CN104068863A - Photographing device for forensic science rough surface fingerprint evidence and photographing method thereof - Google Patents
Photographing device for forensic science rough surface fingerprint evidence and photographing method thereof Download PDFInfo
- Publication number
- CN104068863A CN104068863A CN201310100860.8A CN201310100860A CN104068863A CN 104068863 A CN104068863 A CN 104068863A CN 201310100860 A CN201310100860 A CN 201310100860A CN 104068863 A CN104068863 A CN 104068863A
- Authority
- CN
- China
- Prior art keywords
- lamp body
- light source
- camera
- evidence
- material evidence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Accessories Of Cameras (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a photographing device for forensic science rough surface fingerprint evidence and a photographing method thereof, relates to evidence photographing devices and solves the problems that the existing device is uneven in light distribution and inconvenient to use. The photographing device comprises an evidence camera, an even light distribution irradiation device connected to the even light distribution irradiation device and a loading table. The loading table is used for loading materials to be detected, the light of the even light distribution irradiation device irradiates on the materials to be detected, and the loading table adopts a multidirectional controllable evidence photography loading platform locator. The even light distribution irradiation device structurally comprises a lamp with a hemispherical shell, the top of the lamp is connected with a leans connector in a screwed manner, the bottom is provided with an annular base plate, the lens connector is of a buckling structure, and the lamp is provided with a built-in power supply and an even lighting source composed of a plurality of stripe annular LED light sources, inside. The evidence camera and the even light distribution irradiation device are in a buckling connected structure, and the photographing device is convenient to use accordingly; the even light distribution irradiation device is even in light distribution, the direction of the loading table is adjustable, the imaging display definition of potential trace evidences on the rough object surface is improved, and the evidence quality can be improved.
Description
Technical field
The present invention relates to the material evidence camera technique of forensic science field evidence obtaining use, relate in particular to a kind of photographic means and photographic means thereof of forensic science rough surface finger mark evidence obtaining.
Background technology
Material evidence photographic means is vestige qualification is collected evidence further to carry out by public security organs, procuratorial organs and people's court, Si Deng department visual plant to material evidence.Such device can be collected evidence to the vestige such as fingerprint, impression, and foundation is provided for solving a case, deciding on a verdict, and therefore material evidence photographic means plays an important role to the trial work of the case such as criminal, civil.
Material evidence photographic means is to take the photograph into the visual photo of human eye for vestige available light potential on rough surface object, therefore, when vestige evidence obtaining as material evidence camera, must be equipped with uniform light distribution irradiator, on rough surface object, potential vestige forms the uniform desirable lighting environment of hemispherical illumination under the irradiation of this uniform light distribution irradiator, under hemispherical Uniform Illumination, can clearly observe the mark information under this position of object, make material evidence camera take out the visual photo of human eye, to this latent trace is identified.
The uniform light distribution mode of using in existing such material evidence photographic means is to adopt 45 degree light angles to realize by the automatic light source of rephotograph stand, this existing mode cannot make material evidence obtain lighting environment very uniformly, make the texture on rough object surface produce severe jamming to finger mark, cause finger mark to differentiate, even cause evidence to be loss, impact evidence obtaining quality.In addition, this existing mode, without internal battery, needs external power supply to work, and cannot adapt to on-the-spot complicated working environment, uses limitation large.
In addition, the article carrying platform using in existing such material evidence photographic means is all fixed mesa, in the process of evidence obtaining of taking a picture, cannot observe the brightness reaction of finger mark streakline under different angles light source irradiates, can not reach the object of accurate luminous intensity distribution, the definition that manifests that affects potential material evidence, has affected evidence obtaining quality.
Summary of the invention
The object of the invention is the problems referred to above that exist in order to overcome prior art, and a kind of photographic means and the photographic means thereof that can carry out the forensic science rough surface finger mark evidence obtaining of clear demonstration to vestige potential on rough surface object providing.
