提高摄像机后聚焦调整精度的实践

The Practice for Improving the Adjustment Accuracy of the Back Focus of Pick-up Camera

本文分析了摄像机后聚焦调整的一般方法存在的缺陷,给出了利用示波器测量亮度幅度确定后聚焦位置的方法,使摄像机后聚焦的调整更为准确可靠。

This paper analyses some disadvantageousnesses developed when carrying out back focus adjustment of the with common methods and proposes a new advantageous method, in which an oscilloscope is employed to measure the brightness of the pick-up camera for determining its back focus position. This method leads a more accurary adjust-ment of the camera.