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Patent Searching and Data


Title:
ILLUMINATOR, PROJECTION DISPLAY APPARATUS AND ITS DRIVING METHOD
Document Type and Number:
Japanese Patent JP2004361500
Kind Code:
A
Abstract:

To provide an illuminator provided with an adaptive light control element and, moreover, realize fine control of light quantity on the low brightness side in the illuminator.

In the illuminator, the light control means 30 for controlling the light quantity of outgoing light from a light source 10 is arranged on the front surface of the light source 10. In such a case, the light control means 30 is arranged on the optical axis Y of the light in such a manner that the light control is performed preferentially from the region close to the optical axis Y and line-symmetrically or axis-symmetrically for the light axis Y.


Inventors:
HOSAKA HIROYUKI
Application Number:
JP2003156872A
Publication Date:
December 24, 2004
Filing Date:
June 02, 2003
Export Citation:
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Assignee:
SEIKO EPSON CORP
International Classes:
G02F1/13; F21V7/22; G03B21/00; G03B21/14; G09G3/20; G09G3/34; G09G3/36; H04N9/31; F21Y101/00; (IPC1-7): G03B21/14; F21V7/22; G02F1/13; G03B21/00; G09G3/20; G09G3/34; G09G3/36; H04N9/31
Attorney, Agent or Firm:
Kazuya Nishi
Masatake Shiga
Masakazu Aoyama