Efficient modulated imaging
First Claim
1. An apparatus for the measurement of a turbid sample comprisingan illumination apparatus having a plurality of light sources configured to illuminate a target area of a turbid sample with planar light at a plurality of wavelengths,a projection system configured to illuminate said target area of turbid sample with structured light at a plurality of wavelengths, wherein the illumination apparatus and the projection system have different optical projection paths,a sensor configured to collect a plurality of wavelengths of planar light and a plurality of wavelengths of structured light remitted from the target area of the turbid sample, anda processor configured to analyze data of the remitted planar and structured light collected by the sensor to determine the scattering and absorption coefficients of the turbid sample, wherein the plurality of wavelengths of the remitted planar light differ from the plurality of wavelengths of the remitted structured light.
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Accused Products
Abstract
An apparatus for turbid sample measurement comprising a plurality of light sources for illuminating a turbid sample target area with non-spatial structured light, a projection system for illuminating the turbid sample target area with spatial structured light, a sensor for collecting light from the turbid sample target area, and a processor to analyze the data captured by the sensor to yield scattering and absorption coefficients of the turbid sample. A method comprises illuminating the sample with spatial structured light, collecting light reflected from the sample at a number of wavelengths, illuminating the sample with non-spatial structured light, collecting light reflected from the sample at a number of wavelengths, and combining the measurements of the collected light to obtain the optical properties of the sample and/or the concentration of absorbing or fluorescent molecules. The wavelengths of the spatial and non-spatial light sources are preferably different.
145 Citations
20 Claims
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1. An apparatus for the measurement of a turbid sample comprising
an illumination apparatus having a plurality of light sources configured to illuminate a target area of a turbid sample with planar light at a plurality of wavelengths, a projection system configured to illuminate said target area of turbid sample with structured light at a plurality of wavelengths, wherein the illumination apparatus and the projection system have different optical projection paths, a sensor configured to collect a plurality of wavelengths of planar light and a plurality of wavelengths of structured light remitted from the target area of the turbid sample, and a processor configured to analyze data of the remitted planar and structured light collected by the sensor to determine the scattering and absorption coefficients of the turbid sample, wherein the plurality of wavelengths of the remitted planar light differ from the plurality of wavelengths of the remitted structured light.
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13. A method for the measurement of a turbid sample comprising the steps of
illuminating a turbid sample with structured light, collecting light reflected from the turbid sample to obtain remitted structured light of the turbid sample at a plurality of wavelengths, λ -
j,
illuminating the turbid sample with planar light, collecting light reflected from the turbid sample to obtain remitted planar light of the sample at a plurality of wavelengths, λ
k, wherein the plurality of wavelengths λ
k of the remitted planar light differ from the plurality of wavelengths λ
j of the remitted structured light,and combining measurements of the remitted structured light and the remitted planar lighted collected from the turbid sample and determining the scattering and absorption coefficients of the turbid sample. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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j,
Specification