Title:
照明光学系およびそれを用いた投射型表示装置
Document Type and Number:
Japanese Patent JP4880957
Kind Code:
B2
Abstract:
An illumination optical system includes a splitter that includes first and second beam splitters. The second beam splitter includes, on a light source side, a compression optical system for narrowing a width of an incident light and for emitting the incident light having the narrowed width, wherein the compression optical system includes, in order from the light source side to an image display element side, an optical element having a positive refractive power, and an optical element that has a negative refractive power and a concave surface at the image display element side.
Inventors:
Hiroyuki Kodama
Kazuhiro Inoko
Kazuhiro Inoko
Application Number:
JP2005265868A
Publication Date:
February 22, 2012
Filing Date:
September 13, 2005
Export Citation:
Assignee:
Canon Inc
International Classes:
G03B21/14; G02B19/00; G02B27/18
Domestic Patent References:
| JP11212023A | ||||
| JP2003077305A | ||||
| JP2001215448A | ||||
| JP2003280094A | ||||
| JP2002189192A | ||||
| JP6075200A | ||||
| JP11271670A | ||||
| JP2004045907A | ||||
| JP2001142141A |
Attorney, Agent or Firm:
Yukio Takanashi