Efficient modulated imaging
First Claim
1. An apparatus for the measurement of a turbid sample comprisinga planar light source,a spatially structured light source,a sensor configured to collect light from a target area of the turbid sample illuminated by the planar light source and the spatial structure light source, anda processor configured to analyze the data captured by the sensor to yield the scattering and absorption coefficients of the turbid sample,wherein wavelengths of the light emitted from the planar light source are different from wavelengths of the light emitted from the spatially structured light source.
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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.
121 Citations
18 Claims
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1. An apparatus for the measurement of a turbid sample comprising
a planar light source, a spatially structured light source, a sensor configured to collect light from a target area of the turbid sample illuminated by the planar light source and the spatial structure light source, and a processor configured to analyze the data captured by the sensor to yield the scattering and absorption coefficients of the turbid sample, wherein wavelengths of the light emitted from the planar light source are different from wavelengths of the light emitted from the spatially structured light source.
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13. A method for the measurement of a turbid sample comprising the steps of
illuminating a target area of a turbid sample with spatially structured light, collecting light reflected from the turbid sample to obtain the remitted light of the sample at a number of wavelengths, λ -
j,
illuminating the target area of the turbid sample with planar light, collecting light reflected from the sample to obtain the remitted light of the sample at a number of wavelengths, λ
k, andcombining the obtained measurements from light having spatial structure and planar light to obtain fit parameters, wherein the fit parameters include one or more of the optical properties of the turbid sample at a number of wavelengths, λ
, and the concentration of absorbing or fluorescent molecules,wherein wavelengths of the planar light, λ
k, are different from wavelengths of the light having spatial structure, λ
j. - View Dependent Claims (14, 15, 16, 17, 18)
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j,
Specification