CPC Subgroup
G02B 27/54 Schlieren-optical systems
Full Title
Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 > Optics for phase object visualisation > Schlieren-optical systems
G02B 27/54 Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 > Optics for phase object visualisation > Schlieren-optical systems