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Patent Searching and Data


Title:
REFLECTION TYPE SCREEN
Document Type and Number:
Japanese Patent JP2008181046
Kind Code:
A
Abstract:

To provide a high-luminance reflection type screen that can reduce a loss of image light emitted from a projector, and that can be easily manufactured.

The reflection type screen comprises a diffusing base material which comprises a transparent substrate and a light diffusing layer and whose refractive index is represented by 1.40 or more, a circular Fresnel lens whose optical center is deviated from a screen toward the side of the projector and pitch is 122 m and height is 30 m for instance, and a metal reflecting layer. In the reflection type screen, the light diffusing layer is configured in such a manner that one or more layers in which a transparent layer portion and a light diffusing layer portion are integrated and whose Hayes value is 70% are laminated. Further, the reflection type screen which is characterized by further giving a reflection preventing film layer to an observer surface can be provided. Further, a light absorbing layer can be given as well.


Inventors:
Kagotani, Akihito
Iwata, Masaru
Ehashi, Masahiro
Fujiwara, Takayuki
Matsuno, Kiyoko
Application Number:
JP2007000016066
Publication Date:
August 07, 2008
Filing Date:
January 26, 2007
Export Citation:
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Assignee:
TOPPAN PRINTING CO LTD
International Classes:
G03B21/60; G02B3/08; G02B5/02