Patent classifications
G
PHYSICS
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G02
OPTICS
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G02B
OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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7/00
Mountings, adjusting means, or light-tight connections, for optical elements
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G02B7/28
Systems for automatic generation of focusing signals
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G02B7/285
including two or more different focus detection devices, e.g. both an active and a passive focus detecting device
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