Title:
ILLUMINATOR AND PROJECTIVE DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2001268588
Kind Code:
A
Abstract:
To efficiently and uniformly illuminate light rays from a light source on an image forming means in an illuminator which uses plural light sources and is used for a projective display device using one sheet of the image forming means.
Each of the light rays from plural light sources 30, 31 collected and reflected by concave mirrors 32, 33 are deflected and synthesized by a prism array board 34, then is separated into light rays of prescribed wavelength bands at every time by a prism array plate 34, and is passed through tow lens array plates 35, 36 while controlling luminous flux density by a light collecting means 43, thereby illuminating a liquid crystal panel 39.
Inventors:
FUSHIMI YOSHIMASA
TANAKA TAKAAKI
WADA MITSUHIRO
TANAKA TAKAAKI
WADA MITSUHIRO
Application Number:
JP2000079814A
Publication Date:
September 28, 2001
Filing Date:
March 22, 2000
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G02F1/13; G02F1/1335; G02F1/13357; G03B21/14; G09F9/00; H04N9/31; (IPC1-7): H04N9/31; G02F1/13; G02F1/13357; G03B21/14; G09F9/00
Attorney, Agent or Firm:
Hiroyuki Ikeuchi (1 person outside)