Laser physical evidence exploration instrument

Abstract

The invention relates to a laser physical evidence exploration instrument comprising a laser generation unit and an laser output unit, wherein the laser generation unit comprises a plurality of lasers and a control system, wherein the plurality of lasers are selected from at least two of a blue laser, a green laser, an orange laser and a red laser and respectively connected with the control system; the lasers are independently started to work, and the lasers started to work are the lasers with same colors at a same time point, wherein the lasers with the same colors indicate lasers of the plurality of lasers, which generate lasers with same colors; the laser output unit comprises a clustering part which can collect the lasers; the laser output end of each laser is respectively connected with the inlet end of the clustering part through one optical fiber; and the lasers generated by a laser module can be clustered and collected after penetrating through the clustering part. The laser physical evidence exploration instrument outputs the multispectral lasers together through a single light path, has uniform outgoing light and is especially suitable for the field of criminal exploration.

Description

technical field [0001] The invention relates to a laser physical evidence survey instrument, which is mainly used in criminal investigation to survey trace evidence left at a crime scene, and can also be used in the fields of laser lighting, fluorescent photography, equipment manufacturing and the like. Background technique [0002] In the field of criminal investigation, a variety of band spectral light sources are currently used as criminal scene investigation light sources. [0003] This multi-band spectral light source uses a metal halide bulb as a light source, and through the screening function of multiple sets of color filters, the spectral output light of different bands is filtered out. Under these output lights, with the use of investigation filters, traces of fingerprints, blood stains, sweat stains and other physiological substances left at the criminal scene can be found. [0004] According to the principles of physics and actual exploration experience, in th...

AI Technical Summary

Problems solved by technology

[0005] Based on the structural limitations of the light source with multiple bands and spectra, its output light intensity and light color purity are low

Multiple band spectral light sources cannot provide higher light intensity and higher light color purity

The characteristics of multi-band spectrum light source equipment limit the further improvement of criminal scene investigation efficiency

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