WO2020043579A1 - Lentille optique pour un dispositif de balayage laser pour un système d'assistance de conduite - Google Patents

Lentille optique pour un dispositif de balayage laser pour un système d'assistance de conduite Download PDF

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Publication number
WO2020043579A1
WO2020043579A1 PCT/EP2019/072426 EP2019072426W WO2020043579A1 WO 2020043579 A1 WO2020043579 A1 WO 2020043579A1 EP 2019072426 W EP2019072426 W EP 2019072426W WO 2020043579 A1 WO2020043579 A1 WO 2020043579A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
laser
biconical
laser scanner
laser radiation
Prior art date
Application number
PCT/EP2019/072426
Other languages
German (de)
English (en)
Inventor
Ho-Hoai-Duc Nguyen
Original Assignee
Valeo Schalter Und Sensoren Gmbh
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
Application filed by Valeo Schalter Und Sensoren Gmbh filed Critical Valeo Schalter Und Sensoren Gmbh
Publication of WO2020043579A1 publication Critical patent/WO2020043579A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/42—Simultaneous measurement of distance and other co-ordinates
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
    • G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4814—Constructional features, e.g. arrangements of optical elements of transmitters alone
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0052—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a laser diode
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0085—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with both a detector and a source
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/06—Simple or compound lenses with non-spherical faces with cylindrical or toric faces

