CN108333851A - The portable potential material evidence light distribution evidence obtaining light supply apparatus of one kind and its evidence collecting method - Google Patents
The portable potential material evidence light distribution evidence obtaining light supply apparatus of one kind and its evidence collecting method Download PDFInfo
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- CN108333851A CN108333851A CN201810215703.4A CN201810215703A CN108333851A CN 108333851 A CN108333851 A CN 108333851A CN 201810215703 A CN201810215703 A CN 201810215703A CN 108333851 A CN108333851 A CN 108333851A
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- light source
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- material evidence
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- 239000000463 material Substances 0.000 title claims abstract description 122
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 239000011521 glass Substances 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 10
- 229910052744 lithium Inorganic materials 0.000 description 10
- 238000007689 inspection Methods 0.000 description 5
- 230000011514 reflex Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 244000154870 Viola adunca Species 0.000 description 1
- 235000005811 Viola adunca Nutrition 0.000 description 1
- 235000013487 Viola odorata Nutrition 0.000 description 1
- 235000002254 Viola papilionacea Nutrition 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/06—Special arrangements of screening, diffusing, or reflecting devices, e.g. in studio
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Accessories Of Cameras (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses a kind of portable potential material evidence light distribution evidence obtaining light supply apparatus, including lens interface, light source shell, light bulb, semi-transparent semi-reflecting lens and light source.Connect to the lower end of lens interface and the top side detachable of light source shell；The bottom of light source shell is connected with the top of light bulb.Semi-transparent semi-reflecting lens are obliquely arranged in light source shell, and can penetrate ultraviolet light, and the angle between semi-transparent semi-reflecting lens and horizontal plane can be adjusted in predetermined range.Light source includes multiband area source and purple outer light source；Multiband area source is located at the side of semi-transparent semi-reflecting lens；Purple outer light source is set to the lower section of semi-transparent semi-reflecting lens.The top of light source shell is equipped with filter disc slot, and the position of filter disc slot makes the optical filter being inserted into the filter disc slot be located at the underface of connector interface.The invention also discloses a kind of evidence collecting methods of portable potential material evidence light distribution evidence obtaining light supply apparatus.The present invention disclosure satisfy that complicated crime case scene needs the demand of a variety of light-configuration modes, and easy to operate, easy to carry.
Description
Technical field
The present invention relates to material evidence camera light sources.
Background technology
Material evidence camera installation（Containing material evidence camera, camera light source etc.）Be public security organs, procuratorial organs and people's court, Si Deng departments to material evidence carry out
Evidence obtaining is further to carry out the important equipment of trace identification.Material evidence camera installation can collect evidence to the trace on object, be broken
Case, deciding on a verdict provides foundation, therefore material evidence camera installation plays an important role to the trial work of the cases such as criminal, civil.
Criminal-scene is varied, it means that criminal technique people's police will be preparing to reply scene when going out scene
Various situations, in many cases on object surface potential trace be with available light be difficult to take the photograph into the photo of human viewable, because
This, in face of changeable scene of reconnoitring, technical staff needs more kinds of technological means in survey processes at the scene and comes to scene
Latent trace material evidence carry out lossless extraction, reconnoitre means in improvement, promoted while reconnoitre efficiency, high-tech, it is multi-functional, one
The needs of body investigated equipment on the spot and be suitable for criminal technique development.
Each existing light distribution evidence collecting method, is required for carrying specific light source, in face of complicated criminal scene and
Examination of material evidence appraisal, scene inspection personnel generally require to combine different light distribution photograph inspection parties using various light sources equipment
Method（Such as orienting reflex photograph, dark field photograph, ultraviolet reflectance photograph, infrared external reflection photograph, colour photography and visible fluorescence shine
It is equal）Mark mark is referred in particular to potential trace material evidence to be fixed, show and extract.But it is different light distribution photograph inspection
Different equipment needed for proved recipe method, volume is larger, and it is very inconvenient to carry.Currently, being shone both at home and abroad in orienting reflex photograph, dark field
Phase, ultraviolet reflectance photograph, infrared external reflection photograph, colour photography and visible fluorescence photographic system realize evidence obtaining respectively, due to volume
It is larger not have portability, it is generally only applicable to laboratory inspection appraisal, is unfavorable for onsite application.
