CN110186878A - A kind of criminal material evidence apparatus for obtaining evidence based on laser coaxial imaging - Google Patents
A kind of criminal material evidence apparatus for obtaining evidence based on laser coaxial imaging Download PDFInfo
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- CN110186878A CN110186878A CN201910479059.6A CN201910479059A CN110186878A CN 110186878 A CN110186878 A CN 110186878A CN 201910479059 A CN201910479059 A CN 201910479059A CN 110186878 A CN110186878 A CN 110186878A
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- 239000000463 material Substances 0.000 title claims abstract description 51
- 238000003384 imaging method Methods 0.000 title claims abstract description 38
- 239000013307 optical fiber Substances 0.000 claims abstract description 43
- 238000011840 criminal investigation Methods 0.000 claims abstract description 25
- 239000007787 solid Substances 0.000 claims abstract description 25
- 230000003287 optical effect Effects 0.000 claims abstract description 17
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims 1
- 238000012216 screening Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000931526 Acer campestre Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000891 luminescent agent Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/117—Identification of persons
- A61B5/1171—Identification of persons based on the shapes or appearances of their bodies or parts thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
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- Animal Behavior & Ethology (AREA)
- Biophysics (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Physics & Mathematics (AREA)
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- Studio Devices (AREA)
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Abstract
It is disclosed by the invention to belong to optics, technique of criminal investigation field, specially a kind of criminal material evidence apparatus for obtaining evidence based on laser coaxial imaging, it include: shading cover main body, optical fiber light guide device, optical filter and all-solid state laser criminal investigation instrument interface is imaged, optical fiber light guide device is fixedly mounted on the left of the inner wall of the shading cover main body, the imaging optical filter is fixedly mounted in the left side wall of the optical fiber light guide device, the left side wall of the imaging optical filter is fixedly installed with link slot, the left side wall of the link slot is connected with adapter ring, the all-solid state laser criminal investigation instrument interface is fixedly mounted in the bottom of the optical fiber light guide device, the coupling lens group is fixedly mounted in the inner wall of the all-solid state laser criminal investigation instrument interface, the invention can be realized one and operate, still evidence obtaining work can be carried out to material evidence with good in the case where environmental disturbances light intensity , and the uniform resultant effect of material evidence brightness of image.
Description
Technical field
The present invention relates to optics, technique of criminal investigation field, specially a kind of criminal material evidence evidence obtaining based on laser coaxial imaging
Device.
Background technique
All-solid state laser criminal investigation instrument, which is searched warrant, is easy evidence obtaining hardly possible, is mainly reflected in one worker of needs and operates all-solid state laser
The work of criminal investigation instrument, in addition a worker holds camera and filtering apparatus and carries out evidence obtaining work to material evidence, this evidence obtaining refers mainly to punishment
Latent fingerprint, palmmprint etc. on things card are difficult to the trace material evidence collected evidence.Two people work cause evidence obtaining person and material evidence respectively
Between imaging have certain angle, and material evidence is made to generate deformation, while evidence obtaining person can closely block laser apart from material evidence to material evidence excessively
Irradiation excitation, and evidence obtaining person caused farther out apart from material evidence material evidence imaging size it is smaller, resolution ratio reduction the defects of, to the later period
Material evidence comparison impact.
It is difficult to accomplish accurate vertical irradiation when current all-solid state laser criminal investigation instrument evidence obtaining, and angled irradiation will lead to
The problem of irradiated region light energy distribution unevenness, and material evidence is made to show that two sides are bright --- the image of dark gradual change, the defect equally exist
Difficulty is caused in later period material evidence comparison process.
Criminal material evidence, especially fingerprint class material evidence, belong to trace material evidence, low (the light quilt that material evidence issues of its own brightness
Referred to as " signal "), it is easy to be interfered by environment, such as light, sunlight environment light can all interfere material evidence light, it is this dry
Referred to as " noise " is disturbed, when working as noise signal, that is, luminous intensity being interfered to be more than material evidence itself light, material evidence, that is, invisible.If mentioning
The signal-to-noise ratio of high material evidence light, or improve laser output power or reduce the intensity of environmental disturbances light, simple improving laser power
It is a kind of infeasible method, because improving laser output power not only results in the increase of equipment volume weight, reduces Portability；
Energy consumption is improved, the increase of energy consumption also needs more batteries to provide energy, can further decrease Portability again in this way, thus
Become difficult criminal scene evidence obtaining heavy；And the raising of laser power can become strong to irradiation area heating efficiency, so as to cause
The rotten of DN500 is difficult to carry out depth evidence obtaining in material evidence, therefore needs to research and develop a kind of criminal object having based on laser coaxial imaging
Demonstrate,prove apparatus for obtaining evidence.
