Optical sensor packages employing cloaking layers
AssigneeMaxim Integrated Products, Inc.
InventorsJoy T. Jones, John Hanks, Arkadii V. Samoilov, Craig A. Easson
Life of this patent
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Abstract
An optical sensor package includes a substrate, a wall disposed upon the substrate, and a cover layer disposed on the wall. The substrate, the wall, and the cover layer at least partially define a cavity. The optical sensor package also includes a sensor disposed upon the substrate within the cavity. A cloaking layer is disposed upon to the cover layer. The cloaking layer is transmissive to at least a portion of a light spectrum and is configured to at least partially conceal the sensor. In some examples, the optical sensor package also includes a light source disposed upon the substrate within another cavity at least partially defined by the wall and the cover layer.
Claims17
An optical sensor package, comprising:
- a substrate;
- at least one wall disposed on the substrate;
- at least one glass layer disposed on the at least one wall, where the substrate, the at least one wall, and the at least one glass layer define a first cavity and a second cavity;
- at least one application specific integrated circuit disposed on the substrate and within the first cavity;
- at least one light source disposed on the substrate and within the second cavity;
- and
- a switchable layer disposed on the at least one glass layer, wherein the switchable layer comprises a thermochromic layer.
An optical sensor package, comprising:
- a substrate;
- at least one wall disposed on the substrate;
- at least one optically transparent layer disposed over the at least one wall, where the substrate, the at least one wall, and the at least one optically transparent layer define a first cavity and a second cavity;
- at least one application specific integrated circuit disposed on the substrate and within the first cavity;
- at least one light source disposed on the substrate and within the second cavity;
- at least one mirror layer disposed on the at least one optically transparent layer, where the at least one mirror layer obscures the optical sensor package;
- a switchable layer disposed on the at least one optically transparent layer, wherein the switchable layer comprises a thermochromic layer.
An optical sensor package, comprising:
- a substrate;
- at least one wall disposed on the substrate;
- at least one glass layer disposed on the at least one wall, where the substrate, the at least one wall, and the at least one glass layer define a first cavity and a second cavity;
- at least one application specific integrated circuit disposed on the substrate and within the first cavity;
- at least one light source disposed on the substrate and within the second cavity;
- a switchable layer disposed on the at least one glass layer;
- and
- at least one through-glass via disposed in the at least one glass layer, where the at least one through-glass via electrically connects the switchable layer with a redistribution layer disposed in the at least one wall.
Dependencies are inferred from the claim text.