Invention Grant
US08851684B2 Optical unit including an integrator optical system, and projection display device including the optical unit
有权
包括积分器光学系统的光学单元和包括光学单元的投影显示设备
- Patent Title: Optical unit including an integrator optical system, and projection display device including the optical unit
- Patent Title (中): 包括积分器光学系统的光学单元和包括光学单元的投影显示设备
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Application No.: US13375762Application Date: 2009-06-18
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Publication No.: US08851684B2Publication Date: 2014-10-07
- Inventor: Naofumi Ishikura
- Applicant: Naofumi Ishikura
- 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/JP2009/061089 WO 20090618
- International Announcement: WO2010/146683 WO 20101223
- Main IPC: G03B21/14
- IPC: G03B21/14 ; G03B21/20 ; H04N9/31
Abstract:
Provided is an optical unit that includes: light source (1a); light source (1b) located to face light source (1a); color wheel (2) located between light sources (1a and 1b); prism unit (3a) that totally reflects light emitted from light source (1a) and that is transmitted through color wheel (2), and transmits light emitted from light source (1b) to enter color wheel (2); and prism unit (3b) that totally reflects the light emitted from light source (1b) and that is transmitted through color wheel (2), and transmits the light emitted from light source (1a) to enter color wheel (2).
Public/Granted literature
- US20120075592A1 OPTICAL UNIT AND PROJECTION DISPLAY DEVICE Public/Granted day:2012-03-29
Information query
