Recordable optical element using low absorption materials

Details Recordable optical element using low absorption materials Recordable optical element using low absorption materials

1995-06-07

1996-12-17

Ryan, Patrick

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428 642, 428 644, 428 645, 428 646, 428412, 428457, 428913, 4302701, 43027011, 4304951, 430945, 369283, 369288, B32B 300

Patent

active

055851584

ABSTRACT:
There is disclosed a recordable optical element that has a substrate and on the surface of the substrate, a recording layer and a light reflecting layer. The recording layer has a material with the formula Te.sub.a Ge.sub.b C.sub.c H.sub.d O.sub.e wherein a, b, c, d, and e are atomic percents and (c+d)>40, d>10, a>5, b>5, and e.gtoreq.0 such that a+b+c+d+e=100; and the reflecting layer and the recording layer being selected such that the element R.sub.max or R.sub.min (element reflectivity) is about or greater than 70% at about 780 nm.

REFERENCES:
patent: 4940618 (1990-07-01), Hamada et al.
patent: 4985349 (1991-01-01), Ohkawa et al.
patent: 4990387 (1991-02-01), Ohkawa
patent: 5013635 (1991-05-01), Ohkawa et al.
patent: 5063096 (1991-11-01), Kohara et al.
patent: 5102708 (1992-04-01), Matsubara et al.
patent: 5208088 (1993-05-01), Tominaga et al.
patent: 5238722 (1993-08-01), Yashiro et al.
Optical Recording, Allan B. Marchant (1990).

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