CN105044899A - Night vision device based on low light level imaging and implementation method thereof - Google Patents
Night vision device based on low light level imaging and implementation method thereof Download PDFInfo
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Abstract
The invention discloses a night vision device based on low light level imaging and an implementation method thereof. The night vision device includes: a head strap, a super light sensitive imaging detection module, a small F-number imaging mirror set, a video reading out module, an image processing module and a pair of virtual imaging spectacles. The implementation method includes the following steps: a light intensity detection unit detecting a natural light intensity within a detection area; the super light sensitive imaging detection module, based on the real-time natural light intensity, automatically adjusting the time length of optical exposure and the F-number, and collecting the form and color of an object article within the detection area; the video reading out module converting an optical image into a digital image signal and transmitting the digital image signal to the image processing module; the image processing module receiving the digital image signal transmitted by the video reading out module, and subjecting the digital image signal to filtering and imaging processing, and passing a high quality image signal to the pair of virtual imaging spectacles; the pair of virtual imaging spectacles directly projecting the real-time image to the eyes of a user in a semi-transparent manner. The embodiments of the invention can conduct color imaging under light-free environment, and are easy and practical.
Description
Technical field
The present invention relates to imaging detection technical field, particularly a kind of night vision device based on low-light level imaging and its implementation.
Background technology
The utilization of existing low-light level imaging technology, substantially on main equipment, when micro light detecting imaging, all needs to dock with display, and its equipment volume is comparatively large, and need manual operation, portable capability is poor, is not suitable for outdoor activities or is not easy to the field of operation.
Current low-light level imaging technology is also applied on night vision device, existing low-light level night vision device is the low-light level natural light utilizing target reflection at night, strengthened and be amplified to hundreds of thousands doubly, thus reach be suitable for that naked eyes to carry out scouting, observe, aim at night, vehicle drive and other battlefield operation.
Low-light level night vision device is made according to photoelectric physics principle, photon is beaten on a metal plate after entering night vision device, produce photoelectron, these electronics are again by being placed in the thin disc before optical screen, disc there are millions of microchannels, electronics realizes electron multiplication after entering microchannel, imaging.
This low-light level night vision device can not gather the coloured image of dim environment, simultaneously under the environment that light luminance is extremely low, cannot blur-free imaging, and under no light conditions, cannot use completely especially.
Number of patent application: 201010161522.1 disclose a kind of direct-view low-light-level stereoscopic imaging night-vision device, this invention comprises objective lens optical system, photocathode, microchannel plate, there is fluorescent panel and eyepiece system that 180 ° are turned round picture characteristic, the front end of objective lens optical system is provided with record zoom lens array, form the various visual angles imaging system structure of double-zoom lens array composition, fluorescent panel is placed in the focal plane position place of reconstruct zoom microlens array, and in each corresponding lens unit spatial dimension of reconstruct zoom lens array, to realize the reversible correction of the low-light stereo-picture degree of depth.This invention mainly utilizes traditional low-light level imaging method, optical signalling is utilized to be transformed into electric signal, light signal is transformed into again by electric signal, correction image is carried out by various visual angles imaging, the method cannot solve the root problem of imaging under the low environment of nature auroral poles, just from the angle of image correction, differ greatly with telegraphy photoimaging Detection Techniques of the present invention and near infrared illuminating imager technology.
Number of patent application: 201310170449.8 disclose a kind of hologram diffraction formula low-light level night vision device resolving power inspection method and device, this invention comprises target plate as generation system and power supply and control system, its workflow is, man-machine interaction unit sends instruction to single-chip microcomputer, single-chip microcomputer exports pwm pulse according to instruction, export the luminous power of predetermined calibration value by power stability unit controls semiconductor laser and keep stable, light beam collimation is corrected, shine reflecting diffraction grating and carry out parallax elimination, then be irradiated on holographic dry plate with the incident angle identical with reference light during recording holographic dry plate, the front infinite point reproducing of holographic dry plate is differentiated the target plate virtual image, for user, low-light level night vision device resolving power is checked.This invention mainly utilizes laser hologram reproducing principle, adopt the thinking of folded optical path, differ greatly with extreme infrared illuminating imager technology of the present invention and semi-transparent virtual projection imaging technique, laser wherein described in documents throws light on to its dim environment, this method is as easy as rolling off a log to be found by military detection system, holography described in documents is completely different from the virtual image the technology directly virtual image projected in the middle of human eye in existing image-forming principle, therefore, the technical characteristic of two inventions is different, the technical matters solved is also different, can not mention in the same breath.
