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US 6,212,004 B1Granted
Reflector with directional control of visible and infra-red radiation
AssigneeApplied Coatings, Inc.
InventorsGrzegorz Stachowiak, Robert G. Naum
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AssigneeApplied Coatings, Inc.
InventorsGrzegorz Stachowiak, Robert G. Naum
Estimating the term…
A reflector providing directional control of visible and infra-red radiation emanating from a lamp held within the reflector. The reflector includes a first, optical interference coating applied to the interior surface of the dome-shaped portion of the reflector which is operable to transmit infra-red radiation while reflecting visible light. A second coating which is non-transmissive to IR radiation is applied to selected portions of the reflector body, and preferably to the area adjacent the neck portion of the reflector whereby components placed rearwardly of the reflector are protected from IR radiation. Various application techniques are disclosed, and the second coating may be applied in manners allowing for coding of reflectors of different types, as well as creating an aesthetically pleasing effect on surfaces illuminated by the IR radiation transmitted rearwardly of the reflector. Visible light escaping from the neck portion of prior art reflectors is also addressed by the present invention.
In a reflector for use with a lamp secured therein, said reflector formed of a transparent substrate having interior and exterior surfaces, said reflector including a first optical interference coating applied to said interior surface, said optical interference coating operable to reflect visible light while transmitting infra-red radiation through said reflector substrate from electromagnetic energy emanating from said lamp, wherein the improvement comprises a second coating applied to a predetermined portion of at least one of said exterior and interior surfaces, said second coating being substantially nontransmissive to infra-red radiation, the reflector including a main body portion and a neck portion each having interior and exterior surfaces, said second coating being applied to at least part of one of said interior and exterior surfaces of said main body portion, and the main body portion being in the shape of a dome, and wherein said second coating is applied in concentric rings about the full circumference of said dome.
In a reflector for use with a lamp secured therein, said reflector formed of a transparent substrate having interior and exterior surfaces, said reflector including a first optical interference coating applied to said interior surface, said optical interference coating being operable to reflect visible light while transmitting infra-red radiation through said reflector substrate from electromagnetic energy emanating from said lamp, wherein the improvement comprises a second coating applied to a predetermined portion of at least one of said exterior and interior surfaces, said second coating being substantially non-transmissive to infra-red radiation and wherein:
In a reflector for use with a lamp secured therein, said reflector formed of a transparent substrate having interior and exterior surfaces, said reflector including a first optical interference coating applied to said interior surface, said optical interference coating being operable to reflect visible light while transmitting infra-red radiation through said reflector substrate from electromagnetic energy emanating from said lamp, wherein the improvement comprises a second coating applied to a predetermined portion of at least one of said exterior and interior surfaces, said second coating being substantially nontransmissive to infra-red radiation and wherein:
In a reflector for use with a lamp secured therein, said reflector formed of a transparent substrate having interior and exterior surfaces, said reflector including a first optical interference coating applied to said interior surface, said optical interference coating being operable to reflect visible light while transmitting infra-red radiation through said reflector substrate from electromagnetic energy emanating from said lamp, wherein the improvement comprises a second coating applied to a predetermined portion of at least one of said exterior and interior surfaces, said second coating being substantially nontransmissive to infra-red radiation and wherein:
A method of making a reflector having a predetermined IR reflectance/transmittance ratio, said reflector having a main body portion having interior and exterior surfaces, said method comprising the steps of:
In a reflector for use with a lamp secured therein, the reflector formed of a transparent substrate having interior and exterior surfaces, the reflector including a first optical interference coating applied to the interior surface, the optical interference coating being operable to reflect visible light while transmitting infra-red radiation through the reflector substrate from electromagnetic energy emanating from the lamp, the reflector further including a main body portion, the improvement comprising a second coating applied to a predetermined portion of at least one of said exterior and interior surfaces, said second coating being substantially nontransmissive to infra-red radiation, said second coating being applied to at least part of one of said interior and exterior surfaces on the main body portion in concentric rings about a full circumference of the main body portion.
In a reflector for use with a lamp secured therein, said reflector formed of a transparent substrate having interior and exterior surfaces, said reflector including a first optical interference coating applied to said interior surface, said optical interference coating being operable to reflect visible light while transmitting infra-red radiation through said reflector substrate from electromagnetic energy emanating from the lamp, wherein the improvement comprises a second coating applied to a predetermined portion of at least one of said exterior and interior surfaces, said second coating being substantially nontransmissive to infra-red radiation and being comprised of at least two layers of different material, one of the at least two layers being comprised of a metal and another of the at least two layers being one of a metal nitride and a metal oxide deposited over said metal.
In a reflector for use with a lamp secured therein, said reflector formed of a transparent substrate having interior and exterior surfaces, said reflector including a first optical interference coating applied to said interior surface, said optical interference coating being operable to reflect visible light while transmitting infra-red radiation through said reflector substrate from electromagnetic energy emanating from the lamp, wherein the improvement comprises a second coating applied to a predetermined portion of at least open of said exterior and interior surfaces, said second coating being substantially nontransmissive to infra-red radiation and being comprised of at least two layers of different material including a first material and a second material, the first material being applied beneath the optical interference coating, and the second material being applied to one of the interior and the exterior surface of the reflector in overlying relationship to the first material.
A method of making a reflector having a predetermined IR reflectance/transmittance ratio, said reflector having a main body portion having interior and exterior surfaces, said method comprising the steps of:
Dependencies are inferred from the claim text.