Optics: measuring and testing – By alignment in lateral direction – With registration indicia
Patent
1979-12-26
1982-03-16
Punter, William H.
Optics: measuring and testing
By alignment in lateral direction
With registration indicia
356127, B01B 1126
Patent
active
043198465
ABSTRACT:
A method and apparatus for aligning a lens blank upon a lens blocking device. The apparatus comprises a transparent aligning member, attached by arm means to a stanchion on the lens blocking machine. Vertically aligned perpendicular intersecting linear indicia are imprinted upon the upper and lower surfaces of the transparent member for vertically aligning an underlying lens without introducing a parallax error. A lens retaining member is also carried by the stanchion and is selectively pivoted into position to retain the aligned lens blank for blocking. The method consists of rotating a lens blank upon a lens blocking machine until perpendicularly intersecting linear indicia on the surface of the lens are vertically aligned with perpendicularly intersecting indicia on the upper and lower surfaces of a transparent aligning member. Once alignment is achieved the transparent aligning member is rotated away and a retaining member is rotated into position and biases the lens blank against the lens blocking apparatus.
REFERENCES:
patent: 2166037 (1939-07-01), Campos
patent: 2465153 (1949-03-01), Fritzche
patent: 3257686 (1966-06-01), Merker et al.
patent: 3804153 (1974-04-01), Tagnon
patent: 4136727 (1979-01-01), Vogt
patent: 4169318 (1979-10-01), Cortes
Henry David W.
Mathews Herbert H.
Byrne John J.
Coburn Optical Industries Inc.
Punter William H.
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