Summary of the invention
Based on this, for the problems referred to above, be necessary to propose a kind of night vision device based on low-light level imaging and its implementation, solve tradition and cannot realize the unglazed or intensity of illumination problem lower than the atomic luminous environment imaging of 0.005Lux, solve the problem that tradition cannot realize colour imaging, solving tradition needs manual operation to adjust the problem of search coverage and zoom system, pancreatic system, solve conditional electronic and be released in the unsharp problem of human eye observation's video screen on video screen, solution tradition cannot realize human eye and observe the video pictures of low-light level imaging and the problem of near region true environment simultaneously.
Technical scheme of the present invention is: a kind of night vision device based on low-light level imaging, it comprises
There is wearing effect, and whole equipment can be driven along with the swing of user's head to regulate the head hoop pointing to region;
Be located on head hoop, have and gather the form of target object and the telegraphy photoimaging detecting module of color under dim environment;
For promoting the little F number imaging lens group of low-light level imaging ability;
Video for optical image being converted to data image signal reads module;
Receiver, video reads the data image signal of module transfer, and carries out filtering to data image signal and strengthen the image processing module of process;
Receive the data image signal of image processing module transmission, and with semi-transparent mode projection imaging to the virtual image glasses on human eye.
This invention adopts the high sensitivity telegraphy photoimaging detecting module of more than starlight level, possess the colored detectivity under dim environment, simultaneously with human eye sightless near infrared DL laser to the floor light of no light conditions, realize blur-free imaging to no light conditions, and avoid the drawback that traditional visible illumination easily causes enemy personnel to note.
Telegraphy photoimaging detecting module and Wearable combine by this invention, in detection process, are arranged on user's head by head hoop, form wear-type probe, along with the swing of head, can change the position of detection.
Preferably, described telegraphy photoimaging detecting module is provided with the near infrared DL laser projection system for no light conditions floor light.
Preferably, telegraphy photoimaging detecting module is also provided with the regulating device for modulated laser output power.
Preferably, described telegraphy photoimaging detecting module is also provided with the light-intensity test unit detecting natural lighting intensity.
Preferably, it also comprises the portable power source each module of equipment being provided to electric energy.
Preferably, described portable power source is provided with for being hang over buckling on waistband.
In general, the weight of portable power source is bigger than normal, is not suitable for being worn on the head, and therefore, portable power source and detecting devices are separated, adopt waistband frenulum portable power source, be deployed in loins, it is reasonable in design, easy to use.
Preferably, the F numerical range of described little F number imaging lens group is F<1, promotes the imaging capability of detector.
Based on an implementation method for the night vision device of low-light level imaging, comprise the following steps:
The natural lighting intensity of a, light-intensity test unit inspection search coverage;
B, telegraphy photoimaging detecting module, according to real-time natural lighting intensity, automatically regulate optical exposure duration and f-number, gather form and the color of target object under search coverage;
C, video read module and optical image are converted to data image signal and are transferred to image processing module;
D, image processing module receiver, video read the data image signal of module transfer, after filtering and image enhancement processing, by qualitative picture signal transmission to virtual image glasses;
Realtime graphic, by semi-transparent mode, directly projects in user's naked eyes by e, virtual image glasses.
This invention can realize carrying out colour imaging to the target under 0.005Lux illumination environment, the observation area paid close attention to is pointed to by the head oscillation of user, and by virtual image, detection video is directly projected in user's eye, in use without the need to manual operation, the both hands of abundant liberation operator, utilize telegraphy photoimaging Detection Techniques, near infrared illuminating imager technology and virtual image technology, improve the performance of low-light level night vision device.
Preferably, during no light conditions, open near infrared DL laser projection system and carry out floor light, this near infrared DL laser projection system can be avoided by human eye observation and sensed recognition of devices, be applicable to night monitoring, unmanned plane night reconnaissance and take photo by plane, helicopter night reconnaissance and the backup system of taking photo by plane and land, donkey friend nocturnalism equipment, individual combat Night vision helmet, boats and ships Vehicular night vision system, security protection are speedily carried out rescue work etc. carries on construction work at night and the night vision system of field of operation.
