Title:
【発明の名称】コンパクトな広角対物レンズ
Document Type and Number:
Japanese Patent JP2591755
Kind Code:
B2
Abstract:
A wide-angle objective of compact construction and comparatively small diameter has its first lens element formed as a convex negative meniscus and its last or sixth lens element formed as a biconcave construction with the fourth lens element being a thick cemented lens.
Inventors:
HIRUTORUUTO SHITSUTOHOOFU
Application Number:
JP21809287A
Publication Date:
March 19, 1997
Filing Date:
September 02, 1987
Export Citation:
Assignee:
YOOZEFU SHUNAIDAA OPUTEITSUSHE UERUKE KUROINATSUHA GMBH UNTO CO KG
International Classes:
G02B9/62; G02B13/04; (IPC1-7): G02B13/04
Attorney, Agent or Firm:
Toshio Yano (1 outside)