CN103389267B - A kind of laser physical evidence exploration instrument - Google Patents
A kind of laser physical evidence exploration instrument Download PDFInfo
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- CN103389267B CN103389267B CN201310312727.9A CN201310312727A CN103389267B CN 103389267 B CN103389267 B CN 103389267B CN 201310312727 A CN201310312727 A CN 201310312727A CN 103389267 B CN103389267 B CN 103389267B
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Abstract
The present invention relates to a kind of laser physical evidence exploration instrument, comprise housing, the laser formation component be arranged in housing, Laser output assembly, the laser generated by laser formation component exports through Laser output assembly, Laser output assembly comprises boundling parts, concavees lens, the first convex lens, concavees lens can disperse the laser exported by boundling parts, the laser disperseed by concavees lens is again by outside the first convex lens output housing, Laser output assembly also comprises transfer device, and then the laser light bundle exported by the first convex lens and gathering can export by transfer device.The laser that laser physical evidence exploration instrument of the present invention is produced by laser formation component exports through the first convex lens after concavees lens dispersion again, and the laser exported by the first convex lens reduces the injury to human body greatly, ensures the personal safety of operating personnel.
Description
Technical field
The present invention relates to a kind of laser physical evidence exploration instrument, be mainly used in criminal investigation, for reconnoitring all kinds of material evidence in scene of a crime.
Background technology
As far back as the seventies in last century, scientist just finds that laser is the best light source investigating micro-criminal material evidence on the spot.Facts have proved in a large number, laser can easily find various tracers of a crime, especially finds the various vestiges containing Human Physiology material.Laser, with pure spectral characteristic and absolute super brightness, can be easy to find various physiologically substance vestige, and as sweat vestige, fingerprint trace, urine vestige, blood vestige, seminal fluid vestige etc., under laser irradiates, various biological vestige is high-visible.Exactly because also laser is the illumination by superhigh intensity, observe the vestige that some are subtle, thus when intense laser is irradiated to human body, also can damage human body, particularly laser is to the injury of eyes.Too strong laser can be burnt biological tissue, especially to amphiblestroid burn the most common.The injury of laser to skin is mainly manifested in damage chromatophore, causes capillary embolism, even causes blood vessel to break stain and hemorrhage.So in criminal case crime scene investigation, require that laser physical evidence exploration instrument can reconnoitre criminal material evidence vestige, ensure the injury of operating personnel's not Stimulated Light simultaneously, just seem particularly important.
Summary of the invention
Technical matters to be solved by this invention overcomes the deficiencies in the prior art, provides a kind of while ensureing that criminal scene reconnoitres effect, reduces laser to human injury, the light laser physical evidence exploration instrument carrying, facilitate movement.
For solving above technical matters, the present invention takes following technical scheme:
A kind of laser physical evidence exploration instrument, comprise housing, be arranged on the laser formation component in described housing, Laser output assembly, the laser generated by described laser formation component exports through described Laser output assembly, described Laser output assembly comprises and to be arranged in described housing and can by the boundling parts of laser light bundle and gathering, described Laser output assembly also comprises setting on the housing and be positioned at the concavees lens in the light outlet front of described boundling parts, arrange on the housing and be positioned at first convex lens in described concavees lens front, the center of described concavees lens, the center of described first convex lens in the same horizontal line, the laser launched from the light outlet of described boundling parts is successively through described concavees lens, described first convex lens are formed and expand parallel laser, described Laser output assembly also comprises for expanding parallel laser boundling by described and assemble the transfer device then exported.
Preferably, the position of the corresponding described boundling parts light outlet of described housing is provided with interface, and described concavees lens, described first convex lens are all arranged in described interface, and described transfer device and described interface can grafting separately.
Particularly, the beam expanding lens that described transfer device comprises waveguide channels, is arranged on the second convex lens of described waveguide channels light entrance end, is arranged on described waveguide channels light outlet end, when described transfer device is plugged in described interface, described second convex lens will expand parallel laser boundling and gathering by described, then exported by described waveguide channels, the laser exported by described waveguide channels exports through described beam expanding lens again.
Further particularly, described transfer device also comprises shell, and described second convex lens, described waveguide channels, described beam expanding lens are all arranged in described shell.
Preferably, described waveguide channels is liquid crystal optic fiber, and its length is selected according to actual needs.
Preferably, the light outlet end of described laser formation component is connected by Transmission Fibers with the light entrance end of described boundling parts, the laser produced by described laser formation component after described boundling parts by boundling and gathering.
