1 April 1991 Auto-focus video camera system with bag-type lens
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Proceedings Volume 1358, 19th Intl Congress on High-Speed Photography and Photonics; (1991); doi: 10.1117/12.23988
Event: 19th International Congress on High-Speed Photography and Photonics, 1990, Cambridge, United Kingdom
Abstract
An auto focus video camera system using a bagtype lens was developed. The bagtype lens was formed by pasting two plastic films on a ling spacer and by filling with liquid. Its focus could be controlled quite freely by changing the volume of liquid filled. Focus control signal was obtained by differentiating the CCD video signal. A simple object was brought into the focus automatically within about 20 seconds in this system.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Norio Sugiura, Shinzo Morita, "Auto-focus video camera system with bag-type lens", Proc. SPIE 1358, 19th Intl Congress on High-Speed Photography and Photonics, (1 April 1991); doi: 10.1117/12.23988; https://doi.org/10.1117/12.23988
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KEYWORDS
Video

Cameras

Imaging systems

Liquids

Charge-coupled devices

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