Methods And Apparatus For Obtaining Clear Images Of High Speed Moving Objects

Yang Jinyu; Lu Renxia

doi:10.1117/12.969202

7 June 1989 Methods And Apparatus For Obtaining Clear Images Of High Speed Moving Objects

Yang Jinyu, Lu Renxia

Proceedings Volume 1032, 18th Intl Congress on High Speed Photography and Photonics; (1989) https://doi.org/10.1117/12.969202
Event: 18th International Congress on High Speed Photography and Photonics, 1988, Xi'an, Shaanxi, China

Abstract

Most of the present high speed pickup cameras consist of a CCD pickup camera and an additional mechanical shutter or electronic shutter. It is well accepted to develop the CCD's own shutter function directly without an additional shutter. In this paper is presented a method to develop the CCD's own shutter function. It starts with shortening the "useful charge integrating" time of the pickup camera per field for the shortened field integrating pulse to act as the electronic shutter. At the same time, the "useless integrating charge" except the "useful integrating" time per field must be cleared by the method of "photographic plate clearing" to set the "useful integrating" charge on the clean photographic plate which has been cleared, thus accomplishing the transformation of an ordinary CCD pickup camera into a high speed camera with its own electronic shutter. After analysing the performance of the newly-developed high speed pickup camera, two examples of the application are given, especially when this pickup camera is used to take a picture of a body which spins at high speed, a clear, slowly spinning or even relatively still image can be obtained directly and it is unnecessary to shoot quickly and play slowly with the aid of a videorecorder.

Citation Download Citation

Yang Jinyu and Lu Renxia "Methods And Apparatus For Obtaining Clear Images Of High Speed Moving Objects", Proc. SPIE 1032, 18th Intl Congress on High Speed Photography and Photonics, (7 June 1989); https://doi.org/10.1117/12.969202

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