Appeal No. 2004-2148
Application No. 09/362,397
depends at said interface, further comprising at least one
intermediate layer between said two solid material interfaces,
said at least one intermediate layer transmitting said radiation,
said information being readable from a least one of said solid
material interfaces by means of radiation of predetermined
wavelength, the method comprising the step of:
depositing in said intermediate layer at least one layer
at least predominantly comprising SivNwHu by means of a
reactive vacuum coating process in a process atmosphere, an
optimum of transmission of said layer and of a refractive index
of the material of said layer being achieved by adjusting the
concentration of a reactive gas in the process atmosphere,
which reactive gas comprises N and H.
107. A method for producing an information carrier
comprising at least two solid material interfaces adapted to
contain information and whereat the information is stored by
local modulation of at least one solid material characteristic,
from which characteristic reflection of electromagnetic
radiation depends at said interface, further comprising at least
one intermediate layer between said two solid material
interfaces, said at least one intermediate layer transmitting
said radiation, said information being readable from a least
one of said solid material interfaces by means of radiation of
predetermined wavelength, the method comprising the step
of:
depositing the intermediate layer to have a layer system
with at least one dielectric layer and with an optical thickness
which, at least in a first approximation, is m.8o/4, wherein m is
an integer of at least unity and is uneven and wherein 8o
designates the wavelength of said radiation which is
transmitted through said at least one dielectric layer and
wherein, depending from said m being an integer, m being
reduced by an amount of up to 0.6 or increased by an
amount of up to 0.2.
CITED PRIOR ART
-3-
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