Surface plasmon resonance sensor
First Claim
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1. A surface plasmon resonance sensor comprising:
- a prism having parallel surfaces;
a light source provided on one surface of the prism;
a detecting means provided on the same surface where the light source is provided;
a metal thin film provided on the other surface of the prism, andat least one of light absorbing members provided in the prism for blocking light emitted from the light source at any angle except a predetermined angle so that the metal thin film is illuminated by the light emitted from the light source at the predetermined angle, and such light is totally reflected at the metal thin film so as to reach the detecting means.
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Abstract
A surface plasmon resonance sensor comprises a prism having parallel surfaces, a light source provided on one surface of the prism, a detecting means provided on the same surface where the light source is provided, a metal thin film provided on the other surface of the prism, and at least one of light absorbing members provided in the prism for blocking light emitted from the light source at any angle except a predetermined angle so that the metal thin film is illuminated by the light emitted from the light source at the predetermined angle, and such light is totally reflected at the metal thin film so as to reach the detecting means.
59 Citations
19 Claims
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1. A surface plasmon resonance sensor comprising:
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a prism having parallel surfaces; a light source provided on one surface of the prism; a detecting means provided on the same surface where the light source is provided; a metal thin film provided on the other surface of the prism, and at least one of light absorbing members provided in the prism for blocking light emitted from the light source at any angle except a predetermined angle so that the metal thin film is illuminated by the light emitted from the light source at the predetermined angle, and such light is totally reflected at the metal thin film so as to reach the detecting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A surface plasmon resonance sensor comprising:
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a semiconductor silicon substrate as a prism; a light source formed on one surface of the semiconductor silicon substrate and including an organic EL element or a light emitting diode for emitting light which transmits through the semiconductor silicon substrate toward at least the other surface of the semiconductor silicon substrate facing to the one surface thereof; a metal thin film formed at the other surface of the semiconductor silicon substrate to be illuminated by the light emitted from the light source and transmitting through the semiconductor silicon substrates; a photodiode formed on the one surface of the semiconductor silicon substrate by doping for receiving the light emitted from the light source and totally reflected at an interface between the semiconductor silicon substrate and the metal thin film, and a first light path formed in the semiconductor silicon substrate so that only the light emitted from the light source at a predetermined angle reaches the metal thin film. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification