Automotive lamp and control method for dmd
AssigneeKoito Manufacturing Co., Ltd.
InventorsToshihisa HAYAMI, Yuki USUDA
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Abstract
An illumination apparatus generates illumination light. A patterning device includes a digital micromirror device (DMD) configured to spatially modulate and reflect the illumination light according to a pattern signal. A DMD controller generates the pattern signal. The DMD controller generates a refresh pattern signal for repeatedly turning on and off micromirrors in a period in which the DMD is set to the enable state and the illumination light is turned off.
Claims10
An automotive lamp comprising:
- an illumination apparatus structured to generate illumination light;
- and
- a patterning device comprising a digital micromirror device (DMD) structured to spatially modulate and reflect the illumination light according to a pattern signal,
- wherein the automotive lamp is structured to execute a refresh operation in which micromirrors of the DMD are repeatedly switched on and off in a period in which the DMD is enabled and the illumination light is turned off.
A control method for a digital micromirror device (DMD) mounted on an automotive lamp, wherein the control method comprises:
- irradiating illumination light to the DMD, and supplying a pattern signal to the DMD, in a period in which the automotive lamp is turned on;
- and
- supplying a refresh pattern signal for instructing the DMD to repeatedly turn on and off micromirrors of the DMD in a turn-off period in which no illumination light is irradiated.
Dependencies are inferred from the claim text.