The object of the invention is to be achieved through the following technical solutions:
A photographic means for forensic science rough surface finger mark evidence obtaining, is characterized in, comprising:
Material evidence camera; Uniform light distribution irradiator, is connected with the camera lens of material evidence camera; Object stage, on its table top, put checking matter, the light source of described uniform light distribution irradiator irradiates on checking matter, and this object stage adopts multidirectional controlled material evidence photography article carrying platform position finder, and the table top of this platform position finder carries out the adjustment of all around, upper and lower, rotation and incline direction to material evidence;
Described uniform light distribution irradiator comprises:
Lamp body, is hemispherical shell, and its top is provided with the female circular hole of tool, opens the annular bottom plate of circular hole in the middle of bottom is provided with, and the inner surface of lamp body is equipped with diffuse-reflectance coating;
Camera lens connector, is tubular fitting, and it is made up of upper and lower two parts: top is lens interface, and lens interface outer surface of cupular part is provided with the external screw thread matching with the female thread of material evidence camera camera lens; Bottom is lamp body interface, and lamp body interface bottom is provided with the external screw thread matching with the female thread of lamp body circular hole, and is mutually threaded; The top of the bottom of lens interface and lamp body interface is provided with two pairs of buckles of button mutually, and two pairs of buckles are arranged on respectively the two ends of a diameter line of camera lens connector; Two pairs of buckles after detaining mutually link into an integrated entity the lens interface in camera lens connector and lamp body interface; Have at the middle part of described lamp body interface the slotted eye that two communicates, this slotted eye is built-in with a centre and opens round-meshed becket, becket aperture is at least identical with the optic diameter of described material evidence camera camera lens, and both centers of circle are consistent, on this becket, be provided with a drawing and pulling type wavelength graduated filter, the housing of filter lens is flat rectangular, is rectangle graduated filter sheet in frame, and the width of graduated filter sheet is suitable with the optic diameter of camera gun;
Built-in power, comprises: lithium battery is a kind of rechargeable lithium battary, and it is arranged in described lamp body and is positioned on the base plate of circular hole two side positions, and it has the load end of two supply power supplys; On and off switch, is arranged on the outer surface of lamp body, and is connected on by wire between a power end and a load end of lithium battery, and another load end directly connects another power end of lithium battery; Charger interface, is arranged on the outer surface of lamp body, and is connected with two power ends of described lithium battery by wire;
Light source, is a kind of Uniform Illumination light source, and the LED strip annular light source different by several wavelength forms, wherein at least to comprise three part light: 200-400nm ultraviolet, 400-700nm visible ray, and in visible ray, contain the green glow about 420-430nm, 700-1000nm infrared ray; Several annular light sources are arranged on the base plate in lamp body and are positioned at the inner side of lithium battery, to the inner surface uniformly light-emitting of lamp body, described several annular light source is connected in parallel in two power source loads ends of described lithium battery by wire, wherein one end of each annular light source is connected with a load end of power supply by light source switch separately.
A photographic means for forensic science rough surface finger mark evidence obtaining, it comprises following steps:
S1, is placed in checking matter on the table top of object stage, and this object stage adopts multidirectional controlled material evidence photography article carrying platform position finder, and the table top of this platform position finder carries out the adjustment of all around, upper and lower, rotation and incline direction to material evidence;
S2, connects a uniform light distribution irradiator by the camera lens of material evidence camera, and the light source of this uniform light distribution irradiator irradiates on checking matter;
The lamp body of described uniform light distribution irradiator is hemispherical shell, and its top and a camera lens connector are spirally connected, and opens the annular bottom plate of circular hole in the middle of bottom is provided with, and inner surface is equipped with diffuse-reflectance coating; Described camera lens connector is tubular fitting, and it is made up of upper and lower two parts: top is the lens interface of junctional complex license camera lens, and bottom is the lamp body interface that connects lamp body; The top of the bottom of lens interface and lamp body interface is provided with two pairs of buckles of button mutually, and two pairs of buckles are arranged on respectively the two ends of a diameter line of camera lens connector; Two pairs of buckles after detaining mutually link into an integrated entity the lens interface in camera lens connector and lamp body interface; Have at the middle part of described lamp body interface the slotted eye that two communicates, this slotted eye is built-in with a centre and opens round-meshed becket, becket aperture is at least identical with the optic diameter of described material evidence camera camera lens, and both centers of circle are consistent, on this becket, be provided with a drawing and pulling type wavelength graduated filter;
The built-in power that the power supply of described uniform light distribution irradiator is made up of lithium battery, lithium battery is arranged in described lamp body and is positioned on the base plate of circular hole two side positions;
The light source of described uniform light distribution irradiator is a kind of Uniform Illumination light source, the LED strip annular light source different by several wavelength forms, wherein at least comprise three part light: 200-400nm ultraviolet, 400-700nm visible ray, and in visible ray, contain the green glow of 420-430nm left and right, 700-1000nm infrared ray; Several annular light sources are arranged on the base plate in lamp body and are positioned at the inner side of lithium battery, to the inner surface uniformly light-emitting of lamp body, described several annular light source is connected in parallel in two power source loads ends of described lithium battery by wire, each annular light source is connected with power supply by light source switch separately;
S3, opens the power supply of described uniform light distribution irradiator;
S4, opens the white light LEDs power supply in described light source;
S5, opens material evidence camera power supply, opens camera finding screen, finds a view, focuses;
S6, adjust the direction of described object stage table top, material evidence is carried out to the trickle movement of all around, upper and lower, rotation and incline direction, the disturbed condition of the rough grain of observing material evidence surface by the screen of finding a view of material evidence camera to finger mark, finds finger mark and manifests light distribution angle the most clearly;
S7, opens the LED power supply of the variant wavelength in light source one by one, and the disturbed condition of the rough grain of observing material evidence surface by the screen of finding a view of material evidence camera to finger mark, finds finger mark and manifest the wavelength of LED light source the most clearly;
S8, slip drawing and pulling type graduated filter, constantly changes filter wavelength, observes the rough grain on the material evidence surface disturbed condition to finger mark by the screen of finding a view of material evidence camera, finds finger mark and manifests the wavelength of graduated filter the most clearly;
S9, repeats above-mentioned step S7 and S8, observes the rough grain on the material evidence surface disturbed condition to finger mark by the screen of finding a view of material evidence camera, finds finger mark and manifests the wavelength combinations of LED light source and graduated filter the most clearly; Material evidence camera exposure, carries out material evidence photograph.
