Invention Grant
US08506093B2 Projector, method that adjusts luminance of projected image, and program
有权
投影仪，调整投影图像的亮度和程序的方法
- Patent Title: Projector, method that adjusts luminance of projected image, and program
- Patent Title (中): 投影仪，调整投影图像的亮度和程序的方法
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Application No.: US12998468Application Date: 2008-10-31
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Publication No.: US08506093B2Publication Date: 2013-08-13
- Inventor: Takeshi Kato
- Applicant: Takeshi Kato
- Applicant Address: JP Tokyo
- Assignee: NEC Display Solutions, Ltd.
- Current Assignee: NEC Display Solutions, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: McGinn IP Law Group, PLLC
- International Application: PCT/JP2008/069934 WO 20081031
- International Announcement: WO2010/050058 WO 20100506
- Main IPC: G03B21/14
- IPC: G03B21/14
Abstract:
A projector that projects an image to a projection object using light emitted from a light source lamp, including a light adjustment sensor that measures the projection distance to the projection object and the intensity of reflected light from the projection object; a zoom position sensor that detects a zoom ratio; and a control section that adjusts the intensity of light emitted from the light source lamp based on the projection distance and the reflected light intensity measured by the adjustment sensor and the zoom ratio detected by the zoom position sensor so as to keep the luminance of a projection image displayed on the projection object constant.
Public/Granted literature
- US20110199588A1 PROJECTOR, METHOD THAT ADJUSTS LUMINANCE OF PROJECTED IMAGE, AND PROGRAM Public/Granted day:2011-08-18
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