METHOD AND DEVICE FOR INFRARED RAY IMAGE PICKUP

PROBLEM TO BE SOLVED: To reduce deterioration in the image quality by selecting a ratio of light quantity incident onto an infrared ray sensor from a measured object through a scanning optical system to a light quantity of an image of the infrared ray sensor itself incident onto again the infrared r...

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Bibliographic Details
Main Author MUROFUSHI HIROSHI
Format Patent
LanguageEnglish
Published 28.03.1997
Edition6
Subjects
COLORIMETRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
RADIATION PYROMETRY
TESTING
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Summary:PROBLEM TO BE SOLVED: To reduce deterioration in the image quality by selecting a ratio of light quantity incident onto an infrared ray sensor from a measured object through a scanning optical system to a light quantity of an image of the infrared ray sensor itself incident onto again the infrared ray sensor through the reflection of the scanning optical system to be higher so as to suppress narcissus to be low. SOLUTION: An optical filter 2 whose transmissivity is is inserted obliquely onto an optical path for a scanning optical system 1 and an infrared ray sensor 3 to reduce the narcissus amount by the transmissivity of the optical filter. Furthermore, a face with a low reflectance is arranged to a reflection optical path of the optical filter so that the image of the infrared ray sensor reflected in the optical filter is not again made incident onto the infrared ray sensor.
Bibliography:Application Number: JP19950238526