DE10348117A1 - Infrared radiation source for infrared night vision system of vehicle, has infrared light-emitting diodes arranged at distance from light signaling devices, where distance is greater than dimension of nearest signaling device - Google Patents

Infrared radiation source for infrared night vision system of vehicle, has infrared light-emitting diodes arranged at distance from light signaling devices, where distance is greater than dimension of nearest signaling device

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Publication number
DE10348117A1
DE10348117A1 DE10348117A DE10348117A DE10348117A1 DE 10348117 A1 DE10348117 A1 DE 10348117A1 DE 10348117 A DE10348117 A DE 10348117A DE 10348117 A DE10348117 A DE 10348117A DE 10348117 A1 DE10348117 A1 DE 10348117A1
Authority
DE
Germany
Prior art keywords
vehicle
leds
infrared radiation
radiation source
infrared
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE10348117A
Other languages
German (de)
Other versions
DE10348117B4 (en
Inventor
Jörg Dr.rer.nat. Moisel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BURANI CONSULTING LIMITED LIABILITY COMPANY, W, US
Original Assignee
DaimlerChrysler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE10338923.7 priority Critical
Priority to DE10338923 priority
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Priority to DE10348117A priority patent/DE10348117B4/en
Priority claimed from GB0418479A external-priority patent/GB2406161B/en
Publication of DE10348117A1 publication Critical patent/DE10348117A1/en
Publication of DE10348117B4 publication Critical patent/DE10348117B4/en
Application granted granted Critical
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00Arrangements or adaptations of optical signalling or lighting devices
    • B60Q1/0029Spatial arrangement
    • B60Q1/0035Spatial arrangement relative to the vehicle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00Arrangements or adaptations of optical signalling or lighting devices
    • B60Q1/02Arrangements or adaptations of optical signalling or lighting devices the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04Arrangements or adaptations of optical signalling or lighting devices the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14Arrangements or adaptations of optical signalling or lighting devices the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/12Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
    • F21S41/13Ultraviolet light; Infrared light
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

The invention relates to a vehicle infrared radiation source with a plurality of IR LEDs, of which a substantial part or all IR LEDs are offset from the vehicle lighting system and distributed over a large area of typically more than 20 x 20 cm. The IR LEDs, which are preferably arranged at a distance from one another, are arranged in the region of the vehicle window, the radiator grille or the bumper or vehicle aprons at a considerable distance from the vehicle lighting system, in particular to the headlamps, the fog lights, the reversing headlamps. The distribution of the remote IR LEDs over a large area ensures that the infrared radiation source ensures sufficient eye safety, and thus ensures that damage to the eyes of other road users is largely excluded. The infrared radiation source according to the invention proves to be an advantageous component of an infrared night vision device, which ensures an improvement in visibility even in darkness or poor visibility.

Description

  • The The invention relates to a vehicle infrared radiation source for an infrared night vision system or an infrared night vision system.
  • In Regulation No ECE 48; Uniform conditions for approval the vehicles with regard to the installation of the lighting and light-signaling devices; BGBl II, 1995, No. 32, Anlageband, pp 1-56 are the requirements to the approval of a vehicle lighting system shown. In this Regulation is, for example, defined where on the vehicle vehicle headlights can be arranged and which shape a beam of a vehicle headlight have got to. additional to this regulation for The vehicle lighting system is subject to the regulations of road traffic license §§ 50 ff. added.
  • From the European patent application EP 1 191 279 A2 a light source for a vehicle is known which emits both visible light and infrared radiation. This design of this vehicle headlamp ensures that damage to the retina of the eye of a road user is largely precluded by the infrared radiation of the headlamp, since the intense infrared radiation is emitted together with visible light and the visible light leads to dazzling of the road user, resulting in a head turn or a blinking reflex, thereby preventing the infra-red radiation from striking the sensitive retina.
