[특허]Frequency-multiplexed detection of multiple wavelength light for flow cytometry

Frequency-multiplexed detection of multiple wavelength light for flow cytometry 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01C-003/08 G01N-021/00
출원번호	UP-0931686 (2004-09-01)
등록번호	US-7612871 (2009-11-16)
발명자 / 주소	Cox, James A. Zook, J. David
출원인 / 주소	Honeywell International Inc
대리인 / 주소	Fredrick, Kris T.
인용정보	피인용 횟수 : 0 인용 특허 : 88

초록

A multiplexed set of light sources having outputs of light with various wavelengths which are combined into one beam. The beam may impinge a particle in a flow channel of a cytometer. The light leaving the flow channel may be sensed by a detector and the light distinguished according to wavelength.

대표청구항 ▼

What is claimed is: 1. A multiple wavelength optical system comprising: a plurality of light sources; a frequency modulator connected to each light source; a dichroic fold mirror having an element proximate to each light source, and an output of light directed to a target; an array of annular light detectors proximate to the target; and a frequency analyzer connected to the light detector; wherein the annular light detectors are isolated from each other by an annular area that is not sensitive to light such that each annular detector subtends its own prescribed angle and the annular detectors provide an electrical signal representing light impinging the detector at respective angles. 2. The system of claim 1, wherein: at least one light source of the plurality of light sources emits light having a wavelength different than the wavelength of light emitted by another light source; and the at least one light source emits light modulated with a frequency different from a frequency that light emitted by another source is modulated with. 3. The system of claim 2, further comprising: a frequency analyzer connected to the array of detectors; and wherein signals caused by light emitted by the at least one light source of one wavelength of the plurality of light sources are distinguished from signals caused by light emitted by another light source of another wavelength of the plurality of light sources, by the frequency analyzer. 4. The system of claim 3, wherein the dichroic fold mirror folds light emitted by each light source of the plurality of light sources into one output of light directed to a target. 5. The system of claim 1, wherein the array of light detectors comprises an array of concentric annular detectors. 6. The system of claim 1, wherein the target is a core stream of a flow stream channel of a cytometer. 7. The system of claim 6, wherein the array of light detectors comprises a FALS detector. 8. The system of claim 7, wherein the array of light detectors comprises a SALS detector. 9. The system of claim 8, wherein the array of light detectors comprises a counting detector. 10. The system of claim 9, wherein a portion of the one output of light is directed to another part of the flow stream channel. 11. The system of claim 10, wherein signals from the array of light detectors may have velocity information about the core stream. 12. A method for identifying components of a detected light beam having different wavelengths, comprising: modulating with a first frequency a first light having a first wavelength; modulating with another frequency at least another light having another wavelength; combining the light having the first wavelength with the at least another light with the another wavelength into a light beam; detecting the light beam with an array of light detectors that converts the detected light into an electrical signal representing light impinging the detector at respective angles and are separated from one another by an area that is not sensitive to light such that each detector subtends its own prescribed angle; and analyzing the electrical signal into signals representing light of the first wavelength and signals representing the at least another light having another wavelength. 13. The method of claim 12, further comprising directing the light beam at a target. 14. The method of claim 13, wherein the target is a core stream of a cytometer flow stream channel. 15. The method of claim 13, wherein the array of detectors detects light scattered by the target. 16. The method of claim 15, wherein the array of detectors are annular detectors. 17. The system of claim 16, wherein the array of detectors has an array of concentric annular detectors. 18. The method of claim 15, wherein the array of detectors comprises an array of individual detectors for determining amounts of light at different angular intervals of direction of the light.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Frequency-multiplexed detection of multiple wavelength light for flow cytometry 원문보기

초록

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Frequency-multiplexed detection of multiple wavelength light for flow cytometry 원문보기

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