SELF-DIMMING LED SYSTEM

To provide an in-use indicator that automatically adjusts a brightness level on the basis of an on-board ambient light level.SOLUTION: An LED system 200 includes a voltage adjustment circuit, an ambient light sensor 105, and an LED 109. The LED system 200 reduces illumination intensity of the LED 10...

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Bibliographische Detailangaben
Hauptverfasser: JON M FIFIELD, DANIEL P JACKSON, ANTON ZLATEV, BRIEN G MCCREA
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide an in-use indicator that automatically adjusts a brightness level on the basis of an on-board ambient light level.SOLUTION: An LED system 200 includes a voltage adjustment circuit, an ambient light sensor 105, and an LED 109. The LED system 200 reduces illumination intensity of the LED 109 in proportion to reduction of ambient light intensity. The ambient light intensity is detected by the ambient light sensor 105. The LED system 200 operates autonomously with reduced power under low illumination ambient light.SELECTED DRAWING: Figure 1 【課題】機内環境光レベルに基づいて自動的に輝度レベルを調節する使用中表示灯を提供する【解決手段】LEDシステム200は、電圧調整回路と、環境光センサ105と、LED109とを備える。LEDシステム200は、周囲の環境光強度の低減に比例して、LED109の照明強度を低減させる。周囲の環境光強度は、環境光センサ105によって検出される。LEDシステム200は、低照度環境光下において、低減された電力で自律的に動作する。【選択図】図1