  • Out The DIN 5031 is known that visible light electromagnetic Radiation with one wavelength between 380 nm and 780 nm and as such is detected by the eye and can be perceived as colored light. In contrast, under infrared radiation in principle only electromagnetic radiation with a wavelength above of 780 nm understood. This infrared radiation takes the eye regularly not true as a colored visual impression, so through intense infrared Radiation a hazard For example, the retina can go out.
  • It Object of the invention, an infrared radiation source for a vehicle indicate that is suitable for an infrared night vision system to be used, and that the danger for the Eye of a road user keeps low. Another task of Invention is to provide an infrared night vision system its infrared radiation source and thus the infrared night vision system a danger largely excludes the eye.
  • These Tasks are solved by a vehicle infrared radiation source having the features of Claim 1 and an infrared night vision system for a vehicle having the features of claim 14.
  • advantageous Further developments of the invention are the subject of the dependent claims.
  • The The invention relates to a vehicle infrared radiation source, ie a radiation source for Infrared radiation with a wavelength> 780 nm so not a source of visible Light. This vehicle infrared radiation source shows several infrared LEDs, also called IR LEDs, of which at least an essential part is discontinued from the vehicle lighting system and thus not part the vehicle lighting system, for example, the front or rear lights is or is connected to these. The remote IR LEDs are over one area distributed arranged on the vehicle. The area typically shows a Extension of more than 10 cm × 10 cm or a largest extent of more than 15 cm. In exceptional cases, smaller dimensions of the area possible. This arrangement of IR LEDs over a considerable area ensure that the infrared emitted by the IR LEDs Radiation is not so concentrated that it causes damage to the Eyes in particular the retina of road users can. In contrast, the emitted radiation is sufficient overall for the Irradiation of the vehicle environment by means of infrared radiation, so that the infrared radiation reflected from the environment through an infrared-sensitive camera captured and after an optional Preparation of image data provided to the driver can be. With the help of this infrared night vision system with the described, vehicle infrared radiation source according to the invention will it be possible on the one hand a safe and effective irradiation of the vehicle environment to reach by means of infrared radiation and the irradiated environment If necessary, the driver safe and reliable represent and therefore available to deliver.
  • By this arrangement, on the one hand the traffic safety for the driver is increased, in which he can perceive the environment even under difficult conditions, for example, at night or in fog safer and better. On the other hand, the safety for other road users by reducing the risk of damage from the infrared radiation is reduced or largely excluded. This is due to the special arrangement of the IR LEDs respectively by the distribution of the IR LEDs over a considerable area he enough.
  • there it has proven to be particularly effective the essential part of the IR-LEDs, which from the vehicle lighting system, in particular of the headlamps, the fog lights, the reversing lights, the Tail lights, spaced to arrange, in particular with a distance greater than the dimension of the nearest Part of the vehicle lighting system to be spaced from this. Through this Training succeeds, the infrared radiation safely from the visible Separate light and the individual sources on the one hand for visible Light, on the other hand for infrared radiation safely and optimally separated from each other and optimal for their respective needs train. For example, it has been proven, the light sources in terms their opening diameter small and compact form, which in particular by the xenon headlights in particular allows is where it has been proven against it according to the invention, the IR LEDs or a substantial part of the IR LEDs have a considerable, larger area on the vehicle to arrange distributed. this makes possible an optimized arrangement of the different sources.
  • A Particularly preferred embodiment of the vehicle infrared radiation source according to the invention shows that the IR LEDs or a substantial part of them flat with the vehicle body are connected. As a result, a secure mechanical coupling of Given IR LEDs, so that even under very difficult conditions, as for example by the vibrations in vehicle operation are given, not destroyed can or can impaired in their function can be. there it has proven to be particularly effective the IR LEDs are not only mechanical, flat to couple, but in addition to this mechanical coupling and a thermal Coupling to ensure, reducing the heat loss of the IR LEDs, which in the Operation of the IR LEDs arises, safely to the body of the vehicle can be issued and thereby the durability of the IR LEDs essential elevated can be. About that In addition, it is possible by this thermal coupling, the operation of IR LEDs in one maintain particularly preferred temperature range, reducing the emission characteristics the infrared radiation source, or the IR LEDs very specific and precise guided can be.
