PROBLEM TO BE SOLVED: To provide a head-up display device capable of providing quick dimming control and generating images with stable brightness.SOLUTION: A head-up display device has a dimming unit 20 for dimming laser light located between an LD and a light scanning unit 40. A main control unit generates a dimming digital signal Sa (pulse signal) for controlling dimming by the dimming unit 20. A dimming control unit converts the dimming digital signal Sa from the main control unit into a dimming analog signal Sb, and includes a first waveform conversion section for converting the dimming digital signal Sa into the analog signal and a second waveform conversion section which is connected to an output side of the first waveform conversion section and is designed to set a ripple voltage Vr to a lower level than that of the first waveform conversion section.
【課題】迅速に調光制御可能であり、安定した輝度の画像を生成することができるヘッドアップディスプレイ装置を提供する。【解決手段】レーザー光を調光する調光部20を、LDと光走査部40との間に配置し、主制御部は、調光部20の調光を制御する調光デジタル信号Sa(パルス信号)を出力し、調光制御部は、主制御部からの調光デジタル信号Saを調光アナログ信号Sbに変換し、調光制御部は、調光デジタル信号Saをアナログ信号に変換する第1波形変換部と、第1波形変換部の出力側に接続され、第1波形変換部よりリップル電圧Vrを低く設定した第2波形変換部と、を有する。【選択図】図2
HEAD-UP DISPLAY DEVICE
ヘッドアップディスプレイ装置
2015-11-05
Patent
Elektronische Ressource
Japanisch
IPC: | G09G Anordnungen oder Schaltungen zur Steuerung oder Regelung von Anzeigevorrichtungen mit statischen Mitteln zur Darstellung veränderlicher Informationen , ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS |
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