Title:
【発明の名称】温度変化補償レンズ系
Document Type and Number:
Japanese Patent JP2971912
Kind Code:
B2
Inventors:
Takayuki Iizuka
Application Number:
JP12519790A
Publication Date:
November 08, 1999
Filing Date:
May 15, 1990
Export Citation:
Assignee:
Asahi Optical Co., Ltd.
International Classes:
G02B13/18; G02B9/16; G02B13/24; (IPC1-7): G02B9/16; G02B13/18
Domestic Patent References:
| JP59211013A | ||||
| JP63147122A | ||||
| JP63259612A | ||||
| JP61292601A | ||||
| JP1133016A | ||||
| JP1303409A | ||||
| JP6421412A |
Attorney, Agent or Firm:
Tamio Nishiwaki