調光裝置

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

100139372

專利證號

I 450637

專利獲證名稱

調光裝置

專利所屬機關 (申請機關)

國立暨南國際大學

獲證日期

2014/08/21

技術說明

一種調光裝置，包含：一定電流器，提供一定值電流給一主發光體；一週期調整單元，輸出多個脈寬調變(PWM)信號來分別驅動多個次發光體，各PWM信號的導通週期是指一PWM週期內對應次發光體可導通時間所佔的比例；及一狀態產生器，產生一狀態計數，各計數值對應一種使該等次發光體呈現一特定混合光顏色的狀態，且暗示PWM信號關於該特定色的期望導通週期；其中，週期調整單元基於狀態計數調整該等PWM信號，使信號導通週期從前一狀態期望值轉換成目前狀態期望值，而改變該等次發光體的混合光，進而補償該主發光體的發光。 A dimming device includes: a constant current generator for generating a current to a main LED unit; a state generator for generating a state counting output having a counting value that is equal to one of continuous values respectively associated with different light-mixing states of a secondary LED unit; and an RGB modulation circuit operable to generate, based on the state counting output, multiple PWM signals with the same PWM cycle for driving respectively R,G, and B LEDs of the secondary LED unit such that the secondary LED unit is sequentially operated in the light-mixing states. The secondary LED unit emits a mixed light with an individual color in each of the different light-mixing states to compensate lighting of the main LED unit.

備註

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