Reduced Size Optical Coupler for Fluorescence Detection
First Claim
Patent Images
1. An optical system comprising:
- a first filter adapted to reflect light emitted from a light-emitting diode to illuminate a fluorescent body, and further adapted to transmit light emitted from the fluorescent body; and
a second filter adapted to separate light transmitted by the first filter into signal band light and reference band light.
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Abstract
Optical systems are disclosed for use in identifying an analyte, such as glucose in blood or interstitial fluid (ISF), using a biomaterial, such as glucose binding protein (GBP), that is brought into contact with the analyte. An optical system includes a first filter adapted to reflect light emitted from a light-emitting diode to illuminate a fluorescent body, and further adapted to transmit light emitted from the fluorescent body, and a second filter adapted to separate light transmitted by the first filter into signal band light and reference band light.
11 Citations
21 Claims
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1. An optical system comprising:
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a first filter adapted to reflect light emitted from a light-emitting diode to illuminate a fluorescent body, and further adapted to transmit light emitted from the fluorescent body; and a second filter adapted to separate light transmitted by the first filter into signal band light and reference band light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An optical system comprising:
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a first filter adapted to reflect light emitted from a light-emitting diode to illuminate a fluorescent body, and further adapted to transmit light emitted from the fluorescent body; and a second filter adapted to separate light transmitted by the first filter into a first beam and a second beam. - View Dependent Claims (13, 14, 15, 16, 17)
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18. An optical coupler comprising:
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a fiber adapted to contact a fluorescent body; a light-emitting diode; a first filter adapted to reflect light emitted from the light-emitting diode to illuminate the fluorescent body through the fiber, and further adapted to transmit light emitted from the fluorescent body; a second filter adapted to separate light transmitted by the first filter into signal band light and reference band light; and a photodiode adapted to receive at least one selected from the set consisting of signal band light and reference band light transmitted by the second filter. - View Dependent Claims (19, 20, 21)
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Specification