LASER DRIVING DEVICE, METHOD FOR ADJUSTING PULSE WIDTH, AND SENSING MODULE

To simplify the configuration of a circuit and reduce the cost by making it unnecessary to use a precise clock to detect a pulse width in adjusting the pulse width when a light-emitting element emitted by a vertical resonator plane emission laser is pulse-driven.SOLUTION: The laser driving device according to the present technique includes: a driving circuit unit for causing a light-emitting element to be emitted by a vertical resonator plane emission laser to emit and be driven according to a pulse signal; a pulse width detection unit for detecting a pulse width of the pulse signal on the basis of the potential of a capacitor when the capacitor is charged on the basis of the pulse signal; and a control unit for controlling the pulse signal to adjust the pulse width according to the result of detection of the pulse width.SELECTED DRAWING: Figure 2 【課題】垂直共振器面発光レーザによる発光素子をパルス駆動する場合におけるパルス幅調整に関して、パルス幅の検出に高精度なクロックを用いることを不要として回路構成の簡略化及びコスト削減を図る。【解決手段】本技術に係るレーザ駆動装置は、垂直共振器面発光レーザによる発光素子をパルス信号に基づき発光駆動する駆動回路部と、パルス信号に基づきコンデンサを充電したときの該コンデンサの電位に基づいてパルス信号のパルス幅を検出するパルス幅検出部と、パルス幅の検出結果に基づいてパルス幅が調整されるように制御を行う制御部とを備えている。【選択図】図２