A method and apparatus for direct two-dimensional transillumination imaging of a sample immersed in or including a scattering medium at infrared to near-infrared wavelengths. Frequency conversion and time-gating techniques in the infrared and near-infrared range are used to enhance two-dimensional image...http://www.google.es/patents/US5451785?utm_source=gb-gplus-sharePatente US5451785 - Upconverting and time-gated two-dimensional infrared transillumination imaging
Upconverting and time-gated two-dimensional infrared transillumination imaging