Invention content
Technical problem to be solved by the present invention lies in providing a kind of portable potential material evidence light distribution to collect evidence light supply apparatus,
Can meet the needs of complicated crime case scene needs a variety of light-configuration modes, and easy to operate, it is easy to carry.
Another technical problem to be solved by this invention is to provide a kind of portable potential material evidence light distribution evidence obtaining light source dress
The evidence collecting method set.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
Portable potential material evidence light distribution evidence obtaining light supply apparatus, including lens interface, light source shell, light bulb, semi-transparent semi-reflecting lens and light
Source；It connects to the lower end of lens interface and the top side detachable of light source shell, and lens interface can be with the mirror of material evidence camera
It is detachably connected；The bottom of light source shell is connected with the top of light bulb；Semi-transparent semi-reflecting lens are obliquely arranged in light source shell
It is interior；Wherein, semi-transparent semi-reflecting lens can penetrate ultraviolet light, and the angle between semi-transparent semi-reflecting lens and horizontal plane can be in scheduled range
Inside it is adjusted；Light source includes multiband area source and purple outer light source；Multiband area source is arranged inside light source shell, and
Positioned at the side of semi-transparent semi-reflecting lens；Multiband area source has purple light light source, blue light source, green-light source, red-light source and white
Radiant；Purple outer light source is set to the lower section of semi-transparent semi-reflecting lens, and purple outer light source is by annular infrared light supply and annular ultraviolet light
Source forms；The center line of annular infrared light supply, annular ultraviolet source center line to be located at same with the center line of light bulb straight
On line；The top of light source shell is equipped with the filter disc slot for being inserted into optical filter, and the position of filter disc slot to be inserted into the filter disc slot
Optical filter be located at the underface of connector interface.
The present invention also provides a kind of evidence collecting methods of above-mentioned portable potential material evidence light distribution evidence obtaining light supply apparatus, including
Following steps：
S1, the portable potential material evidence light distribution evidence obtaining light supply apparatus alignment is detected material evidence；
S2, portable potential material evidence light distribution evidence obtaining light supply apparatus is connect with material evidence camera；
S3, it is found a view and is focused with material evidence camera；
S4, purple light light source, blue light source, green-light source, red-light source, white light source, annular infrared light supply and ring are opened successively
Shape ultraviolet source, it is dry by the contrast and background of the screen observation material evidence image of finding a view of material evidence camera after often opening a light source
Situation is disturbed, and adjusts the angle between semi-transparent semi-reflecting lens and horizontal plane, if can see clearly material evidence image, stops opening
Remaining light source, and using current light source when seeing clear material evidence image as exposure light source, exposed with material evidence camera, into
Row material evidence is taken a picture；If still cannot see that clearly material evidence image after having opened all above-mentioned light sources, S5 is entered step；
If S5, not seeing clearly material evidence image after executing step S4, to portable potential material evidence light distribution evidence obtaining light source dress
It is inserted into optical filter in the filter disc slot set, and the angle between semi-transparent semi-reflecting lens and horizontal plane is adjusted to 45 °, then opens successively
Purple light light source, blue light source, green-light source, red-light source, white light source, annular infrared light supply and annular ultraviolet source, are often opened
After opening a light source, pass through the contrast and background interference situation of the screen observation material evidence image of finding a view of material evidence camera；It is opening
After all above-mentioned light sources, it will be seen that most clearly material evidence image when light source as exposure light source, open exposure light
Source is exposed with material evidence camera, carries out material evidence photograph.
After adopting the above technical scheme, the present invention has at least the following advantages：
1, portable potential material evidence light distribution evidence obtaining light supply apparatus collection orienting reflex light path of the invention, ultraviolet reflectance light path, infrared
Reflected light path, colour photography light path, visible fluorescence light path in one, for complicated crime case scene for light-configuration mode not
Guarantee is provided with demand, not only improves latent trace material evidence image quality on object surface, and improve site inspection
Efficiency；
2, compared with the case where needing to take into account camera and light source simultaneously when existing directional mirror is without automatic light source, use, this
The portable potential material evidence light distribution evidence obtaining light supply apparatus of invention can be with material evidence camera camera lens fast assembling-disassembling, it is only necessary to an operation
Personnel can be conveniently fixed in the camera lens front end of material evidence camera, and then realize evidence obtaining.
