Oscillators – Relaxation oscillators
Patent
1976-09-24
1978-07-11
Corbin, John K.
Oscillators
Relaxation oscillators
331 945G, 252300, G02B 528
Patent
active
040998401
ABSTRACT:
A multilayer reflector of which the last layer most remote from the substrate and having a high refractive index is vapor-deposited from a mixture containing a metal or oxide of an element from group 4b of the periodic table and a metal oxide from the group of beryllium oxide, magnesium oxide and calcium oxide, is particularly resistant to hydrogen and ultraviolet light and is hence suitable for application in a laser which is to have a long life.
REFERENCES:
patent: 2904452 (1959-09-01), Reichelt
patent: 3851973 (1974-12-01), Macek
patent: 3853386 (1974-12-01), Ritter et al.
patent: 3936768 (1976-02-01), Ichinose
patent: 4009453 (1977-02-01), Mahlein
Kryzhanovskii et al., "Thin Microcomposite Layers . . . ", Soviet Journal of Optical Technology, vol. 42, No. 12, Dec. 1975, pp. 741-742.
Gielens Wilhelmus Adrianus Jacobus
Pasmans Johannes Maria Marinus
VAN DER Wal Johannes
Corbin John K.
Lee John D.
Spain Norman N.
Trifari Frank R.
U.S. Philips Corporation
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