron transmission is when projecting camera light bulb uses for the first time and the brightness of current time; Thereby calculate the attenuation amplitude of projecting camera light bulb brightness; So that in time adjust the output brightness of projector or bulb changed maintenance, and owing to be that what to detect is the light of the catoptron transmission that carries of projector, so do not influence the normal use of projector.
Description of drawings
Fig. 1 is the schematic flow sheet of the method for a kind of attenuation amplitude that detects projector's brightness of the present invention;
Fig. 2 is the structural representation of the device of a kind of attenuation amplitude that detects projector's brightness of the present invention.
Embodiment
A kind of method that detects the attenuation amplitude of projecting camera light bulb brightness may further comprise the steps, like Fig. 1:
Step 1, the brightness of the light of projector's catoptron transmission when detecting projecting camera light bulb and using for the first time obtain first brightness value;
The brightness of the light of step 2, the catoptron transmission of the current said projector of detection obtains second brightness value;
Step 3, according to said first brightness value and said second brightness value, calculate the attenuation amplitude value of said projecting camera light bulb brightness.
The catoptron that uses projector to carry; This catoptron is mainly used in light that reflective projection machine bulb sends to display screen; But catoptron is in reflection; Inevitably can some light of transmission, the present invention be exactly through the brightness of the light that detects these catoptron transmissions (in order to distinguish the brightness value that twice detection obtains, brightness value called after first brightness value that the brightness of the light of projector's catoptron transmission obtains when detecting projecting camera light bulb and use for the first time; Brightness value called after second brightness value that the brightness of the light that detects the catoptron transmission of current said projector is obtained); Thereby detect the attenuation amplitude of projecting camera light bulb, and, so do not influence the normal use of projector when detecting because testing process does not influence the normal transmission of the light that projecting camera light bulb sends.
As a preferred embodiment; Said step 1 is specific as follows: twice detection carried out in the brightness of the light of said projector catoptron transmission at least when used said projecting camera light bulb the first time; At least two detected values that obtain are averaged, and the mean value that obtains is as said first brightness value;
Similarly as a preferred embodiment; Said step 2 is specific as follows: twice detection carried out in the brightness to the light of current said projector catoptron transmission at least; At least two detected values that obtain are averaged, and the mean value that obtains is as said second brightness value;
In fact, projecting camera light bulb possibly cause its real power unstable owing to reasons such as electric current variations, at this moment in order to obtain more accurate brightness value, obtains the method for mean value through repeated detection, can effectively evade the error that these factors cause.
Corresponding with said method; The present invention also provides a kind of device of attenuation amplitude of detection projecting camera light bulb brightness of the method in order to the attenuation amplitude of realizing the brightness of above-mentioned detection projecting camera light bulb; This device comprises brightness detection module and processing module; Like Fig. 2, it is worthy of note, realize that the device of method of the attenuation amplitude of above-mentioned detection projecting camera light bulb brightness is not limited to this a kind of structure;
Said brightness detection module is used to detect the brightness of the light of projector's catoptron transmission when using projecting camera light bulb for the first time, obtains first brightness value, detects the brightness of the light of current said projector catoptron transmission, obtains second brightness value;
The catoptron that uses projector to carry; This catoptron is mainly used in light that reflective projection machine bulb sends to display screen; But catoptron is in reflection ray; Inevitably can some light of transmission; The present invention is exactly through using said brightness detection module to detect the brightness of these light, obtaining said first brightness value and said second brightness value (in order to distinguish the brightness value that twice detection obtains, brightness value called after first brightness value that the brightness of the light of projector's catoptron transmission obtained when the detection projecting camera light bulb was used for the first time; Brightness value called after second brightness value that the brightness of the light that detects the catoptron transmission of current said projector is obtained); Thereby calculate the attenuation amplitude value of said projecting camera light bulb, and because the testing process of said brightness detection module does not influence the normal transmission of the light that said projecting camera light bulb sends, thereby the also not normal use of projector.
Said processing module is used to preserve said first brightness value, and according to said first brightness value and said second brightness value, calculates the attenuation amplitude value of said projecting camera light bulb;
Said processing module is not only preserved said first brightness value; And be connected with said brightness detection module; Receive said second brightness value that said brightness detection module obtains, and, calculate the attenuation amplitude value of said projecting camera light bulb according to said first brightness value and said second brightness value; Realize the automatic time calculating of projecting camera light bulb attenuation amplitude, so that understand the attenuation amplitude and the variation thereof of projecting camera light bulb in real time.
