Patent classifications
G
PHYSICS
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G02
OPTICS
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G02B
OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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13/00
Optical objectives specially designed for the purposes specified below
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G02B13/001
Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
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G02B13/0055
employing a special optical element
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G02B13/0075
having an element with variable optical properties
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