The invention has the beneficial effects as follows:
(1) overturn traditional low-light level imaging equipment, possess the distortionless function of high-resolution colour imaging under unglazed or atomic luminous environment;
(2) image taking speed is fast, can use by round-the-clock, full territorial environment, and avoid the defect that traditional low-light level imaging equipment cannot use on the daytime that intensity of illumination is high, gain is high, in bright gay color, easy to use;
(3) user need not do identification training, and automatic focusing is focused, automatic auxiliary lighting function, the both hands of liberation user, and property easy to use is high;
(4) utilize near infrared DL laser system to realize floor light, can avoid by detection equipment identification;
(5) graphics process speed is fast, and heavy exposure eradicating efficacy is good, and the image frame resolution after conversion is high, and utilizes New Virtual imaging technique, is conducive to avoiding conventional fluorescent screen display to show the shortcoming of the rear picture effect difference of conversion;
(6) utilize semi-transparent virtual projection, the virtual screen after making user not only can observe imaging, also directly observes true environment nearby by human eye;
(7) lightweight, volume is little, is provided with the portable power source fixing with waistband, be easy to carry and use for a long time;
(8) be applicable to night monitoring, unmanned plane night reconnaissance and take photo by plane, detecting at helicopter night and the backup system of taking photo by plane, donkey friend nocturnalism equipment, individual combat night observation device, shipping vehicle night vision system, security protection are speedily carried out rescue work, post monitors and the using and promoting of the fields such as operation that carry on construction work at night.
Accompanying drawing explanation
Fig. 1 is the night vision device structural representation based on low-light level imaging described in the embodiment of the present invention;
In figure, 10-little F number imaging lens group, 20-telegraphy photoimaging detecting module, 30-video reads module, 40-head hoop, 50-image processing module, 60-virtual image glasses, 70-near infrared DL laser projection system.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
Embodiment 1:
Based on a night vision device for low-light level imaging, as shown in Figure 1, it comprises
There is wearing effect, and whole equipment can be driven along with the swing of user's head to regulate the head hoop 40 pointing to region;
Be located on head hoop 40, have and gather the form of target object and the telegraphy photoimaging detecting module 20 of color under dim environment;
For promoting the little F number imaging lens group 10 of low-light level imaging ability;
Video for optical image being converted to data image signal reads module 30
Receiver, video reads the data image signal that module 30 is transmitted, and carries out filtering to data image signal and strengthen the image processing module 50 of process;
Receive the data image signal that image processing module 50 transmits, and with semi-transparent mode projection imaging to the virtual image glasses 60 on human eye.
This invention adopts the high sensitivity telegraphy photoimaging detecting module 20 of more than starlight level, possesses the colored detectivity under dim environment.
Telegraphy photoimaging detecting module 20 and Wearable combine by this invention, in detection process, are arranged on user's head by head hoop 40, form wear-type probe, along with the swing of head, can change the position of detection.
Embodiment 2:
Based on an implementation method for the night vision device of low-light level imaging, comprise the following steps:
The natural lighting intensity of step one, light-intensity test unit inspection search coverage;
Step 2, telegraphy photoimaging detecting module 20, according to real-time natural lighting intensity, automatically regulate optical exposure duration and f-number, gather form and the color of target object under search coverage;
Step 3, video read module 30 and optical image are converted to data image signal and are transferred to image processing module 50;
Step 4, image processing module 50 receiver, video read the data image signal that module 30 is transmitted, after filtering and image enhancement processing, by qualitative picture signal transmission to virtual image glasses 60;
Realtime graphic, by semi-transparent mode, directly projects in user's naked eyes by step 5, virtual image glasses 60.
This invention can realize carrying out colour imaging to the target under 0.005Lux illumination environment, the observation area paid close attention to is pointed to by the head oscillation of user, and by virtual image, detection video is directly projected in user's eye, in use without the need to manual operation, the fully both hands of liberation operator.