Summary of the invention
The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferable realities
Apply mode.It may do a little simplified or be omitted to avoid making in this section and the description of the application and the title of the invention
The purpose of this part, abstract of description and denomination of invention is fuzzy, and this simplification or omission cannot be used for limiting model of the invention
It encloses.
It the problem of in view of the above-mentioned and/or existing criminal material evidence apparatus for obtaining evidence XX based on laser coaxial imaging, mentions
The present invention is gone out.
Therefore, the purpose of the present invention is to provide the criminal material evidence apparatus for obtaining evidence being imaged based on laser coaxial, can be realized list
People operates, and still can carry out evidence obtaining work to material evidence with good in the case where environmental disturbances light intensity, and material evidence is imaged
Brightness uniformity.
In order to solve the above technical problems, according to an aspect of the present invention, the present invention provides the following technical scheme that
A kind of criminal material evidence apparatus for obtaining evidence based on laser coaxial imaging comprising: shading cover main body, optical fiber light-guiding dress
It sets, optical filter and all-solid state laser criminal investigation instrument interface is imaged, optical fiber is fixedly mounted on the left of the inner wall of the shading cover main body and leads
The imaging optical filter, a left side for the imaging optical filter is fixedly mounted in electro-optical device, the left side wall of the optical fiber light guide device
Side wall is fixedly installed with link slot, and the left side wall of the link slot is connected with adapter ring, and the bottom of the optical fiber light guide device is solid
Dingan County fills the all-solid state laser criminal investigation instrument interface, and the coupling is fixedly mounted in the inner wall of the all-solid state laser criminal investigation instrument interface
Lens group.
As it is of the present invention based on laser coaxial imaging criminal material evidence apparatus for obtaining evidence a kind of preferred embodiment,
In: thread groove is offered on the left of the inner wall of the adapter ring, the left side wall of the adapter ring is bolted with camera by thread groove
Camera lens.
As it is of the present invention based on laser coaxial imaging criminal material evidence apparatus for obtaining evidence a kind of preferred embodiment,
In: the right side wall of the optical fiber light guide device is fixedly installed with optical fiber disc face.
As it is of the present invention based on laser coaxial imaging criminal material evidence apparatus for obtaining evidence a kind of preferred embodiment,
In: the area of the optical fiber disc face is 10-100 square millimeters.
As it is of the present invention based on laser coaxial imaging criminal material evidence apparatus for obtaining evidence a kind of preferred embodiment,
In: the inner wall right side opening of the shading cover main body is equipped with opening groove, and the right side wall of shading cover main body is fixedly installed with preventing rubber
Circle.
Compared with prior art: all-solid state laser criminal investigation instrument, evidence obtaining camera are constituted into a set of material evidence acquisition system, it can be single
People's operation, by one artificial dark field of the device manufacturing, greatly improved the contrast and clarity of material evidence, makes to be difficult to carry out
The interior and evidence obtaining work on field daytime for being protected from light work are achieved, and are shortened the evidence obtaining time, are improved the detection efficiency of case,
By same imaging shaft, the light intensity unevenness problem of imaging illumination is eliminated, has unified the brightness and contrast of image, has substantially alleviated
Image processing work before later period comparison.
Detailed description of the invention
It, below will be in conjunction with attached drawing and detailed embodiment party in order to illustrate more clearly of the technical solution of embodiment of the present invention
The present invention is described in detail for formula, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.Wherein:
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the left view of structure of the invention.
In figure: 100 shading cover main bodies, 110 opening grooves, 200 optical fiber light guide devices, 210 optical fiber disc faces, 300 imagings
Filter, 310 link slots, 320 adapter rings, 400 all-solid state laser criminal investigation instrument interfaces, 410 coupling lens groups, 500 optical fiber luminescents
Ring, 600 return projectors.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with
Implemented using other than the one described here other way, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by following public specific embodiment.
Secondly, combination schematic diagram of the present invention is described in detail, when embodiment of the present invention is described in detail, for purposes of illustration only,
Indicate that the sectional view of device architecture can disobey general proportion and make partial enlargement, and the schematic diagram is example, herein not
The scope of protection of the invention should be limited.In addition, the three-dimensional space of length, width and depth should be included in actual fabrication.
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to implementation of the invention
Mode is described in further detail.
