Patent ID: 11921203
Assignee: THE BOEING COMPANY
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A system for detecting presence of an object, the system comprising:
a sensor configured to emit signals having a predefined wavelength and to detect a reflection of the signals having the predefined wavelength;
a reflective surface positioned relative to the sensor such that the signals emitted by the sensor are directed toward the reflective surface; and
a filter associated with the reflective surface and positioned relative to the sensor such that the signals emitted by the sensor are also directed toward the filter, wherein the filter is configured to attenuate at least signals having the predefined wavelength, and wherein the filter comprises a bandpass filter that is also configured to allow visible light to pass therethrough with less attenuation than that experienced by the signals having the predefined wavelength,
wherein the sensor is also configured to provide an output that at least partially controls operation of a system in response to detection of the reflection of the signals having the predefined wavelength.