CN101540838A - Ultraviolet digital camera - Google Patents
Ultraviolet digital camera Download PDFInfo
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- CN101540838A CN101540838A CN200910038982A CN200910038982A CN101540838A CN 101540838 A CN101540838 A CN 101540838A CN 200910038982 A CN200910038982 A CN 200910038982A CN 200910038982 A CN200910038982 A CN 200910038982A CN 101540838 A CN101540838 A CN 101540838A
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Abstract
The invention relates to an ultraviolet digital camera which comprises an ultraviolet imaging object lens, a fixed connecting ring, an ultraviolet interference absorber, an ultraviolet image intensifier, an optical fiber image coupler, a CCD or CMOS image sensor, a digital image data processing circuit, a memory, a display screen and a shell, wherein the ultraviolet imaging object lens is connected with the ultraviolet interference absorber by the fixed connecting ring, and the ultraviolet interference absorber and the ultraviolet image intensifier are connected and combined together; the ultraviolet image intensifier is in coupling connection with the CCD or CMOS image sensor by the optical fiber image coupler, and output signals of the CCD or CMOS image sensor are processed by the digital image data processing circuit and input into the display screen and the memory. The camera is convenient to carry and operate, can work in a solar blind ultraviolet spectrum section, has the advantages of high sensitivity and resolution and can satisfy the requirements for extracting and analyzing ultraviolet images.
Description
Technical field
The present invention relates to a kind of extraction that is mainly used in remaining traces such as residual fingerprint, palmmprint, cut, the power transmission and transformation system corona discharge detects and fire alarm is monitored and the portable ultraviolet image numeral of the shooting of other ultraviolet image signals and analysis is taken pictures, camera head.
Background technology
The ultraviolet image numeral is taken pictures, camera head collection to remaining traces such as residual fingerprint, palmmprint, cuts in police criminal detection is extracted, shooting and analysis to corona discharge detection and fire alarm monitoring and other ultraviolet image signals thereof in power transmission and transformation system all have extensive use, but at present the ultraviolet image numeral used of these fields take pictures, camera head, the ubiquity complex structure, heaviness, operation easier is big, uses inconvenient, job insecurity, ineffective shortcoming.For example the disclosed a kind of ultraviolet image scope that is used to manifest vestiges such as residual fingerprint, palmmprint, sweat mark, bloodstain of CN2610846 owing to structural reason, just still exists and uses inconvenience, ineffective shortcoming.The existing power transmission and transformation system that is used for costs an arm and a leg to the then most complex structure of ultraviolet camera head that corona discharge detects.
Summary of the invention
The objective of the invention is to design a kind of being easy to carry, can be operated in high sensitivity, the high-resolution ultraviolet digital camera of day blind ultraviolet spectral coverage, to satisfy the needs that ultraviolet image extracts and analyzes with easy to operate.
The present invention is by the following technical solutions: the structure of designed ultraviolet digital camera, include: the ultraviolet imagery object lens, fixing T-Ring, UV interference filters, ultraviolet imaging enhancer, optical taper volume image coupler, CCD or cmos image sensor, the DID treatment circuit, memory, display screen and casing, described ultraviolet imagery object lens are connected with fixing T-Ring by bayonet arrangement, fixedly T-Ring is connected with UV interference filters, UV interference filters is connected with ultraviolet imaging enhancer and combines, ultraviolet imaging enhancer is of coupled connections by optical taper volume image coupler and CCD or cmos image sensor, the output signal of CCD or cmos image sensor is divided two-way output after the DID processing circuit processes, one road input panel shows, another road input store storage.
This ultraviolet digital camera adopts conventional shutter control apparatus and power source drive device.
Operation principle of the present invention is as shown in Figure 1: the ultraviolet image of target is imaged on the input face (photocathode) of ultraviolet imaging enhancer by the ultraviolet imagery object lens through UV interference filters, this ultraviolet image changed by ultraviolet imaging enhancer and strengthen after become brightness and satisfy the visible images output that follow-up camera system (CCD or cmos image sensor) requires, the effect of camera system is to convert optical image signal to the electricity digital signal, and this signal is difference input panel and real-time demonstration of memory do and record after digital processing circuit is handled.During work, on the input cathode plane that is imaged on ultraviolet imaging enhancer of ultraviolet imagery camera lens with target, if target is ultraviolet self-luminous body (as corona discharge, flame, a plasma discharge etc.), do not need light source during camera work, otherwise just must be to the target ultraviolet source irradiation.