Description of the drawings
Fig. 1 shows the structural representation for light supply apparatus of collecting evidence according to the portable potential material evidence light distribution of one embodiment of the invention
Figure.
Fig. 2 shows the circuit theories of portable potential material evidence light distribution evidence obtaining light supply apparatus according to an embodiment of the invention
Figure.
Fig. 3 shows the assembling schematic diagram of the camera lens of light source shell and material evidence camera in Fig. 1.
Fig. 4 shows that the principle of the angle between adjusting semi-transparent semi-reflecting lens and horizontal plane according to an embodiment of the invention is shown
It is intended to.
Specific implementation mode
Further explanation is made to the present invention below in conjunction with the accompanying drawings.
It please refers to Fig.1.Portable potential material evidence light distribution evidence obtaining light supply apparatus according to an embodiment of the invention, including camera lens
Interface 1, light source shell 2, light bulb 3, semi-transparent semi-reflecting lens 4 and light source.
The lower end of lens interface 1 is connect with the top side detachable of light source shell 2, and lens interface 1 can shine with material evidence
The camera lens 10 of camera is detachably connected.Please refer to Fig. 3.In the present embodiment, the upper outside face of lens interface 1 is equipped with and object
The external screw thread that the internal thread of the camera lens 10 of license camera matches.The bottom of lens interface 1 is equipped with two with the top of light source shell 2
To the buckle 11 mutually detained.Buckle 11 is existing camera buckle, the mutual fastener being made of one button of a card, wherein each pair of card
Card in button 11 is mutually detained with the bottom for being separately mounted to lens interface 1 and the top of light source shell 2, two pairs of buckles 11 are buckled by camera lens
Interface 1 links into an integrated entity with light source shell 2.Dotted arrow in Fig. 3 indicates the component assembly direction in device.
The bottom of light source shell 2 is connected with the top of light bulb 3.Semi-transparent semi-reflecting lens 4 are obliquely arranged in light source shell 2,
And semi-transparent semi-reflecting lens 4 can penetrate ultraviolet light.Angle between semi-transparent semi-reflecting lens 4 and horizontal plane can carry out in predetermined range
It adjusts, to meet the needs of dark field photograph.In the present embodiment, above-mentioned scheduled ranging from 35 °~55 °.
It please refers to Fig.4.In the present embodiment, one end of semi-transparent semi-reflecting lens 4 is articulated with light source shell 2；Semi-transparent semi-reflecting lens 4
The side of the other end is equipped with the stud 41 horizontally outward extended.The side of light source shell 2 is equipped with perforation light source shell 2 side, simultaneously
The arc groove 21 of the rotational angle range of semi-transparent semi-reflecting lens 4 can be limited, the outboard end of stud 41 passes through arc groove 21, locking rotating
Button 24 is connect with the outboard end spiral of stud 41, and semi-transparent semi-reflecting lens 4 are locked to the side of light source shell 2.Arc groove 21
It is labeled with angle index 25 beside outer circle arc side or inner circle arc side, by reading the angle index 25, it is known that semi-transparent half
Corner dimension between anti-mirror 4 and horizontal plane.When adjusting the angle between semi-transparent semi-reflecting lens 4 and horizontal plane, only need to first it unclamp
Locking knob 24 holds stud 41 and rotates semi-transparent semi-reflecting lens 4, until semi-transparent semi-reflecting lens 4 turn to the position for it is expected to reach, then revolves
Tight locking knob 24.Arc groove 21 allows model of the angle between semi-transparent semi-reflecting lens 4 and horizontal plane at 45 ° ± 10 °
It is adjusted in enclosing.
In the present embodiment, the material of semi-transparent semi-reflecting lens 4 is quartz, so that ultraviolet light can penetrate, to meet purple
The needs of external reflectance photograph.