  • To Another preferred embodiment of the invention will be a part or all IR LEDs arranged in a recess of the vehicle body. By This arrangement ensures that the IR LEDs are not or only a little over protrude from the body of the vehicle and thereby the influences of Environment, for example, by wind, rain and storm or snow considerably less exposed. By this arrangement in depressions for example, in grooves or in columns or in areas of abutting sheets the body succeeds on the one hand, the mechanical protection of To ensure IR LEDs and on the other hand the functionality the IR-LEDs not or only to a limited extent. at this arrangement has proven to be particularly advantageous packaged LEDs to use, since these proved to be particularly resistant have and despite their expansion safely housed in the body can be.
  • Preferably become an essential part of the IR LEDs in the area of the vehicle windows, the radiator grille, the bumper or the vehicle aprons arranged. It has proven to be particularly useful, these IR LEDs in addition to the packaged Variant as well not housed To train LEDs and directly to the body of the vehicle connect. This arrangement of the IR LEDs in the area of the vehicle windows, the radiator grille, the bumper or the purse allows safe illumination of the vehicle environment with infrared radiation, because these body parts on the one hand formed substantially flat and on the other hand have an orientation that is forward, directed to the side or to the rear with respect to the vehicle and thus a simple and effective lighting of the vehicle environment enable.
  • In particular, it has proven useful to arrange the IR LEDs in the region of the vehicle window, in particular in the region of the frame, for example, the A or C pillar or in or on the vehicle window. On the one hand, this position makes it possible to safely illuminate the environment due to the elevated position in the vehicle body and, on the other hand, to reliably secure the mechanical connection of the IR LEDs, since the materials used, in particular the vehicle window, enable effective application of the IR LEDs. For example, the vehicle windows can be easily manufactured with such IR LEDs during the manufacturing process of the vehicle windows. In addition, it has proven particularly useful to arrange the IR LEDs in the area of the vehicle aprons or, in the grille, which also allows safe illumination of the area in front of or behind the vehicle and particularly benefits from the fact that these vehicle body parts essentially a little inclined orientation show and thus allow the lighting of the environment in a simple way or aufwen ended additional tilt elements. When arranging the IR LEDs in the area of the vehicle apron or the grille, it has proven useful to provide precautions, by means of which the IR LEDs can be cleaned of dirt if necessary. This can, for example, by a mechanical wiping or by spraying by means of a Cleaning liquid, for example by means of water.
  • When it has proven to be particularly advantageous at least one part the IR LEDs spaced apart, so that no contiguous arrangement the IR LEDs is created, which for a road user the effect of a coherent huge Infrared light source would have, like for example, by IR LEDs grouped into an array can arise without any spacing. According to the invention is straight through the spatial Distribution over a larger area, in particular by the spacing of the individual LEDs, ensures that a threat to the Road users excluded by excessive infrared radiation is. It has proven particularly useful to space the IR LEDs so that the distance is greater than their dimension or a multiple thereof.
  • Besides has it proven a part or all IR-LEDs into groups with a small number of IR LEDs and to arrange these groups apart from each other. It has it is proven the groups with a number below 100 IR LEDs are particularly typical in the range of 10-30 Designing LEDs, which is particularly ensured that a local potentially harmful Infrared radiation intensity not exceeded becomes. By combining individual IR LEDs into groups you can significantly reduce the tax and energy supply, which the Handling, susceptibility and the cost of the vehicle infrared radiation source significantly lowers. It has proven particularly useful, the individual groups on different vehicle components, for example below or on the side or above the vehicle window, in particular windshield and / or the grille and / or the front apron. This differentiated arrangement of the groups ensures that that a comprehensive effective irradiation of the vehicle environment with Infrared radiation allows is.
