Patent ID: 9282617
Filing Date: 2016-03-08
CPC Classification: H05B

Claim Text:
1. An illumination system, comprising: an input interface, which is controllably switched between a first state and a second state; a phase angle control module electrically connected to an AC power source and the input interface, wherein when the input interface is at the first state, the phase angle control module modifies a voltage waveform of the AC power source to generate a delayed conduction angle in a half wave period of the voltage waveform of the AC power source; a lamp, which is controllable to emit light; and a driving module electrically connected to the phase angle control module and the lamp, wherein the driving module is stored with a control mode, which includes a default illumination mode and a luminance adjusting mode, and the driving module switches the control mode in accordance with the delayed conduction angle generated by the phase angle control module; if the control mode is switched to the default illumination mode, the lamp is driven to emit light with a default luminance; if the control mode is switched to the luminance adjusting mode, the lamp is driven to emit light with a variable luminance which is repeatedly and continuously regulated between a first luminance and a second luminance until the input interface is switched again, wherein the variable luminance at this time point of the input interface being switched is recorded to update the default luminance, and then the lamp is driven to emit light with the newly updated default luminance.