CN204077513U - Vehicle-mounted laser assistant images acquisition device - Google Patents
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- CN204077513U CN204077513U CN201420575529.1U CN201420575529U CN204077513U CN 204077513 U CN204077513 U CN 204077513U CN 201420575529 U CN201420575529 U CN 201420575529U CN 204077513 U CN204077513 U CN 204077513U
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Abstract
A kind of vehicle-mounted laser assistant images device, comprises semiconductor laser, laser heat-sink unit, laser shaping camera lens, image pick-up device, pick-up lens, optical maser wavelength gating unit, ECU (Electrical Control Unit) and shell.Semiconductor laser wherein can be vertical-cavity-face emitting semiconductor laser array or a fiber coupled laser diode; Laser shaping camera lens is positioned on laser bright dipping optical axis direction; The focal length of laser shaping camera lens and the distance variable of distance lasing fluorescence point, for changing the rising angle of laser, optical maser wavelength gating unit is a spike interference filter being placed on before image pick-up device, laser can be allowed to pass through and filter out the light outside optical maser wavelength.When this utility model can effectively suppress vehicle to cross, the high light of the car headlight of opposite vehicle, after installing optical polarizator additional, when also effectively can suppress the vehicle meeting that laser night-vision device is housed, laser is to the mutual interference of image pick-up device each other, avoids causing image pick-up device luminance saturation.
Description
Technical field
The utility model relates to a kind of vehicle-mounted laser assistant images acquisition device, belongs to laser active illumination and night vision technology field.
Background technology
Universal along with automobile, traffic accident also linearly ascendant trend.It is reported, the traffic accident of more than 60% occurs in night.Because night, the visual capabilities of driver declined, and more serious problem is, the headlight of head-on sailing next automobile dazzling can make driver dazzle the eyes, and adds the occurrence probability of traffic accident.Vehicle-mounted laser night vision system can help driver to navigate in the dark, makes driver have in light and unglazed situation and can see surface conditions clearly.And can produce and naturally observe the same image with human eye, for motion and not mobile can produce good image, the impact of head-on auto bulb and road surface light can not be subject to.Thus effectively reduce the incidence of traffic accident at night.
From 2000, the companies such as Cadillac, benz, BMW started the night running problem paying close attention to automobile, exploitation on-vehicle night vision instrument.Cadillac and Bayerische Motorne Werke Aktiengeellschaft adopt infrared thermography (induction wavelength 8 ~ 14um), as on-vehicle night vision instrument, infrared thermal imaging are more responsive to the heat source thermo such as people, animal, but the cold not mobile image contrast such as road markings is poor.Existing thermal imaging video resolution is lower, and price is higher, is unfavorable for popularizing.2012, BYD car company developed Vehicular night vision system, and use near-infrared LED to carry out light filling illumination at night, night visual range is near, camera headstock position mounted externally.
Guo enters the utility model [night vision device for driving car] of application, application number 200920176274.0.Describe a kind of night vision device for driving car, feature comprises: a video capturing device, comprises a camera lens and an image pick-up device, is furnished with laser illuminator.Hidden driving at all kinds of night or normally auxiliary driving at night can be applied to.This utility model shortcoming is without high light inhibit feature.
The patent of invention [adopting the vehicle auxiliary night viewing system of infrared semiconductor laser light source] of Semiconductor institute, Chinese Academy of Sciences's application, application number 200710304208.2, this invention comprises main light source and two light filling LASER Light Sources, with a lenticule and secondary plano-convex lens collimation, angle, at 25 ° ~ 40 °, mutually switches or opens simultaneously.Adopt high light inhibition filter to be used for high light to suppress.The shortcoming of this patent adopts edge-emission semiconductor laser light source, and LASER Light Source need carry out secondary reshaping collimation, and laser adopts multiple light courcess, is unfavorable for installing.
In sum, prior art Shortcomings and area for improvement.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of vehicle-mounted laser assistant images acquisition device of compact, effective night visual range more than 100 meters under no light conditions, the high light that can realize car headlight suppresses, intense laser interfere between laser when also can realize the automobile meeting installing laser night-vision device equally.Laser illuminator structure is simple, and LASER Light Source does not need to carry out repeatedly shaping collimation, does not need special homogenizer.Effective saving space, and the energy consumption reducing laser generation.