Described light source is made up of 8 different LED strip annular light sources of wavelength, is respectively: 365nm ultraviolet, 420nm visible ray, 450nm visible ray, 520nm visible ray, 590nm visible ray, 620nm visible ray, 945nm infrared ray and white light.
Described graduated filter sheet adopts narrow wave band plated film filter lens, and its length direction wave-length coverage is from left to right filtered by 365nm to 1100nm gradual change.
Beneficial effect of the present invention:
In the photographic means of rough surface finger mark evidence obtaining of the present invention, the irradiator of photographic means adopts uniform light distribution irradiator, the buckle that can connect fast camera lens is arranged at this uniform light distribution irradiator top, when work, can be connected to fast camera lens leading portion, the operation that only needs operator just can complete illumination and collect evidence, easy to use; At the inner lithium battery that charging capable of circulation is installed of this irradiator, for this irradiator uses supply of electric power is provided under any environment; In this irradiator, light source is annular LED light source, on the base plate of domed bottom, upwards luminous, and the highlighted light source of 8 different wave lengths is provided; In the inner diffuse-reflectance coating of adding of this irradiator hemispherical spheroid, make the luminous reflection of irradiator more even, make photographic means imaging display resolution high.In addition, the table top of putting the article carrying platform of checking matter card in this device be one can all around, upper and lower, rotation and tilt adjustments, and the center of motion remains unchanged, in the process of evidence obtaining of taking a picture, can effectively observe the brightness reaction under different angles light source irradiates of finger mark streakline on tested material evidence, reach the object of accurate luminous intensity distribution, make up the defect of traditional light-configuration mode, improve the quality that manifests of potential material evidence, be conducive to improve evidence obtaining quality.
For further illustrating above-mentioned purpose of the present invention, construction features and effect, below with reference to accompanying drawing, the present invention is described in detail.
Brief description of the drawings
Fig. 1 is the photographic means structural representation of rough surface finger mark evidence obtaining of the present invention;
Fig. 2 is the electric power-feeding structure schematic diagram of built-in power in Fig. 1;
Fig. 3 is the structural representation of light source in Fig. 1;
Fig. 4 is the assembling schematic diagram of camera lens connector in Fig. 1;
Fig. 5 is the photographic means flow chart of rough surface finger mark evidence obtaining of the present invention.
Detailed description of the invention
Accompanying drawing below in conjunction with embodiment is elaborated to the specific embodiment of the present invention.
Referring to Fig. 1, the photographic means of forensic science rough surface finger mark evidence obtaining of the present invention comprises:
Material evidence camera 100, adopts all full-spectrum cameras of sensitivity of ultraviolet, visible ray and infrared ray;
Uniform light distribution irradiator 200, is connected with the camera lens of material evidence camera 100;
Object stage 300, puts checking matter (object of rough surface) 400 on its table top, the light source of described uniform light distribution irradiator 200 irradiates on checking matter (object of rough surface) 400.
Above-mentioned uniform light distribution irradiator 200 comprises:
Lamp body 2, is hemispherical shell, and its top is provided with the female circular hole 21 of tool, opens the annular bottom plate 8 of circular hole in the middle of bottom is provided with.The inner surface of lamp body 2 is equipped with diffuse-reflectance coating 3.
