System and process for producing molded optical elements

Details System and process for producing molded optical elements System and process for producing molded optical elements

1984-05-17

1985-08-27

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

33180R, 65158, 249 53R, 264 401, 350409, 351159, 425169, 425808, B29D 1100

Patent

active

045377324

ABSTRACT:
A system in process for producing an improved plastic molded optical element such as a mirror or lens is provided. The molded optical body has at least a surface portion designed for effective interfacing with incident light by reflection or refraction. Discontinuities form reference points at fixed positions on the molded optical surface. The reference points can include a projection or recess formed at the center of the lens system on the optical axis having a sufficient magnitude in size for measurement to determine a spatial position of the optical element but limited in size to prevent any perceptible aberration to be introduced within the desired application of the optical element.

REFERENCES:
patent: 3118198 (1964-01-01), Prunier
patent: 3505861 (1970-04-01), Schoefer et al.
patent: 3970362 (1976-07-01), Laliberte
patent: 3973837 (1976-08-01), Page
patent: 3973838 (1976-08-01), Page
patent: 4171576 (1979-10-01), Lagorsse et al.
"Spectacle Lens Technology", Horne, Crane, Russak and Co., N.Y.C., 1978, p. 118.

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