Method for production of rotationally symmetric non-spherical op

Details Method for production of rotationally symmetric non-spherical op Method for production of rotationally symmetric non-spherical op

1974-02-13

1977-06-28

Kimlin, Edward C.

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

354 4, 355 2, G03C 500

Patent

active

040323439

ABSTRACT:
A method and arrangement for the production of a rotationally symmetric, non-spherical optical element, in which one or more light beams are directed at a rotating light-sensitive medium, and a fixed opaque shield is situated over the light-sensitive medium to block a portion of the light beams from exposing the medium.

REFERENCES:
patent: 2183204 (1939-12-01), Reynolds
patent: 2549699 (1951-04-01), McLaughlin et al.
patent: 2758504 (1956-08-01), Tindale
patent: 3101646 (1963-08-01), Dymott et al.
patent: 3728117 (1973-04-01), Heidenhahn et al.

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