Camera lens connector 1, referring to Fig. 4, it is tubular fitting, and it is made up of upper and lower two parts: top is lens interface 12, and lens interface 12 outer surface of cupular part are provided with the external screw thread matching with the female thread of material evidence camera camera lens 100; Bottom is lamp body interface 13, and lamp body interface 13 bottoms are provided with the external screw thread matching with the female thread of the circular hole 21 of lamp body 2, and are mutually threaded; Two pairs of buckles 11, to adopt existing photographing unit buckle, buckled the mutual fastener forming by a card one, be arranged on respectively the two ends of a diameter line of camera lens connector 1, wherein the card in every pair of buckle 11 is not arranged on the bottom of lens interface 12 and the top of lamp body interface 13 with deduction of points, two pairs of buckles 11 after detaining mutually link into an integrated entity the lens interface in camera lens connector 1 12 and lamp body interface 13.In Fig. 4, dotted arrow is the assembly direction of parts in lens interface 12.Have the slotted eye 14 that two communicates at the middle part of lamp body interface 13, this slotted eye 14 is built-in with a centre and opens round-meshed becket 141, this circular hole aperture is at least identical with the optic diameter of material evidence camera 100 camera lenses, its center of circle is consistent with the eyeglass center of circle of material evidence camera 100 camera lenses, on becket 141, be provided with a drawing and pulling type wavelength graduated filter 15, the housing of this drawing and pulling type wavelength graduated filter 15 is flat rectangular, it in frame, is rectangle graduated filter sheet, graduated filter sheet adopts narrow wave band plated film filter glass, the length direction of graduated filter sheet is filtered by 365nm to 1100nm gradual change for wave-length coverage from left to right, quite (identical or be slightly less than optic diameter) of the optic diameter of the width of graduated filter sheet and camera gun 100.When use, as required, the direction of this drawing and pulling type wavelength graduated filter of pull 15(figure hollow core arrow is filter lens pull direction), the position that makes the graduated filter sheet align cameras camera lens 100 of this filter lens is just the wavelength location that needs optical filtering.
Built-in power, for this irradiator provides power supply, referring to Fig. 2, it comprises: lithium battery 6, it is a kind of lithium battery of charging capable of circulation, the lithium battery of the present embodiment is 12.6V, and it is arranged in lamp body 2 and is positioned on the base plate 8 of 21 liang of side positions of circular hole (ensureing that light source 7 cited below is unobstructedly for camera gun provides irradiate light), and it has load end A and the B of two supply power supplys; On and off switch 4, be arranged on the outer surface of lamp body 2, and be connected on by wire between a power end and a load end A of lithium battery 6, another load end B directly connects another power end of lithium battery 6, in addition, for the duty of instruction lithium battery 6 own, between a load end A of on and off switch 4 and lithium battery, be also connected a power supply indicator 9, it is arranged on the outer surface of lamp body 2; Charger interface 5, is arranged on the outer surface of lamp body 2, and is connected with two power ends of described lithium battery 6 by wire.
Light source 7, referring to Fig. 3, is a kind of Uniform Illumination light source, is made up of the strip annular light source of several LED, and its wavelength is different, at least will comprise three part light: 200-400nm ultraviolet; 400-700nm visible ray, and visible ray must contain the green glow of 420-430nm left and right; 700-1000nm infrared ray.The strip annular light source that has 8 LED in the present embodiment, its wavelength is different, is respectively: 365nm ultraviolet, 420nm visible ray, 450nm visible ray, 520nm visible ray, 590nm visible ray, 620nm visible ray, 945nm infrared ray and white light.The strip annular light source of 8 LED is arranged on the base plate 8 in lamp body 2 and is positioned at the inner side of lithium battery 6, to the inner surface uniformly light-emitting of lamp body 2.The strip annular light source of described 8 LED is connected in parallel in two power source loads end A and the B of described lithium battery 6 by wire, wherein one end of the strip annular light source of each LED is connected with a load end A of power supply by light source switch K1-K8 separately respectively.8 light source switch K1-K8 control by remote controller 71, described remote controller 71 adopts wireless transmission, the each button of remote controller 71 is corresponding with the each switch wireless transmission in described 8 light source switch K1-K8, operating frequency is 433MHz, can need to open several arbitrarily in 8 light source switch K1-K8 according to different, to obtain the irradiation of needed wavelength light source.For example: when finger mark is retained on the figured plate glass of surface irregularity, the ultraviolet lighting of available 365nm, coordinates and adopt the method for uv photography to take pictures, extract finger mark; And for example: when the finger mark of leaving over is red blood finger mark, the illuminated with green of available 420nm, coordinates and adopt the method for colour photography to take pictures, extract finger mark.
Above-mentioned object stage 300 adopts multidirectional controlled material evidence photography article carrying platform position finder (referring to Chinese patent 201020146927.3, position indicator of material evidence examination platform), the table top that this platform position finder is put checking matter 400 can carry out front and back, left and right, up and down, multidirectional adjustment such as rotation and inclination, not only can one-way movement but also can multidirectional motion simultaneously, and the center of motion remains unchanged, in photograph process, the brightness reaction of the finger mark streakline that can effectively observe checking matter under different angles light source irradiates, and can utilize optical check article carrying platform to carry out trickle adjustment to lighting angle, reach the object of accurate luminous intensity distribution, make up the defect of traditional light-configuration mode, improve the quality that manifests of potential material evidence.
Referring to Fig. 1, when use, the hemispherical lamp body 2 of irradiator of the present invention is covered on the object stage 300 of putting checking matter (object of rough surface) 400, and make the central authorities of the base plate 8 middle tappings of checking matter 200 in hemispherical lamp body 2.Open as required several arbitrarily in 8 light source switch K1-K8, the light uniform irradiation of needed wavelength light source is to the inner surface of hemispherical lamp body 2, diffuse-reflectance uniform light distribution by diffuse-reflectance coating 3 is on checking matter 400 rough surfaces on potential vestige, improve the definition that trace evidence imaging shows, contributed to improve evidence obtaining and working quality of case handling.