Definitions

  • the present invention relates to an optical lens for a laser scanner.
  • the present invention relates in particular to a biconical lens with a
  • the present invention relates to a laser scanner for a driving support system of a motor vehicle and a
  • Driving support system comprising such a laser scanner.
  • the present invention relates in particular to a laser scanner which has reduced scattered radiation and thereby reduces the risk to persons or animals who are in the detection range of the laser scanner.
  • Laser scanners are widely used for motor vehicle driving support systems.
  • laser scanners are used to detect the surroundings of a vehicle and, for example, to detect objects, such as objects, animals or people, in order to determine their spatial position and their distance from the vehicle.
  • laser scanners Since eye safety is therefore of great importance for laser scanners, laser scanners currently have to be certified with laser class 1 in order to enable operation in road traffic.
  • US 2017/0108582 A1 describes a photoelectric sensor.
  • a lens is provided which is positioned on a light-emitting element and is designed as a biconical lens.
  • the lens is provided which is positioned on a light-emitting element and is designed as a biconical lens.
  • Bending radii can be set according to a specific pattern.
  • US 2017/059838 A1 also describes a light-emitting device, in particular for a camera. It is provided that such a device is equipped with a biconical lens.
  • the biconical lens is made of a polymer.
  • the object of the present invention to at least partially overcome the disadvantages known from the prior art. It is in particular the object of the present invention to provide a solution by means of which a laser scanner can be provided which, with an advantageous property profile, has a low risk of glare for animals and / or people.
  • the object is achieved by a lens with the features of claim 1 and by a laser scanner with the features of claim 5
  • optical lens for a laser scanner is proposed, the optical lens being designed as a biconical lens, the biconical lens being designed as a biconical hybrid lens, the biconical hybrid lens having a glass body which is provided with a polymer coating.
  • Such a lens allows in particular the generation of a laser scanner that has a low risk of glare with a lens that has a balanced property profile.
  • a lens for a laser scanner is thus described.
  • Such a lens can fundamentally be arranged at different points in a beam path in a laser scanner and in particular serve to influence laser radiation.
  • the lens described here is designed as a biconical lens.
  • a biconical lens is to be understood in particular as a lens of this type which has a curvature in two planes which are different from one another and in particular are arranged at right angles to one another.
  • a curvature can be formed in the horizontal and vertical planes, so that radiation passing through the lens, in particular laser radiation from a laser scanner, can focus both in the vertical and in the horizontal plane.
  • the biconical lens is thus a conical lens with radii in two planes. It can be provided that the first curvature defines the focus length of the hybrid lens and that the second curvature defines aspherical parameters.
  • the biconical lens is designed as a biconical hybrid lens.
  • a biconical hybrid lens is to be understood in particular as a lens of this type which is formed from at least two materials.
  • the lens is in particular designed such that a first material forms a first curvature and that a second material different from the first material forms a second curvature of the biconical lens.
  • the first material is glass and the second material is a plastic or a polymer, it being provided in particular that the biconical hybrid lens has a glass body which is provided with a polymer coating.
  • This configuration in particular can have significant advantages over the solutions from the prior art.
  • such a biconical lens can focus the laser radiation in the beam path of a laser scanner particularly effectively. This means that When passing or hitting a large number of components of the laser scanner, there is an exact optical influencing of the laser radiation, which in turn can enable particularly defined radiation properties.
  • the property profile of the lens can be very balanced.
  • the glass body defines the focus length of the hybrid lens and that the polymer coating defines aspherical parameters.
  • the polymer coating is not a mere coating and thus roughly follows the curvature of the glass lens, but that the glass body and the polymer coating define different optical properties of the biconical lens. This can be advantageous with regard to the optical properties and in particular with regard to an effective focusing of a focusing of laser radiation when using the biconical lens when used in a laser scanner.
  • a glass body of the hybrid lens can enable particularly high stability and, in particular, long-term stability, since glass forms a very stable body and in particular has high thermal stability.
  • a hybrid lens with a vitreous body and a polymer coating can be significantly more stable and in particular has improved thermal properties than a biconical lens which is only made of a polymer.
  • the provision of the polymer coating makes it possible for the hybrid lens to have optical properties which are comparable to those of a pure glass lens, but can be produced more cost-effectively than a pure glass lens.
  • a biconical hybrid lens can combine effective focusing of laser radiation with good stability, good thermal properties and cost-effective manufacture.
  • the polymer coating can furthermore be preferred for the polymer coating to have a material which is selected from the group consisting of polyimide, polycarbonate, cyclic olefin polymers, cyclic olefin copolymers and polymethyl methacrylate.
  • these polymers can enable a preferred property profile of the biconical lens, which comprises good stability and good optical properties.
  • these polymers have a refractive index similar to that of glass, so that the laser radiation does not experience any significant deflection during the glass / polymer transition.
  • polycarbonates in particular a high thermal resistance in a range from -137 ° C. to + 124 ° C. can be allowed and, in addition, good mechanical properties can also be made possible.
  • Cyclic olefin copolymers as well as cyclic olefin polymers (COP) are a basically known class of polymers. By changing the polymer structure, such as the installation ratios of cyclic and linear olefins in the COCs, these allow their properties to be changed over a wide range. Essentially, the heat resistance is set in a range from 65 to 190 ° C. Furthermore, all COPs and COCs share a number of properties such as good thermoplastic flowability, high rigidity, strength and hardness, as well as low density and high transparency with good acid and alkali resistance.
  • the other polymers mentioned, polymethyl methacrylate and polyimide are also distinguished by high transparency and other optical properties and advantageous mechanical properties.
  • the biconical lens is designed as a Zernike lens. It has surprisingly been found that, in particular, a biconical lens, which is designed as a Zernike lens, can enable a particularly effective focusing of the laser radiation and can thus particularly effectively reduce scattered radiation and thus the risk of glare in a laser scanner.
  • a Zernike lens can be understood to mean a lens with a surface that has a Zernike surface or a surface that corresponds to a Zernike polynomial.
