Patent ID: 8692998

Claim:
An apparatus for imaging in depth in a turbid sample comprising: a source of an excitation beam; excitation optics optically coupled to the excitation beam for optically processing the excitation beam; a microscope optically coupled with the processed excitation beam; an objective coupled to the microscope disposed on a first side of the turbid sample for directing the coupled excitation beam onto the first side of the turbid sample; and a detector assembly disposed on a second side of the turbid sample, wherein the detector includes detection optics, wherein the detector assembly further comprises: a mirror coated cylinder including a first end and a second end; a photomultiplier tube optically coupled with the first end of the mirror coated cylinder; and a shutter optically coupled with the second end of the cylinder, wherein the shutter further includes a plurality of filters and a selectively movable plate for opening and closing the shutter.