Title:
照明光学系及び投影装置
Document Type and Number:
Japanese Patent JP5509827
Kind Code:
B2
Abstract:
First and second light sources emit first and second light beams, respectively. A light condensing system condenses the beams, and a polarization separation system separates each of the beams into first and second polarization components. A ½ phase plate converts the polarization state of the first polarization component to one equal to that of the second polarization component, and a rod integrator uniformizes spatial energy distribution of the beams condensed by the light condensing system. A relay system forms an image of an exit face of the rod integrator on a region to be illuminated. The light condensing system condenses the first and second polarization components onto first and second regions, respectively, of an entrance face of the rod integrator; and the ½ phase plate is placed at the first region of the entrance face of the rod integrator or at a position conjugate with the first region.
Inventors:
Yasumasa Sawai
Iwa Adachi
Iwa Adachi
Application Number:
JP2009281253A
Publication Date:
June 04, 2014
Filing Date:
December 11, 2009
Export Citation:
Assignee:
Konica Minolta Co., Ltd.
International Classes:
G03B21/14; F21S2/00; G02B27/28; G03B21/00
Domestic Patent References:
| JP2002040416A | ||||
| JP2006308777A | ||||
| JP2007294337A | ||||
| JP2004205665A | ||||
| JP2001056451A | ||||
| JP2003311382A |
Attorney, Agent or Firm:
Shizuo Sano
Inoue On
Inoue On