Title:
【発明の名称】コンパクトなズームレンズ
Document Type and Number:
Japanese Patent JP2699977
Kind Code:
B2
Abstract:
A compact zoom lens system with a zooming ratio of about 2 and a large aperture ratio comprises, in order from the object side, a front lens group having a positive refracting power and a rear lens group having a negative refracting power, which is arranged to be zoomed by varying the space between the both lens groups, and in which the front lens group comprises a negative lens component and a positive lens component and the rear lens group comprises a positive lens component and a negative lens component so that this lens system comprises four components as a whole.
Inventors:
Norihiko Aoki
Application Number:
JP11062987A
Publication Date:
January 19, 1998
Filing Date:
May 08, 1987
Export Citation:
Assignee:
Olympus Optical Co., Ltd.
International Classes:
G02B9/00; G02B15/16; (IPC1-7): G02B15/16; G02B9/00
Domestic Patent References:
| JP61259216A | ||||
| JP6048009A |