TY - JOUR
T1 - Theory of equidistant three–dimensional radiance measurements with optical microprobes
AU - Fukshansky-Kazarinova, N.
AU - Fukshansky, L.
AU - Kühl, M.
AU - Jørgensen, B. B.
PY - 1996/1/1
Y1 - 1996/1/1
N2 - Fiber-optic radiance microprobes, increasingly applied for measurements of internal light fields in living tissues, provide three-dimensional radiance distribution solids and radiant energy fluence rates at different depths of turbid samples. These data are, however, distorted because of an inherent feature of optical fibers: nonuniform angular sensitivity. Because of this property a radiance microprobe during a single measurement partly underestimates light from the envisaged direction and partly senses light from other directions. A theory of three-dimensional equidistant radiance measurements has been developed that provides correction for this instrumental error using the independently obtained function of the angular sensitivity of the microprobe. For the first time, as far as we know, the measurements performed with different radiance microprobes are comparable. An example of application is presented. The limitations of this theory and the prospects for this approach are discussed.
AB - Fiber-optic radiance microprobes, increasingly applied for measurements of internal light fields in living tissues, provide three-dimensional radiance distribution solids and radiant energy fluence rates at different depths of turbid samples. These data are, however, distorted because of an inherent feature of optical fibers: nonuniform angular sensitivity. Because of this property a radiance microprobe during a single measurement partly underestimates light from the envisaged direction and partly senses light from other directions. A theory of three-dimensional equidistant radiance measurements has been developed that provides correction for this instrumental error using the independently obtained function of the angular sensitivity of the microprobe. For the first time, as far as we know, the measurements performed with different radiance microprobes are comparable. An example of application is presented. The limitations of this theory and the prospects for this approach are discussed.
KW - Fiber-optic microprobe
KW - Optics of living tissue
KW - Radiance measurements
KW - Threedimensional picture of light field in turbid media
UR - http://www.scopus.com/inward/record.url?scp=0012919990&partnerID=8YFLogxK
U2 - 10.1364/AO.35.000065
DO - 10.1364/AO.35.000065
M3 - Journal article
AN - SCOPUS:0012919990
SN - 1559-128X
VL - 35
SP - 65
EP - 73
JO - Applied Optics
JF - Applied Optics
IS - 1
ER -