with mechanism for focusing or varying magnification

Full Title

Mountings, adjusting means, or light-tight connections, for optical elements > for lenses > with mechanism for focusing or varying magnification

Child Classifications

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• G02B 7/06 Focusing binocular pairs
• G02B 7/08 adapted to co-operate with a remote control mechanism
• G02B 7/09 adapted for automatic focusing or varying magnification
• G02B 7/10 by relative axial movement of several lenses, e.g. of varifocal objective lens