Correcting lenses utilized in the manufacture of fluorescent scr

Details Correcting lenses utilized in the manufacture of fluorescent scr Correcting lenses utilized in the manufacture of fluorescent scr

1975-09-29

1977-10-04

Corbin, John K.

350194, 350211, 354 1, G02B 302

Patent

active

040521230

ABSTRACT:
The correcting lens comprises a plurality of regions which are formed at at least one portions of the effective surfaces on both sides of the lens by means of a plurality of border lines which are discontinuous in only one direction. The regions on one side are inclined in a direction different from that of the regions on the opposite side of the lens.

REFERENCES:
patent: 2082100 (1937-06-01), Dorey et al.
patent: 2999126 (1961-09-01), Harries et al.
patent: 3177397 (1965-04-01), Keeran
patent: 3628850 (1971-12-01), Yamazaki et al.

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