G
PHYSICS
G
PHYSICS
G02
OPTICS
G02
OPTICS
G02B
OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
G02B
OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
G02B27/00
Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
G02B27/00
Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
G02B27/09
Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
G02B27/09
Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for