Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Naofumi Yamauchi0
Date of Patent
December 8, 2009
0Patent Application Number
114305850
Date Filed
May 9, 2006
0Patent Primary Examiner
Patent 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.
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