Title:
ZOOM OPTICAL SYSTEM
Document Type and Number:
Japanese Patent JPS55157710
Kind Code:
A
Abstract:
A zoom optical system utilizes a virtual object relay system in order to obtain compact size in a large aperture instrument while minimizing chromatic aberration. The size may further be reduced by employing limited amounts of special optical materials for some of the lens elements.
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Inventors:
RICHIYAADO EI BATSUKUROODAA
Application Number:
JP6383980A
Publication Date:
December 08, 1980
Filing Date:
May 14, 1980
Export Citation:
Assignee:
APPLIED SYSTEMS CORP
International Classes:
G02B15/20; G02B15/16; G02B17/08; (IPC1-7): G02B15/16; G02B17/08