作者: Tsutomu Araki,
期刊: Review of Scientific Instruments (AIP Available online 1995) 卷期: Volume 66, issue 1
页码: 43-47
ISSN:0034-6748
年代: 1995
DOI:10.1063/1.1146373
出版商: AIP
数据来源: AIP
摘要:
An accurate optical distance meter that features a pulsed laser diode as a light source and two avalanche photodiodes as detectors, is reported. A cascade connection of avalanche transistors drives the laser diode to emit a periodic output pulse of 0.8 ns rise time. The photodiode rise time was found to increase whenever the incident intensity decreased below a certain threshold. Measurement errors caused by this effect were corrected by numerical processing. The optical distance meter yielded a calibration error of 0.5 mm for a white paper target placed 1 m from the laser source. The distance meter was also utilized to profile the bottom of a plastic waterpipe. ©1995 American Institute of Physics.
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