Optical: systems and elements – Lens – With variable magnification
Patent
1995-06-07
1996-06-25
Sikes, William L.
Optical: systems and elements
Lens
With variable magnification
359721, 359739, 359789, G02B 1514, G02B 310, G02B 900, G02B 914
Patent
active
055305954
ABSTRACT:
A variable focus color corrected field lens for accepting rays having a divergence of from 0, wherein the rays are collimated, to a divergence of 10 milliradians full angle and directing the rays to the same point of an optical system. The present lens is corrected for wavelengths from the ultraviolet to the red spectrum of wavelengths for directing the wavelengths to the same point.
REFERENCES:
patent: 1347673 (1920-07-01), Bishop
patent: 5087990 (1992-02-01), Maruyama
patent: 5210646 (1993-05-01), Mercado et al.
Freedenberg Candace J.
Herring Frederick A.
Ziemins Uldis A.
Ahsan Aziz M.
International Business Machines - Corporation
Mai Huy
Sikes William L.
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