High-speed videography with solid state devices

Rudolf K.F. Germer

doi:10.1117/12.424282

17 April 2001 High-speed videography with solid state devices

Rudolf K.F. Germer

Proceedings Volume 4183, 24th International Congress on High-Speed Photography and Photonics; (2001) https://doi.org/10.1117/12.424282
Event: 24th International Congress on High-Speed Photography and Photonics, 2000, Sendai, Japan

Abstract

The speed to read out the data of a CCD camera limits applications for high speed videography. If the size of a picture is reduced and if parts of the sensitive area of a CCD are used to store the pictures before reading out, an picture sequence can be stored on a CCD and is available as a standard tv-signal. Cavitation bubbles in an ultrasonic wave have been investigated with a 100 kHz frame rate. Faster frame rates are possible, when a computer is used to separate the lines of agglomerated pictures which are produced by an array of cylinder lenses. An illuminated line is shifted electronically to the neighbored dark field and the next lines can be illuminated. Five pictures in 1 microsecond are realized. An ultrasonic plane wave in a transparent material is an array of cylinder lenses which moves with some mm/microsecond. Four to five pictures with good quality can be taken in a period of the sound wave. A sequence of 200 ns in total is demonstrated with a CCl₄ shutter. With a laser modulator crystal a shutter time of 8 ns for each picture was realized. Ideas for faster shutters are presented.

Citation Download Citation

Rudolf K.F. Germer "High-speed videography with solid state devices", Proc. SPIE 4183, 24th International Congress on High-Speed Photography and Photonics, (17 April 2001); https://doi.org/10.1117/12.424282

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