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Composite fluorescence imaging system applied in forensic science evidence testing, and application method thereof

A composite fluorescence and imaging system technology, applied in the field of spectral detection of forensic science, can solve problems such as no application reports, achieve the effect of easy assembly, eliminate the influence of interfering light, and minimize background stray light interference

Inactive Publication Date: 2012-12-05
CHINESE PEOPLE'S PUBLIC SECURITY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The combination of multi-band spectrometer and digital camera to obtain the spectral data of the substance and the image of the appearance of the fingerprint and the appearance of the substance with fluorescence characteristics has not been reported in the field of forensic science.

Method used

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  • Composite fluorescence imaging system applied in forensic science evidence testing, and application method thereof
  • Composite fluorescence imaging system applied in forensic science evidence testing, and application method thereof
  • Composite fluorescence imaging system applied in forensic science evidence testing, and application method thereof

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Embodiment Construction

[0038] The design and invention will be further described below in conjunction with the examples, and these examples are only for illustration, and do not limit the practical application scope of the design and invention.

[0039] The present invention is applied to the embodiment of the composite fluorescent imaging system for forensic evidence detection, such as figure 1 As shown, it includes: portable computer 1, AvaSpec2048 spectrometer 2, USB cable 3, spectrum receiving probe 4, digital camera with macro lens (and filter) 5, PHCR-1A gear holder 6, bracket 7 , optical fiber 8, light source probe 9, stage 10, HWGY-II light portable multi-band light source generator 11, box 12 (the inside of the box is a dark room).

[0040] The connection relationship of each component is as follows: the portable computer 1 is connected to the AvaSpec2048 spectrometer 2 and the digital camera 5 with a macro lens for operation and control through a USB connection line 3 . The AvaSpec2048 sp...

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Abstract

The invention belongs to the technical field of forensic science spectral measurement, and relates to a composite fluorescence imaging system applied in forensic science evidence testing, and an application method thereof. The system comprises: a light source unit, a light filtering unit, and an image collection and processing unit of a composite fluorescence imaging system. The method comprises steps that: an intensity of a multichannel light is regulated to a minimal value; a focal length of a single-lens reflex camera is adjusted, such that a visual field of an instant image displayed on aportable computer is clear; fluorescence spectral measurement is carried out upon an object requiring testing; a determined optimal light filter is placed in front of the single-lens reflex camera, and the multichannel light is regulated to an optimal wavelength and an optimal intensity; a fluorescence image of the object requiring testing is collected by a spectrometer, and the fluorescence image of the object requiring testing is shot; the fluorescence image is collected by the single-lens reflex camera under the remote controlling of the portable computer. With the system and the method provided by the invention, rapid processing of the image can be realized; the optimal exited wavelength can be selected rapidly, such that an optimal fluorescence effect can be obtained rapidly; and theimage of an object with fluorescence characteristics can be collected.

Description

technical field [0001] The invention belongs to the technical field of spectrum detection of forensic science, and in particular relates to a composite fluorescence imaging system applied to the detection of fluorescent substances in the fields of forensic science fingerprint imaging and physical and chemical evidence, and the system for excitation imaging, image acquisition and image processing of substances with fluorescent characteristics Technical method. Background technique [0002] Optical detection technology has a wide range of applications in forensic science, and optical detection methods are preferred for the detection of many physical evidence. Through optical inspection, the objective situation can be recorded intuitively, and the non-destructive inspection of the object to be inspected can be realized. [0003] The electrons outside the nucleus usually always move in the lowest energy orbit. The state in the lowest energy orbit is called the ground state, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64G01N21/01G01J3/28
Inventor 杨瑞琴陈顺昌王彦吉
Owner CHINESE PEOPLE'S PUBLIC SECURITY UNIVERSITY
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