  • a conical surface is not, like a conventional conical lens, defined only by the radius and the conical constant, but in addition to the radius and the conical constant also by additional aspherical parameters.
  • Such lenses are generally known to the person skilled in the art and are described below purely by way of example.
  • the standard Zernike surface is defined by polynomials corresponding to flat aspherical surfaces and additionally by aspherical parameters, which are defined by the Zernike standard coefficients.
  • ai (a1 - a8) are the aspheric coefficients.
  • the present invention further relates to a laser scanner, in particular for a driving support system of a motor vehicle, comprising a laser source for emitting laser radiation along a beam path, wherein at least one lens for influencing the cross section of the laser radiation is arranged in the beam path of the laser radiation, it further being it is provided that at least one biconical lens, which is designed as a biconical hybrid lens, is arranged in the beam path of the laser radiation as a lens for influencing the cross section of the laser radiation, the biconical hybrid lens having a glass body which is provided with a polymer coating.
  • the laser scanner described here is used in particular in a
  • the laser scanner can, for example, in the front area of the vehicle or in the rear area of the
  • the laser scanner can be arranged in the front or rear bumper or in a headlight housing.
  • the driving support system which is equipped with such a laser scanner, can thus serve in particular to monitor the surroundings and, for example, warn of collisions, give driving instructions or support autonomous driving.
  • driving support systems are known in principle and are always being used.
  • Driving support system can be provided that it has a laser source for emitting laser radiation along a beam path.
  • a laser source is therefore to be understood in the sense of the present invention in particular a unit that can emit laser radiation.
  • the specific configuration of the laser source is not restricted, but the laser source can preferably be a laser diode, for example.
  • the laser source can be configured as an arrangement of a large number of laser diodes. From the laser source is accordingly
  • Laser radiation guided along a beam path runs in particular from the laser source into a detection area of the laser scanner.
  • Objects located in the detection area can reflect the laser radiation and can thus be detected by a detector, which can also be part of the driving support system.
  • the laser scanner can be configured as a LIDAR.
  • optical components are provided in the beam path of the laser scanner in a manner known per se.
  • At least one optical deflection element for deflecting the laser radiation is preferably provided in the beam path of the laser radiation, that is to say the laser radiation emitted by the laser source.
  • a deflection element is to be understood in particular to mean an element of this type which can deflect the laser radiation in the desired manner and, as such, can reflect it, for example.
  • Deflection element for example, at least one microscanner can be provided.
  • a microscanner in particular includes a MEMS scanner
  • MEMS mirror which serves to reflect the laser radiation and can thereby scan the detection area of the laser scanner by means of mobility.
  • Microscanners or MEMS mirrors are thus, in particular, microassemblies comprising an actuator motor and a mirror element. This makes it possible to set discrete angles between the negative and the positive maximum of an actuator chip
  • microscanner can be used to modulate the laser radiation, as is immediately apparent to the person skilled in the art.
  • a reflector can also be provided in front of the MEMS mirror in order to
  • a device for influencing the cross section of the laser radiation is preferably, but not limited to, arranged in the beam path of the laser radiation in front of the deflection element.
  • the cross section of the laser radiation can be set in the desired manner and thus in accordance with the desired one
  • the laser scanner described here is also designed such that in the
  • Beam path of the laser radiation as a lens for influencing the cross section of the laser radiation is arranged at least one biconical lens which is designed as a biconical hybrid lens, the biconical hybrid lens having a glass body which is provided with a polymer coating.
  • Deflection element can occur that, on the one hand, due to the divergence of the laser beam and, on the other hand, due to the effective area of the microscanner, depending on the deflection angle of the mirror, part of the laser beam is not reflected by the mirror itself, but rather by a mirror support.
  • the light reflected on the mirror carrier now emerges from the laser scanner, in particular from a housing of the laser scanner, eye safety can be limited. This is particularly so because the light reflected by the mirror carrier exits undefined and is therefore not focused in the desired manner. About this undefined emerging part of the laser radiation can be called scattered radiation. The occurrence of this scattered radiation can thus in particular reduce eye safety with regard to any that may occur
  • the above-described adaptation is particularly advantageous because the distances and the spatial geometry of the optical components are fixed in the configuration of the laser scanner, in order to reduce the diameter of the optical component
  • the scattered radiation can then be determined by measurements or computer simulation and thus counteracted by the biconical lens.
  • Laser scanner in its arrangement of the optical components to each other, for example to work with existing collimator elements or other components and thereby block the scattered radiation via the relative arrangement of the optical elements to one another, is not or only with difficulty and precisely with influencing the diameter of the beam of the laser radiation or focusing possible.
  • the biconical hybrid lens can also be advantageous for the biconical hybrid lens to be arranged in the beam path of the laser radiation immediately after the radiation source. In this embodiment, the tendency towards glare of the laser scanner can be reduced particularly effectively. Because in this embodiment, the lens is in particular in front of the
  • Deflection element and thus arranged in front of the MEMS mirror or microscanner. This makes it possible to reduce a divergent portion of the laser radiation in front of the deflecting element, so that only focused and in particular parallel laser radiation is directed onto the laser beam
  • Deflection element meets.
  • the laser radiation even before the laser radiation hits the deflection element, it is possible for the laser radiation to be arranged in such a way that it only hits the desired optical region of the deflection element and is thus reflected in a defined manner by the deflection element, such as the microscanner. This can, for example, effectively prevent laser radiation from hitting the mirror carrier of a microscanner as a deflection element and from there
  • scatter radiation can thus be effectively blocked before the deflecting element, which can reduce eye safety with regard to a possible risk of glare for people and animals.
  • the divergent portion of the laser radiation in front of the deflection element can still be comparatively small, so that the dimensions are comparatively small
  • Components can be worked as lenses. This configuration can thus, for example, in the case of small-sized laser scanners or in
  • an already provided component can also be replaced by the above-described biconical lens, such as a FAC lens, which can enable simple implementation in existing systems.
