Thin-Probe Pulsed-Light Photometer for Measurement and Calibration of Timing and other Pulsed-Light Sources

The apertures of timing blocks, by which range-timing signals are “written” on the film record, are inaccessible for normal photometry. Measurements of this type are made with a new thin-probe pulsed photometer sensitive to 0.01 fL and versatile to use. The photometer's circuitry is sensitive only to pulsating light signals; it will not respond to the continuous ambient light levels normally encountered in the field or laboratory. With expanded ranges and scales of light sensing and higher bandpass characteristics, the instrument predicts the film exposure at all film speeds and frame rates. Additional plug-in probes adapt the meter-amplifier for a variety of measurements in numerous fields where a small, sensitive pickup is required.

Print ISSN

0361-4573

Published

1969-09

Content type

Original Research

DOI

10.5594/J10812