Apparatus for evaluating beacon lights, in particular on runways

Details Apparatus for evaluating beacon lights, in particular on runways Apparatus for evaluating beacon lights, in particular on runways

1993-02-24

1994-05-24

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Combined with diverse-type device

250239, H01J 4014

Patent

active

053151062

ABSTRACT:
The present invention relates to apparatus for in-situ evaluation of the light flux of narrow and intense light beams, in particular those from the beacon lights of airport runways and taxiways. It comprises a closed box mounted in a pod placed on a moving chassis, the box has a translucent front face that diffuses the light flux from the beam to be measured omni-directionally inside the box, and another face having high diffusing reflection power that closes the box and provides both reflection and diffusion of the light in uniform manner towards a photoelectric sensor whose sensitive portion is disposed close to the front face, but facing said diffusing reflection face.

REFERENCES:
patent: 3746867 (1973-07-01), Phela, Jr. et al.
patent: 4328545 (1982-05-01), Halsall et al.

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