发明公开
- 专利标题: PROJECTION APPARATUS PROVIDING REDUCED SPECKLE ARTIFACTS
- 专利标题(中): 与降低斑点状赝像投影设备
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申请号: EP11727380.5申请日: 2011-06-13
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公开(公告)号: EP2583467A1公开(公告)日: 2013-04-24
- 发明人: MARCUS, Michael, Alan , SILVERSTEIN, Barry, D. , KURTZ, Andrew, Frederick
- 申请人: Eastman Kodak Company
- 申请人地址: 343 State Street Rochester, New York 14650-2201 US
- 专利权人: Eastman Kodak Company
- 当前专利权人: Eastman Kodak Company
- 当前专利权人地址: 343 State Street Rochester, New York 14650-2201 US
- 代理机构: Wagner & Geyer
- 优先权: US816579 20100616
- 国际公布: WO2011159594 20111222
- 主分类号: H04N9/31
- IPC分类号: H04N9/31 ; G03B21/56 ; G03B21/60
摘要:
A projection apparatus for producing color images having reduced speckle artifacts comprising: at least three narrow band light sources having first, second and third visible wavelength bands; a digital image source providing color digital image data; at least one spatial light modulator for forming a color image using light responsive to the color digital image data; a projection display surface including a reflective layer that reflects incident illumination in the first, second, and third wavelength bands; and a fluorescent agent that absorbs a fraction of the incident light in the first visible wavelength bands and emits light in a corresponding first emissive visible wavelength band; and a projection lens that projects the color image onto the projection display surface; wherein return light from the projection display surface contains light in both the first incident visible wavelength band and the first emissive visible wavelength band, thereby reducing speckle artifacts.
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