  • It has proved to be very advantageous, the vehicle infrared radiation source according to the invention train so that the for the control or for the power supply of the IR LEDs lines are provided at least partially or all running in the bodywork are formed. This training ensures that the energy supply and the control is ensured even under difficult external circumstances. The Body provides mechanical or chemical protection the lines and thus the functionality of the infrared radiation source the vehicle safely. This ensures that even difficult external circumstances such as For example, rain, acidic or alkaline solvents, for example Car washes have no significant impact on the functionality and durability of the performance of the vehicle infrared radiation source demonstrate. In this case, the control line is preferably at least partially not visible running in the body running. This can be, for example be done by the lines below the color layer of the Paint are arranged or are formed transparent, so that the control lines or power supply lines for the IR LEDs when viewing the vehicle with the vehicle infrared radiation source according to the invention are visible only to a limited extent or are visible at all.
  • Thereby manages to prevent the aesthetic impression of the vehicle not be significantly negatively affected by the line. About that In addition, by an arrangement between the color layer and the carrier the body part, for example in the form of a sheet or a Plastic carrier guaranteed that safe and protected Arrangement without negative aesthetic Effect is created. This type of arrangement has gone through its easy integration into the manufacturing or painting process the body part or the vehicle as a whole particularly proven.
  • The Training the line in particular the control lines as transparent Lines for example, by the application of the lines in the form of thin Metal foils or metal-containing films, for example, formed from indium tin oxide is. By using the appropriate electrically conductive in particular Metallic materials in conjunction with the selected material strength succeeds it, largely invisible or completely transparent lines especially for the control lines but also for Realizing supply lines. These transparent wires can also between the color layer and the transparent cover layer of the paint system can be arranged and can also be a later Apply time in the painting process, which is the handling noticeably improved in the manufacturing process.
  • It has proved to be particularly advantageous to provide one or more control devices for the control of the IR LEDs. These control devices are offset from the vehicle lighting system and, in particular in the region of the IR LEDs, are preferably arranged in the range of grouped IR LEDs. With this design, the length of the control lines can be significantly reduced, so that the cost of manufacturing and the handling of the infrared radiation source is substantially improved. The control devices are preferably so out forms that they can be arranged in the region of recesses of the body, so that they can be optically but also mechanically integrated into the body shape together with the IR LEDs and thereby undergo an optical and mechanical protection. In these depressions, the forces of the environment, in particular at high speeds of the airstream, do not act on the components of the vehicle infrared radiation source, in particular on the IR LEDs or on the control devices, so that they on the one hand ensure effective irradiation of the surroundings. This is possible over a longer period even under difficult external conditions.
  • there it has proven to be particularly effective to realize this control device in the form of film circuits, the very flat, integrated circuits, for example in shape Bonded This includes only a small amount and thus very easy in the body especially in wells or in the lacquer layer or between the lacquer and the support of the Body parts can be accommodated. In addition, it has become special proven, to arrange the control device in the range of individual groups of IR LEDs, so that the individual control lines from the control device can be kept very short to their assigned IR LEDs. This allows one very compact and modular realization of groups with associated Control device. Leave these groups with controllers If necessary, arrange themselves on a common film carrier, which is modular and for example on a body part such as the hood or applied to the A-pillar and in particular in the context of painting at least through the transparent Topcoat can be mechanically and chemically protected. This results very easy to implement and manufacturing technology cost-effectively manufactured Vehicle infrared radiation sources.
  • It has proved to be particularly advantageous, the control device such that the IR LEDs of the vehicle infrared radiation source differentiated can be controlled. This is preferably done in the way that groups of IR LEDs of the vehicle infrared radiation source are formed, which differentiated in particular speed-dependent be switched on or off. For example, it's special proven at higher speeds the vehicle to activate a group of IR LEDs, which the Area of the vehicle at a greater distance to the particular irradiated in front of the vehicle with infrared light. The activation This group of IR LEDs can be complementary to those already done Activation of other IR LEDs is also possible as an alternative.
