Patent ID: 11946814
Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
Field: Optics (Instruments)
Classification: CPC G  E | IPC E  F  G

Claim 9:
10. A window system, comprising:
a structure having a window, the window having a first side and a second side substantially parallel to the first side;
an optical grating operatively positioned on one of the first side and the second side, the optical grating being used to determine a temperature of an external environment of the window on the respective one of the first side and the second side;
a light source operatively positioned on one of the first side and the second side, the light source being configured to emit light toward the optical grating in a direction substantially parallel to one of the first side and the second side;
a detector operatively positioned to detect one or more wavelengths of the light after it has interacted with the optical grating; and
a processor operatively connected to the optical grating, the processor being configured to:
determine, using wavelength-temperature dependence data, the temperature of the external environment of the window on the respective one of the first side and the second side based on the detected one or more wavelengths.