Patents Assigned to Kikuchi Science Laboratory Inc.
  • Transmission type projection screen
    Patent number: 6411436
    Abstract: A transmission type projection screen includes a diffusion layer on which projection light is focused, and a neutral gray layer positioned behind the diffusion layer on a rear side of the diffusion layer at which the projection light enters. The optical density of the neutral gray layer is in the range of 0.05 to 0.7.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: June 25, 2002
    Assignee: Kikuchi Science Laboratory Inc.
    Inventor: Toji Kikuchi