Title:
プロジェクタ装置
Document Type and Number:
Japanese Patent JP4728518
Kind Code:
B2
Abstract:
A projector device is provided which is capable of reducing its costs by making it possible to increase luminance of outgoing light from a rod integrator with an output from a light source being remained unchanged and by making it possible to achieve a compact illuminating optical system using a shortened total length of the rod integrator. Notches each having a predetermined angle or a convex portion is formed in a vicinity of a light incident face and in a vicinity of a light outgoing face of a rod integrator. A sloped line produced at an angle formed by one portion of each of the notches on the light incident side relative to a center line is approximately parallel to a light incident line produced at an angle formed by incident light relative to the center line.
Inventors:
Shoji Eisaku
Application Number:
JP2001202692A
Publication Date:
July 20, 2011
Filing Date:
July 03, 2001
Export Citation:
Assignee:
NEC Display Solutions Co., Ltd.
International Classes:
G02B19/00; G02B26/08; G03B21/14; G02B27/18; G03B21/00; H04N9/31
Domestic Patent References:
| JP2000206452A | ||||
| JP2002529769A | ||||
| JP11202429A | ||||
| JP2000193911A | ||||
| JP2000321529A |
Foreign References:
| WO2000026721A1 |
Attorney, Agent or Firm:
Masahiko Desk
Akitaka Kimura
Toshio Asai
Akitaka Kimura
Toshio Asai