Further, the top surface of semi-transparent semi-reflecting lens 4 is equipped with anti-reflection film 42, and anti-reflection film 42 can reduce the reflection of light and increase light
Transmitance.Preferably, the refractive index size of anti-reflection film 42 is between the refractive index of quartz material and the refractive index of air, such as
This may make the light transmittance higher of blue violet light.The magnesium fluoride film prepared by the method for vacuum evaporation can be used in anti-reflection film 42.
Light source includes multiband area source 51 and purple outer light source 52（Please referring also to Fig. 2）.Multiband area source 51 is set
It sets inside light source shell 2, and positioned at the side of semi-transparent semi-reflecting lens 4.Multiband area source 51 has purple light light source, blue light light
Source, green-light source, red-light source and white light source.Purple outer light source is set to the lower section of semi-transparent semi-reflecting lens 4, purple outer light source by
Annular infrared light supply 521 and annular ultraviolet source 522 form；The center line of annular infrared light supply 521, annular ultraviolet source 522
Center line of the center line with light bulb 3 be located on the same line.
In the present embodiment, the area source that multiband area source 51 is made of the LED light source of a variety of wave bands, face are semi-transparent
Semi-reflective mirror 4 shines, and the wavelength of LED light source is divided into five wave bands, includes for the launch wavelength ranging from purple light of 401-405nm
LED purple lights light source, for the launch wavelength ranging from blue light of 450-480nm LED blue light sources, for launch wavelength ranging from
The LED green-light sources of the green light of 500-550nm, for the launch wavelength ranging from feux rouges of 615-635nm LED red-light sources with
And the LED white light sources for the launch wavelength ranging from white light of 420-680nm, to meet orienting reflex photograph, color separation simultaneously
The needs of photograph and visible fluorescence photograph.
Further, translucent glass 53, the center of multiband area source 51 are equipped in the front of multiband area source 51
The central point of the minute surface of point, the central point of translucent glass 52 and semi-transparent semi-reflecting lens 4 is in the same horizontal line.Work as semi-transparent semi-reflecting lens
When angle between 4 and horizontal plane is 45 °（The angle between semi-transparent semi-reflecting lens 4 and the center line of light bulb 3 is also 45 ° at this time）,
The light irradiation of multiband area source 51 can form incidence angle with angle of reflection into 180 degree by the reflection of the semi-transparent semi-reflecting lens 4
Coaxial radiant, improve to smooth surface trace evidence imaging display clarity, help to improve evidence obtaining and matter of handling a case
Amount.
In the present embodiment, purple outer light source is arranged in the inside of light bulb 3, shines towards light bulb inner homogeneous.Annular is red
Outer light source 521 is annular LED infrared light supply, and annular ultraviolet source 522 is annular LED ultraviolet source.
The top of light source shell 2 is equipped with the filter disc slot 22 for being inserted into optical filter, and the position of filter disc slot 22, which to be inserted into, is somebody's turn to do
Optical filter in filter disc slot 22 is located at the underface of lens interface 1.By the way that different optical filters to be inserted into filter disc slot 22, can expire
The demand that foot is ultraviolet, infrared, luminescence generated by light is taken a picture.In the present embodiment, the shape of light source shell is cuboid.Filter disc slot 22
Quantity is one layer.In other embodiments, the quantity of filter disc slot 22 can also be multilayer.
Light bulb 3 is made of cylindrical barrel 31 and tubaeform expansion mouth 32, and the outer diameter of expansion mouth 32 is from top to bottom
Gradually increase, this shape can increase stability.The height of light bulb 3 is 45cm-55cm, so that the figure of material evidence camera shooting
As obtaining good contrast grade.Preferably, the height of light bulb 3 is 50cm.The inner wall surface of light bulb 3 is equipped with light-absorbing coating, to
Strengthen inhibiting effect of the orienting reflex photograph to background.In a preferred embodiment, the inner wall surface extinction of light bulb 3
Coating includes the extinction materials such as carbon black and metal oxide, has good light absorptive, can keep very low surface reflectivity.Object
The center line of the optical center point of license camera, the minute surface central point of semi-transparent semi-reflecting lens 4 and light bulb 3 is on same vertical line.
