foster + freeman

Description

ffTA-1 is a powerfull and flexible multifunctional system that provides the crime laboratory with a range of analytical facilities on a single microscope and PC. Using an optical multiplexer the operator is able to switch  from one function to another to perform a range of forensic examinations on different evidence material. The various modules are optional and can be simply retrofitted to expand system capability when required.

GLASS RI MEASUREMENTS

This module installs the standard GRIM 3 system for determining the refractive index of glass using the oil immersion/temperature variation technique and comprises a monochrome CCD camera,  phase contrast optics, Mettler hotstage, and the full GRIM3 software package.

IMAGE PROCESSING AND COMPARISON

A software package processing images from a 5 megapixel CCD colour camera mounted on the ffTA-1 image multiplexer. Functions available include image enhancements, a range of image comparison methods, image grey level and colour manipulations, image anotations, measurements and filing.

MICRO-SPECTROMETRY

A fibre-optic coupled, high sensitivity, high dynamic range spectrometer operating from 400 to 1000nm with  sub-5nm resolution. With the appropriate light sources installed the spectrometer provides reflectance, transmission and fluorescence spectra from samples in the 1.5 to 12 micron size range. Applications include analysis of coloured trace evidence such as fibres and paints.

FLUORESCENCE IMAGING

Uses the  5 megapixel CCD colour camera with a high intensity incident light source and a range of imaging barrier filters. Applications include the detection of fluorescent dyes and brighteners for the comparison and identification of fibres, paints, and inks .

RAMAN SPECTROSCOPY

Additional modules for Fluorescence imaging and Raman Spectroscopy are currently under development