CN203551925U - Auxiliary device used in dark-field illumination digital photographing - Google Patents
Auxiliary device used in dark-field illumination digital photographing Download PDFInfo
- Publication number
- CN203551925U CN203551925U CN201320753860.3U CN201320753860U CN203551925U CN 203551925 U CN203551925 U CN 203551925U CN 201320753860 U CN201320753860 U CN 201320753860U CN 203551925 U CN203551925 U CN 203551925U
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- servicing unit
- potentiometer
- housing
- polarisation
- digital photographing
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Abstract
The utility model relates to an auxiliary device used in dark-field illumination digital photographing and belongs to the technical field of criminal investigation. A multi-gear switch, an LED driving circuit and a potentiometer of the auxiliary device are installed in a casing as a control circuit; a switch button and a potentiometer knob are arranged at the external side of a cover plate at the exterior of the casing and are respectively connected with the multi-gear switch and the potentiometer; a battery cabin is inwards recessed in the casing; an LED illumination light source is connected with a light condenser and is fixedly mounted inside the casing; and a reflector is mounted below the light condenser. With the auxiliary device adopted, various kinds of image features such as fingerprints and palm prints which are attached to a smooth plane can be extracted, and a target object can be photographed as a high-contrast image; images with a certain geometric height such as dust fingerprints and dust-layer palm prints which are attached to a flat surface can be photographed with extremely high contrast, and details in a crime scene can be represented in a most authentic mode. The auxiliary device is advantageous in simplicity and convenient operation.
Description
Technical field
The utility model relates to a kind of servicing unit of dark field illumination digital photographing, is mainly used in strengthening digital camera to being attached to the extraction of pattern on smooth flat or other flat surfaces, belongs to criminal investigation technical field.
Background technology
At present, in information acquisition, digital camera application is very extensive, but, image acquisition work for the special object of spot, not only need on-the-spot macrofeature to record by modes such as recording a video, take pictures, more need each material particular to preserve with high-resolution, high comparison diagram sheet mode by certain equipment, also need if desired the specific region of image to can't harm and amplify to facilitate detail analysis.
May there are various situations in the smooth flat of adhering to due to captured object or the attribute of flat surface, such as surperficial reflectance, roughness, flatness etc. there are differences in different cases; Particularly, when the image of taking dust fingerprint etc. and being attached on flat surface and having certain geometric height, the setting sun funerary objects of existing vertical reflection formula digital filming servicing unit, auxiliary digital photographing all can not adapt to various situations.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of servicing unit of dark field illumination digital photographing, auxiliary digital camera to be attached to smooth flat fingerprint, keep the seal or the extraction of multiple characteristics of image such as keep the seal of dust fingerprint, the dust of other flat surfaces, by destination object with high contrast picture shooting out, especially, the utility model can also be taken the image that dust fingerprint etc. is attached on flat surface and has certain geometric height, spot details is accomplished to reduce the most really, simultaneously, device is simple, easy to operate.
The technical solution adopted in the utility model: a kind of servicing unit of dark field illumination digital photographing, servicing unit comprises multi-gear switch 1, LED drive circuit 2, cover plate 3, potentiometer 4, housing 5, shift knob 6, potentiometer turn-knob 7, battery compartment 8, condenser 9, LED lighting source 10, reflective mirror 12; Multi-gear switch 1, LED drive circuit 2, potentiometer 4 are arranged on the inside of housing 5 as control circuit, shift knob 6, potentiometer turn-knob 7 are arranged on cover plate 3 outsides of housing 5 outsides, be connected with multi-gear switch 1, potentiometer 4 respectively, battery compartment 8 indents are in housing 5, LED lighting source 10 is connected with condenser 9, be fixedly mounted on the inside of housing 5, reflective mirror 12 is arranged on the below of condenser 9.
The housing front end of described servicing unit is provided with and is connected setting sun funerary objects 23 or manifests the bayonet socket 13 that luminaire 24 matches.
