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Six-wavelength on-site physical evidence laser detector

A detector and wavelength technology, used in laser devices, semiconductor laser devices, and devices for controlling laser output parameters, etc., can solve the problems of unpractical application, complicated operation process, limited coverage, etc., achieve simple synchronous imaging, avoid Interfering, compact effect

Active Publication Date: 2015-11-25
SHANGHAI CRIMINAL SCI TECH RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. There are only four bands, covering a limited area;
[0006] 2. Each band can only be output from its own output channel, and cannot be output in the same output channel
Therefore, the operation process is complicated and cannot be practically applied in the field inspection

Method used

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  • Six-wavelength on-site physical evidence laser detector
  • Six-wavelength on-site physical evidence laser detector
  • Six-wavelength on-site physical evidence laser detector

Examples

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Embodiment Construction

[0065] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0066] see figure 1 , figure 1 It is a schematic diagram of the overall structure of the six-wavelength on-site physical evidence laser detector of the present invention. The six-wavelength on-site physical evidence laser detector of the present invention includes: two sets of laser generating systems A, B and a single laser output channel C. Among the two groups of laser generation systems, one group of laser generation systems A includes a first laser emission module 1, and a first wavelength generation optical path, a second wavelength generation optical path, and a third wavelength generation optical path arr...

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Abstract

The invention discloses a six-wavelength on-site physical evidence laser detector. The physical evidence laser detector is characterized in that the laser detector comprises two laser generation systems and a single laser output channel; in the two laser generation systems, one laser generation system comprises a first laser emission module, a first wavelength generation optical path, a second wavelength generation optical path and a third wavelength generation optical path, and the first wavelength generation optical path, the second wavelength generation optical path and the third wavelength generation optical path are arranged at the output side of the first laser emission module; the other laser generation system comprises a second laser emission module, a fourth wavelength generation optical path, a fifth wavelength generation optical path and a sixth wavelength generation optical path, and the fourth wavelength generation optical path, the fifth wavelength generation optical path and the sixth wavelength generation optical path are arranged at the output side of the second laser emission module. lasers outputted from the six wavelength generation optical paths are collected to a single laser output channel through a plurality of reflectors for output. Six-wavelength integration of main wave bands covering physical evidence detection is achieved, requirements of searchlighting with different traces and different wavelengths during the scene investigation process in the criminal science and technology are met furthest, and the provided laser detector has advantages of compact structure, stable performances, convenient operation, high conversion efficiency and the like.

Description

technical field [0001] The invention relates to a six-wavelength on-site evidence laser detector that covers the main laser bands required for on-site evidence detection and is applied to on-site evidence detection by using optical frequency doubling and sum frequency technology. Background technique [0002] In the process of effectively screening the personal biological sample information of criminal suspects, the public security department often regards the appearance and extraction of potential fingerprints as one of the most important links in finding evidence for litigation. At present, there are many ways to show traces, which are mainly divided into three categories: physical methods, chemical methods and optical methods. The physical methods include 502 glue fumigation, powder brushing, iodine fumigation, physical developer, small particle suspension, vacuum metal coating and dyeing. Chemical methods mainly include ninhydrin visualization, DFO visualization and sil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/40H01S5/06A61B5/117
Inventor 蔡能斌糜忠良邹芸徐宝桢黄晓春邓南温思博秦真科崔洋
Owner SHANGHAI CRIMINAL SCI TECH RES INST
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