Title:
ズームレンズ及びそれを用いた投影装置
Document Type and Number:
Japanese Patent JP4143170
Kind Code:
B2
More Like This:
Inventors:
Ken Wada
Application Number:
JP14230098A
Publication Date:
September 03, 2008
Filing Date:
May 08, 1998
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B13/18; G02B15/20; G02B13/24
Domestic Patent References:
| JP3139607A | ||||
| JP3158817A | ||||
| JP11084243A | ||||
| JP60031110A |
Attorney, Agent or Firm:
Yukio Takanashi