Differential scan imaging systems and methods
First Claim
1. A fluorescence imaging system, comprising:
- a sample platform; and
an illumination and detection system, including;
an illumination system that provides a beam of excitation light from a source to a targeted area on the sample platform, wherein the targeted area includes a fluorescent material, and Wherein the excitation light includes light having an excitation wavelength of the fluorescent material;
a sensor adapted to detect light and having an array of sensing locations; and
imaging optics arranged and configured to image light emanating from the sample platform onto the sensor,wherein fluorescent light emitted from the fluorescent material in the targeted area is imaged onto a first portion of the sensor comprising a first plurality of the sensing locations and background light from a re ion proximal to the targeted area on the platform is simultaneously imaged onto a second portion of the sensor comprising a second plurality of the sensing locations different from the first plurality of the sensing locations, wherein the region proximal to the targeted area. on the platform is not directly illuminated by the beam of excitation light, and wherein the background light includes scattered excitation light, andwherein a second signal detected by the second portion of the sensor is subtracted from a first signal detected by the first portion of the sensor to produce a. background-reduced signal, wherein the first signal and the second signal are simultaneously detected.
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Accused Products
Abstract
Systems and methods for producing background-reduced fluorescence imaging signals include an illumination system that provides illumination light from an illumination source to a targeted area on the sample platform, a sensor adapted to detect light and having an array of sensing locations, and collection optics arranged and configured to project light emanating from the sample platform onto the sensor. In typical operation, light from the targeted area is projected onto a first portion of the sensor comprising a first plurality of the sensing locations and light from proximal to the targeted area on the platform is projected onto a second portion of the sensor comprising a second plurality of the sensing locations, and a second signal detected by the second portion of the sensor is subtracted from a first signal detected by the first portion of the sensor to produce a background-reduced signal, e.g., a signal with reduced background related noise.
16 Citations
27 Claims
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1. A fluorescence imaging system, comprising:
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a sample platform; and an illumination and detection system, including; an illumination system that provides a beam of excitation light from a source to a targeted area on the sample platform, wherein the targeted area includes a fluorescent material, and Wherein the excitation light includes light having an excitation wavelength of the fluorescent material; a sensor adapted to detect light and having an array of sensing locations; and imaging optics arranged and configured to image light emanating from the sample platform onto the sensor, wherein fluorescent light emitted from the fluorescent material in the targeted area is imaged onto a first portion of the sensor comprising a first plurality of the sensing locations and background light from a re ion proximal to the targeted area on the platform is simultaneously imaged onto a second portion of the sensor comprising a second plurality of the sensing locations different from the first plurality of the sensing locations, wherein the region proximal to the targeted area. on the platform is not directly illuminated by the beam of excitation light, and wherein the background light includes scattered excitation light, and wherein a second signal detected by the second portion of the sensor is subtracted from a first signal detected by the first portion of the sensor to produce a. background-reduced signal, wherein the first signal and the second signal are simultaneously detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 26)
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14. A fluorescence imaging method, comprising:
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illuminating a targeted area of a sample platform with a beam of excitation light, wherein the targeted area includes a fluorescent material, and wherein the excitation light includes light having an excitation wavelength of the fluorescent material; imaging light emanating from the sample platform onto a sensor having an array of sensing locations, wherein fluorescent light emitted from the fluorescent material in the targeted area is imaged onto a first portion of the sensor comprising a first plurality of the sensing locations and background light from a region proximal to the targeted area on the platform is simultaneously imaged onto a second portion of the sensor comprising a second plurality of the sensing locations different from the first plurality of the sensing locations, and wherein the region proximal to the targeted area on the platform is not directly illuminated by the beam of excitation light, and wherein the background light includes scattered excitation light; and subtracting a second signal detected by the second portion of the sensor from a first signal detected by the first portion of the sensor to produce a background-reduced signal, wherein the first signal and the second signal are simultaneously detected. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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27. A fluorescence imaging scanner, comprising:
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a sample platform; and an illumination and detection system, including; an illumination system that provides a beam of excitation light from a source to a targeted area on the sample platform, wherein the targeted area includes a fluorescent material, and wherein the excitation light includes light having an excitation wavelength of the fluorescent material; sensor adapted to detect light and having an array of sensing locations; and imaging optics arranged and configured to image light emanating from the sample platform onto the sensor, wherein fluorescent light, emitted from the fluorescent material in the targeted area is imaged onto a first portion of the sensor comprising a first plurality of the sensing locations and background light from .a region proximal to the targeted area on the platform is simultaneously imaged onto a second portion of the sensor comprising a second plurality of the sensing locations different from the first plurality of the sensing locations, wherein the region proximal to the targeted area on the platform is not directly illuminated by the beam of excitation light, and wherein the background light includes scattered excitation light, and a scanning mechanism configured to move the sample platform or the illumination and detection system such that the targeted area is scanned along the sample platform over a plurality of scan positions; wherein, iteratively over the plurality of scan positions, a second signal is detected by the second portion of the sensor and a first signal is detected by the first portion of the sensor, wherein the first signal and the second signal are simultaneously detected at each scan position, and wherein the second signals are subtracted from the first signals to produce a background-reduced image of the plurality of scan positions of the sample platform.
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Specification