  • there can The groups of IR LEDs on the one hand by a differentiated Training the individual IR LEDs, for example, by certain wide-beam characteristics different from the others and by selectively driving this group a specific, changeable Generate beam characteristic. This can be done for example by optical Elements are reached, which are assigned to individual IR LEDs, but also by a specific orientation of individual IR LEDs and thus the Arrangement on the vehicle. It can the IR LEDs of each group separated but also mixed arranged on the vehicle or be attached. Especially proven has a separate arrangement of each group, which differentiates, for example, speed-dependent and or weather-dependent or from the external conditions be activated or deactivated. In doing so, these outer or vehicle-specific situations detected by appropriate sensors and the information on the respective situation of the control device supplied for driving the IR LEDs.
  • Furthermore it has proven to be particularly effective the IR LEDs as vertical laser diodes, also VCL diodes or VCSEL diodes called to realize. This type of IR LEDs turn out to be particularly advantageous because they are primarily or almost exclusively vertical emit infrared radiation and thus very directionally selective emit infrared radiation, so by the way of installation or the orientation during installation very selectively determined radiation characteristics the vehicle infrared radiation source can be achieved.
  • It has proven particularly useful to design the IR LEDs so that they emit exclusively infrared radiation with a wavelength above 780 nm, in particular above 830 nm. This ensures that no visible color impression can occur in a road user. It is also ensured that no disturbing effect by a reddish glow or reddish shimmering impression by the IR LEDs in the front area of the vehicle, which is provided with the infrared radiation source according to the invention, can arise, which could lead to a misinterpretation as a taillight of the vehicle. Such a false impression due to a supposedly perceived reddish shimmer is ensured on the one hand by the choice of IR LEDs with very low inherent luminosity and by the choice of the emission range of the IR LEDs, in particular with a wavelength above 830 nm. This leads to a very effective source of infrared radiation which enables a safe, reliable and also sufficiently powerful irradiation of the vehicle environment with infrared radiation, so that the surroundings reflect and reflect the infrared radiation infrared radiation is detected by an infrared-sensitive camera of an infrared night vision device and made available to the vehicle driver directly or after signal processing. In addition, it is ensured by the infrared radiation source according to the invention that the infrared radiation source is not misinterpreted as a red tail light. This is ensured on the one hand by the low individual transmission power of the IR LEDs as well as by their distributed arrangement as well as by the choice of the emission range.
  • Next relates to the formation of a vehicle infrared radiation source the invention also provides an infrared night vision system for a vehicle with a vehicle infrared radiation source as described above is. Such an infrared night vision system proves to be very safe in operation, especially with regard to misinterpretations. This is what the vehicle does with such an infrared night vision system very safe in operation, since on the one hand to improve the View and thus to a reduction of traffic accidents leads and on the other hand this property over a very long period of time and in a very reliable way.
  • in the In the following, the invention will be described with reference to one in three figures, preferred, exemplary embodiments of the invention explained.
  • 1 shows a vehicle in front view with an infrared night vision system according to the invention and with two vehicle infrared radiation sources according to the invention,
  • 2 shows the schematic structure of a vehicle infrared radiation source according to the invention and
  • 3 shows an integration of an IR LED of a vehicle infrared radiation source according to the invention in a body part.
