OPTICAL SCANNER, PROJECTOR DEVICE, AND HEAD-UP DISPLAY DEVICE

• Main Author: AKANUMA GOICHI
• Format: Patent
• Language: English; Japanese
• Published: 11.01.2018
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; TRANSPORTING; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To enlarge an angle of view by increasing the ratio of an image drawing area in a light scanning range.SOLUTION: An optical scanner includes: a light source; a light deflector for deflecting light from the light source and making the light be scanned on a scanning target surface in a main-scanning direction and in a sub-scanning direction; a light detector for detecting the scanned light on the scanning target surface; a controller for controlling at least one of the operation of the light source and the operation of the light deflector on the basis of the timing when the light detector detected the light; a detection region 61 in an edge part of a light scanning range 60, which is a range where the light on the scanning target surface is scanned, at least in the main-scanning direction, the detection region being for detecting light by the light detector; and an image drawing area 62 used for drawing an image in the light scanning range 60, having a region adjacent to the detection region 61 in the main-scanning direction and a region adjacent to the detection region 61 in the sub-scanning direction.SELECTED DRAWING: Figure 4 【課題】光走査範囲における画像描画領域の割合を大きくして、画角を大きくする。【解決手段】光走査装置は、光源と、光源からの光を偏向して被走査面上で主走査方向および副走査方向に走査させる光偏向器と、被走査面上を走査した光を検出する光検出器と、光検出器が光を検出したタイミングに基づいて、光源の動作と光偏向器の動作との少なくとも一方を制御するコントローラと、を備える。そして、被走査面上の光が走査される範囲である光走査範囲６０の少なくとも主走査方向の端部に、光検出器により光を検出するための検出領域６１を有し、光走査範囲６０内の画像描画に用いる画像描画領域６２が、検出領域６１に対して主走査方向に隣接する領域と、検出領域６１に対して副走査方向に隣接する領域とを含む。【選択図】図４