Measurement of the position and displacement of a light beam with a spiral scanner
B Ahlborn1, D Dean, B H Bressler
1Departments of Physics, Engineering Physics, and Anatomy, The University of British Columbia, Vancouver, B. C., Canada.
The Review of Scientific Instruments
|October 1, 1978
Abstract:
A rotating spiral scanner interrupts an incident light beam for time intervals which are proportional to the position of the beam. This produces an electrical signal via a photodetector system which is independent of beam intensity. The device was used to measure the relative change in sarcomere spacing during the initial development of tension in a contracting frog sartorius muscle.
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