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Self-calibration of an optical-based sensor using a total internal reflection (TIR) signature
Self-calibration of an optical-based sensor using a total internal reflection (TIR) signature
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机译:使用全内反射(TIR)签名对基于光学的传感器进行自校准
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摘要
A surface plasmon resonance sensor or critical angle sensor has a reflecting surface which is optically flat and exposed to air on one side. Light reflecting from a sensing surface of the sensor which impinges on the reflecting surface at an angle which is less than the critical angle passes into the air whereas light which impinges at an angle which is equal to or greater than the critical angle is reflected onto a photodetector. The critical angle reflection from the reflecting surface provides a total internal reflection (TIR) characteristic which is used to calibrate the sensor.
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