LASER LIGHT MONITORING DEVICE

PURPOSE:To exactly perform measurement of a part of the foot of power density distribution corresponding to a cut threshold value. CONSTITUTION:A measurement means 11 is provided with a laser light reflection plate 12, a power meter 13, a damper 14 and an operation device 15. The laser light 16 pass...

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Bibliographic Details
Main Author SHINONAGA HIDEYUKI
Format Patent
LanguageEnglish
Published 02.06.1995
Edition6
Subjects
COLORIMETRY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
PHYSICS
RADIATION PYROMETRY
TESTING
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Summary:PURPOSE:To exactly perform measurement of a part of the foot of power density distribution corresponding to a cut threshold value. CONSTITUTION:A measurement means 11 is provided with a laser light reflection plate 12, a power meter 13, a damper 14 and an operation device 15. The laser light 16 passes through a plurality of circular openings 12a or 12f different in diameter successively, is received by the power meter 13 and its outputs are measured. The power densities of lower power density parts are measured on the basis of the difference between the measurement results at the power meter 13 at the time when it passes through each circular opening 12a or 12f.
Bibliography:Application Number: JP19930286411