Method of producing a lens

Details Method of producing a lens Method of producing a lens

1992-06-19

1994-03-29

Lowe, James

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

29407, 29464, 29469, 264 14, 264 17, 264 401, 359819, 359900, B29D 1100

Patent

active

052980960

ABSTRACT:
A method of producing a high-precision lens system, such as a stepper lens, involves the following steps: (a) attaching a metal frame to the radial periphery of each of a plurality of lens elements at a prescribed distance from the optical axis of the element; (b) positioning the periphery of each metal frame at a prescribed radial distance from a reference axis to align the optical axis of each lens element along the reference axis; and (c) securing the individual lens sections together. Adjustment of the eccentricity of the individual lenses is accomplished by measuring the displacement of the lens-frame periphery from the reference axis.

REFERENCES:
patent: 3427703 (1969-02-01), Baade
patent: 3599377 (1971-08-01), Dartnell
patent: 3762821 (1973-10-01), Bruning et al.
patent: 3924936 (1975-12-01), Clark
patent: 4046458 (1977-09-01), Smulders et al.
patent: 4496416 (1985-01-01), Machler et al.

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