SPR sensor cell and immunoassay apparatus using the same
First Claim
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1. An SPR sensor cell comprising an optical waveguide, said optical waveguide comprising:
- a plate-shaped first clad serving as a lower support member;
a core provided on a top surface of said first clad; and
a second clad to cover said core, wherein a through hole is formed at a predetermined position of said second clad to communicate with a predetermined portion of said core, and wherein a predetermined thin metal film is formed on an exposed predetermined portion of said core surface corresponding to said through hole.
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Abstract
An SPR (surface plasmon resonance) sensor cell comprising: a light-transparent core; a clad covering the core and having a through hole at a predetermined position to communicate with the core; and a predetermined thin metal film formed on an exposed surface of the core corresponding to the through hole.
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Citations
35 Claims
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1. An SPR sensor cell comprising an optical waveguide, said optical waveguide comprising:
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a plate-shaped first clad serving as a lower support member;
a core provided on a top surface of said first clad; and
a second clad to cover said core, wherein a through hole is formed at a predetermined position of said second clad to communicate with a predetermined portion of said core, and wherein a predetermined thin metal film is formed on an exposed predetermined portion of said core surface corresponding to said through hole. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An SPR sensor cell comprising:
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at least two cores, each said core having a surface area serving as an SPR sensing portion;
a clad surrounding said cores except at a first end surface and a second end surface; and
at least one through hole formed in said clad so as to communicate simultaneously with at least two of said at least two SPR sensing portions. - View Dependent Claims (8, 9)
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10. An immunoassay apparatus comprising:
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an SPR sensor cell comprising;
at least two cores, each said core having a surface area serving as an SPR sensing portion;
a clad surrounding said cores except on two end surfaces; and
a through hole formed in said clad so as to communicate simultaneously with at least two of said SPR sensing portions;
a light source for emitting light into said cores; and
a spectrometer or photodiode for performing a wavelength distribution of the light emitted from said SPR sensor cell. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An immunoassay apparatus comprising:
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an SPR sensor cell having an SPR sensing portion and a through hole adjacent to said said sensing portion, wherein said through hole has a predetermined thickness dimension sufficient to permit said through hole to serve as a test material holding receptacle;
a light source for emitting light of a predetermined wavelength band into said SPR sensor cell; and
a light analyzing means for analyzing light which has passed through said SPR sensor cell, wherein said light source comprises a white LED lamp and said SPR sensor cell comprises at least two cores and clads surrounding said cores on all sides except two end surfaces, said immunoassay apparatus further comprising;
an optical fiber introducing light which has passed through said cores into said light analyzing means; and
an optical coupler passing light from one of said cores to said optical fiber. - View Dependent Claims (17)
a plurality of light sources, respectively corresponding to said at least two cores, wherein said plurality of light sources are successively turned on one after another so as to introduce light successively to said corresponding respective core.
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18. An immunoassay apparatus comprising:
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an SPR sensor cell having an SPR sensing portion and a through hole adjacent to said said sensing portion, wherein said through hole has a predetermined thickness dimension sufficient to permit said through hole to serve as a test material holding receptacle;
a light source for emitting light of a predetermined wavelength band into said SPR sensor cell; and
a light analyzing means for analyzing light which has passed through said SPR sensor cell, wherein said light source comprises a white LED lamp and said SPR sensor cell includes at least two cores arranged in a parallel manner on a plane, each said core surrounded by clads on all sides except two end faces, said light source is arranged in a vicinity of one of said two end faces of one of said SPR sensor cell cores, said light analyzing means arranged to receive light passing through the other of said two end faces, further comprising;
a mover to successively align each said core to said light source and said light analyzing means.
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19. An immunoassay apparatus comprising:
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an SPR sensor cell having an SPR sensing portion and a through hole adjacent to said said sensing portion, wherein said through hole has a predetermined thickness dimension sufficient to permit said through hole to serve as a test material holding receptacle;
a light source for emitting light of a predetermined wavelength band into said SPR sensor cell; and
a light analyzing means for analyzing light which has passed through said SPR sensor cell, wherein said light source comprises a white LED lamp and an end surface of said SPR sensor cell where said light is introduced possesses a surface characteristic that tends to suppress introduction of light except for an end surface of said core.
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20. An SPR sensor cell comprising:
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a core having a rectangular cross section for passing light from a predetermined light source, said core thereby having four side surfaces and two end surfaces;
an SPR sensing portion on a predetermined location of one of said four side surfaces of said core; and
at least two clads formed so as to surround said four side surfaces of said core excluding the SPR sensing portion, wherein two of said four side surfaces of said core have a low-reflection surface where a light reflection is lowered, said two side surfaces having said low-reflection surface are the two side surfaces other than said one side surface having said SPR sensing portion and a side surface opposite to said surface have said SPR sensing portion. - View Dependent Claims (22, 23, 24, 25, 26)
a SPR sensor cell disclosed in claim 20;
a light source for emitting a predetermined light into said core of said SPR sensor; and
a light analyzer for analyzing a wavelength distribution of the light which has passed through the core.
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21. An SPR sensor cell comprising:
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a core having a rectangular cross section for passing light from a predetermined light source, said core having an SPR sensing portion on one side surface thereof; and
at least two clads enshrouding said core excluding said SPR sensing portion, said at least two clads having a plurality of surfaces adjacent to said core, wherein said surfaces of said clads facing the core have a low reflection ratio where a light reflection is lower than a light reflection in said core.
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27. An SPR sensor cell comprising:
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at least one sheet-shaped core transmitting light from a light source;
at least one SPR sensing portion on a top surface of said core;
a first clad upon which is mounted said core; and
a second clad having a through hole at a position corresponding to said SPR sensing portion, such that said core is sandwiched between said first clad and said second clad. - View Dependent Claims (28, 29, 30, 31, 32)
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33. An immunoassay apparatus comprising:
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an SPR sensor cell comprising;
at least one sheet-shaped core transmitting light from a light source;
at least one SPR sensing portion on a top surface of said core;
a first clad upon which is mounted said core; and
a second clad having a through hole at a position corresponding to said SPR sensing portion, such that said core is sandwiched between said first clad and said second clad;
a light source for emitting light into the core of the SPR sensor cell; and
a light analyzing means for analyzing a wavelength distribution of the light emitted from the SPR sensor cell. - View Dependent Claims (34, 35)
a predetermined block member in the vicinity of the SPR sensor cell in at least one of before the light passes the SPR sensor and after the light passes the SPR sensor cell; and
an optical fiber for connecting the block member to the light source or to the light analyzing member, wherein an optical fiber fixing portion is formed in the block member corresponding to the core of the SPR sensor cell, and the optical fiber has an end portion covered with a ferrule, and fixed into the optical fiber fixing portion.
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Specification