Forensic Light Source Applications Wavelengths And Uses

An even more detailed use of infrared technology in forensics is infrared spectroscopy.

Forensic light source applications wavelengths and uses.

Horiba manufactures forensic instrumentation to collect and analyze evidence during the course of an investigation. In simple terms infrared spectroscopy is the use of infrared light to analyze the chemical bonds within molecules. Forensic light source applications. Each chemical bond within a molecule vibrates at a frequency that is unique to that bond much like a fingerprint.

The use of fluorescent enhancement processes that compliment a light source greatly increases the types of surfaces from which a latent fingerprint can be detected. To eliminate the fluorescence of the cleansers or detergents use a forensic light source tuned above 440nm. Many body fluids organic materials and fibers will fluoresce under the forensic light source and other materials such as blood gunshot residue and some inks will absorb blue light to appear dark under the light source. Wavelengths and uses the who what where and when of wavelengths 2 a forensic light source is made up of a powerful lamp containing the ultra violet visible and infrared components of light.

The primary application of a forensic light source is for enhancing the detection of latent fingerprints. Instruments such as forensic light sources reflective uv and fingerprint imaging systems are designed to be used at the crime scene to collect and in the laboratory to analyze evidence. Usually in forensic sciences ultraviolet uv light is used to induce fluorescence on many samples to identify and evaluate proofs ex. Uv blue lights locate bodily fluids trace evidence.

These substances are often not observable to the naked eye and especially if the surface was wiped down or cleaned. Foxfury portable forensic light sources and lasers help visualize evidence and can be used in the field or in the lab. The proper colored goggle will block the specific wavelength of light emitted by the forensic or alternate light source allowing only the longer wavelength fluorescence to pass. Fibers gunshot residue biologic fluids pigments inks and fingerprints and different wavelength are used to better enhance the material characteristics.

In addition to handheld crime lites foster freeman manufactures two models multi wavelength laboratory light source. Applications detection of body fluids with an alternate light source. Cyan green light help with fingerprints. Forensic laboratory light sources.