Title:
投写光学ユニット及び投写型カラー映像表示装置とこれを用いた背面投写型カラー映像表示装置
Document Type and Number:
Japanese Patent JP4671588
Kind Code:
B2
Abstract:
In a projection type image display apparatus, a projector optical unit for projecting an image onto a screen while magnifying a size of the image to be projected with respect to an original size of the image displayed by an image forming element, has a group of lenses for magnifying the size of the image with respect to the original size thereof, and an optical path extending from the image forming element to the screen to transmit the image along the optical path.
Inventors:
Koji Hirata
Shuji Kato
Masahiko Yatsu
Tsutomu Nakajima
Hidehiro Ikeda
Shuji Kato
Masahiko Yatsu
Tsutomu Nakajima
Hidehiro Ikeda
Application Number:
JP2003207007A
Publication Date:
April 20, 2011
Filing Date:
August 11, 2003
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G02B13/18; G03B21/10; G02B13/16; G02B13/24; G02B21/00; G02B27/18; G03B21/00; G03B21/20; H04N9/31
Domestic Patent References:
| JP10260474A | ||||
| JP2002139793A | ||||
| JP2002107820A | ||||
| JP2000206614A | ||||
| JP95668A |
Foreign References:
| WO2002021851A2 | ||||
| WO2002069018A1 |
Attorney, Agent or Firm:
Manabu Inoue