The position of the image and the amplitude variation in the optical field are associated with the focus and the distance from the object to the front focal plane of the lens system.

象的空间位置和光场振幅的变化与透镜系统的焦距以及物体距焦平面的位置有关。

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You get the most light output from this projector when the lamp power is set to high, and the zoom lens is set to maximum wide angle (shortest throw distance for any given image size).

您得到光输出从这台放映机当灯力量被设置对上流， 并且变焦镜头被设置对最大广角（最短的投掷距离为任何指定的图像大小） 。

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