Title:
【発明の名称】前絞り投影レンズ
Document Type and Number:
Japanese Patent JP2706946
Kind Code:
B2
Inventors:
Abe Tetsuya
Application Number:
JP14011088A
Publication Date:
January 28, 1998
Filing Date:
June 07, 1988
Export Citation:
Assignee:
Asahi Optical Co., Ltd.
International Classes:
G02B9/34; G02B13/24; (IPC1-7): G02B13/24
Domestic Patent References:
| JP5596915A | ||||
| JP60239705A | ||||
| JP6290610A | ||||
| JP1128025A |
Attorney, Agent or Firm:
Tamio Nishiwaki