  • the radiation source has a laser diode.
  • a high long-term stability can be combined with a low tendency of the laser scanner to glare.
  • a beam can be emitted by a laser diode, which is very narrow
  • laser diodes Has beam path, so that laser radiation emanating from a laser diode already has a very low glare potential.
  • laser diodes are characterized by a long, damage-free working time, so that the
  • laser scanners have a high long-term stability.
  • a laser diode it can be made possible to provide a compact laser source. This allows such a laser scanner to be arranged well even with a small space requirement, as is often the case in particular in motor vehicles. This can also be further favored by the fact that laser diodes can be manufactured in so-called SMT technology (Surface Mount Technology). In this embodiment, the diode can be arranged directly on the circuit board, which favors a simple structure. Finally, a laser diode offers high performance, which is particularly advantageous for effective environment detection over a large area of the laser scanner.
  • the provision of the biconical lens as described above can also make it possible to enable effective focusing of the laser radiation with a balanced property profile, in particular of the biconical lens.
  • the present invention furthermore relates to a driving support system for monitoring the surroundings, in particular for a vehicle, comprising a laser scanner for emitting laser radiation and a detector for detecting laser radiation reflected from an object to be detected, the driving support system also providing a control unit for evaluating the detector Has data, the laser scanner being designed as described in detail above.
  • Such a driving support system thus serves to monitor the surroundings of a vehicle in a manner known per se.
  • objects such as people, animals or objects are to be detected thereby, for example to prevent collisions.
  • a laser scanner is provided which emits laser radiation and thus directs the objects located in the detection area of the laser scanner.
  • the laser radiation is reflected by the objects and can be detected by a detector.
  • a spatial arrangement of the objects to the vehicle and a distance measurement are possible.
  • the data in particular of the detector, can be evaluated by a control unit. This makes it possible, for example, to issue driving instructions, initiate driving interventions, such as emergency braking, or even enable fully autonomous driving.
  • the laser scanner can be problematic when emitting laser radiation that there is an increased risk of glare for people or animals located in the detection area, in particular due to scattered rays. Because the laser scanner is configured as described above, such a risk of glare can be significantly reduced. Accordingly, the eye security of the laser scanner can be improved. Furthermore, the laser scanner can have a very balanced property profile.
  • the present invention also relates to a vehicle, in particular a motor vehicle, comprising a driving support system for monitoring the surroundings of the vehicle, the driving support system being designed as described above.
  • the vehicle described here can in principle be any vehicle, such as a motor vehicle, which is to be equipped with environmental monitoring.
  • the vehicle has a driving support system with a laser scanner, in particular LIDAR, as described above in detail.
  • the vehicle has a driving support system with a laser scanner as described above, such a risk of glare can be significantly reduced.
  • the eye safety of the laser scanner can be improved accordingly.
  • the laser scanner can have a very balanced property profile.
  • Fig. 1 shows schematically the beam path of a laser scanner at a
  • FIG. 2 shows, in a schematic manner, an embodiment of a biconical lens according to the invention.
  • Fig. 3 shows schematically another view of the embodiment of Fig. 2 as a sectional view from the side.
  • FIG. 1 shows a laser scanner 10 in a schematic manner.
  • the laser scanner 10 is used, in particular, for use in a driving support system of a motor vehicle, such as a passenger car, and in particular for one
  • the laser scanner 10 serves to detect objects, such as people, animals or even objects, in the detection area of the laser scanner 10 and thereby to obtain information about the distance and the spatial position of the objects from the laser scanner 10 and thus from the vehicle. Accordingly, the laser scanner 10 can serve to issue warnings when there is a risk of a collision, or also to issue driving instructions,
  • the laser scanner 10 comprises a laser source 12, such as a laser diode or a plurality of laser diodes, which is designed to emit laser radiation 14.
  • the laser radiation 14 runs in a beam path which is defined or influenced by optical elements arranged in it.
  • the laser scanner has, for example, a microscanner 16 as a deflection element, to which the laser radiation is directed, for example by a reflector 15.
  • the microscanner 16 comprises an in particular movable mirror 18 around which To direct laser radiation 14 in the desired manner into the detection range of laser scanner 10 or to modulate laser radiation 14.
  • the mirror 18 is arranged on a mirror carrier 20.
  • an optical lens 22 is provided in the beam path of the laser radiation 14 as a device for influencing the cross section of the laser radiation 14. Following the beam path of the laser radiation 14, the lens 22 is arranged immediately after the laser source 12.
  • the lens 22 is designed as a biconical hybrid lens 24, the biconical hybrid lens 24 having a glass body 26 which is provided with a polymer coating 28.
  • the lens 22 is designed as a biconical hybrid lens 24, a more complicated configuration comprising a FAC collimator element and an SAC collimator element can be dispensed with, which significantly simplifies the construction. Because the biconical hybrid lens can already focus the laser radiation in a horizontal plane as well as in a vertical plane.
  • the lens 22 As a biconical hybrid lens 24, the biconical hybrid lens 24 having a glass body 26 which is provided with a polymer coating 28, as described above.
  • a prism 30 is provided in the radiation direction behind the microscanner 16, from which the laser radiation 14 can radiate into the detection area of the laser scanner 10. If the laser radiation 14 is reflected by an object to be detected, it arrives at a detector, not shown
  • FIG. 2 shows the biconical hybrid lens 24 in a larger view. It can be seen here that the biconical hybrid lens 24 has a first curvature 32 in a first plane and furthermore has a second curvature 34 in a second plane arranged at right angles to the first plane.
  • the biconical hybrid lens 24 influences the laser radiation 14 in such a way that it is focused and in particular has no or only a very limited diverging component.
  • FIG. 3 also shows a cross section through the biconical hybrid lens 24. It is shown that the biconical hybrid lens 24 has a glass body 26 which is provided with a polymer coating 28. In particular, in combination with FIG. 2, it is indicated that the glass body 26 defines the focal length of the biconical hybrid lens 24 and that the polymer coating 28 defines aspherical parameters of the biconical hybrid lens 24. In particular, the biconical lens is designed as a Zernike lens.
  • the polymer coating 28 is formed from a material that is selected from the group consisting of polyimide, polycarbonate, cyclic olefin polymers, cyclic olefin copolymers and polymethyl methacrylate.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

