Invention Grant
- Patent Title: Lens array sheet, transparent screen, and rear-projection display
- Patent Title (中): 透镜阵列片,透明屏和背投显示
-
Application No.: US11362006Application Date: 2006-02-27
-
Publication No.: US07483214B2Publication Date: 2009-01-27
- Inventor: Tsutomu Yoshida , Kazuyoshi Ebina , Takashi Abe , Susumu Takahashi
- Applicant: Tsutomu Yoshida , Kazuyoshi Ebina , Takashi Abe , Susumu Takahashi
- Applicant Address: JP Tokyo
- Assignee: Toppan Printing Co., Ltd.
- Current Assignee: Toppan Printing Co., Ltd.
- Current Assignee Address: JP Tokyo
- Priority: JP2001-369216 20011203; JP2002-241309 20020822
- Main IPC: G02B27/10
- IPC: G02B27/10

Abstract:
A lens array sheet, a transparent screen using the same, and a rear-projection display device are provided in which it is possible to control a perspective angle for the image in both a horizontal direction and a vertical direction without causing a problem in that a gain of a light is reduced by an optical absorption and an S/N ratio is reduced by an increased white dispersion. First lens and second lens arrays are formed by disposing a plurality of half-cylindrical lenses in parallel on a common plane such that longitudinal directions of the cylindrical lenses should be orthogonal to each other. A unified lens array layer and a shading layer in which a section through which a light does not transmit is formed on a focal plane of the lens array layer form a lens array sheet. Furthermore, fresnel lenses are combined so as to form a transparent screen.
Public/Granted literature
- US20060176569A1 Lens array sheet, transparent screen, and rear-projection display Public/Granted day:2006-08-10
Information query