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50.3: A Pseudo‐Photopic Light Sensor Control System for AMLCD Fluorescent Back Lights
Author(s) -
Weindorf P.
Publication year - 2000
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1832870
Subject(s) - photopic vision , brightness , fluorescent light , signal (programming language) , computer science , fluorescence , optoelectronics , materials science , optics , physics , retina , programming language
A pseudo‐photopic feedback back light control system has been developed for automotive AMLCD's which utilizes two low cost surface mount photodiodes. By utilizing a subtraction process, a pseudo‐photopic feedback signal is produced which can be used to control the back light inverter to the desired brightness level.