Fig. 2 is referred to, portable potential material evidence light distribution evidence obtaining light supply apparatus according to an embodiment of the invention includes power supply
Circuit, power circuit can provide electric energy for portable potential material evidence light distribution evidence obtaining light supply apparatus comprising recyclable charging
Lithium battery 80, the first power switch 81, second source switch 82, power supply indicator 83 and charger interface 84.The present embodiment
Lithium battery 80 be 12.6V, be mounted on light source shell 2 outer surface side.Lithium battery 80 can provide 4 hours stablize and supply
Electricity is suitable for the work requirements of various extreme environments.There are two the load end A and B of supply power supply for lithium battery 80；First power supply
Switch 81 and second source switch 82 are mounted on the outer surface side of light source shell 2, one end and second of the first power switch 81
One end of power switch 82 is all connected to a load end A of lithium battery 80, the other end of the first power switch 81 and the second electricity
The other end of source switch 82 is connect with multiband area source 51 and purple outer light source 52 respectively, outside multiband area source 51 and purple
Light source 52 is all connected to another load end B of lithium battery 80.Power supply indicator 83 is connected to a power end of lithium battery 80
Between a load end A, to indicate that the working condition of of lithium battery 80 itself, power supply indicator 83 are mounted on light source shell 2
Outer surface.Load end B is directly connected to another power end of lithium battery 80.Charger interface 84 is mounted on light source shell 2
Outer surface in the following, and being connect with two power ends of lithium battery 80 by conducting wire.
Portable potential material evidence light distribution evidence obtaining light supply apparatus according to an embodiment of the invention is before using first by light source shell
The buckle of 2 upper end of body is unbuttoned, and is connect with 10 spiral of camera lens of material evidence camera after so that lens interface 1 is detached light source shell 2.It uses
When will buckle quickly connection, so that material evidence camera and portable potential material evidence light distribution light supply apparatus of collecting evidence quickly is connect, user
Just, only need a people that can carry out evidence obtaining photograph.
The invention also discloses a kind of evidence collecting methods of portable potential material evidence light distribution evidence obtaining light supply apparatus comprising following
Step：
S1, portable potential material evidence light distribution evidence obtaining light supply apparatus alignment is detected material evidence.
S2, portable potential material evidence light distribution evidence obtaining light supply apparatus is connect with material evidence camera.
S3, it is found a view and is focused with material evidence camera.
S4, purple light light source, blue light source, green-light source, red-light source, white light source, annular infrared light supply are opened successively
With annular ultraviolet source, after often opening a light source, pass through the contrast and the back of the body of the screen observation material evidence image of finding a view of material evidence camera
Scape disturbed condition, and the angle between semi-transparent semi-reflecting lens and horizontal plane is adjusted, if can see clearly material evidence image, stop
Remaining light source is opened, and using current light source when seeing clear material evidence image as exposure light source, is exposed with material evidence camera
Light carries out material evidence photograph；If still cannot see that clearly material evidence image after having opened all above-mentioned light sources, enter step
Rapid S5.
In the implementation procedure of step S4, not necessarily by purple light light source, blue light source, green-light source, red-light source,
White light source, annular infrared light supply and annular ultraviolet source are all turned on one time, after opening a certain light source, by adjusting adjusting
Angle between semi-transparent semi-reflecting lens and horizontal plane has had been observed that clearly material evidence image, and there is no need to open remaining light source
.For example, clearly material evidence image has been had been observed that if opening after blue light source, there is no need to be then turned on green light light
Source, red-light source, white light source, annular infrared light supply and annular ultraviolet source, need not also execute follow-up step S5, and
As long as using blue light source as exposure light source, exposed with material evidence camera, carries out material evidence photograph.
If S5, clearly material evidence image is not seen after executing the step S4, to portable potential material evidence light distribution
It is inserted into optical filter in the filter disc slot of evidence obtaining light supply apparatus, and the angle between semi-transparent semi-reflecting lens and horizontal plane is adjusted to 45 °, so
Open the purple light light source, blue light source, green-light source, red-light source, white light source, annular infrared light supply and ring successively afterwards
Shape ultraviolet source, it is dry by the contrast and background of the screen observation material evidence image of finding a view of material evidence camera after often opening a light source
Disturb situation；After having opened all above-mentioned light sources, it will be seen that most clearly material evidence image when light source as exposure light
Source is opened exposure light source, is exposed with material evidence camera, and material evidence photograph is carried out.
