Title:
PROJECTION TYPE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/047800
Kind Code:
A1
Abstract:
In a projection type display device, light emitting means includes at least one light
source for emitting a coherent light. Image light generation means modulates the
light emitted by the light emission means so as to generate an image light. Projection
means projects the image light. Phase modulation means is arranged between
the light emission means and the image light generation means or between the image
light generation means and the projection means. The phase modulation means
has a region distributed in an azimuth direction or of a delay axis or the retardation
value in the plane intersecting the optical axis.
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Inventors:
OSAWA MITSUO (JP)
KAWAMORI ATSUSHI (JP)
KAWAMORI ATSUSHI (JP)
Application Number:
PCT/JP2007/070191
Publication Date:
April 24, 2008
Filing Date:
October 16, 2007
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
OSAWA MITSUO (JP)
KAWAMORI ATSUSHI (JP)
OSAWA MITSUO (JP)
KAWAMORI ATSUSHI (JP)
International Classes:
G02F1/13; G02B5/30; G02B27/09; G02B27/48; G03B21/00
Foreign References:
| JP2006047421A | 2006-02-16 | |||
| JPS61279822A | 1986-12-10 |
Attorney, Agent or Firm:
OGURI, Shohei et al. (7-13 Nishi-Shimbashi 1-chome, Minato-k, Tokyo 03, JP)
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