LIGHT SOURCE DRIVING DEVICE AND DISTANCE MEASURING DEVICE

• Main Authors: HANADA KENICHI, MATSUDA TAKEHIRO, MIYANABE SHIYOUGO, FURUKAWA JUNICHI
• Format: Patent
• Language: English; Japanese
• Published: 01.02.2018
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; BASIC ELECTRIC ELEMENTS; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; DEVICES USING STIMULATED EMISSION; ELECTRICITY; GYROSCOPIC INSTRUMENTS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SURVEYING; TESTING

PROBLEM TO BE SOLVED: To shorten an interval of pulses output from a light source.SOLUTION: A light source driving device 20 includes: a plurality of capacitive elements 22; a power supply 21; and a discharge control unit 23. The plurality of capacitive elements 22 is parallel to each other and each of them supplies electric power to a light emitting element 10 at the time of discharge. The power supply 21 charges the plurality of capacitive elements 22. The discharge control unit 23 individually controls the timing at which the plurality of capacitive elements 22 discharges. The light emitting element 10 is, for example, a light source in a distance measuring device.SELECTED DRAWING: Figure 1 【課題】光源から出力されるパルスの間隔を短くすることが一例として挙げられる。【解決手段】光源駆動装置２０は、複数の容量素子２２、電源２１、および放電制御部２３を備える。複数の容量素子２２は互いに並列であり、かつ、それぞれが放電時に発光素子１０に電力を供給する。電源２１は、複数の容量素子２２を充電する。放電制御部２３は、複数の容量素子２２が放電するタイミングを個別に制御する。発光素子１０はたとえば距離測定装置における光源である。【選択図】図１