06-09-2018 дата публикации
Номер: US20180255617A1
Принадлежит:
A lighting device is provided that includes a lighting controller that controls a light emitter that emits illumination light. The lighting controller includes a first filter that converts a first signal waveform that is defined by a first piecewise linear curve and whose intensity repeatedly increases and decreases into a signal waveform having a smooth rounded curve, and outputs the converted signal waveform as a first output waveform. The lighting controller causes the light emitter to repeatedly increase and decrease the intensity of the illumination light in accordance with the first output waveform. 1. A lighting device , comprising:a lighting controller that controls a light emitter that emits illumination light,wherein the lighting controller:includes a first filter that converts a first signal waveform that is defined by a first piecewise linear curve and whose intensity repeatedly increases and decreases into a signal waveform defined by a smooth rounded curve, and outputs the converted signal waveform as a first output waveform; andcauses the light emitter to repeatedly increase and decrease an intensity of the illumination light in accordance with the first output waveform.2. The lighting device according to claim 1 , whereinthe lighting controller further includes a signal waveform generator that generates the first signal waveform by repeatedly superimposing a modulation waveform onto a first reference waveform and outputs the first signal waveform to the first filter,the first reference waveform is defined by a first single straight line or a second piecewise linear curve, andthe modulation waveform is defined by a third piecewise linear curve having a start point, an end point, and a peak between the start point and the end point.3. The lighting device according to claim 2 , whereinthe third piecewise linear curve has at least two points, including the peak, between the start point and the end point.4. The lighting device according to claim 3 , ...
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