When irradiator of the present invention uses, need make following preparation: two buckles 11 of camera lens connector 1 are triped, lens interface 12 is separated with lamp body interface 13, shown in camera lens 100(Fig. 4 of this lens interface 12 and material evidence camera) be threaded.Once ready, again two buckles 11 are connected fast, reach material evidence camera camera lens 100 and the object that the lamp body 2 with this irradiator is connected fast, then drawing and pulling type wavelength graduated filter 15 is seated in slotted eye 14, easy to use, only need the operator photograph of collecting evidence.
As shown in Figure 5, the photographic means of a kind of forensic science rough surface finger mark evidence obtaining of the present invention, comprises following steps:
S1, is placed in checking matter on the table top of object stage, and this object stage adopts multidirectional controlled material evidence photography article carrying platform position finder, and the table top of this platform position finder carries out the adjustment of all around, upper and lower, rotation and incline direction to material evidence;
S2, connects a uniform light distribution irradiator by the camera lens of material evidence camera, and the light source of this uniform light distribution irradiator irradiates on checking matter;
The lamp body of described uniform light distribution irradiator is hemispherical shell, and its top and a camera lens connector are spirally connected, and opens the annular bottom plate of circular hole in the middle of bottom is provided with, and inner surface is equipped with diffuse-reflectance coating; Described camera lens connector is tubular fitting, and it is made up of upper and lower two parts: top is the lens interface of junctional complex license camera lens, and bottom is the lamp body interface that connects lamp body; The top of the bottom of lens interface and lamp body interface is provided with two pairs of buckles of button mutually, and two pairs of buckles are arranged on respectively the two ends of a diameter line of camera lens connector; Two pairs of buckles after detaining mutually link into an integrated entity the lens interface in camera lens connector and lamp body interface; Have at the middle part of described lamp body interface the slotted eye that two communicates, this slotted eye is built-in with a centre and opens round-meshed becket, becket aperture is at least identical with the optic diameter of described material evidence camera camera lens, and both centers of circle are consistent, on this becket, be provided with a drawing and pulling type wavelength graduated filter;
The built-in power that the power supply of described uniform light distribution irradiator is made up of lithium battery, lithium battery is arranged in described lamp body and is positioned on the base plate of circular hole two side positions;
The light source of described uniform light distribution irradiator is a kind of Uniform Illumination light source, the LED strip annular light source different by several wavelength forms, wherein at least comprise three part light: 200-400nm ultraviolet, 400-700nm visible ray, and in visible ray, contain the green glow of 420-430nm left and right, 700-1000nm infrared ray; Several annular light sources are arranged on the base plate in lamp body and are positioned at the inner side of lithium battery, to the inner surface uniformly light-emitting of lamp body, described several annular light source is connected in parallel in two power source loads ends of described lithium battery by wire, each annular light source is connected with power supply by light source switch separately;
S3, opens the power supply of described uniform light distribution irradiator;
S4, opens the white light LEDs power supply in light source;
S5, opens material evidence camera power supply, opens camera finding screen, finds a view, focuses;
S6, adjust the direction of described object stage table top, material evidence is carried out to the trickle movement of all around, upper and lower, rotation and incline direction, the screen of finding a view by material evidence camera is observed the rough grain on the material evidence surface disturbed condition to finger mark, finds optimal light distribution angle (refer to find finger mark manifest light distribution angle the most clearly);
S7, open one by one the LED power supply of the variant wavelength in light source, the screen of finding a view by material evidence camera is observed the rough grain on the material evidence surface disturbed condition to finger mark, finds the wavelength (refer to find finger mark manifest the wavelength of LED light source the most clearly) of optimal LED light source;
S8, slip drawing and pulling type graduated filter, constantly change filter wavelength, the disturbed condition of the rough grain of observing material evidence surface by the screen of finding a view of material evidence camera to finger mark, does the wavelength of finding best graduated filter (refer to that finding finger mark manifests the wavelength of graduated filter the most clearly?);
S9, repeat above-mentioned steps S7 and S8, the screen of finding a view by material evidence camera is observed the rough grain on the material evidence surface disturbed condition to finger mark, find the wavelength combinations (refer to find finger mark manifest the wavelength combinations of LED light source and graduated filter the most clearly) of optimal LED light source and graduated filter, material evidence camera exposure, carries out material evidence photograph.Then photograph gained image is imported to computer and carry out image processing, photograph print.
Light source described in the present embodiment is made up of 8 different LED strip annular light sources of wavelength, is respectively: 365nm ultraviolet, 420nm visible ray, 450nm visible ray, 520nm visible ray, 590nm visible ray, 620nm visible ray, 945nm infrared ray and white light.