Battery compartment 8 and the housing 5 of described servicing unit are same integral body.
Described 8 li of installation rechargable power supplies of battery compartment.
Described described housing 5 outsides be provided with angle handwheel 16, by reflector bracket 11, be connected with reflective mirror 12, and can make reflector bracket 11 rotate and lock in certain angle scope around its mounting hole center.
Between described enclosure interior LED lighting source 10 and reflective mirror 12, be provided with polarizer 19 and the fixing polarisation microscope base 20 of polarizer, polarizer 19 is fixed on polarisation microscope base 20, and polarisation microscope base 20 is fixedly mounted on housing 5.
Described housing 5 outsides are provided with polarisation handwheel 15 and turnover panel handwheel 14, the two coaxial installation also can be around its mounting hole central rotation, polarisation microscope base 20 is provided with steel wire groove, steel wire 22 is connected with wire wheel 21 with polarisation microscope base 20 simultaneously, wire wheel 21 is arranged on can be around its mounting hole central rotation on polarisation support 18, and wire wheel 21 is fixedly connected with polarisation handwheel 15 and can be around its mounting hole axle center rotation.
The beneficial effects of the utility model: the auxiliary digital camera of the utility model to be attached to smooth flat fingerprint, keep the seal or the extraction of multiple characteristics of image such as keep the seal of dust fingerprint, the dust of other flat surfaces, by destination object with high contrast picture shooting out, especially, the utility model can also be taken the image that dust fingerprint etc. is attached on flat surface and has certain geometric height, spot details is done to reduction the most really, meanwhile, device is simple, easy to operate.
Accompanying drawing explanation
Fig. 1 is the installation site schematic diagram of control circuit and shift knob in this servicing unit, potentiometer knob;
Fig. 2 is battery in this servicing unit, LED lighting source and optically focused mounting structure schematic diagram;
Fig. 3 is the mounting structure schematic diagram of turnover panel handwheel in this servicing unit, polarisation handwheel, angle handwheel;
Fig. 4 is the mounting structure schematic diagram of reflective mirror, polariscope in this servicing unit;
Fig. 5 is that servicing unit is used in conjunction with connection diagram with setting sun funerary objects;
Fig. 6 is servicing unit and manifest luminaire and be used in conjunction with connection diagram;
Fig. 7 is servicing unit illumination optical schematic diagram;
In figure: 1-multi-gear switch, 2-LED driving circuit, 3-cover plate, 4-potentiometer, 5-housing, 6-shift knob, 7-potentiometer knob, 8-battery, 9-condenser, 10-LED lighting source, 11-reflector bracket, 12-reflective mirror, 13-bayonet socket, 14-turnover panel handwheel, 15-polarisation handwheel, 16-angle handwheel, 17-battery cover, 18-polarisation support, 19-polarizer, 20-polarisation microscope base, 21-wire wheel, 22-steel wire, 23-casts oblique rays on funerary objects, 24-manifests luminaire, this servicing unit of 25-.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further, to facilitate the technical staff to understand.
As shown in Figure 1, 2, 3: a kind of servicing unit of dark field illumination digital photographing, servicing unit comprises multi-gear switch 1, LED drive circuit 2, cover plate 3, potentiometer 4, housing 5, shift knob 6, potentiometer turn-knob 7, battery compartment 8, condenser 9, LED lighting source 10, reflective mirror 12; Multi-gear switch 1, LED drive circuit 2, battery 3, potentiometer 4, LED lighting source 10 are arranged on housing 5 inside as control circuit, the annexation of control circuit is: potentiometer 4 is connected between the negative pole of battery 3 and the negative input of LED drive circuit 2, the positive pole of battery 3 connects LED drive circuit 2 electrode input ends, the positive pole output of LED drive circuit 2 connects the electrode input end of LED lighting source 10, the negative pole output of LED drive circuit 2 connects the input end of multi-gear switch 1, and the output terminal of multi-gear switch 1 connects the negative input of LED lighting source 10.Potentiometer knob 7 is connected with potentiometer 4, is arranged on cover plate 3 outsides for operation; Shift knob 6 is connected with multi-gear switch 1, also be arranged on cover plate 3 outsides for operation, battery compartment 8 indents are in housing 5, be used for installing battery, as shown in Figure 2: LED lighting source 10 is connected with condenser 9, be fixedly mounted on the inside of housing 5, reflective mirror 12 is arranged on the below of condenser 9, through the ray cast of condenser 9 outgoing to after on reflective mirror 12 again horizontal reverse go out to form final lighting source.
