Screen and projection system
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United States of America Patent
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Jul 15, 2014
Grant Date -
Jul 4, 2013
app pub date -
Sep 14, 2012
filing date -
Oct 17, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A screen in which observation distance may be adjusted while maintaining image brightness and a projection system using the screen. In a light control layer of a screen, a first angle region that determines a diffusion distribution of a reflected light is different according to the screen position in a control direction in which light diffusion control is performed. Accordingly, a diffusion distribution of image light emitted from a screen surface is adjusted to be tilted downward by an upper end and upward by a lower end according to the screen position. Thus, for example, a size of a diffused angle range is maintained to be 30°, and a direction in which the image light is diffusion-emitted corresponds to an assumed position of an observer. The projection image can be observed while maintaining brightness of an image and the observation distance L can be adjusted to be short.
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Cited Art Landscape
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