As a preferred embodiment; Said brightness detection module and said projector catoptron are at a distance of certain distance; Said distance is set with the speckle uniformity coefficient that this light forms on said brightness detection module according to the brightness of the light of said projector catoptron transmission; Light luminance apart from then said catoptron transmission too far away is not enough; Make said brightness detection module detect the too little or clear-cut detection of numerical value less than, the too near speckle that then forms of distance is inhomogeneous, makes that the detection of said brightness detection module is unstable.
Above-described embodiment of the present invention does not constitute the qualification to protection domain of the present invention.Any modification of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within the claim protection domain of the present invention.
Claims (1)
1. a device that detects the attenuation amplitude of projecting camera light bulb brightness is characterized in that, said device comprises: brightness detection module, processing module;
Said brightness detection module is used to detect the brightness of the light of projector's catoptron transmission when using projecting camera light bulb for the first time, obtains first brightness value, detects the brightness of the light of current said projector catoptron transmission, obtains second brightness value;
Said processing module is used to preserve said first brightness value, and according to said first brightness value and said second brightness value, calculates the attenuation amplitude value of said projecting camera light bulb;
Said brightness detection module and said projector catoptron are at a distance of certain distance, and said distance is set with the speckle uniformity coefficient that this light forms on said brightness detection module according to the brightness of the light of said projector catoptron transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010586818 CN102072766B (en) | 2010-12-14 | 2010-12-14 | Device and method for detecting brightness decay degree of bulb of projector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010586818 CN102072766B (en) | 2010-12-14 | 2010-12-14 | Device and method for detecting brightness decay degree of bulb of projector |
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| Publication Number | Publication Date |
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| CN102072766A CN102072766A (en) | 2011-05-25 |
| CN102072766B true CN102072766B (en) | 2012-12-26 |
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| CN 201010586818 Expired - Fee Related CN102072766B (en) | 2010-12-14 | 2010-12-14 | Device and method for detecting brightness decay degree of bulb of projector |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323218B (en) * | 2013-06-20 | 2016-04-13 | 广东威创视讯科技股份有限公司 | The brightness of projector detects bearing calibration and system |
| CN109870872B (en) * | 2017-12-05 | 2021-02-26 | 深圳光峰科技股份有限公司 | Light source system, automatic adjusting method of light source system and projection equipment |
| CN111290207B (en) * | 2020-03-09 | 2021-07-30 | 青岛海信激光显示股份有限公司 | Three-color laser projection equipment |
| CN111176064B (en) * | 2020-03-09 | 2021-07-30 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN111811644A (en) * | 2020-07-06 | 2020-10-23 | 李斯特技术中心（上海）有限公司 | Ultraviolet lamp monitoring system and method and vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1831695A (en) * | 2005-03-10 | 2006-09-13 | 明基电通股份有限公司 | Method for controlling temp of display device and its device |
| CN1916691A (en) * | 2005-08-15 | 2007-02-21 | 明基电通股份有限公司 | Projecting unit, and method for adjusting brightness of light source |
| CN201527535U (en) * | 2009-09-22 | 2010-07-14 | 广东威创视讯科技股份有限公司 | Mosaic wall |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1831695A (en) * | 2005-03-10 | 2006-09-13 | 明基电通股份有限公司 | Method for controlling temp of display device and its device |
| CN1916691A (en) * | 2005-08-15 | 2007-02-21 | 明基电通股份有限公司 | Projecting unit, and method for adjusting brightness of light source |
| CN201527535U (en) * | 2009-09-22 | 2010-07-14 | 广东威创视讯科技股份有限公司 | Mosaic wall |
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| CN102072766A (en) | 2011-05-25 |
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Address after: 510670 Guangdong city of Guangzhou province Kezhu Guangzhou high tech Industrial Development Zone, Road No. 233 Patentee after: Wei Chong group Limited by Share Ltd Address before: 510663 Guangzhou province high tech Industrial Development Zone, Guangdong, Cai road, No. 6, No. Patentee before: Guangdong Weichuangshixun Science and Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20121226 Termination date: 20191214 |