The technical solution of the utility model is as follows:
A kind of vehicle-mounted laser assistant images acquisition device, it is characterized in that: comprise shell, and be encapsulated in shell: semiconductor laser, laser heat-sink unit, laser shaping camera lens, image pick-up device, pick-up lens, optical maser wavelength gating unit and ECU (Electrical Control Unit);
Described semiconductor laser can be a vertical cavity surface emitting laser arrays or a fiber coupled laser diode; ,
Laser heat-sink unit for semiconductor laser heat radiation is the metal heat-dissipation block of copper or aluminum alloy material, also can use existing housing;
Described laser shaping camera lens is positioned on laser bright dipping optical axis direction; The focal length of described laser shaping camera lens and and laser luminous point between distance variable, for changing the rising angle of laser, make it to mate with the field of view angle of pick-up lens;
Described optical maser wavelength gating unit is the narrow band pass filter be placed on before image pick-up device, between image pick-up device and one of them optical window, laser can be allowed to pass through, filter out light outside optical maser wavelength, effectively prevents the high light of opposite running automobile car light from affecting.
Described ECU (Electrical Control Unit) and image pick-up device, laser carry out electrically connecting and for controlling pick up camera, laser Push And Release.
Further, described laser shaping camera lens, is positive lens (group), can be simple lens, can be balsaming lens, also can be the positive lens groups of poly-lens composition.
Further, described laser shaping camera lens surface is coated with optical maser wavelength anti-reflection film.
Further, described image pick-up device pixel count is more than 400,000, and can be simulation image pick-up device, also can be digital high-definition image pick-up device, and energy significant response optical maser wavelength, exports black-and-white video signal, more than frame frequency 25HZ.
Further, described image pick-up device camera lens can be tight shot, also can be that zoom lens is as focusing use.
Further, described optical maser wavelength gating unit also comprises and is arranged on the laser shaping camera lens optical polarizator identical or close with the direction of polarization before pick-up lens respectively, palarizer only allows the polarized light of a certain direction of polarization to pass through, and the direction of vibration of this polarizer transmission light and horizontal direction angle are 45 ° ± 10 °.When effectively can suppress meeting, the laser of the automobile mounted night vision device of opposite direction, prevents the laser of opposite direction from causing luminance saturation to night vision device image pick-up device.
Further, described shell is the aluminum alloy casing with optical window, can also be corrosion-resistant steel explosion-resistant enclosure.
Further, described image pick-up device and camera lens part, can be used as standalone module and be placed in a shell, place with other parts split.
The beneficial effects of the utility model are: the vehicle-mounted laser night vision device achieving a kind of small integrated, auxiliary driving can be carried out on unglazed road or the darker road of surround lighting, effective night visual range more than 100 meters, can be installed in operator's compartment, also can by image unit and the separated installation of laser lighting unit.This practical new night visual range is far away, and effective night visual range more than 100 meters, can realize the night visual range that common car light cannot shine, and makes up the deficiency that existing car light assists driving distance near night.When car light damages, the effect of car light can be replaced, realize auxiliary driving at night.When this utility model can effectively suppress vehicle to cross, the car light high light of opposite vehicle suppresses, after installing palarizer additional, on the vehicle that also effectively can suppress all to be equipped with laser night-vision device, laser is to the mutual interference of image pick-up device, avoid causing image pick-up device luminance saturation, or brightness of image is excessive, the situation not seeing road surface occurs.The laser structure that this utility model uses is simple, does not need to carry out secondary optics shaping, does not need independent homogenizer, effectively improve laser utilization, reduces power consumption.
The utility model video display unit of need arranging in pairs or groups uses together, can increase the additional functioies such as storage, transmission over radio; The unaccounted-for technology of the utility model is existing actualizing technology well known by persons skilled in the art, does not do specific explanations at this; The improvement that the utility model basis is done and change, also belong to protection domain of the present utility model.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of embodiment 1.
Fig. 2 is the structural representation of embodiment 1.
Fig. 3 is the schematic diagram of embodiment 2.
Fig. 4 is the structural representation of figure embodiment 2.
Fig. 5 is the structural representation of embodiment 3.
In figure, 1, semiconductor laser, 2, laser heat-sink unit, 3, laser shaping camera lens, 4, image pick-up device, 5, pick-up lens, 6, optical maser wavelength gating unit, 7, ECU (Electrical Control Unit), 8, shell, 81, optical window, 9, palarizer.
