Title: Projective image display device
Application Number: 02129864 Application Date: 2002.08.20
Publication Number: 1410830 Publication Date: 2003.04.16
Approval Pub. Date: 2004.12.22 Granted Pub. Date: 2004.12.22
International Classifi-cation: G02B27/18;G03B21/14;G03B21/16;G03B21/20;H04N9/30
Applicant(s) Name: Fuji Photo Film Co., Ltd. Address:
Inventor(s) Name: Watanabe Takashi;Kaai Satoru
Attorney & Agent: li deshan
Abstract:
    A projection type image display apparatus comprises a variable stop mechanism adapted to regulate the size of effective luminous flux diameter at a predetermined position in the optical path from an illumination optical system to a projection lens system, and image mode switching means for controlling operations of the variable stop mechanism. Respective image modes suitable for viewing in bright and dark surrounding environments are selected by switching between greater and smaller effective luminous flux diameters.
Time: 4