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US 2014/0110733 A1Published application
Ultraviolet reflective silicone compositions, reflectors, and light sources incorporating the same
AssigneeOsram Sylvania Inc.
InventorMaxim N. Tchoul
Life of this patent
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Abstract
Disclosed herein are polysiloxane compositions that include a first polysiloxane and a second polysiloxane. The first and second polysiloxanes may be immiscible, and may exhibit differing refractive indices. The polysiloxane compositions may further include a curing agent and a catalyst. In some embodiments, the polysiloxane compositions significantly reflect light in at least the ultraviolet region of the electromagnetic spectrum. Reflectors and light emitting diode sources including the polysiloxane compositions are also disclosed.
Claims34
A polysiloxane composition, comprising:
- a first polysiloxane;
- a second polysiloxane;
- a curing agent;
- and
- a catalyst;
- wherein:
- said first and second polysiloxanes are immiscible with one another and differ in refractive index;
- and
- said polysiloxane composition reflects greater than 50 to about 100% of light in a first wavelength range, said first wavelength range extending from about 190 nm to about 400 nm.
6 more elements
An LED light source, comprising:
- at least one LED configured to emit primary light in a first wavelength range;
- and
- a reflector disposed to reflect said primary light,
- said reflector comprising a polysiloxane composition comprising:
- a first polysiloxane;
- a second polysiloxane;
- a curing agent;
- and
- a catalyst;
- wherein:
- said first and second polysiloxanes are immiscible with one another and differ in refractive index;
- said reflector reflects greater than 50 to about 100% of light in said first wavelength range;
- and
- said first wavelength range extends from about 190 nm to about 400 nm.
11 more elements
Dependencies are inferred from the claim text.