Patent classifications
G
PHYSICS
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G02
OPTICS
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G02B
OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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27/00
Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
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G02B27/42
Diffraction optics; , i.e. systems including a diffractive element being designed for providing a diffractive effect
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G02B27/4233
having a diffractive element [DOE] contributing to a non-imaging application
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G02B27/4255
for alignment or positioning purposes
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