LSV2 Alternate Light Source Imaging Tool

Description

The LSV2, manufactured by Leeds Forensic Systems, is an alternate light source (ALS) and imaging system for forensic examination and documentation. It utilizes a multispectral array of energy-efficient, remotely controlled LEDs to emit specific wavelengths of light, which can induce fluorescence or absorption in various materials. The available wavelengths include ultraviolet (365 nm peak), violet (405 nm), blue (455 nm), green (528 nm), amber (589 nm), and near-infrared (860 nm), plus a broad-spectrum white LED (400-700 nm, 5700°K). This range of illumination allows examiners to screen large areas of evidence and optimize imaging conditions for detecting a wide array of substances. Typical applications include the visualization and recording of bodily fluids (semen, saliva), trace evidence, latent fingerprints, gunshot residue, vaporous lead deposits, blood spatter patterns, bruising, bite marks, and subcutaneous features like veins and tattoos. The integrated imaging capability facilitates direct capture and documentation of findings under controlled spectral lighting.