La présente invention concerne une lentille optique pour un dispositif de balayage laser (10), la lentille optique (22) étant réalisée sous forme de lentille biconique, la lentille biconique étant réalisée sous forme de lentille hybride biconique (24), la lentille hybride biconique (24) comportant en outre un corps de verre (26) qui est pourvu d'un revêtement polymère (28). La présente invention concerne en outre un dispositif de balayage laser (10) qui comporte une telle lentille hybride biconique (24).
PCT/EP2019/072426 2018-08-28 2019-08-22 Lentille optique pour un dispositif de balayage laser pour un système d'assistance de conduite WO2020043579A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018120925.8 2018-08-28
DE102018120925.8A DE102018120925A1 (de) 2018-08-28 2018-08-28 Optische Linse für einen Laserscanner für ein Fahrunterstützungssystem

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Publication Number Publication Date
WO2020043579A1 true WO2020043579A1 (fr) 2020-03-05

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PCT/EP2019/072426 WO2020043579A1 (fr) 2018-08-28 2019-08-22 Lentille optique pour un dispositif de balayage laser pour un système d'assistance de conduite

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WO (1) WO2020043579A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117543320A (zh) * 2024-01-10 2024-02-09 四川中久大光科技有限公司 紧凑化激光输出方法、激光输出头和激光器件

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US20170059838A1 (en) 2015-08-25 2017-03-02 Rockwell Automation Technologies, Inc. Modular illuminator for extremely wide field of view
US20170108582A1 (en) 2015-10-15 2017-04-20 Azbil Corporation Photoelectric sensor

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Publication number Priority date Publication date Assignee Title
EP2706377A1 (fr) * 2012-09-06 2014-03-12 Fujitsu Limited Appareil et procédé de détection dýobjet
US20170059838A1 (en) 2015-08-25 2017-03-02 Rockwell Automation Technologies, Inc. Modular illuminator for extremely wide field of view
US20170108582A1 (en) 2015-10-15 2017-04-20 Azbil Corporation Photoelectric sensor

Non-Patent Citations (1)

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Title
VALENTIA DOUSHKINA: "Advantages of Polymer and Hybrid Glass-Polymer Optics", PHOTONICS MEDIA, 1 April 2010 (2010-04-01), pages 1 - 7, XP055639525, Retrieved from the Internet <URL:https://www.photonics.com/Articles/Advantages_of_Polymer_and_Hybrid_Glass-Polymer/a41974> [retrieved on 20191106] *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117543320A (zh) * 2024-01-10 2024-02-09 四川中久大光科技有限公司 紧凑化激光输出方法、激光输出头和激光器件

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