In this ultraviolet digital camera, said ultraviolet imagery object lens use standard ultraviolet camera lens, adopt bayonet arrangement and fixedly T-Ring connection, and fixedly T-Ring is connected with casing with screw thread; Fixedly the function one of T-Ring is to regulate the position of lens imaging face as required by the T-Ring of transposing different length, the 2nd, be used for fixing ultraviolet imaging enhancer, and avoid it to move axially; The effect one of said UV interference filters is the light of other spectral coverage beyond the filtering UV signal light, improves the signal to noise ratio of output signal, the 2nd, and image intensifier damages when preventing strong bias light input; The effect of said ultraviolet imaging enhancer is that ultraviolet light (invisible) image is transformed into visible images.The input window of UV interference filters and ultraviolet imaging enhancer fits and is combined into one.The output image of ultraviolet imaging enhancer is coupled to CCD or cmos image sensor by optical taper volume image coupler, all use the refractive index match couplant to be close to gummed between the input end face of the output face of ultraviolet imaging enhancer and optical taper volume image coupler and between the output end face of optical taper volume image coupler and CCD or the cmos image sensor, adopt such structure, realized outputing to the image transmission of shooting sensing target surface from booster, improved 1-1.5 the order of magnitude with the light energy coupling efficiency of optical coupled mode ratioing signal, simplified the structure simultaneously, reliability and vibration resistance have been improved, device volume and weight have been reduced.
This ultraviolet digital camera can be operated in 200～300nm wave band (day blind ultraviolet band), battery-powered, commercial power interface is provided simultaneously, adopt conventional shutter control apparatus and power source drive device, and can provide following conventional supporting technology: the menu mode operation interface comprises resolution setting, style of shooting setting, the setting of picture specification and Exposure mode setting etc.; The two kinds of mode of operations of taking pictures and make a video recording are by operation keys with interface fit is set carries out; Image is shown in real time by LCD, and playback function is arranged; Storage adopts semiconductor storage medium.
This ultraviolet digital camera simple and reasonable, volume is little, in light weight, have simple to operate, advantages such as the high record of resolution data volume is big, and exchanges data is convenient, fast can satisfy the application requirements such as detection, shooting and record of ultraviolet image signal, can be used for the extraction of remaining traces such as residual fingerprint, palmmprint, cut, the power transmission and transformation system corona discharge detects and fire alarm is monitored and the shooting and the analysis of other ultraviolet image signals.Patrol and examine with fields such as fault detect, biomedical researches at police criminal detection, fire monitoring and early warning, power transmission and transformation system and to be widely used.
Description of drawings
Fig. 1 is the structural representation of this ultraviolet digital camera;
Fig. 2 is the fundamental diagram of this ultraviolet digital camera;
Fig. 3 is the back appearance structure chart of this ultraviolet digital camera;
Fig. 4 is the appearance assumption diagram of overlooking of this ultraviolet digital camera;
Fig. 5 shows sweat fingerprint image on the timber that this ultraviolet digital camera photographs;
Fig. 6 shows the sweat fingerprint image on the paper that this ultraviolet digital camera photographs;
Fig. 7 shows sweat fingerprint image on the common wall that this ultraviolet digital camera photographs;
Fig. 8 shows sweat fingerprint image on the polybag that this ultraviolet digital camera photographs.
Embodiment
Be described in further detail below in conjunction with the CONSTRUCTED SPECIFICATION of accompanying drawing the embodiment of the invention:
The composition structure of this ultraviolet digital camera embodiment as shown in Figure 1, this camera includes ultraviolet imagery object lens 1, fixedly T-Ring 2, UV interference filters 3, ultraviolet imaging enhancer 4, optical taper volume image coupler 5, ccd image sensor 6, memory (SD card) 7, DID treatment circuit 8, display screen 9 and casing 10.Ultraviolet imagery object lens 1 are connected with fixing T-Ring 2 by bayonet arrangement, fixedly T-Ring 2 is connected with casing 10 by screw thread, fixedly connect UV interference filters 3 after the T-Ring 2, the input window of UV interference filters 3 and ultraviolet imaging enhancer 4 fits and is combined into one, ultraviolet imaging enhancer 4 is of coupled connections by optical taper volume image coupler 5 and ccd image sensor 6, the output signal of ccd image sensor 6 is divided two-way output after DID treatment circuit 8 is handled, one road input panel 9 shows, another road input store (SD card) 7 storages.The operation principle of this camera following (as shown in Figure 2): on the input cathode plane that is imaged on ultraviolet imaging enhancer 4 of ultraviolet imagery object lens 1 with target A, if target A is ultraviolet self-luminous body (as corona discharge, flame, a plasma discharge etc.), do not need light source B during camera work, otherwise just must shine with ultraviolet source B target; Ultraviolet imaging enhancer 4 (power supply 11 by ultraviolet imaging enhancer drives) converts ultraviolet image to visible images output, and make light energy output obtain the enhancing of several magnitude, improved the detectivity of device effectively, the input of ccd image sensor 6 transferred to the output image high efficiency of ultraviolet imaging enhancer 4 by optical taper volume image coupler 5, this compares light energy coupling efficiency and has improved 1-1.5 the order of magnitude with the optical coupled mode, and simplified structure, camera debugging and occupation mode, ccd image sensor 6 becomes the sequential signal of telecommunication with the two-dimensional visible light image transform that DID treatment circuit 8 is exported ultraviolet imaging enhancer, and pass through the A/D change-over circuit analog signal digital, carry out relevant treatment and deliver to memory (SD card) 7 record and display 10 carries out the realtime graphic demonstration, and can be to the image playback at any time of having taken.
