Title: Fresnel lens plate and transmissive projection screen
Application Number: 02128204 Application Date: 2002.08.02
Publication Number: 1405582 Publication Date: 2003.03.26
Approval Pub. Date: 2006.10.25 Granted Pub. Date: 2006.10.25
International Classifi-cation: G02B3/08;G03B21/62
Applicant(s) Name: Dai Nippon Printing Co., Ltd. Address:
Inventor(s) Name: Honta Sei;Ite Michinao;Sekiguchi Hiroshi
Attorney & Agent: wang huimin
Abstract:
    A Fresnel lens sheet comprises a Fresnel lens on one surface thereof, wherein respective unit surfaces constructing the Fresnel lens sheet have rough surfaces. Since it has a rough surface, it enables suppressing the occurrence of moire, when making up a screen. The other Fresnel lens sheet comprises a Fresnel lens on one surface thereof, and a fly-eye lens or prisms as a regular concavities and convexities configuration for suppressing regular reflection on the surface thereof on a side opposite to the side having the Fresnel lens formed thereon. Since it has on its rear surface a fly-eye lens or a prism, it enables suppressing the occurrence of ghost image.
Time: 4
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