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Patent Searching and Data


Title:
REFRACTIVE INDEX MEASUREMENT DEVICE AND REFRACTIVE INDEX MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2018/043194
Kind Code:
A1
Abstract:
In the present invention, an LED (3) emits light that includes a plurality of linearly-polarized-light components having different polarization directions. The light from the LED (3) enters one end of a waveguide member (4) having an elongated column shape, is totally reflected by side surfaces (4Aa, 4Ab) of the waveguide member (4) having metallic thin film (4B) that produces surface plasmon resonance partially formed thereon, and is then emitted from the other end. A polarizing plate (6) extracts a linearly-polarized-light component having a specific polarization direction from the light emitted by the waveguide member (4). A selection unit (7) selects the polarization direction of the linearly-polarized-light component extracted by the polarizing plate (6). A light-reception unit (8) detects the intensity of the linearly-polarized-light component of the light extracted by the polarizing plate (6). A measurement unit (10) measures the refractive index of a sample (12) on the basis of the light intensity detected by the light-reception unit (8). The waveguide member (4) has a plurality of planar side surfaces (4Aa, 4Ab) for which one of the plurality of linearly-polarized-light components included in the entering light is p-polarized and that each have different responses to p-polarized light.

Inventors:
HIGO Morihide (21-24 Korimoto 1-chome, Kagoshima-sh, Kagoshima 80, 〒8908580, JP)
MITSUSHIO Masaru (21-24 Korimoto 1-chome, Kagoshima-sh, Kagoshima 80, 〒8908580, JP)
Application Number:
JP2017/029871
Publication Date:
March 08, 2018
Filing Date:
August 22, 2017
Export Citation:
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Assignee:
KAGOSHIMA UNIVERSITY (21-24, Korimoto 1-chome Kagoshima-sh, Kagoshima 80, 〒8908580, JP)
International Classes:
G01N21/41
Attorney, Agent or Firm:
KIMURA Mitsuru (2nd Floor, Kyohan Building 7, Kandanishiki-cho 2-chome, Chiyoda-k, Tokyo 54, 〒1010054, JP)
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