Systems for automatic generation of focusing signals

Full Title

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

Classification Context

Section:

PHYSICS

Class:

OPTICS

Subclass:

OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

Scope Notes

Application references: using such signals to control focus of particular apparatus, see the subclasses for the apparatus, e.g.

Child Classifications

Navigate with arrow keys, Enter to open

• G02B 7/3 using parallactic triangle with a base line
• G02B 7/34 using different areas in a pupil plane
• G02B 7/36 using image sharpness techniques
• G02B 7/4 using time delay of the reflected waves, e.g. of ultrasonic waves