To provide a scan device and a scan method which enable stable scan of a laser beam.SOLUTION: A scan device comprises: a MEMS mirror mechanism which oscillates a mirror with a first axial line as a center line and oscillates a mirror with a second axial line as a center line; and a control unit which generates a first drive signal for oscillating the mirror with the first axial line as a center line and a second drive signal for oscillating the mirror with the second axial line as a center line. The control unit generates a second signal element constituting the second drive signal so as to correspond to a first signal element during a period equal to or shorter than one cycle in the first drive signal and repeats generation of the second signal element during a light emission period of an approaching period and a return period in one oscillation of the mirror with the second axial line as a center line to thereby generate the first drive signal and the second drive signal.SELECTED DRAWING: Figure 2

    【課題】安定したレーザ光の走査が可能となる走査装置及び走査方法を提供する。【解決手段】走査装置は、第1軸線を中心線としてミラーを揺動させると共に、第2軸線を中心線としてミラーを揺動させるMEMSミラー機構と、第1軸線を中心線としてミラーを揺動させるための第1駆動信号、及び第2軸線を中心線としてミラーを揺動させるための第2駆動信号を生成する制御部と、を備える。制御部は、第1駆動信号における1周期以下の期間の第1信号要素に対応するように、第2駆動信号を構成する第2信号要素を生成し、第2軸線を中心線とするミラーの1回の揺動のうち往路期間及び復路期間の点灯期間において、第2信号要素の生成を繰り返すことで、第1駆動信号及び第2駆動信号を生成する。【選択図】図2


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    Title :

    SCAN DEVICE AND SCAN METHOD


    Additional title:

    走査装置及び走査方法


    Contributors:

    Publication date :

    2019-10-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B81B Mikrostrukturbauelemente oder -systeme, z.B. mikromechanische Bauelemente , MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES / 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 / H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen



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