If in step s 4, by purple light light source, blue light source, green-light source, red-light source, white light source, annular
As soon as infrared light supply and annular ultraviolet source still do not see clearly material evidence image after being all turned on time, then also needing to hold
Row step S5.It, can be by purple light light source, blue light source, green-light source, red-light source, white light light in the implementation procedure of step S5
Source, annular infrared light supply and annular ultraviolet source are all turned on one time, therefrom select see most clearly material evidence image when light
Source is as exposure light source.For example, if it is seeing most clearly material evidence image when opening annular infrared light supply, then
Just using annular infrared light supply as exposure light source, annular infrared light supply is opened, is exposed with material evidence camera, material evidence photograph is carried out
Phase.
Claims (13)
- The light supply apparatus 1. portable potential material evidence light distribution is collected evidence, including lens interface, light source shell, light bulb, semi-transparent semi-reflecting lens and Light source；The lower end of the lens interface is connect with the top side detachable of the light source shell, and lens interface can be with material evidence The camera lens of camera is detachably connected；The bottom of the light source shell is connected with the top of the light bulb；It is described semi-transparent semi-reflecting Mirror is obliquely arranged in the light source shell；It is characterized in that, the semi-transparent semi-reflecting lens can penetrate ultraviolet light, and semi-transparent half Angle between anti-mirror and horizontal plane can be adjusted in predetermined range；The light source includes multiband area source and purple Outer light source；The multiband area source is arranged inside the light source shell, and positioned at the side of the semi-transparent semi-reflecting lens；More waves Section area source has purple light light source, blue light source, green-light source, red-light source and white light source；The purple outer light source setting In the lower section of the semi-transparent semi-reflecting lens, purple outer light source is made of annular infrared light supply and annular ultraviolet source；Annular infrared light The center line in source, the center line of annular ultraviolet source are located on the same line with the center line of light bulb；The top of the light source shell is equipped with the filter disc slot for being inserted into optical filter, and the position of the filter disc slot to be inserted into the filter Optical filter in film trap is located at the underface of the connector interface.
- The light supply apparatus 2. portable potential material evidence light distribution as described in claim 1 is collected evidence, which is characterized in that the multiband face Light source includes for the LED purple lights light source of the launch wavelength ranging from purple light of 401-405nm, for launch wavelength ranging from 450- The LED blue light sources of the blue light of 480nm, for the launch wavelength ranging from green light of 500-550nm LED green-light sources, be used for LED red-light sources of the launch wavelength ranging from feux rouges of 615-635nm and for the white of launch wavelength ranging from 420-680nm The LED white light sources of light.
- The light supply apparatus 3. portable potential material evidence light distribution as described in claim 1 is collected evidence, which is characterized in that the red ultraviolet light Source is arranged in the inside of the light bulb；The annular infrared light supply is annular LED infrared light supply, and the annular ultraviolet source is ring Shape LED ultraviolet sources.
- The light supply apparatus 4. portable potential material evidence light distribution as claimed in claim 1 or 2 is collected evidence, which is characterized in that described more The front of wave band area source is equipped with translucent glass, the central point of the multiband area source, the center of the translucent glass The central point of the minute surface of point and the semi-transparent semi-reflecting lens is in the same horizontal line.
- The light supply apparatus 5. portable potential material evidence light distribution as described in claim 1 is collected evidence, which is characterized in that described semi-transparent semi-reflecting The material of mirror is quartz.
- The light supply apparatus 6. portable potential material evidence light distribution as claimed in claim 5 is collected evidence, which is characterized in that described semi-transparent semi-reflecting The top surface of mirror is equipped with anti-reflection film, the refractive index size of the anti-reflection film between quartz material refractive index and air refractive index it Between.