  • In 1 is schematically a vehicle 1 represented in a view from the front so from the direction of travel. The vehicle 1 shows two vehicle headlights 2 , which the low beam or high beam of the vehicle 1 in the area in front of the vehicle 1 toss. The dipped beam or main beam represents visible light of a wavelength between 380 and 780 nm wavelength. Between the two headlights 2 is the grille 5 arranged. On the grille is an arrangement 3a arranged from a plurality of IR LEDs. This arrangement 3a represents a cross-shaped arrangement of several distributed on two lines IR LEDs. Here are the IR LEDs of the arrangement 3a realized as a packaged LEDs, which are arranged so that they are the area in front of the vehicle 1 safely irradiated with infrared radiation, ie with a wavelength above 830 nm. By the cross-shaped arrangement 3a in or on the radiator grille 5a is a safe, powerful irradiation of the environment in front of the vehicle 1 guaranteed. It is ensured that the infrared radiation reflected by the surroundings through the camera arranged in the vehicle interior 4 can be safely detected. The reflected and detected infrared radiation is displayed in a display, which is located in the area of the speedometer as a video image and thus the driver of the vehicle 1 made available. Thus, the driver is in the position, even at night or in poor weather conditions with the help of the infrared night vision system, which essentially from the infrared radiation source 3a , the infrared-sensitive camera 4 and the display (not shown) is be to guide the vehicle safely. The illustrated infrared night vision system provides an improved view of the environment and thereby makes a significant contribution to increasing the vehicle safety or to prevent accidents.
  • The IR LEDs of the arrangement 3a are distributed over an area of about 60 × 30 cm, so that the infrared radiation emitted by the IR LEDs is not suitable, damage to the eyes or the retina of the eyes of another road user, for example, a pedestrian, which is in front of the vehicle located in the area of a pedestrian crossing, for example. Due to this large-scale distribution of low-performance IR LEDs, this danger to other road users is largely excluded.
  • This arrangement 3a is also characterized by the fact that they or their IR LEDs a clear distance from the lighting system of the vehicle 1 or from the headlamps 2 of the vehicle 1 to have. As a result, a mutual influence is excluded and given a reliable information of the environment based on the detected reflected infrared radiation.
  • Here is the distance of the arrangement 3a from the lighting system much larger in particular larger than three times the size of the headlights 2 ,
  • Next to the arrangement 3a is the vehicle 1 with another arrangement 3b made of IR LEDs. This arrangement 3b is arranged in the form of two lines combined into rows in the two A-pillars, ie to the right and left side of the vehicle window. By this arrangement of the infrared radiation source 3b succeeds, a differentiated irradiation of the vehicle environment compared to the infrared radiation source 3a realize. While the infrared radiation source 3a radiates substantially into the area in front of the vehicle, then radiates the infrared radiation source 3b both forward and to the side. The combination of the two infrared radiation sources 3a . 3b Ensures comprehensive, reliable infrared radiation of the area in front of the vehicle as well as to the right and left of the front area of the vehicle. This common irradiation ensures that the camera 4 can capture a comprehensive presentation of the relevant driving range. Here are the two infrared radiation sources 3a . 3b independently controllable, so that if necessary only the arrangement 3a For example, it is driven or operated at a high speed while the infrared radiation source is at low speeds 3b alone or together with the infrared radiation source 3a is controlled or operated. Here is the infrared radiation source 3b in the A-pillars of the vehicle 1 designed so that they emit both forward and to the side of infrared radiation. Due to the very high arrangement in the area of the vehicle window 6 succeeds in realizing a very reliable and far-reaching irradiation of the environment. This position of the IR LEDs in the infrared radiation source 3b proves to be very beneficial.
  • It has proven particularly useful, the IR LEDs of the infrared radiation source 3b in a groove between the A-pillar and the vehicle window 6 of the vehicle 1 to arrange where they are mechanically protected. By this arrangement in a recess of the vehicle or the body of the vehicle, it is possible a very safe and durable operation of the infrared radiation source 3b and allow the infrared night vision device.