Detailed description of the invention
Specific embodiment 1
A kind of vehicle-mounted laser assistant images acquisition device, is characterized in that: comprise semiconductor laser 1, laser heat-sink unit 2, laser shaping camera lens 3, image pick-up device 4, pick-up lens 5, optical maser wavelength gating unit 6, ECU (Electrical Control Unit) 7, shell 8.Be described in detail with regard to its structure respectively below.
First semiconductor laser 1 is existing device, can be vertical-cavity-face emitting semiconductor laser array, and laser power is 4W, laser center wavelength 808nm.Wherein vertical cavity surface emitting laser (Vertical-Cavity Surface-Emitting Laser, be called for short VCSEL, translate again vertical cavity surface emitting type laser) be a kind of quartz conductor, its laser vertical penetrates in end face, make with general individual chips of cutting, the edge-emitting laser that laser is penetrated by edge is different.
Further, described laser heat-sink unit 2 is aluminium alloy heat radiator, directly contacts with the heat generating components in semiconductor laser, for improving the radiating effect of semiconductor laser, subsidiary fan carries out wind-cooling heat dissipating, and wherein, fan section can increase radiating effect.
Further, laser shaping camera lens 3 is for being positioned over the aspherical surface convex lens (also claiming non-spherical lens) on laser bright dipping optical axis direction, focal length 6mm, and be coated with 808nm wavelength anti-reflection film on the surface of convex lens, laser emitting angle [alpha] is shaped as 40 °.
Further, described image pick-up device 4 is the low-light (level) image pick-up device of 2,000,000 pixels, and energy significant response optical maser wavelength, exports black-and-white video signal, for the collection of picture signal.
Further, described image pick-up device camera lens 5 is 8mm tight shot, more than effective resolution 2,000,000 pixel.
Further, described optical maser wavelength gating unit 6 is a centre wavelength 808nm narrow band pass filter, before being placed on image pick-up device camera lens, and filter bandwidth 10nm.Wherein narrow band pass filter is a kind of bandpass filter, and it utilizes the interference effect of dielectric and metallized multilayer film, from incident light, can choose specific wavelength, and its half-peak band width (half of peak value) is 1nm to 40nm.The utility model specific embodiment be the specification of bandwidth 10nm.
Further, described ECU (Electrical Control Unit) 7 is electrically connected by wire with image pick-up device 4, laser 1 and is responsible for powering to image pick-up device 4, laser 1, and what have hand switch control laser illuminator opens closedown.
Further, described shell 8 is the aluminum alloy casing with optical window, particularly, two optical windows 81, one of them passing through for laser, another one is used for the capture of image pick-up device, above-mentioned unit module is all placed in shell, forms an entirety.
This utility model can be applicable to, on the vehicles such as car, truck, lorry, be installed on operator's compartment position of rear view mirror as a using integral, or installs roof; When night travel, say that image pick-up device is presented at the auxiliary driving of realization on video display devices through video by data line, during effective suppression meeting, the impact of opposite car headlight, clearly can see road conditions clearly, effective night visual range more than 200 meters, adds night travel safety.
Specific embodiment 2
A kind of vehicle-mounted laser assistant images acquisition device, is characterized in that: comprise semiconductor laser 1, laser heat-sink unit 2, laser shaping camera lens 3, image pick-up device 4, pick-up lens 5, optical maser wavelength gating unit 6, ECU (Electrical Control Unit) 7, and shell 8.
Wherein, described semiconductor laser 1, be vertical-cavity-face emitting semiconductor laser array, laser power is 4W, laser center wavelength 980nm.
Further, described laser heat-sink unit 2 is copper radiator, directly contacts with the heat radiation original paper in semiconductor laser, is semiconductor laser cooling, is connected to shell by heat pipe.Wherein heat pipe is a kind of special material with all temperature characteristics fast, and the metal tube of its hollow, makes it have the feature of light weight, and the characteristic of its quick samming, then make it have excellent hot superconductivity; It is the most general heat conduction (non-heat radiation) element efficiently in electronic product radiating device now.
Further, described laser shaping camera lens 3 is for being positioned over the cylindrical lens on laser bright dipping optical axis direction, focal length 10mm, and the plane of incidence and exit facet are all coated with 980nm wavelength anti-reflection film, and laser level rising angle α is shaped as 30 °.Further, described image pick-up device 4 is the low-light (level) image pick-up device of 1,000,000 pixels, and energy significant response optical maser wavelength, exports black-and-white video signal.
Further, described image pick-up device camera lens 5 is 16mm tight shot, more than effective resolution 3,000,000 pixel.
