using image sharpness techniques

Introduced: January 1990

Last revised: January 2021

Full Title

Mountings, adjusting means, or light-tight connections, for optical elements > Systems for automatic generation of focusing signals > using image sharpness techniques

Classification Context

Section:: PHYSICS
Class:: OPTICS
Subclass:: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

1 direct subcode

Child Classifications

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G02B 7/38 measured at different points on the optical axis