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    • 3. 发明授权
    • Aspect corrected laser video projection
    • 方面校正激光视频投影
    • US09261759B1
    • 2016-02-16
    • US13601639
    • 2012-08-31
    • Menashe HaskinChristopher D. Coley
    • Menashe HaskinChristopher D. Coley
    • G03B21/14
    • H04N9/3185G03B17/54H04N9/3194
    • Techniques are described for compensating for distortion effects caused by projecting images to a surface that is non-perpendicular to a raster-scanning laser projector. Pixel size is modulated such that smaller pixels are projected to farther portions of the surface, and larger pixels are projected to nearer portions. Pixels within a raster scan line may have their lengths modulated through variation of a frequency of light source that generates the pixels, or through adjustment of a scan speed along the line. Pixel heights may be adjusted by modulating the distance between scan lines. Scan speed and distance between scan lines may be modified by controlling micromirrors incorporated into the laser projector for directing the light projection.
    • 描述了用于补偿由投影图像到非垂直于光栅扫描激光投影仪的表面引起的失真效应的技术。 像素尺寸被调制使得较小的像素被投影到表面的更远的部分,并且较大的像素被投影到更靠近的部分。 光栅扫描线内的像素可以通过产生像素的光源的频率的变化或通过调整沿着该线的扫描速度来调节它们的长度。 可以通过调制扫描线之间的距离来调整像素高度。 扫描线之间的扫描速度和距离可以通过控制结合到激光投影仪中的微型反射镜来引导光投影来进行修改。