Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With antiglare or shading
Patent
1989-11-01
1991-10-08
Arnold, Bruce Y.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With antiglare or shading
351163, 359359, 359360, 359580, 359589, G02C 710, G02B 528, G02B 110
Patent
active
050549022
ABSTRACT:
A semi-reflecting layer is deposited on a transparent material as part of a technique for color enhancement in such a way that the reflectivity of the semi-reflecting layer may still be varied in order to control transmission of light and portions of the electromagnetic spectrum thereto over a broad range of frequencies. For purposes of color enhancement there is used in conjunction with the semi-reflecting layer a thin dielectric layer the thickness whereof is selected to make use of optical interference between light reflected from the outer surface of the dielectric layer and light reflected from the semi-reflecting layer.
REFERENCES:
patent: 2373249 (1945-04-01), Lurcott
patent: 2379790 (1945-07-01), Dimmick
patent: 2394533 (1946-02-01), Colbert et al.
patent: 2854349 (1958-09-01), Dreyfus et al.
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patent: 3679291 (1972-07-01), Apfel et al.
patent: 3978272 (1976-08-01), Donley
patent: 4022947 (1977-05-01), Grubb et al.
Scientific American, Dec., 1970, pp. 59-75.
Book by Herbert Mayer, "Physik Dunner Schichten", Teil L. Wissenschaftliche Verlagsgesellschaft m.b.H. Stuttgart, 1950 (pp. 293-296).
Arnold Bruce Y.
Parsons David R.
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