Title:
照明光学系およびプロジェクタ装置
Document Type and Number:
Japanese Patent JP5494678
Kind Code:
B2
Abstract:
An illuminating optical system includes: a substantially rectangular-shaped light source that includes a light emitting surface with a split pattern formed thereat by a splitting line, the splitting line extending along a predetermined direction and splitting the light emitting surface into a plurality of separate areas; an illumination-target member that includes a rectangular radiation-target area; and an optical member in that condenses light departing the light emitting surface and radiates the condensed light toward the radiation-target area, wherein: an extent of uneven illumination attributable to an image of the split pattern at the light emitting surface of the light source, formed at the illumination-target member, is reduced.
Inventors:
Takao Goto
Application Number:
JP2012003059A
Publication Date:
May 21, 2014
Filing Date:
January 11, 2012
Export Citation:
Assignee:
NIKON CORPORATION
International Classes:
G03B21/14; G02B19/00; G02F1/13; G02F1/13357; H01L33/58
Domestic Patent References:
| JP2006084962A | ||||
| JP2004220015A | ||||
| JP2010049236A | ||||
| JP2010072137A | ||||
| JP61090584A | ||||
| JP2007507845A |
Attorney, Agent or Firm:
Fuyuki Nagai
Takao Watanabe
Takao Watanabe