Battery compartment 8 and the housing 5 of described servicing unit are same integral body, and described 8 li of installation rechargable power supplies of battery compartment, are convenient to recycling.
As shown in Figure 5: for this servicing unit 25 is used in conjunction with case schematic diagram with casting oblique rays on funerary objects 23, the two connects by the bayonet socket 13 being positioned on servicing unit 25.
As shown in Figure 6: for this servicing unit 25 with manifest funerary objects 24 and be used in conjunction with case schematic diagram, the two connects by the bayonet socket 13 being positioned on servicing unit 25.
As shown in Figure 3,4: the outside of described housing 5 is provided with angle handwheel 16, carry out angular adjustment operation when easy to use.Reflective mirror 12 is fixedly mounted on reflector bracket 11, and reflector bracket 11 is arranged on housing 5, is provided with roller pin and locking pivot pin on reflector bracket 11, and roller pin is connected with housing 5 and can be around its mounting hole rotation, and locking pivot pin is connected with angle handwheel.Slip angle handwheel can make reflector bracket rotate around it pivot pin rotation, makes reflective mirror angle change simultaneously; Rotating angle handwheel can unclamp or lock reflector bracket so that its angle is adjustable or to fix its angle constant.
As shown in Figure 2: between described enclosure interior LED lighting source 10 and reflective mirror 12, be provided with polarizer 19 and the fixing polarisation microscope base 20 of polarizer, polarizer 19 is fixed on polarisation microscope base 20, and polarisation microscope base 20 is fixedly mounted on housing 5.
As shown in Figure 3,4: described housing 5 outsides are provided with polarisation handwheel 15 and turnover panel handwheel 14, the two coaxial installation also can be around its mounting hole central rotation, polarisation microscope base 20 is provided with steel wire groove, steel wire 22 is connected with wire wheel 21 with polarisation microscope base 20 simultaneously, wire wheel 21 is arranged on can be around its mounting hole central rotation on polarisation support 18, wire wheel 21 is fixedly connected with polarisation handwheel 15 and can be around its mounting hole axle center rotation, and rotating polarization handwheel can make by the transmission of steel wire, polarizer to be rotated.Turnover panel handwheel 14 is arranged on housing 5 outsides and is positioned at outside polarisation handwheel 15 also concentric simultaneously, turnover panel handwheel 14 can and be fixedly connected with polarisation support 18 around its mounting hole axle center rotation, rotation turnover panel handwheel 14 can rotate polarisation support 18, polarizer 19 is screwed in or screw out illumination path simultaneously.
As shown in Figure 7: be the illumination optical schematic diagram of described servicing unit described in the utility model, the final illumination of servicing unit outgoing is incident ray, with the angular illumination that approaches level to target area, because destination object has certain geometric height, and incident ray is to irradiate on it with nearly horizontal mode, so the incident light direction (plane of illumination) of destination object is illuminated by large area, the diffuse reflection that is simultaneously obviously accompanied by light manifests generation, and destination object dorsad the one side of incident light (shady face) owing to not almost being irradiated to and presenting obvious shade by light.Under such lighting condition, even if destination object is attached on rough flat surface, also can be because its obvious light and shade contrast is imaged on its profile on camera bottom surface in high contrast mode, camera can obtain the destination object picture of high definition, equally to bringing great convenience property of detection work.
