Title:
PERMANENT MAGNET LENS SYSTEM
Document Type and Number:
Japanese Patent JPS51118363
Kind Code:
A
Abstract:
PURPOSE: To get permanent magnet lens system with wide range for focal distance and small magnetization lense function by shield pipe and short ring.
Inventors:
KASAI SHIYOUZOU
Application Number:
JP4318575A
Publication Date:
October 18, 1976
Filing Date:
April 11, 1975
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H01J37/143; H01J37/14; (IPC1-7): H01J37/14