May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..566..369n&link_type=abstract
OBSERVING ULTRAHIGH ENERGY COSMIC RAYS FROM SPACE AND EARTH: International Workshop. AIP Conference Proceedings, Volume 566, pp
Physics
Optical Testing Techniques
Scientific paper
We have used a LED (Light Emitting Diode) in the Ronchi tester in order to obtain two main improvements: a) we can choose one of 2 wavelength bands to illuminate and record the ronchigram, and b) we can change the irradiance of the illumination source according to the optical system under test and the detector array. This can be done by using an adequate electronic circuit. .
Cordero-Davila Alberto
Cuautle-Cortes J.
Nuñez-Alfonso J. M.
Vergara-Limon S.
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