Title:
AUTOMATIC FOCUS ADJUSTING DEVICE
Document Type and Number:
Japanese Patent JPS5440633
Kind Code:
A
Abstract:
PURPOSE: To make narrow the dynamic range of a signal processing circuit by regulating the brightness signal level of a group of light receiving elements for producing image contrast information for focal adjustment.
Inventors:
AOKI MASAHIRO
Application Number:
JP10628377A
Publication Date:
March 30, 1979
Filing Date:
September 06, 1977
Export Citation:
Assignee:
OLYMPUS OPTICAL CO
International Classes:
G03B13/36; G02B7/32; G03B3/00; (IPC1-7): G02B7/11; G03B3/00; H04N5/26
Previous Patent: FLASH LAMP ASSEMBLY HAVING INCLINED CONTAINER
Next Patent: REFLECTING MIRROR OF PENTAGONAL ROOF TYPE
Next Patent: REFLECTING MIRROR OF PENTAGONAL ROOF TYPE