METER USING NEAR-INFRARED LED

PROBLEM TO BE SOLVED: To provide a meter which is sized capacble of being readily held in one hand, of being readily carried, and of accurately measuring the amount of moisture or sugar. SOLUTION: A meter which uses near-infrared LEDs includes an arithmetic circuit which irradiates a reference sampl...

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Main Authors KUMAGAI KOICHI, SHIMOMURA YUSUKE, HONMA TOSHINORI, TAKEDA TADAAKI, OKA KUNIHARU, SAWAYAMA KAZUHIRO, TAKAHASHI HIROYUKI, NEBUKA KAZUMI
Format Patent
LanguageEnglish
Published 04.06.2009
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Abstract PROBLEM TO BE SOLVED: To provide a meter which is sized capacble of being readily held in one hand, of being readily carried, and of accurately measuring the amount of moisture or sugar. SOLUTION: A meter which uses near-infrared LEDs includes an arithmetic circuit which irradiates a reference sample and a sample under test alternately by using two types of LED, namely an LED that emits near-infrared light, in a region overlapped with the wavelength of a near-infrared region absorption band of moisture, sugar, or the like and an LED that emits near-infrared light, in a region where the region of emission wavelength lies outside of the near-infrared region absorption band of moisture or sugar, and which thereby determines the amount of moisture or sugar, based on the difference in the intensity of respective transmitted beams of light. COPYRIGHT: (C)2009,JPO&INPIT
AbstractList PROBLEM TO BE SOLVED: To provide a meter which is sized capacble of being readily held in one hand, of being readily carried, and of accurately measuring the amount of moisture or sugar. SOLUTION: A meter which uses near-infrared LEDs includes an arithmetic circuit which irradiates a reference sample and a sample under test alternately by using two types of LED, namely an LED that emits near-infrared light, in a region overlapped with the wavelength of a near-infrared region absorption band of moisture, sugar, or the like and an LED that emits near-infrared light, in a region where the region of emission wavelength lies outside of the near-infrared region absorption band of moisture or sugar, and which thereby determines the amount of moisture or sugar, based on the difference in the intensity of respective transmitted beams of light. COPYRIGHT: (C)2009,JPO&INPIT
Author KUMAGAI KOICHI
SHIMOMURA YUSUKE
HONMA TOSHINORI
OKA KUNIHARU
TAKAHASHI HIROYUKI
TAKEDA TADAAKI
NEBUKA KAZUMI
SAWAYAMA KAZUHIRO
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– fullname: OKA KUNIHARU
– fullname: SAWAYAMA KAZUHIRO
– fullname: TAKAHASHI HIROYUKI
– fullname: NEBUKA KAZUMI
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Snippet PROBLEM TO BE SOLVED: To provide a meter which is sized capacble of being readily held in one hand, of being readily carried, and of accurately measuring the...
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SubjectTerms INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
Title METER USING NEAR-INFRARED LED
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