Title:
FOCUS DISTANCE CALIBRATING MEANS FOR IN-MIRROR TYPE LENS
Document Type and Number:
Japanese Patent JPS52155550
Kind Code:
A
Abstract:
PURPOSE: To facilitate better and easy calibration of focus set up during manufacturing process, by adjusting aerial gap on lenses after selecting and using the reflection mirros which slightly differ in their curvature, in producing in-mirror lens for such as copying machine and etc.
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Inventors:
MIKAMI NOBUHISA
KAWAMURA ATSUSHI
KAWAMURA ATSUSHI
Application Number:
JP7170376A
Publication Date:
December 24, 1977
Filing Date:
June 19, 1976
Export Citation:
Assignee:
RICOH KK
International Classes:
G03B27/52; G02B9/34; G02B15/02; G02B15/04; G02B17/08; G03B27/32; G03G15/04; (IPC1-7): G02B9/34; G02B15/04; G02B17/08; G03B27/32