LIGHT SOURCE DEVICE, DISPLAY UNIT, DISPLAY SYSTEM, MOVABLE BODY, AND LIGHT QUANTITY CONTROL METHOD

To make it possible to optimize a light quantity control range used for light quantity control.SOLUTION: A light source device according to an embodiment of the present invention comprises: a light source element 111 (an example of a light source) that outputs a laser beam; and a control circuit 300...

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Hauptverfasser: SAKAI KOJI, HIGUCHI MIHO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To make it possible to optimize a light quantity control range used for light quantity control.SOLUTION: A light source device according to an embodiment of the present invention comprises: a light source element 111 (an example of a light source) that outputs a laser beam; and a control circuit 300 that controls the quantity of the laser beam output from the light source element 111. The control circuit 300 sets a light quantity control range indicating the range of a current value used for controlling the light quantity, on the basis of an output from a photo detector 119 that detects the laser beam output from the light source element 111, and controls the quantity of the laser beam output from the light source element 111 in the set light quantity control range.SELECTED DRAWING: Figure 12 【課題】光量制御に用いる光量制御範囲が最適化することができる。【解決手段】本発明の一実施形態に係る光源装置は、レーザ光を出力する光源素子111(光源の一例)と、光源素子111から出力されるレーザ光の光量を制御する制御回路300と、を備える。そして、制御回路300は、光源素子111から出力されたレーザ光を検出する光検出器119からの出力に基づいて、光量の制御に用いる電流値の範囲を示す光量制御範囲に設定し、設定した光量制御範囲において光源素子111から出力されるレーザ光の光量を制御する。【選択図】図12