Invention Grant
US08035894B2 Transparent screen, projection display device, and image display method
有权
透明屏幕,投影显示装置和图像显示方法
- Patent Title: Transparent screen, projection display device, and image display method
- Patent Title (中): 透明屏幕,投影显示装置和图像显示方法
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Application No.: US12609923Application Date: 2009-10-30
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Publication No.: US08035894B2Publication Date: 2011-10-11
- Inventor: Takao Endo , Yuzo Nakano , Hayato Takeuchi
- Applicant: Takao Endo , Yuzo Nakano , Hayato Takeuchi
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2009-159578 20090706
- Main IPC: G03B21/56
- IPC: G03B21/56 ; G03B21/60

Abstract:
A Fresnel lens screen 20 is comprised of a light entering surface partial total reflection type Fresnel lens 24, a first light diffusing part 26 disposed behind the Fresnel lens, and a first base 25. An image display element 30 disposed behind the Fresnel lens screen 20 has a lens element 31, a second base 32, and a third base 35. Second light diffusing parts 33 are disposed behind the second base 32. Each of the second light diffusing parts 33 includes two types of particulates having different particle sizes which are distributed therein.
Public/Granted literature
- US20100188745A1 TRANSPARENT SCREEN, PROJECTION DISPLAY DEVICE, AND IMAGE DISPLAY METHOD Public/Granted day:2010-07-29
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