Directional screen and image projection system

Details Directional screen and image projection system Directional screen and image projection system

2006-05-09

2009-12-08

Mahoney, Christopher (Department: 2862)

Optical: systems and elements

Projection screen

C359S459000, C359S460000, C385S116000

Reexamination Certificate

active

07630130

ABSTRACT:
To provide a directional screen which can efficiently converge light from a projector on an observer and which is hardly affected by external light. That is, multiple transparent protrusion structures are formed on a base material, and a light absorbing layer communicating in the vertical direction of each of the protrusion structures is provided. The formation of a recess structure or a through-hole exerts an effect similar to that of a protrusion structure. Alternatively, fibrous protrusions each having a high light reflectance are used as the protrusion structures, and are densely formed on the base material while they are slanted in the direction of external light.

REFERENCES:
patent: 3704055 (1972-11-01), Hong
patent: 6261664 (2001-07-01), Beeson et al.
patent: 6999232 (2006-02-01), Peterson et al.
patent: 7262911 (2007-08-01), Niwa et al.
patent: 7270423 (2007-09-01), Katase

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