Optics: measuring and testing – For light transmission or absorption
Reexamination Certificate
2005-11-10
2008-11-04
Stafira, Michael P (Department: 2886)
Optics: measuring and testing
For light transmission or absorption
Reexamination Certificate
active
07446875
ABSTRACT:
An apparatus for acquiring time-resolved measurements from a sample from optical scanning comprises pulsed laser light directed to the sample; a first detector disposed to detect the light after exiting from the sample, the detected light being in the form of a first temporal point spread function (TPSF); a first amplifier to amplify the first TPSF; a first analog-to-digital converted (ADC) to directly digitize the first TPSF; a first buffer connected to the first ADC; a time-pickoff detector to initiate the first ADC to digitize the first TPSF; a clock burst generator initiated by the time-pickoff detector to provide conversion timing to the first ADC; and a computer programmed to fit the digitized first TPSF to a theoretical curve to extract its amplitude, and attenuation and scattering coefficients.A method for acquiring time-resolved measurements from a sample from optical scanning comprises directing a pulse of light onto a surface of the sample; detecting the light that exits from the sample in the form of a temporal point spread function (TPSF); directly digitizing the TPSF; and extracting a transport scattering coefficient and a absorption coefficient from the digitized TPSF.
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Ponder Steven L.
Wake Robert H.
Imaging Diagnostic Systems, Inc.
Shlesinger & Arkwright & Garvey LLP
Stafira Michael P
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