  • In 2 is the arrangement 3a shown in more detail. The order 3a shows a plurality of individual IR LEDs 3 , which are realized as housed IR LEDs. These IR LEDs 3 are via electrical supply lines 8th and control lines 9 connected with each other. The IR LEDs 3 are arranged on two intersecting lines, which at their intersection point a control device 7 exhibit. About the controller 7 become the IR LEDs 3 energized or with appropriate control signals so that they can be turned on or off as needed. The wires 8th . 9 are realized as electrically conductive lines. Partly they are made of transparent indium tin oxide. This realization of the wires 8th . 9 Indium tin oxide is chosen in the areas where the infrared radiation sources 3a could have a negative impact on the design or on the aesthetic effect of the vehicle, in particular the radiator grille of the vehicle. By the arrangement of the control unit 7 in the crossing area of the lines 8th . 9 or the IR LEDs grouped into lines 3 manages the length of the necessary lines 8th . 9 keep short and thus keep the cost of such an infrared radiation source or for a corresponding infrared night vision device low. In addition, such an infrared radiation source proves 3a also as very robust, since the line length and thus the risk of damage and thus malfunction or failure of the infrared radiation source is significantly reduced. The control unit 7 is centrally controlled by a central power supply or by a control signal supply, for example, by a switch in the vehicle interior.
  • Through the design of the control unit 7 is it possible to supply the energy through the wires 8th . 9 together, so both for power supply as the controller to use.
  • The IR LEDs of the arrangement 3a , form a group of about 10 IR LEDs which are distributed over a considerable area and thereby ensure that too high a concentration of infrared radiation on the retina of a road user is prevented and thereby largely excluded damage to the retina by the emitted infrared radiation is. This small number of IR LEDs which over this considerable area of the radiator grille of the vehicle 1 distributed the risk of damage to the eyes of a road user largely excludes.
  • This is ensured in particular by the fact that the individual IR LEDs 3 are formed clearly spaced from each other.
  • In the 3 is an exemplary arrangement of an IR LED 13 an infrared radiation source shown. The IR LED 13 is integrated into a body part, being between a transparent cover layer 12 and a carrier 10 of the body part is arranged. The carrier 10 is as a metal sheet, for example, as part of the A-pillar of the vehicle 1 realized. Between the metallic carrier 10 and the IR LED is the color layer 11 arranged, which extend over the metallic carrier 10 extends. The color layer 11 and the transparent cover layer 12 Form the paint of the body part. Here is the color layer 11 in the range of the IR-LED 13 designed so that a good thermal coupling between the IR LED 13 and the metallic carrier 10 consists. Through this area-trained, good thermal coupling, the removal of the waste heat, which is formed in the conversion and emission of electrical energy in infrared radiation, to the carrier 10 ensures and thereby the IR LED 13 against overheating and thus protected against destruction. This good thermal coupling is the life of the IR LED 13 significantly increased. This is of particular importance because of the integration of the IR LED 13 in the body part 10 . 11 . 12 an exchange of a single IR LED 13 not possible or only with great effort is possible. The power for the operation of the IR LED is via the wires 18 fed. The control of the IR-LED 13 takes place via the control lines 19 which is between the transparent cover layer 12 and the color layer 11 are applied. The wires 18 . 19 are transparent. This is achieved by using a very thin substantially transparent metal foil forming the leads. These metallic cables enable the power supply and control of the IR-LED 13 , This is possible without significant visual impairment or adverse effect on the design of the vehicle.
  • The transparent cover layer 12 is at least in the range of the IR-LED 13 or in the region of the infrared radiation source selected or designed such that it has a very low attenuation for the infrared radiation having a wavelength greater than 830 nm high transparency.
  • By this layered structure, it is possible to produce the body part very reliable and safe, as the metallic carrier 10 first with the color layer 11 is provided and only then in the already by the color layer 11 Protected state, the components of the infrared radiation source, for example, the lines 18 . 19 and the IR LEDs 13 be applied. Subsequently, this arrangement with the transparent cover layer 12 Mistake. This sequence of production steps ensures a high manufacturing quality of the infrared radiation source or of the body part.
  • The used IR-LED 13 is preferably not used in a boxed but in a unhoused state as die. This makes it possible to choose the surface of the IR LED very small, so that the visual impact of the design, ie a negative effect on the optical effect is largely excluded. The unhoused IR LEDs can be realized as a single LED or as a waver of several individual IR LEDs, for example, as a group of a few example, six unhoused IR LEDs.