Particularly, described Transmission Fibers is silica fibre.
Due to the enforcement of technique scheme, the present invention compared with prior art tool has the following advantages:
The laser that laser physical evidence exploration instrument of the present invention is produced by laser formation component through concavees lens dispersion after again outside the first convex lens output housing, the laser exported by the first convex lens is the parallel laser expanded after shaping, its unit area luminous energy index has reduced to the level of not harmful to human biological tissue, thus ensures Laser Transmission approach full safety.Even if improper operation causes laser to be revealed, the danger of operating personnel's personal safety also can not be caused to occur.
Laser physical evidence exploration instrument of the present invention in use, plugged by transfer device and interface and transmit inner laser to external output port, can not mobile shell, only mobile transfer device is reconnoitred scene of a crime, facilitate operating personnel's operation, when not using, transfer device being pulled away housing, facilitating vanning to carry.
Laser physical evidence exploration instrument Laser Transmission approach of the present invention safety, lightly to carry, convenient mobile.
Accompanying drawing explanation
Fig. 1 is the structural representation of laser physical evidence exploration instrument of the present invention;
Fig. 2 is the enlarged drawing at A place in Fig. 1;
Wherein: 1, housing; 2, laser formation component; 3, boundling parts; 4, Transmission Fibers; 5, concavees lens; 6, the first convex lens; 7, interface; 8, waveguide channels; 9, the second convex lens; 10, beam expanding lens.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail:
As shown in accompanying drawing 1 ~ 2, a kind of laser physical evidence exploration instrument comprises housing 1, the laser formation component 2 be arranged in housing 1, Laser output assembly, and the laser generated by laser formation component 2 exports through Laser output assembly.
Laser output assembly comprises and to be arranged in housing 1 and can by the boundling parts 3 of laser light bundle and gathering, the laser output of laser formation component 2 is connected by Transmission Fibers 4 with the inlet end of boundling parts 3, the laser produced by laser formation component 2 after boundling parts 3 by boundling and gathering.In the present embodiment, Transmission Fibers 4 is silica fibre.
In the present embodiment, Laser output assembly also comprises and is arranged on housing 1 and is positioned at the concavees lens 5 in the light outlet front of boundling parts 3, to be arranged on housing 1 and to be positioned at first convex lens 6 in concavees lens 5 front, the center of concavees lens 5, the center of the first convex lens 6 in the same horizontal line, the laser launched from the light outlet of boundling parts 3 is successively through concavees lens 5, first convex lens 6 are formed and expand parallel laser, concavees lens 5 disperse the laser exported by boundling parts 3, the laser disperseed by concavees lens 5 is again by outside the first convex lens 6 output housing 1, the laser exported by the first convex lens 6 is for expanding parallel laser.As shown in accompanying drawing 1 ~ 2, the position of housing 1 corresponding boundling parts 3 light outlet is provided with interface 7, concavees lens 5, first convex lens 6 are all arranged in interface 7.
In the present embodiment, Laser output assembly also comprises the transfer device with the separable grafting of interface 7, transfer device is used for expanding parallel laser boundling and assembling then exporting, transfer device comprises transfer device and comprises waveguide channels 8, is arranged on the second convex lens 9 of waveguide channels 8 light entrance end, is arranged on the beam expanding lens 10 of waveguide channels 8 light outlet end, when transfer device is plugged in interface 7, second convex lens 9 will expand parallel laser boundling and gathering, then exported by waveguide channels 8, the laser exported by waveguide channels 8 exports through beam expanding lens 10 again.In the present embodiment, waveguide channels 8 is liquid crystal optic fiber, and its length is selected according to actual needs, and in the present embodiment, its length is roughly 2m, and therefore, the length of whole transfer device is also roughly 2m.
In the present embodiment, transfer device also comprises shell, and the second convex lens 9, waveguide channels 8, beam expanding lens 10 are all arranged in the enclosure, and the shell wrapping up the second convex lens 9 and beam expanding lens 10 is metal shell, and the shell of parcel waveguide channels 8 is plastic flexible pipe.
Above to invention has been detailed description; its object is to allow the personage being familiar with this art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; and the invention is not restricted to the embodiments described; the equivalence change that all Spirit Essences according to the present invention are done or modification, all should be encompassed within protection scope of the present invention.
