400nm VIOLET LED - Alternate Light Source

3W VIOLET 400nm Alternate Light Source

Highest beam uniformity and optics quality.

Projects a precise & tight focused beam profile.  

Add additional wavelengths or choose one of our prebuilt ALS kits.

Portable Forensic Light Kits (ALS)

Portable forensic light kits are used by law enforcement and military units to detect and analyze evidence found during crime scene & battlefield investigations.   An ALS (alternate light source) can emit multiple visible, and/or infrared (IR) light that is filtered to individual color bands (wavelengths). The wavelengths enhance the visualization of evidence, which may glow (fluoresce) or darken when illuminated using the ALS and viewed using the corresponding barrier filter.  Different wavelengths enhance the appearance of different types of evidence; therefore, multiple wavelengths may be required to complete a thorough investigation of a crime scene. Some kits provide a different ALS for each wavelength. The ALS's in this type of kit typically resemble flashlights—each have their own light and power source. When the operator wants to change wavelengths, they select another ALS from the kit.