An optical fiber transformer as an optical shutter and a light source divider both, a shadowgraphic set as an image system and a polygonal cone as an image divider are employed to form a camera for high speed photography. One end of the fiber transformer is arranged in a row and other end is in a circle, and by means of a small high sensitive optical scanner, a laser beam is swept from one end to the other end of this row and flashed on the circle. A high speed shadowgraphic camera with multi-point light source rounded within 1 0mm in dia. is obtained. The framing rate will be 1 o6 pp or more and the exposure time of each frame will be O.8jts or less if an 1 KHz scanner is used. Sixteen shadowgrams can be obtained at a time. The distance between any two fibers can be adjusted individually to get the records with nonequal time interval to match the event under study. The high speed interferography will be made if the single mode fibers are used. The framing rate can also be increased by use of a faster scanner and a more power laser.

Date Published: 1 April 1991
PDF: 3 pages
Proc. SPIE 1358, 19th Intl Congress on High-Speed Photography and Photonics, (1 April 1991); doi: 10.1117/12.23966

Published in SPIE Proceedings Vol. 1358:
19th Intl Congress on High-Speed Photography and Photonics
Peter W. W. Fuller, Editor(s)