- The light supply apparatus 7. portable potential material evidence light distribution as described in claim 1 is collected evidence, which is characterized in that described semi-transparent semi-reflecting One end of mirror is articulated with the light source shell；The side of the other end of the semi-transparent semi-reflecting lens is equipped with the spiral shell horizontally outward extended Column；The side of the light source shell is equipped with perforation light source shell side and can limit the rotational angle of the semi-transparent semi-reflecting lens The outboard end of the arc groove of range, the stud passes through the arc groove, the outboard end spiral of locking knob and the stud to connect It connects, the semi-transparent semi-reflecting lens is locked to the side of the light source shell；It is labeled with angle index beside the outer circle arc side or inner circle arc side of the arc groove.
- The light supply apparatus 8. portable potential material evidence light distribution as claimed in claim 1 or 7 is collected evidence, which is characterized in that described semi-transparent The adjustable range of angle between semi-reflective mirror and horizontal plane is 35 °~55 °.
- The light supply apparatus 9. portable potential material evidence light distribution as described in claim 1 is collected evidence, which is characterized in that the light bulb is by justifying Cylindrical barrel and tubaeform expansion mouth composition, the outer diameter of the expansion mouth gradually increase from top to bottom.
- The light supply apparatus 10. portable potential material evidence light distribution as described in claim 1 is collected evidence, which is characterized in that the light bulb Height is 45cm-55cm.
- The light supply apparatus 11. the portable potential material evidence light distribution as described in claim 1 or 9 is collected evidence, which is characterized in that the light bulb Inner wall surface be equipped with light-absorbing coating.
- The light supply apparatus 12. portable potential material evidence light distribution as described in claim 1 is collected evidence, which is characterized in that the camera lens connects The upper outside face of mouth is equipped with the external screw thread to match with the internal thread of material evidence camera camera lens；The bottom of lens interface and light source The top of shell is equipped with two pairs of buckles mutually detained, and mutually button links into an integrated entity lens interface and light source shell to two pairs of buckles.
- 13. a kind of evidence obtaining of portable potential material evidence light distribution evidence obtaining light supply apparatus as described in claim 1 to 12 any one Method, which is characterized in that include the following steps：S1, the portable potential material evidence light distribution evidence obtaining light supply apparatus alignment is detected material evidence；S2, portable potential material evidence light distribution evidence obtaining light supply apparatus is connect with material evidence camera；S3, it is found a view and is focused with material evidence camera；S4, the purple light light source, blue light source, green-light source, red-light source, white light source, annular infrared light are opened successively Source and annular ultraviolet source, after often opening a light source, by the contrast of the screen observation material evidence image of finding a view of material evidence camera and Background interference situation, and the angle between semi-transparent semi-reflecting lens and horizontal plane is adjusted, if can see clearly material evidence image, stop Remaining light source is only opened, and using current light source when seeing clear material evidence image as exposure light source, uses material evidence camera Exposure carries out material evidence photograph；If still cannot see that clearly material evidence image after having opened all above-mentioned light sources, enter Step S5；If S5, clearly material evidence image is not seen after executing the step S4, to the portable potential material evidence light distribution It is inserted into optical filter in the filter disc slot of evidence obtaining light supply apparatus, and the angle between semi-transparent semi-reflecting lens and horizontal plane is adjusted to 45 °, so Open the purple light light source, blue light source, green-light source, red-light source, white light source, annular infrared light supply and ring successively afterwards Shape ultraviolet source, it is dry by the contrast and background of the screen observation material evidence image of finding a view of material evidence camera after often opening a light source Disturb situation；After having opened all above-mentioned light sources, it will be seen that most clearly material evidence image when light source as exposure light Source is opened exposure light source, is exposed with material evidence camera, and material evidence photograph is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810215703.4A CN108333851A (en) | 2018-03-15 | 2018-03-15 | The portable potential material evidence light distribution evidence obtaining light supply apparatus of one kind and its evidence collecting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810215703.4A CN108333851A (en) | 2018-03-15 | 2018-03-15 | The portable potential material evidence light distribution evidence obtaining light supply apparatus of one kind and its evidence collecting method |
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| CN108333851A true CN108333851A (en) | 2018-07-27 |
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| CN201810215703.4A Pending CN108333851A (en) | 2018-03-15 | 2018-03-15 | The portable potential material evidence light distribution evidence obtaining light supply apparatus of one kind and its evidence collecting method |
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