VERFAHREN ZUM OPTISCHEN ZENTRIEREN MINDESTENS EINER LINSE, ZENTRIERVORRICHTUNG UND FASSUNG FUER EIN LINSENSYSTEM

摘要

1494133 Grinding lenses PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 12 Feb 1975 [15 Feb 1974] 5940/75 Heading B3D [Also in Division G2] A lens is centred before grinding by being held between the opposed cups of a centring apparatus while a fluid under pressure (e.g. air) is admitted via bores to each cup to reduce sliding friction and so obtain more exact centring.