The sheet of graduated filter described in the present embodiment adopts narrow wave band plated film filter lens, and its length direction wave-length coverage is from left to right filtered by 365nm to 1100nm gradual change.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for object of the present invention is described, and not as limitation of the invention, as long as in essential scope of the present invention, variation, modification to the above embodiment all will drop in the scope of claim of the present invention.
Claims (10)
1. a photographic means for forensic science rough surface finger mark evidence obtaining, is characterized in that comprising:
Material evidence camera; Uniform light distribution irradiator, is connected with the camera lens of material evidence camera; Object stage, on its table top, put checking matter, the light source of described uniform light distribution irradiator irradiates on checking matter, and this object stage adopts multidirectional controlled material evidence photography article carrying platform position finder, and the table top of this platform position finder carries out the adjustment of all around, upper and lower, rotation and incline direction to material evidence;
Described uniform light distribution irradiator comprises:
Lamp body, is hemispherical shell, and its top is provided with the female circular hole of tool, opens the annular bottom plate of circular hole in the middle of bottom is provided with, and the inner surface of lamp body is equipped with diffuse-reflectance coating;
Camera lens connector, is tubular fitting, and it is made up of upper and lower two parts: top is lens interface, and lens interface outer surface of cupular part is provided with the external screw thread matching with the female thread of material evidence camera camera lens; Bottom is lamp body interface, and lamp body interface bottom is provided with the external screw thread matching with the female thread of lamp body circular hole, and is mutually threaded; The top of the bottom of lens interface and lamp body interface is provided with two pairs of buckles of button mutually, and two pairs of buckles are arranged on respectively the two ends of a diameter line of camera lens connector; Two pairs of buckles after detaining mutually link into an integrated entity the lens interface in camera lens connector and lamp body interface; Have at the middle part of described lamp body interface the slotted eye that two communicates, this slotted eye is built-in with a centre and opens round-meshed becket, becket aperture is at least identical with the optic diameter of described material evidence camera camera lens, and both centers of circle are consistent, on this becket, be provided with a drawing and pulling type wavelength graduated filter, the housing of filter lens is flat rectangular, is rectangle graduated filter sheet in frame, and the width of graduated filter sheet is suitable with the optic diameter of camera gun;
Built-in power, comprises: lithium battery is a kind of rechargeable lithium battary, and it is arranged in described lamp body and is positioned on the base plate of circular hole two side positions, and it has the load end of two supply power supplys; On and off switch, is arranged on the outer surface of lamp body, and is connected on by wire between a power end and a load end of lithium battery, and another load end directly connects another power end of lithium battery; Charger interface, is arranged on the outer surface of lamp body, and is connected with two power ends of described lithium battery by wire;
Light source, is a kind of Uniform Illumination light source, and the LED strip annular light source different by several wavelength forms, wherein at least to comprise three part light: 200-400nm ultraviolet, 400-700nm visible ray, and in visible ray, contain the green glow about 420-430nm, 700-1000nm infrared ray; Several annular light sources are arranged on the base plate in lamp body and are positioned at the inner side of lithium battery, to the inner surface uniformly light-emitting of lamp body, described several annular light source is connected in parallel in two power source loads ends of described lithium battery by wire, wherein one end of each annular light source is connected with a load end of power supply by light source switch separately.
2. the photographic means of a kind of forensic science rough surface finger mark evidence obtaining as claimed in claim 1, is characterized in that:
Described light source is made up of 8 different LED strip annular light sources of wavelength, is respectively: 365nm ultraviolet, 420nm visible ray, 450nm visible ray, 520nm visible ray, 590nm visible ray, 620nm visible ray, 945nm infrared ray and white light.
3. the photographic means of a kind of forensic science rough surface finger mark evidence obtaining as claimed in claim 1 or 2, is characterized in that:
The light source switch of described 8 annular light sources is by remote controller control, and described remote controller adopts wireless transmission, and the each button of remote controller is corresponding with the each switch wireless transmission in described 8 light source switchs, and operating frequency is 433MHz.
4. the photographic means of a kind of forensic science rough surface finger mark evidence obtaining as claimed in claim 1, is characterized in that:
Described lithium battery is 12.6V.
5. the photographic means of a kind of forensic science rough surface finger mark evidence obtaining as claimed in claim 1, is characterized in that:
Between a load end of described on and off switch and lithium battery, be also connected a power supply indicator, it is arranged on the outer surface of described lamp body.
6. the photographic means of a kind of forensic science rough surface finger mark evidence obtaining as claimed in claim 1, is characterized in that:
Described graduated filter sheet adopts narrow wave band plated film filter lens, and its length direction wave-length coverage is from left to right filtered by 365nm to 1100nm gradual change.
