To provide an optical scanner capable of reducing the accident that a user feels dazzling due to an abnormal light emission of a light source at startup.SOLUTION: The optical scanner includes: a light source; and a light quantity adjusting member 61 that changes the scan light quantity by changing a light reduction unit located on an optical path, of a plurality of light reduction units 61a and 61b having different light transmittances. The optical scanner optically scans a scan object surface using the light coming from the light source through the light quantity adjusting member 61. The optical scanner includes detecting means 65 for detecting the existence of the light quantity adjusting member 61 at a prescribed position. At startup, on the basis of the detection result by the detecting means 65, the optical scanner positions, on the optical path, a predetermined light reduction unit 61b, which is a predetermined light reduction unit having a transmittance other than a maximum transmittance, of the plurality of light reduction units 61a and 61b, and then starts the light emission of the light source.SELECTED DRAWING: Figure 7
【課題】起動時の光源の異常発光によってユーザーに眩しさを感じさせてしまうことを軽減することができる光走査装置を提供する。【解決手段】光源と、移動により、光透過率の異なる複数の減光部61a、61bのうち、光路上に位置する減光部を変えて走査光量を変化させる光量調整部材61とを有し、光源から光量調整部材61を経由した光を用いて走査対象面を光走査する光走査装置であって、光量調整部材61について所定位置に存在することを検知する検知手段65を有し、起動時に、検知手段65による検知結果に基づいて、複数の減光部61a、61bのうち、最大の透過率でない所定の減光部である所定減光部61bを光路上に位置させてから、光源の発光を開始する。【選択図】図7
OPTICAL SCANNER, IMAGE DISPLAY DEVICE, HEAD-UP DISPLAY, AND MOVING BODY
光走査装置、画像表示装置、ヘッドアップディスプレイ、及び移動体
2019-09-19
Patent
Elektronische Ressource
Japanisch
OPTICAL SCANNER, IMAGE DISPLAY DEVICE, HEAD-UP DISPLAY, AND MOVABLE BODY
Europäisches Patentamt | 2019
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