Embodiment 3:
The difference of the present embodiment and embodiment 1 is, during no light conditions, open near infrared DL laser projection system 70 and carry out floor light, this near infrared DL laser projection system 70 can be avoided by human eye observation and sensed recognition of devices, be applicable to night monitoring, unmanned plane night reconnaissance and take photo by plane, helicopter night reconnaissance and the backup system of taking photo by plane and land, donkey friend nocturnalism equipment, individual combat Night vision helmet, boats and ships Vehicular night vision system, security protection are speedily carried out rescue work etc. carries on construction work at night and the night vision system of field of operation.
Embodiment 4:
The difference of the present embodiment and other embodiments is, the F numerical range of described little F number imaging lens group 10 is F<1, the F value of imaging lens group is the key affecting dim environment imaging, and this design can realize carrying out colour imaging to the target under 0.005Lux illumination environment.
The above embodiment only have expressed the specific embodiment of the present invention; it describes comparatively concrete and detailed; but therefore can not be interpreted as the restriction to the scope of the claims of the present invention; it should be noted that; for the person of ordinary skill of the art; without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (9)
1. based on a night vision device for low-light level imaging, it is characterized in that, it comprises
There is wearing effect, and whole equipment can be driven along with the swing of user's head to regulate the head hoop pointing to region;
Be located on head hoop, have and gather the form of target object and the telegraphy photoimaging detecting module of color under dim environment;
For promoting the little F number imaging lens group of low-light level imaging ability;
Video for optical image being converted to data image signal reads module;
Receiver, video reads the data image signal of module transfer, and carries out filtering to data image signal and strengthen the image processing module of process;
Receive the data image signal of image processing module transmission, and with semi-transparent mode projection imaging to the virtual image glasses on human eye.
2. a kind of night vision device based on low-light level imaging according to claim 1, it is characterized in that, described telegraphy photoimaging detecting module is provided with the near infrared DL laser projection system for no light conditions floor light.
3. a kind of night vision device based on low-light level imaging according to claim 1 or 2, is characterized in that, telegraphy photoimaging detecting module is also provided with the regulating device for modulating laser illuminator output power.
4. a kind of night vision device based on low-light level imaging according to claim 1, is characterized in that, described telegraphy photoimaging detecting module is also provided with the light-intensity test unit detecting natural lighting intensity.
5. a kind of night vision device based on low-light level imaging according to claim 1, it is characterized in that, it also comprises the portable power source each module of equipment being provided to electric energy.
6. a kind of night vision device based on low-light level imaging according to claim 1 or 5, is characterized in that, described portable power source is provided with for being hang over buckling on waistband.
7. a kind of night vision device based on low-light level imaging according to claim 1, it is characterized in that, the F numerical range of described little F number imaging lens group is F<1.
8. based on an implementation method for the night vision device of low-light level imaging, it is characterized in that, comprise the following steps:
The natural lighting intensity of a, light-intensity test unit inspection search coverage;
B, telegraphy photoimaging detecting module, according to real-time natural lighting intensity, automatically regulate optical exposure duration and f-number, gather form and the color of target object under search coverage;
C, video read module and optical image are converted to data image signal and are transferred to image processing module;
D, image processing module receiver, video read the data image signal of module transfer, after filtering and image enhancement processing, by qualitative picture signal transmission to virtual image glasses;
Realtime graphic, by semi-transparent mode, directly projects in user's naked eyes by e, virtual image glasses.
9. the implementation method of a kind of night vision device based on low-light level imaging according to claim 8, is characterized in that, during no light conditions, opens near infrared DL laser projection system and carries out floor light.
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| CN108702459A (en) * | 2017-05-18 | 2018-10-23 | 深圳市大疆创新科技有限公司 | A kind of automatic explosion method and device for camera |
| CN111225186A (en) * | 2020-01-15 | 2020-06-02 | 深圳市天智汽车电子技术有限公司 | Full-color night vision display method and night vision device for driving safety auxiliary driving |
| CN111610002A (en) * | 2020-05-27 | 2020-09-01 | 北方夜视技术股份有限公司 | Method for measuring cathode close-proximity distance of image intensifier |
| CN114758249A (en) * | 2022-06-14 | 2022-07-15 | 深圳市优威视讯科技股份有限公司 | Target object monitoring method, device, equipment and medium based on field night environment |
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