Sensor window to provide different opacity and transmissivity at different spectral ranges
A sensor window may include a substrate and a set of layers disposed onto the substrate. The set of layers may include a first subset of layers of a first refractive index and a second set of layers of a second refractive index different from the first refractive index. The set of layers may be associated with a threshold transmissivity in a sensing spectral range. The set of layers may be configured to a particular color in a visible spectral range and may be associated with a threshold opacity in the visible spectral range.
1. A system, comprising:
a set of optical sensors disposed on or in a substrate; and
a sensor window deposited in an optical path of the set of optical sensors,
the sensor window including:
at least one layer configured to provide greater than 80% opacity at a first spectral range and for angles of incidence from approximately 0 degrees to approximately 45 degrees and to provide greater than 80% transmissivity at a second spectral range, which is different from the first spectral range, and for angles of incidence from approximately 0 degrees to approximately 45 degrees.
2. The system of claim 1 , wherein the system is included in a vehicle and is color-matched to within 1 ΔE of a body color of the vehicle.
3. The system of claim 1 , wherein the system is at least one of: a biometric system, a security system, a communications system, a health monitoring system, an object identification system, or a spectroscopic identification system.
4. The system of claim 1 ,
wherein the at least one layer is configured to a particular color in a visible spectral range, and
wherein the particular color is a plurality of colors arranged in a particular pattern or to form a particular iconography in the visible spectral range.