Method and apparatus for time-phased constant IR energy...

Radiant energy – Calibration or standardization methods

Reexamination Certificate

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C250S342000, C246S16900S

Reexamination Certificate

active

07026609

ABSTRACT:
The present invention comprises apparatus for calibrating a railway infrared hot box or hot wheel detector by delivering a desired radiant energy delta to the hot box detector. The apparatus comprises a solid state radiant energy source adapted to be positioned adjacent to the hot box detector being calibrated for emitting radiant energy along a path toward the hot box detector and a processor to cycle the solid state radiant energy source at a desired frequency and intensity between an on state and an off state to achieve the desired radiant energy delta.

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patent: 19501110 (1996-07-01), None

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