Further, described optical maser wavelength gating unit 6 is for being placed on the narrow band pass filter of image pick-up device front center wavelength 980nm, filter bandwidth 10nm.
Further, in order to avoid installing the automobile of laser night-vision device, cross when travelling and cause laser intense laser interfere each other, before laser shaping camera lens 3 and pick-up lens 5, the palarizer 9 of each installation identical direction of polarization, a palarizer allowable vibration direction and horizontal direction angle are that the polarized light of 45 ° passes through.When effectively can suppress meeting, the laser of the automobile mounted night vision device of opposite direction, prevent the laser of opposite direction from causing luminance saturation to night vision device image pick-up device, or image is excessively bright, affects video effect.
Further, described ECU (Electrical Control Unit) 7 is responsible for powering to image pick-up device, laser, has hand switch to control the opening of laser, close.
Further, described shell 8 is the aluminum alloy casing with optical window.
Further, laser illuminator and camera lens image pick-up device are contained in aluminum alloy casing respectively, are placed on back mirror and operator platform position respectively.
This device collocation video display devices, can realize hidden driving at night, under no light conditions, effective night visual range is more than 150 meters, when effectively can suppress meeting, opposite vehicle car headlight and the impact of LASER Light Source of same laser assisted image capture system is housed, carries out night and auxiliaryly to drive.
Specific embodiment 3
As shown in Figure 5, a kind of vehicle-mounted laser assistant images acquisition device, is characterized in that: comprise semiconductor laser 1, laser heat-sink unit 2, laser shaping camera lens 3, image pick-up device 4, pick-up lens 5, optical maser wavelength gating unit 6, ECU (Electrical Control Unit) 7, shell 8.Just play structure below to be respectively described in detail.
First semiconductor laser 1 is existing device, and can be fiber coupled laser diode, laser power be 6W, laser center wavelength 808nm, fiber numerical aperture NA=0.22, adopts the SMA joints of optical fibre.Wherein, incide fiber end face light can not all transmit by optical fiber, the incident light just in certain angular range is just passable.The sine value of this angle [alpha] is just called the numerical aperture (NA=sin α) of optical fiber.SMA optical fiber head is also known as the joints of optical fibre or wire jumper, and wherein SMA is model.
Further, described laser heat-sink unit is replaced by shell 8, and laser is fixed on shell 8 bottom inside, and laser itself is separated with optical fiber head, is conducive to laser natural heat dissipation like this.
Further, laser shaping camera lens 3 for being positioned over the cemented doublet on laser bright dipping optical axis direction, focal length 8mm, and is coated with 808nm wavelength anti-reflection film on the surface of convex lens, and laser emitting angle [alpha] is shaped as 35 °.
Further, described image pick-up device 4 is the high definition low-light (level) image pick-up device of 2,000,000 pixels, and energy significant response optical maser wavelength, exports black-and-white video signal, for the collection of picture signal.
Further, described image pick-up device camera lens 5 is 12mm tight shot, effective resolution more than 2,000,000.
Further, described optical maser wavelength gating unit 6 is a centre wavelength 808nm narrow band pass filter, before being placed on image pick-up device camera lens, and filter bandwidth 20nm.Wherein narrow band pass filter is a kind of bandpass filter, and it utilizes the interference effect of dielectric and metallized multilayer film, from incident light, can choose specific wavelength, and its half-peak band width (half of peak value) is 1nm to 40nm.The utility model be the specification of bandwidth 20nm.
Further, described ECU (Electrical Control Unit) 7 is electrically connected by wire with image pick-up device 4, laser 1 and is responsible for powering to image pick-up device 4, laser 1, and what have hand switch control laser illuminator opens closedown.
Further, described shell 8 is the aluminum alloy casing with optical window, above-mentioned unit module is all placed in shell, forms an entirety.
This utility model can be applicable to, on the vehicle such as truck, lorry, be installed on operator's compartment position of rear view mirror as a using integral, or installs roof; When night travel, by data line, image pick-up device is presented at the auxiliary driving of realization on video display devices through video, during effective suppression meeting, the impact of opposite car headlight, clearly can see road conditions clearly, effective night visual range more than 300 meters, adds night travel safety.
