Optics: measuring and testing – Lens or reflective image former testing – Optical center – cylinder axis – or prism measuring or...
Patent
1978-11-29
1980-07-15
Corbin, John K.
Optics: measuring and testing
Lens or reflective image former testing
Optical center, cylinder axis, or prism measuring or...
G01B 900
Patent
active
042125383
ABSTRACT:
A method of and apparatus for testing the optical axis of an optic device having respective left and right lenses. The apparatus is designed to simulate respective left and right axes of vision which intersect at a focal point lying on a central axis of the optical device. Two collimated light beams such as are produced by a laser are projected to pass through respective equally spaced points, lying on opposing sides of the central axis, with a distance spanning therebetween and intersecting at the focal point. The distance spanning between the spaced points is the interpupiliary distance measurement pertaining to a particular set of prescribed measurements. The apparatus includes supporting structure for retaining an optic device made according to the set of prescribed measurements. The supporting structure positions the optic device in a position normal to the central axis. An optic device which has been properly made will allow the two light beams to intersect at the focal point when positioned upon the supportive structure.
REFERENCES:
patent: 4098002 (1978-07-01), Campbell et al.
Arnold Bruce Y.
Brown Charles E.
Corbin John K.
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