Wavelength-Specific Optical Switch
First Claim
1. A film for regulating reflection of incident radiant energy comprisinga first optical material layer;
- anda second optical material layer;
a temperature sensitive optical material positioned between the first optical layer and the second optical layer.
1 Assignment
0 Petitions
Accused Products
Abstract
A wavelength-specific optical switch combines one or more tunable filters and bandblock reflectors such that the absorption or reflection of selected wavelength bands in the optical spectrum (visible, near infrared, or near ultraviolet) can be switched on and off. The wavelength switch is programmable, multifunctional, general-purpose, solid-state optical filter. The wavelength switch may serve as a tunable notch or bandblock filter, a tunable bandpass filter, a tunable highpass or lowpass filter, or a tunable band reflector. The wavelength switch has particular, but not exclusive, application in optics as a filter, band reflector, and as a means of isolating particular wavelengths or wavelength bands from a collimated light stream for transmission to, or rejection from, a sensor.
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Citations
10 Claims
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1. A film for regulating reflection of incident radiant energy comprising
a first optical material layer; - and
a second optical material layer; a temperature sensitive optical material positioned between the first optical layer and the second optical layer. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10)
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3. The film of claim 24, wherein
the first optical material layer reflects up to 50% of the incident radiant energy and transmits a majority of non-reflected radiant energy; - and
the second optical material layer reflects up to 100% of radiant energy transmitted by the first optical material layer when the temperature sensitive optical material is above the threshold temperature and transmits up to 100% of radiant energy transmitted by the first optical material layer when the temperature sensitive optical material is below the threshold temperature.
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Specification