The present invention provides a kind of criminal material evidence apparatus for obtaining evidence based on laser coaxial imaging, grasps for realizing one
Make, still evidence obtaining work can be carried out to material evidence with good in the case where environmental disturbances light intensity, and material evidence brightness of image is uniform,
Referring to Fig. 1, shading cover main body 100, optical fiber light guide device 200, imaging optical filter 300 and all-solid state laser criminal investigation instrument interface
400；
Fig. 1 and Fig. 2 are please referred to, shading cover main body 100 has opening groove 110, specifically, the inner wall of shading cover main body 100
Right side opening is equipped with opening groove 110, and the right side wall of shading cover main body 100 is connected with preventing rubber circle, and shading cover main body 100 is for solid
Dingan County fills optical fiber light guide device 200, and shading cover main body 100 is made of stainless steel；
Fig. 1 and Fig. 2 are please referred to, optical fiber light guide device 200 has optical fiber disc face 210, and optical fiber light guide device 200 is mounted on
The left side wall of shading cover main body 100, specifically, the right side wall of optical fiber light guide device 200 is integrally formed with optical fiber disc face 210,
The area of optical fiber disc face 210 is 10-100 square millimeters, and be spirally connected optical fiber light guide device on the left of the inner wall of shading cover main body 100
200, optical fiber light guide device 200 is for being fixedly mounted imaging optical filter 300；
Fig. 1 and Fig. 2 are please referred to, imaging optical filter 300 has link slot 310 and adapter ring 320, optical filter is imaged
300 are mounted on the left side wall of optical fiber light guide device 200, specifically, the left side wall of imaging optical filter 300 offers link slot
310, the left side wall of link slot 310 is connected with adapter ring 320, and the left side wall fixing card of optical fiber light guide device 200 connects imaging filter
The inner wall left side of wave device 300, adapter ring 320 offers thread groove, and the left side wall of adapter ring 320 is bolted with photograph by thread groove
Machine camera lens, imaging optical filter 300 are made of stainless steel；
Fig. 1 and Fig. 2 are please referred to, all-solid state laser criminal investigation instrument interface 400 has coupling lens group 410, all-solid state laser punishment
Detect the bottom that instrument interface 400 is mounted on optical fiber light guide device 200, specifically, the bottom of optical fiber light guide device 200 integrally formed with
All-solid state laser criminal investigation instrument interface 400, the fixed clamping coupling mirror head group 410 of the inner wall of all-solid state laser criminal investigation instrument interface 400, entirely
Solid-state laser criminal investigation instrument interface 400 is made of stainless steel；
In the specific use process, when the needs present invention during use first connects all-solid state laser criminal investigation instrument
The bottom of mouth 400 connects upper all-solid state laser criminal investigation instrument, is buckled in material evidence using the opening groove 110 in shading cover main body 100 and acquires
Area forms artificial dark field, and environmental disturbances light and imaging region are completely cut off, and the laser that all-solid state laser criminal investigation instrument issues passes through inside
Optical fiber lead in the optical fiber disc face 210 positioned at 200 bottom surface of optical fiber light guide device, structure is the wherein side of several optical fiber
End face forms an optical fiber luminescent ring 500, another end of these optical fiber in the bottom surface of optical fiber light guide device 200 with annular distribution
Face, which is concentrated, is fixed on one fiber optic bundle of formation in an optical fiber disc face 210, and the laser that all-solid state laser criminal investigation instrument issues passes through
It couples in the conduction to optical fiber disc face 210 of lens group 410, laser is issued by optical fiber luminescent ring 500, and is radiated at material evidence acquisition
Area forms a uniform illumination field, and the material evidence in illumination field generates the material evidence for being different from optical maser wavelength after being irradiated with a laser
Information light is simultaneously returned along return projector 600, forms coaxial-illuminating imaging arrangement, this part light contains the laser being reflected back
And material evidence information light, return projector 600 by imaging optical filter 300 after, laser is filtered, leave behind material evidence information light into
Enter camera.
Although hereinbefore invention has been described by reference to embodiment, model of the invention is not being departed from
In the case where enclosing, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as not depositing
Various features in structural conflict, presently disclosed embodiment can be combined with each other by any way and be made
With not carrying out the description of exhaustive to the case where these combinations in the present specification and length and economize on resources merely for the sake of omitting
The considerations of.Therefore, the invention is not limited to particular implementations disclosed herein, but including falling into the scope of the claims
Interior all technical solutions.
Claims (5)
1. a kind of criminal material evidence apparatus for obtaining evidence based on laser coaxial imaging characterized by comprising shading cover main body (100),
Optical fiber light guide device (200), imaging optical filter (300) and all-solid state laser criminal investigation instrument interface (400), the shading cover main body
(100) optical fiber light guide device (200) are fixedly mounted on the left of inner wall, the fixed peace of the left side wall of the optical fiber light guide device (200)
The imaging optical filter (300) is filled, the left side wall of imaging optical filter (300) is fixedly installed with link slot (310), institute
The left side wall for stating link slot (310) is connected with adapter ring (320), and institute is fixedly mounted in the bottom of the optical fiber light guide device (200)
All-solid state laser criminal investigation instrument interface (400) is stated, the coupling is fixedly mounted in the inner wall of the all-solid state laser criminal investigation instrument interface (400)
It closes lens group (410).