Claims (7)
1. a laser physical evidence exploration instrument, comprise housing (1), be arranged on the laser formation component (2) in described housing (1), Laser output assembly, the laser generated by described laser formation component (2) exports through described Laser output assembly, described Laser output assembly comprises and to be arranged in described housing (1) and can by the boundling parts (3) of laser light bundle and gathering, it is characterized in that: described Laser output assembly also comprises that to be arranged on described housing (1) upper and be positioned at the concavees lens (5) in the light outlet front of described boundling parts (3), be arranged on described housing (1) to go up and the first convex lens (6) being positioned at described concavees lens (5) front, the center of described concavees lens (5), the center of described first convex lens (6) in the same horizontal line, the laser launched from the light outlet of described boundling parts (3) is successively through described concavees lens (5), described first convex lens (6) formed expands parallel laser, described Laser output assembly also comprises for expanding parallel laser boundling by described and assemble the transfer device then exported.
2. laser physical evidence exploration instrument according to claim 1, it is characterized in that: the position of corresponding described boundling parts (3) light outlet of described housing (1) is provided with interface (7), described concavees lens (5), described first convex lens (6) are all arranged in described interface (7), and described transfer device and described interface (7) can grafting separately.
3. laser physical evidence exploration instrument according to claim 2, it is characterized in that: described transfer device comprises waveguide channels (8), be arranged on second convex lens (9) of described waveguide channels (8) light entrance end, be arranged on the beam expanding lens (10) of described waveguide channels (8) light outlet end, when described transfer device is plugged in described interface (7), described second convex lens (9) will expand parallel laser boundling and gathering by described, then exported by described waveguide channels (8), the laser exported by described waveguide channels (8) exports through described beam expanding lens (10) again.
4. laser physical evidence exploration instrument according to claim 3, is characterized in that: described transfer device also comprises shell, and described second convex lens (9), described waveguide channels (8), described beam expanding lens (10) are all arranged in described shell.
5. the laser physical evidence exploration instrument according to claim 3 or 4, is characterized in that: described waveguide channels (8) is liquid crystal optic fiber, and its length is selected according to actual needs.
6. laser physical evidence exploration instrument according to claim 1, it is characterized in that: the light outlet end of described laser formation component (2) and the light entrance end of described boundling parts (3) are connected by Transmission Fibers (4), the laser produced by described laser formation component (2) after described boundling parts (3) by boundling and gathering.
7. laser physical evidence exploration instrument according to claim 6, is characterized in that: described Transmission Fibers (4) is silica fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310312727.9A CN103389267B (en) | 2013-07-24 | 2013-07-24 | A kind of laser physical evidence exploration instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310312727.9A CN103389267B (en) | 2013-07-24 | 2013-07-24 | A kind of laser physical evidence exploration instrument |
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| CN103389267A CN103389267A (en) | 2013-11-13 |
| CN103389267B true CN103389267B (en) | 2015-09-23 |
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| CN201310312727.9A Active CN103389267B (en) | 2013-07-24 | 2013-07-24 | A kind of laser physical evidence exploration instrument |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712917A (en) * | 2014-01-15 | 2014-04-09 | 宋志宏 | Laser physical evidence survey instrument |
| CN105823779B (en) * | 2016-05-17 | 2018-11-02 | 杭州衡利电子技术有限公司 | Laser emission device and laser material evidence investigation device |
| CN106646649B (en) * | 2016-09-28 | 2018-12-14 | 苏州晓松科技开发有限公司 | Laser material evidence investigation appearance |
| CN108012069B (en) * | 2018-01-31 | 2024-07-26 | 杭州衡利电子技术有限公司 | Physical evidence investigation photographing system |
| CN115283364A (en) * | 2022-05-12 | 2022-11-04 | 成都启高科技有限公司 | Laser cleaning equipment for chip packaging mold |
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| CN203405403U (en) * | 2013-07-24 | 2014-01-22 | 苏州晓松科技开发有限公司 | Laser material evidence investigation instrument |
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| US20040120146A1 (en) * | 2002-12-20 | 2004-06-24 | Cao Group, Inc | Forensic light kit using semiconductor light source |
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| CN2225223Y (en) * | 1994-12-31 | 1996-04-24 | 广东省公安厅刑事科学技术研究所 | Impression light source |
| CN101672801A (en) * | 2009-09-23 | 2010-03-17 | 中国科学院上海光学精密机械研究所 | Silicon Wafer Surface Defect Detector with Defect Classification Capability and Defect Classification Method |
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| CN102837128A (en) * | 2012-08-28 | 2012-12-26 | 中国科学院光电研究院 | Laser direct writing machining system by using liquid crystal light valve reshaping |
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