7. the photographic means of a kind of forensic science rough surface finger mark evidence obtaining as claimed in claim 1, is characterized in that:
Described material evidence camera adopts all full-spectrum cameras of sensitivity of ultraviolet, visible ray and infrared ray.
8. a photographic means for forensic science rough surface finger mark evidence obtaining, is characterized in that comprising following steps:
S1, is placed in checking matter on the table top of object stage, and this object stage adopts multidirectional controlled material evidence photography article carrying platform position finder, and the table top of this platform position finder carries out the adjustment of all around, upper and lower, rotation and incline direction to material evidence;
S2, connects a uniform light distribution irradiator by the camera lens of material evidence camera, and the light source of this uniform light distribution irradiator irradiates on checking matter;
The lamp body of described uniform light distribution irradiator is hemispherical shell, and its top and a camera lens connector are spirally connected, and opens the annular bottom plate of circular hole in the middle of bottom is provided with, and inner surface is equipped with diffuse-reflectance coating; Described camera lens connector is tubular fitting, and it is made up of upper and lower two parts: top is the lens interface of junctional complex license camera lens, and bottom is the lamp body interface that connects lamp body; The top of the bottom of lens interface and lamp body interface is provided with two pairs of buckles of button mutually, and two pairs of buckles are arranged on respectively the two ends of a diameter line of camera lens connector; Two pairs of buckles after detaining mutually link into an integrated entity the lens interface in camera lens connector and lamp body interface; Have at the middle part of described lamp body interface the slotted eye that two communicates, this slotted eye is built-in with a centre and opens round-meshed becket, becket aperture is at least identical with the optic diameter of described material evidence camera camera lens, and both centers of circle are consistent, on this becket, be provided with a drawing and pulling type wavelength graduated filter;
The built-in power that the power supply of described uniform light distribution irradiator is made up of lithium battery, lithium battery is arranged in described lamp body and is positioned on the base plate of circular hole two side positions;
The light source of described uniform light distribution irradiator is a kind of Uniform Illumination light source, the LED strip annular light source different by several wavelength forms, wherein at least comprise three part light: 200-400nm ultraviolet, 400-700nm visible ray, and in visible ray, contain the green glow of 420-430nm left and right, 700-1000nm infrared ray; Several annular light sources are arranged on the base plate in lamp body and are positioned at the inner side of lithium battery, to the inner surface uniformly light-emitting of lamp body, described several annular light source is connected in parallel in two power source loads ends of described lithium battery by wire, each annular light source is connected with power supply by light source switch separately;
S3, opens the power supply of described uniform light distribution irradiator;
S4, opens the white light LEDs power supply in light source;
S5, opens material evidence camera power supply, opens camera finding screen, finds a view, focuses;
S6, adjust the direction of described object stage table top, material evidence is carried out to the trickle movement of all around, upper and lower, rotation and incline direction, the disturbed condition of the rough grain of observing material evidence surface by the screen of finding a view of material evidence camera to finger mark, finds finger mark and manifests light distribution angle the most clearly;
S7, opens the LED power supply of the variant wavelength in light source one by one, and the disturbed condition of the rough grain of observing material evidence surface by the screen of finding a view of material evidence camera to finger mark, finds finger mark and manifest the wavelength of LED light source the most clearly;
S8, slip drawing and pulling type graduated filter, constantly changes filter wavelength, observes the rough grain on the material evidence surface disturbed condition to finger mark by the screen of finding a view of material evidence camera, finds finger mark and manifests the wavelength of graduated filter the most clearly;
S9, repeats above-mentioned step S7 and S8, observes the rough grain on the material evidence surface disturbed condition to finger mark by the screen of finding a view of material evidence camera, finds finger mark and manifests the wavelength combinations of LED light source and graduated filter the most clearly; Material evidence camera exposure, carries out material evidence photograph.
9. the photographic means of forensic science rough surface finger mark evidence obtaining as claimed in claim 8, is characterized in that:
Described light source is made up of 8 different LED strip annular light sources of wavelength, is respectively: 365nm ultraviolet, 420nm visible ray, 450nm visible ray, 520nm visible ray, 590nm visible ray, 620nm visible ray, 945nm infrared ray and white light.