This camera is provided with mains switch 18 and shutter control button 17 (as shown in Figure 4), and shutter control apparatus and power source drive device are conventional equipment; Be provided with menu setting button 12, relay indicating light 13, LCDs 9 and guiding button 15 (as shown in Figure 3) at the back side of this camera.With the working method that interface menu is equipped with, comprise image acquisition modality, image resolution ratio, time for exposure, image display pattern, signal storage setting, data output/input control, data deletion being set or preserving being provided with etc.
Fig. 5-8 show respectively with this camera actual photographed to timber on the image of sweat fingerprint on sweat fingerprint and the polybag on the sweat fingerprint, common wall on the sweat fingerprint, paper.
The technical indicator that this camera reaches is as follows:
Response spectrum 200nm---320nm;
Effective pixel 5,000,000;
Image size 2560 * 1920;
Electronic shutter standard (1/90 second), clear (1/30 second), super clear (2 seconds);
Photosensitivity 100/200 (being equal to ISO);
Storage medium SD storage card;
Show 3.5 inches LED displays;
Video output NTSC/PAL;
Other USB2.0 interfaces, has the instant playback function.
Claims (2)
1. ultraviolet digital camera, it is characterized in that including: the ultraviolet imagery object lens, fixing T-Ring, UV interference filters, ultraviolet imaging enhancer, optical taper volume image coupler, CCD or cmos image sensor, the DID treatment circuit, memory, display screen and casing, described ultraviolet imagery object lens are connected with fixing T-Ring by bayonet arrangement, fixedly T-Ring is connected with UV interference filters, UV interference filters is connected with ultraviolet imaging enhancer and combines, ultraviolet imaging enhancer is of coupled connections by optical taper volume image coupler and CCD or cmos image sensor, the output signal of CCD or cmos image sensor is divided two-way output after the DID processing circuit processes, one road input panel shows, another road input store storage.
2, ultraviolet digital camera according to claim 1 is characterized in that all using the refractive index match couplant to be close to gummed between the input end face of the output face of described ultraviolet imaging enhancer and optical taper volume image coupler and between the output end face of optical taper volume image coupler and CCD or the cmos image sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910038982A CN101540838A (en) | 2009-04-24 | 2009-04-24 | Ultraviolet digital camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910038982A CN101540838A (en) | 2009-04-24 | 2009-04-24 | Ultraviolet digital camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101540838A true CN101540838A (en) | 2009-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910038982A Pending CN101540838A (en) | 2009-04-24 | 2009-04-24 | Ultraviolet digital camera |
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| Country | Link |
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| CN (1) | CN101540838A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866332A (en) * | 2012-09-26 | 2013-01-09 | 上海市电力公司 | On-line corona discharge detection system for cable terminal |
| CN103888640A (en) * | 2012-12-21 | 2014-06-25 | 上海良相智能化工程有限公司 | Full spectrum digital camera for criminal investigation |
| CN104866845A (en) * | 2015-06-11 | 2015-08-26 | 武汉华炬光电有限公司 | Ultraviolet infrared LED fingerprint detection system |
| CN110632613A (en) * | 2019-08-19 | 2019-12-31 | 中国科学院西安光学精密机械研究所 | Ultraviolet band-based target identification device and method in explosion scene |
-
2009
- 2009-04-24 CN CN200910038982A patent/CN101540838A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866332A (en) * | 2012-09-26 | 2013-01-09 | 上海市电力公司 | On-line corona discharge detection system for cable terminal |
| CN103888640A (en) * | 2012-12-21 | 2014-06-25 | 上海良相智能化工程有限公司 | Full spectrum digital camera for criminal investigation |
| CN104866845A (en) * | 2015-06-11 | 2015-08-26 | 武汉华炬光电有限公司 | Ultraviolet infrared LED fingerprint detection system |
| CN110632613A (en) * | 2019-08-19 | 2019-12-31 | 中国科学院西安光学精密机械研究所 | Ultraviolet band-based target identification device and method in explosion scene |
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Open date: 20090923 |