The utility model can assist digital camera to be attached to smooth flat fingerprint, keep the seal or the extraction of multiple characteristics of image such as keep the seal of dust fingerprint, the dust of other flat surfaces, by destination object with high contrast picture shooting out, spot details is done to reduction the most really, simultaneously, device is simple, easy to operate.
The utility model describes by specific implementation process, in the situation that not departing from the utility model scope, can also carry out various conversion and be equal to replacement the utility model patent, therefore, the utility model patent is not limited to disclosed specific implementation process, and should comprise the whole embodiments that fall within the scope of the utility model Patent right requirement.
Claims (7)
1. a servicing unit for dark field illumination digital photographing, servicing unit comprises multi-gear switch, LED drive circuit, cover plate, potentiometer, housing, shift knob, potentiometer turn-knob, battery compartment, condenser, LED lighting source, reflective mirror; Multi-gear switch, LED drive circuit, potentiometer are arranged on the inside of housing as control circuit, shift knob, potentiometer turn-knob are arranged on the cover plate outside of outside, be connected with multi-gear switch, potentiometer respectively, battery compartment indent is in housing, LED lighting source is connected with condenser, be fixedly mounted on the inside of housing, reflective mirror is arranged on the below of condenser.
2. the servicing unit of a kind of dark field illumination digital photographing according to claim 1 is characterized in that: the housing front end of described servicing unit is provided with and casts oblique rays on funerary objects or manifest the bayonet socket that luminaire matches.
3. the servicing unit of a kind of dark field illumination digital photographing according to claim 1, is characterized in that: described battery compartment and housing are same integral body.
4. the servicing unit of a kind of dark field illumination digital photographing according to claim 1, is characterized in that: described battery compartment is built-in with rechargable power supplies.
5. the servicing unit of a kind of dark field illumination digital photographing according to claim 1, it is characterized in that: the described described outside that is arranged on luminaire is provided with angle handwheel, by reflector bracket, be connected with reflective mirror, and can make reflector bracket rotate and lock in certain angle scope around its mounting hole center.
6. the servicing unit of a kind of dark field illumination digital photographing according to claim 1, it is characterized in that: between described enclosure interior LED lighting source and reflective mirror, be provided with polarizer and the fixing polarisation microscope base of polarizer, polarizer is fixed on polarisation microscope base, and polarisation microscope base is fixedly mounted on housing.
7. the servicing unit of a kind of dark field illumination digital photographing according to claim 1, it is characterized in that: described outside is provided with polarisation handwheel and turnover panel handwheel, the two is coaxially installed on and can be around its mounting hole central rotation, polarisation microscope base is provided with steel wire groove, steel wire is connected with wire wheel with polarisation microscope base simultaneously, wire wheel is arranged on can be around its mounting hole central rotation on polarisation support, and wire wheel is fixedly connected with polarisation handwheel and can be around its mounting hole axle center rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320753860.3U CN203551925U (en) | 2013-11-26 | 2013-11-26 | Auxiliary device used in dark-field illumination digital photographing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320753860.3U CN203551925U (en) | 2013-11-26 | 2013-11-26 | Auxiliary device used in dark-field illumination digital photographing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203551925U true CN203551925U (en) | 2014-04-16 |
Family
ID=50470017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320753860.3U Expired - Fee Related CN203551925U (en) | 2013-11-26 | 2013-11-26 | Auxiliary device used in dark-field illumination digital photographing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203551925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111598057A (en) * | 2020-06-24 | 2020-08-28 | 无锡市科德科技有限公司 | Bright field and dark field directional reflection light source assembly based on combined light source |
-
2013
- 2013-11-26 CN CN201320753860.3U patent/CN203551925U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111598057A (en) * | 2020-06-24 | 2020-08-28 | 无锡市科德科技有限公司 | Bright field and dark field directional reflection light source assembly based on combined light source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20211126 |