2. the criminal material evidence apparatus for obtaining evidence according to claim 1 based on laser coaxial imaging, which is characterized in that described turn
It connects and offers thread groove on the left of the inner wall of ring (320), the left side wall of the adapter ring (320) is bolted with camera by thread groove
Camera lens.
3. the criminal material evidence apparatus for obtaining evidence according to claim 1 based on laser coaxial imaging, which is characterized in that the light
The right side wall of fine guiding device (200) is fixedly installed with optical fiber disc face (210).
4. the criminal material evidence apparatus for obtaining evidence according to claim 3 based on laser coaxial imaging, which is characterized in that the light
The area of fine disc face (210) is 10-100 square millimeters.
5. the criminal material evidence apparatus for obtaining evidence according to claim 1 based on laser coaxial imaging, which is characterized in that the screening
The inner wall right side opening of light shield main body (100) is equipped with opening groove (110), and the right side wall of shading cover main body (100) is fixedly installed with rubber
Glue guard ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910479059.6A CN110186878A (en) | 2019-06-04 | 2019-06-04 | A kind of criminal material evidence apparatus for obtaining evidence based on laser coaxial imaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910479059.6A CN110186878A (en) | 2019-06-04 | 2019-06-04 | A kind of criminal material evidence apparatus for obtaining evidence based on laser coaxial imaging |
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| Publication Number | Publication Date |
|---|---|
| CN110186878A true CN110186878A (en) | 2019-08-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910479059.6A Pending CN110186878A (en) | 2019-06-04 | 2019-06-04 | A kind of criminal material evidence apparatus for obtaining evidence based on laser coaxial imaging |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6398505U (en) * | 1986-12-15 | 1988-06-25 | ||
| CN2532485Y (en) * | 2002-01-31 | 2003-01-22 | 王建钢 | Multi-fuction mark watching and analyzing instrument |
| US20030187344A1 (en) * | 2002-02-22 | 2003-10-02 | Xenogen Corporation | Bottom fluorescence illumination assembly for an imaging apparatus |
| CN2662267Y (en) * | 2003-08-28 | 2004-12-08 | 南京春辉科技实业有限公司 | Multi-ring shaped optical fibre illuminator |
| CN202939129U (en) * | 2012-11-21 | 2013-05-15 | 朱双全 | Laser evidence testing instrument |
| CN205485034U (en) * | 2016-03-14 | 2016-08-17 | 上海市刑事科学技术研究院 | Coaxial camera of laser |
| CN108333851A (en) * | 2018-03-15 | 2018-07-27 | 上海市刑事科学技术研究院 | The portable potential material evidence light distribution evidence obtaining light supply apparatus of one kind and its evidence collecting method |
| CN210571954U (en) * | 2019-06-04 | 2020-05-19 | 长春光吉科技有限责任公司 | Criminal evidence obtaining device based on laser coaxial imaging |
-
2019
- 2019-06-04 CN CN201910479059.6A patent/CN110186878A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6398505U (en) * | 1986-12-15 | 1988-06-25 | ||
| CN2532485Y (en) * | 2002-01-31 | 2003-01-22 | 王建钢 | Multi-fuction mark watching and analyzing instrument |
| US20030187344A1 (en) * | 2002-02-22 | 2003-10-02 | Xenogen Corporation | Bottom fluorescence illumination assembly for an imaging apparatus |
| CN2662267Y (en) * | 2003-08-28 | 2004-12-08 | 南京春辉科技实业有限公司 | Multi-ring shaped optical fibre illuminator |
| CN202939129U (en) * | 2012-11-21 | 2013-05-15 | 朱双全 | Laser evidence testing instrument |
| CN205485034U (en) * | 2016-03-14 | 2016-08-17 | 上海市刑事科学技术研究院 | Coaxial camera of laser |
| CN108333851A (en) * | 2018-03-15 | 2018-07-27 | 上海市刑事科学技术研究院 | The portable potential material evidence light distribution evidence obtaining light supply apparatus of one kind and its evidence collecting method |
| CN210571954U (en) * | 2019-06-04 | 2020-05-19 | 长春光吉科技有限责任公司 | Criminal evidence obtaining device based on laser coaxial imaging |
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Application publication date: 20190830 |