PROJECTING DEVICE, AND TOF SENSOR AND DISTANCE IMAGE GENERATING DEVICE PROVIDED WITH SAME
A projecting device (10) is provided with an LED (15), an LED power source (16), and a drive circuit (10a). The LED (15) radiates light in a prescribed direction. The LED power source (16) supplies electric power to the LED (15). The drive circuit (10a) introduces a DC offset into a waveform of a dr...
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Main Authors | , , |
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Format | Patent |
Language | English French Japanese |
Published |
24.09.2020
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Subjects | |
Online Access | Get full text |
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Summary: | A projecting device (10) is provided with an LED (15), an LED power source (16), and a drive circuit (10a). The LED (15) radiates light in a prescribed direction. The LED power source (16) supplies electric power to the LED (15). The drive circuit (10a) introduces a DC offset into a waveform of a drive current modulated using a prescribed frequency, and inputs the same into the LED (15).
L'invention concerne un dispositif de projection (10) pourvu d'une DEL (15), d'une source d'alimentation de DEL (16) et d'un circuit d'attaque (10a). La DEL (15) émet de la lumière dans une direction prescrite. La source d'alimentation de DEL (16) fournit de l'énergie électrique à la DEL (15). Le circuit d'attaque (10a) introduit un décalage en continu dans une forme d'onde d'un courant d'attaque modulé à l'aide d'une fréquence prescrite, et entre ledit décalage dans la DEL (15).
投光装置(10)は、LED(15)と、LED電源(16)と、駆動回路(10a)とを備えている。LED(15)は、所定の方向へ光を照射する。LED電源(16)は、LED(15)へ電力を供給する。駆動回路(10a)は、所定の周波数で変調された駆動電流の波形を、DCオフセットさせてLED(15)に入力させる。 |
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Bibliography: | Application Number: WO2020JP04621 |