Claims (14)

  1. Vehicle infrared radiation source for an infrared night vision system with a plurality of IR LEDs, characterized in that a substantial portion of the IR LEDs is deposited from the vehicle lighting system and distributed over a surface.
  2. Vehicle infrared radiation source according to claim 1, Thus, a substantial portion of the IR LEDs are characterized by the vehicle lighting system in particular of a headlight, from a fog light, from a reversing light, from a tail light is spaced apart, in particular with a distance greater than the dimension of the nearest Part of the vehicle lighting system.
  3. Vehicle infrared radiation source according to claim 1 or 2, thus indicating that an essential part of the IR LEDs flat connected in particular thermally coupled to the vehicle body is.
  4. Vehicle infrared radiation source according to one of preceding claims, daudrch Characterized that a substantial portion of the IR LEDs in a recess the vehicle body is arranged.
  5. Vehicle infrared radiation source according to one of previous claims, Thus, a significant portion of the IR LEDs are in the market Area of the vehicle windows, the radiator grille, the bumper, the Mirrors or vehicle aprons is arranged.
  6. Vehicle infrared radiation source according to one of previous claims, Thus, at least some of the IR LEDs are individually labeled is arranged at a distance from each other.
  7. Vehicle infrared radiation source according to one of previous claims, Daudrch gekennziechnet that at least a portion of the IR LEDs for Groups are summarized with a small number of IR LEDs and these groups are spaced from each other.
  8. Vehicle infrared radiation source according to one of previous claims, Daudrch gekennziechnet that control and / or power supply lines are provided, which are formed running in the body.
  9. Vehicle infrared radiation source according to claim 8, Daudrch gekennziechnet that control and / or power supply lines are not visible in the body extending, in particular arranged below the paint layer of the paint or transparent are formed.
  10. Vehicle infrared radiation source according to one of previous claims, Daudrch gekennziechnet that one or more control devices for the Control of IR LEDs are provided by the vehicle lighting system discontinued and are arranged in particular in the field of IR LEDs.
  11. Vehicle infrared radiation source according to one of previous claims, Thus, the IR LEDs are only infrared radiation with one wavelength above 780 nm, especially above 830 nm.
  12. Vehicle infrared radiation source according to one of previous claims, As a result, at least part of the IR LEDs are in one or more groups are grouped by the control device are selectively controllable and depending on the driving situation selectively in groups are controllable.
  13. Vehicle infrared radiation sources according to one of previous claims, Thus, at least some of the IR LEDs are designed as vertical laser diodes is.
  14. Infrared night vision system for a vehicle with a vehicle infrared radiation source according to any one of the preceding claims.
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DE10348117A DE10348117B4 (en) 2003-08-20 2003-10-16 Vehicle infrared radiation source for an infrared night vision system

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DE10348117A DE10348117B4 (en) 2003-08-20 2003-10-16 Vehicle infrared radiation source for an infrared night vision system
GB0418479A GB2406161B (en) 2003-08-20 2004-08-18 Vehicle-mounted infrared radiation source for an infrared night vision system
FR0408953A FR2858955B1 (en) 2003-08-20 2004-08-18 Infrared ray source for vehicles adapted to an infrared night vision system
JP2004239014A JP2005132344A (en) 2003-08-20 2004-08-19 Vehicle infrared radiation source for infrared night vision system
US10/922,498 US20050041435A1 (en) 2003-08-20 2004-08-20 Vehicle infra-red light source for an infra-red night vision system

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CZ298550B6 (en) * 2006-07-11 2007-10-31 Krivanec@Jaroslav Converter for large-area representation of night scene
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DE102016204370A1 (en) * 2016-03-16 2017-09-21 Rainer Diederich Infrared light for a vehicle
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DE102016204370B4 (en) * 2016-03-16 2017-10-26 Rainer Diederich Infrared light for a vehicle

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