Claims (9)
1. a vehicle-mounted laser assistant images acquisition device, is characterized in that:
Comprise shell, be provided with two optical windows on the housing,
And the semiconductor laser, laser heat-sink unit, laser shaping camera lens, image pick-up device, pick-up lens, optical maser wavelength gating unit and the ECU (Electrical Control Unit) that are encapsulated in shell;
The semiconductor laser used as a single LASER Light Source is corresponding with optical window to be installed; One, for catching image and the image pick-up device installed corresponding to another one optical window, and arranges pick-up lens between image pick-up device and the optical window of correspondence;
For laser heat-sink unit or the housing of semiconductor laser heat radiation;
For changing the rising angle of semiconductor laser and the described laser shaping camera lens making it to mate with the field of view angle of making a video recording is positioned over described semiconductor laser bright dipping optical axis direction;
Described optical maser wavelength gating unit is that a permission laser passes through and the veiling glare filtered out outside optical maser wavelength the narrow band pass filter be placed between image pick-up device with corresponding optical window,
And one and image pick-up device, laser carry out electrically connecting and ECU (Electrical Control Unit) for controlling image pick-up device, laser Push And Release.
2. vehicle-mounted laser assistant images acquisition device according to claim 1, it is characterized in that, described optical maser wavelength gating unit also comprises and is arranged on the laser shaping camera lens optical polarizator identical or close with the direction of polarization before pick-up lens respectively, described palarizer only allows the polarized light of a certain direction of polarization to pass through, and the direction of vibration of described polarizer transmission light and horizontal direction angle are 45 ° ± 10 °.
3. vehicle-mounted laser assistant images acquisition device according to claim 1, is characterized in that, described semiconductor laser is a vertical-cavity-face emitting semiconductor laser array or a fiber coupled laser diode.
4. vehicle-mounted laser assistant images acquisition device according to claim 1, is characterized in that, the distance of the focal length of described laser shaping camera lens and distance lasing fluorescence point is adjustable.
5. vehicle-mounted laser assistant images acquisition device according to claim 1, is characterized in that, described semiconductor laser power is at more than 2W, and more than centre wavelength 780nm is infrared invisible laser.
6. vehicle-mounted laser assistant images acquisition device according to claim 1, is characterized in that, described narrow band pass filter centre wavelength is the centre wavelength of semiconductor laser, and the deviation within allowing 10nm; Described narrow band pass filter bandwidth is between 5nm to 40nm.
7. vehicle-mounted laser assistant images acquisition device according to claim 1, is characterized in that, described laser shaping camera lens is positive lens or the positive lens groups for poly-lens composition, and can be simple lens or balsaming lens.
8. vehicle-mounted laser assistant images acquisition device according to claim 1, it is characterized in that, described image pick-up device pixel count is at least 400,000 pixels, can be simulation image pick-up device or the digital high-definition image pick-up device of energy significant response optical maser wavelength, export black-and-white video signal, more than frame frequency 25Hz.
9. vehicle-mounted laser assistant images acquisition device according to claim 1, is characterized in that, described image pick-up device camera lens can be tight shot, also can be that zoom lens is as focusing use.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108363069A (en) * | 2018-01-18 | 2018-08-03 | 中国科学院理化技术研究所 | Associated imaging device and method based on distributed semiconductor laser array |
| CN108871232A (en) * | 2018-07-27 | 2018-11-23 | 航天智造（上海）科技有限责任公司 | A kind of laser profile detection device |
| CN109154985A (en) * | 2016-05-24 | 2019-01-04 | 奥迪股份公司 | Motor-driven vehicle headlight adapter linear polarization light radiation in the driver assistance system based on video camera |
| CN109819175A (en) * | 2019-01-23 | 2019-05-28 | 中国科学院长春光学精密机械与物理研究所 | A kind of photographic method and camera arrangement |
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| US11011100B2 (en) | 2018-09-10 | 2021-05-18 | Lumileds Llc | Dynamic pixel diagnostics for a high refresh rate LED array |
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| US11438977B2 (en) | 2018-10-19 | 2022-09-06 | Lumileds Llc | Method of driving an emitter array |
| US11800610B2 (en) | 2018-10-19 | 2023-10-24 | Lumileds Llc | Method of driving an emitter array |
| CN109819175A (en) * | 2019-01-23 | 2019-05-28 | 中国科学院长春光学精密机械与物理研究所 | A kind of photographic method and camera arrangement |
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Effective date of registration: 20210527 Address after: 213000 No.143, Qingyang North Road, Tianning District, Changzhou City, Jiangsu Province Patentee after: Changzhou Yixuan Laser Technology Co.,Ltd. Address before: 250014 11-2-3-502, Qianfo Shandong Road, Lixia District, Jinan City, Shandong Province Patentee before: Xian Yang |