Title: Rear projection type fluorescent screen and rear projector
Application Number: 98120790 Application Date: 1998.09.28
Publication Number: 1219074 Publication Date: 1999.06.09
Approval Pub. Date: 2003.12.10 Granted Pub. Date: 2003.12.10
International Classifi-cation: H04N5/74
Applicant(s) Name: Matsushita Electric Industrial Co., Ltd. Address:
Inventor(s) Name: Yamaguchi Hiroshi;Ikida Kenichi
Attorney & Agent: yang kai
Abstract:
    The present invention provides a rear projection screen and a rear projector that have a great effect of reducing the reflection of the outside light with a small loss of the transmitted light. In a screen for the rear image projection system, a Fresnel lens sheet (4), a lenticular lens array sheet (5) whose longitudinal direction is arranged in the vertical direction, and a light diffusion sheet (7) are provided in that order from the projection side. The light diffusion sheet (7) has louver-shaped light absorption wall columns (8) whose longitudinal direction is arranged in the horizontal direction and a light diffusion layer (9). The light diffusion layer (9) is located on the observation side of the light absorption wall columns (8). As a result, the decrease of contrast caused by the diffuse reflection can be reduced greatly.
Time: 9