Invention Grant
- Patent Title: Lighting apparatus and projection type display, and driving method therefor
- Patent Title (中): 照明装置和投影型显示器及其驱动方法
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Application No.: US12219369Application Date: 2008-07-21
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Publication No.: US08684541B2Publication Date: 2014-04-01
- Inventor: Hidehito Iisaka , Shoichi Uchiyama
- Applicant: Hidehito Iisaka , Shoichi Uchiyama
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP2001-311337 20011009; JP2002-203927 20020712
- Main IPC: G03B21/14
- IPC: G03B21/14

Abstract:
A lighting apparatus used for a projection type display is provided, which can change the incident ray volume to an optical modulation device without changing the optical output intensity of the lamp, and can exhibit excellent effects in expressive power of an image and adaptability to the use environment. The lighting apparatus of the present invention comprises; a light source, two fly-eye lenses constituting a uniform lighting device, and a shading plate arranged between these fly-eye lenses and constituting a dimming device for adjusting the amount of light of the outgoing light from the light source. The angle of inclination of the shading plate is controlled based on an image signal supplied to the optical modulation device, thereby enabling adjustment of the amount of light.
Public/Granted literature
- US20090002313A1 Lighting apparatus and projection type display, and driving method therefor Public/Granted day:2009-01-01
Information query