10. the photographic means of forensic science rough surface finger mark evidence obtaining as claimed in claim 8, is characterized in that:
Described graduated filter sheet adopts narrow wave band plated film filter lens, and its length direction wave-length coverage is from left to right filtered by 365nm to 1100nm gradual change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310100860.8A CN104068863B (en) | 2013-03-26 | 2013-03-26 | Photographic means and the photographic means thereof of the evidence obtaining of forensic science rough surface finger mark |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310100860.8A CN104068863B (en) | 2013-03-26 | 2013-03-26 | Photographic means and the photographic means thereof of the evidence obtaining of forensic science rough surface finger mark |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104068863A true CN104068863A (en) | 2014-10-01 |
| CN104068863B CN104068863B (en) | 2016-05-25 |
Family
ID=51590763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310100860.8A Active CN104068863B (en) | 2013-03-26 | 2013-03-26 | Photographic means and the photographic means thereof of the evidence obtaining of forensic science rough surface finger mark |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104068863B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108508681A (en) * | 2018-05-24 | 2018-09-07 | 上海万宝商琏电子商务有限公司 | A kind of shooting case for shooting jewelry |
| CN111965921A (en) * | 2020-09-07 | 2020-11-20 | 南京钟山虚拟现实技术研究院有限公司 | Multi-flash-lamp photographic device for high-definition imaging |
| CN112751985A (en) * | 2020-12-25 | 2021-05-04 | 长春理工大学 | Trace inspection device based on color separation photography and trace inspection method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4983846A (en) * | 1989-08-22 | 1991-01-08 | Arturo M. Rios | Portable fingerprint detection method and device |
| WO1993019433A1 (en) * | 1992-03-25 | 1993-09-30 | Dactylamatic, Inc. | Fingerprint observation and recording system |
| CN101889865A (en) * | 2010-06-17 | 2010-11-24 | 山东警察学院 | Method for extracting handprints on irregular object |
| CN202033567U (en) * | 2011-04-15 | 2011-11-09 | 张家港市公安局 | Arc surface light source illuminating device for material evidence photographing |
-
2013
- 2013-03-26 CN CN201310100860.8A patent/CN104068863B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4983846A (en) * | 1989-08-22 | 1991-01-08 | Arturo M. Rios | Portable fingerprint detection method and device |
| WO1993019433A1 (en) * | 1992-03-25 | 1993-09-30 | Dactylamatic, Inc. | Fingerprint observation and recording system |
| CN101889865A (en) * | 2010-06-17 | 2010-11-24 | 山东警察学院 | Method for extracting handprints on irregular object |
| CN202033567U (en) * | 2011-04-15 | 2011-11-09 | 张家港市公安局 | Arc surface light source illuminating device for material evidence photographing |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108508681A (en) * | 2018-05-24 | 2018-09-07 | 上海万宝商琏电子商务有限公司 | A kind of shooting case for shooting jewelry |
| CN111965921A (en) * | 2020-09-07 | 2020-11-20 | 南京钟山虚拟现实技术研究院有限公司 | Multi-flash-lamp photographic device for high-definition imaging |
| CN111965921B (en) * | 2020-09-07 | 2022-02-18 | 南京钟山虚拟现实技术研究院有限公司 | Multi-flash-lamp photographic device for high-definition imaging |
| CN112751985A (en) * | 2020-12-25 | 2021-05-04 | 长春理工大学 | Trace inspection device based on color separation photography and trace inspection method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104068863B (en) | 2016-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6572309B2 (en) | Composite lighting apparatus and method based on image quality control | |
| FI120958B (en) | Illumination of the body | |
| CN102855626B (en) | Light source direction is demarcated and human body information three-dimensional acquisition method and apparatus | |
| CN106295536B (en) | Self-adapting type iris identification device and the method for carrying out iris recognition using the device | |
| CN104068863A (en) | Photographing device for forensic science rough surface fingerprint evidence and photographing method thereof | |
| CN106415239A (en) | A mobile microscopy device being able to take images in different wavelengths (multispectral) | |
| TW201909619A (en) | A mini thermography for enhance nir captures images | |
| CN106993117A (en) | A kind of auxiliary lens of Intelligent mobile equipment and illumination adjustment system | |
| CN104068864A (en) | Photographing device for forensic science spherical evidence surface latent fingerprint evidence and photographing method thereof | |
| US8265352B1 (en) | Photographic fingerprint collection and imaging system | |
| CN105572091B (en) | A kind of chlorophyll fluorescence detection device and detection method | |
| CN107122717A (en) | A kind of anti-cheating information control device of recognition of face | |
| KR101167010B1 (en) | Apparatus and method for led module inspecting | |
| CN109528156A (en) | A kind of self-help intelligent visual function screening system | |
| CN213812592U (en) | Multispectral imaging device for stroboscopic mobile phone | |
| CN104809423B (en) | Bar code reading facility | |
| CN105678228B (en) | Iris recognition optical imagery module and application method for safety identification authentication | |
| CN106308729B (en) | Imaging method, device and capsule medical apparatus for endoscope | |
| CN203224704U (en) | Physical evidence camera lens-based uniform grading irradiator | |
| KR102537267B1 (en) | A Skin Image Processing Method and Camera Module for the Same Method | |
| CN205268138U (en) | Wide area eye ground camera | |
| CN110058400A (en) | LED based endoscope multiple light courcess controllable Lighting System | |
| CN106352975B (en) | Wearable dosage test equipment of heralding daybreak | |
| CN206114545U (en) | Singly take photograph wide visual field of camera vision thread detection device | |
| CN105259649B (en) | Combined movable microscope pedestal and microscope having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |