Axial Illumination for Capillary Electrophoresis
First Claim
Patent Images
1. A method for analyzing samples comprising:
- directing excitation light into at least one housing configured to contain samples, wherein the excitation light is propagated within the housing by total internal reflection;
introducing the excitation light into the at least one housing through a wall of the at least one housing; and
collecting sample emissions using at least one NA enhancing optical element which has an index of refraction greater than the housing.
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Abstract
System and method for fluorescent light excitation and detection from samples to enhance the numerical aperture and/or reduce the cross-talk of the fluorescent light.
18 Citations
20 Claims
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1. A method for analyzing samples comprising:
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directing excitation light into at least one housing configured to contain samples, wherein the excitation light is propagated within the housing by total internal reflection; introducing the excitation light into the at least one housing through a wall of the at least one housing; and collecting sample emissions using at least one NA enhancing optical element which has an index of refraction greater than the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An sample illumination apparatus comprising:
a housing having an associated coupling optical element which receives excitation light and propagates the excitation light through the housing by total internal reflection wherein the coupling optical element has an index of refraction greater than that of the housing and whereby at least one sample contained in the housing is illuminated by the excitation light and emits a signal in response. - View Dependent Claims (10, 11, 12, 13)
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14. A method for analyzing samples comprising:
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directing non-coherent light into a housing configured to transport samples and propagate light wherein the housing is associated with a coupling optical element which introduces non-coherent light into the housing through a wall of the housing and wherein the coupling optical element has an index of refraction greater than an index of refraction of the housing; and detecting sample emissions resulting from the non-coherent light interacting with the samples transported in the housing. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification