WO2017005653A1 - Module détecteur pour un dispositif de détection optique - Google Patents

Module détecteur pour un dispositif de détection optique Download PDF

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Publication number
WO2017005653A1
WO2017005653A1 PCT/EP2016/065581 EP2016065581W WO2017005653A1 WO 2017005653 A1 WO2017005653 A1 WO 2017005653A1 EP 2016065581 W EP2016065581 W EP 2016065581W WO 2017005653 A1 WO2017005653 A1 WO 2017005653A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical
detector
sensor device
detector unit
optical sensor
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.)
Ceased
Application number
PCT/EP2016/065581
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German (de)
English (en)
Inventor
Lin Lin
Peter Horvath
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.)
Valeo Schalter und Sensoren GmbH
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 WO2017005653A1 publication Critical patent/WO2017005653A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • G01S7/4816—Constructional features, e.g. arrangements of optical elements of receivers alone

Definitions

  • the invention relates to a detector unit for an optical sensor device, for detecting at least one optical received signal, with an optical
  • the invention also relates to an optical sensor device with such a detector unit and to a motor vehicle with such a detector unit or such an optical sensor device.
  • optical sensor devices are known in which surfaces or bodies in a vicinity of the sensor device and thus of the motor vehicle are swept line or raster-like with a light beam in order to measure the respective surfaces or bodies, to process and / or to produce an image. This can be done, for example, in a laser scanning device by a laser light beam.
  • Laser scanning devices are also known as “laser scanners” or as “lidars”. In these sensor devices come accordingly both transmitting units and
  • Detector units are used. In conventional detector units, lights which are mostly reflected by the surroundings are directed to detection elements with individual pixels, for example so-called avalanche or avalanche photodiodes. These individual pixels or pixels usually also absorb light, for example sunlight, from other directions.
  • DE 10 2012 101 460 A1 discloses a lidar sensor for a
  • the sensor has several components
  • Reception areas each associated with a detector.
  • a detector unit according to the invention for an optical sensor device is designed to detect at least one optical received signal.
  • the optical sensor device may be an active optical sensor device in which a transmission signal is emitted into an environment of the sensor device and a reflection of this transmission signal as a received signal by the detector unit of the optical sensor device detected and finally, for example by the
  • Detector unit or a computing unit is evaluated.
  • Such an optical sensor device may be a light scanning device, in particular a laser scanning device or a laser scanner.
  • the detector unit in this case comprises an optical collimation element for collimating the at least one optical received signal and a detection element for detecting the collimated optical received signal.
  • the detection element is at least partially, so partially or completely, arranged in a focal plane of the Kollimationsiatas. Collimating can also be used here as bundling or focusing the optical
  • Detection element at least two detector surfaces with pixel fields, which are also known as "pixel arrays.” In each pixel of the pixel fields, a signal is individually detectable here
  • the detector surfaces are at least partially, ie partially or completely, not parallel to one another.
  • the detector surfaces can thus be tilted against each other, for example.
  • the pixel fields each have a plurality of pixels or pixels, in each of which an optical signal, for example the optical received signal, is converted into an electrical signal.
  • the detector unit or the optical sensor device with the detector unit which then includes, for example, a corresponding transmitter unit, can be designed such that each pixel can only receive signals from a very small solid angle range and thus convert it into an electrical signal.
  • a noise which, for example, a scattered light of a further optical reception signal or caused by other lights such as sunlight avoided.
  • a low signal-to-noise ratio is achieved.
  • the demands on the optical collimation element decrease due to the differently oriented detector surfaces.
  • the detector surfaces may comprise a particularly large number of pixels in order to realize a high resolution and yet be arranged in each case in the focal plane of the collimation element.
  • the focal plane of the Kollimations may also be curved.
  • Such a curvature is an effect which, as is known, becomes visible, for example in the case of converging lenses, when a light strikes the lens at a very large angle of incidence with respect to solder on a principal plane of the respective lens.
  • an optical received signal can be imaged sharply and correspondingly high-resolution onto the respective pixels of the detector surfaces. Due to the different orientation of the
  • Detector surfaces can thus collimation errors at least partially, so be compensated in whole or in part. It can be achieved in one direction, for example in a horizontal direction, a particularly high resolution by multiple detector surfaces can be strung together.
  • the detector surfaces each have non-curved flat surfaces (or are not curved flat surfaces), which are tilted against each other.
  • a non-curved flat surface lies completely in a plane which is spanned by two vectors, which are mathematically independent of each other, ie non-parallel.
  • the detection sides of the detector surfaces facing the optical collimator element enclose an angle in a predetermined plane which is smaller than 180 °.
  • the flat surfaces are thus non-parallel surfaces.
  • the predetermined plane can stand in particular perpendicular to the two surfaces.
  • Total detector area forms, which has no gaps. Accordingly, the at least one optical received signal from the surroundings of the detector unit can thus be detected without gaps, without requiring complex optical constructions.
  • Detector surfaces have normal vectors, which in the horizontal plane all parallel to each other. Accordingly, then the detector surfaces only in one plane, here the horizontal plane, inclined to each other. This has the advantage that the at least one optical received signal can be detected from a particularly large angular range in the horizontal plane.
  • the collimating element comprises at least two optical lenses, whose main optical planes lie in planes not parallel to one another, wherein in each case one detector surface is arranged in a focal plane of the respective associated optical lens.
  • the inclination (or angle) of the principal planes to each other corresponds to the inclination (or angle) of the detector surfaces to each other.
  • the collimation element has only one main optical plane or only mutually parallel extending main optical planes.
  • the collimation element here can have only one optical lens or a plurality of optical lenses with main planes parallel to one another.
  • the detection element with the differently oriented detector surfaces is particularly advantageous because so inevitably in a large
  • Incident angle of the optical signal received on the Kollimationselement occurring effects which manifest themselves in a curvature of the focal plane are compensated particularly effective, thus, even at a large angle of incidence, which is associated with a large detection range, by the Kollimationselement an accurate collimation of the optical received signal to the respective detection element take place.
  • a high resolution is achieved. From the high resolution, as described above, a favorable signal-to-noise ratio is derived, since with a plurality of pixels with a small receiving range (also known as field of view, FOV) less noise is detected by each pixel.
  • FOV field of view
  • the detector surfaces are arranged at least partially or partially in the focal plane of the Kollimationsiatas.
  • the focal plane can here just in an edge region, in which at a large angle of incidence of the optical reception signal, the optical received signal is collimated, be curved.
  • the detector surfaces can therefore be arranged at least partially in a curved region of the focal plane of the collimation element.
  • a curved region of the focal plane is to be understood here in particular as the region of the focal plane in which the curvature is no longer negligible without an optical error being greater than a predefined limit value. This has the advantage that through the
  • a large detection range for the detector unit is achieved.
  • the optical errors for example a blur or a curvature of the focal plane, are particularly pronounced, so that the different orientation of the detector surfaces is particularly advantageous here.
  • Detector unit comprises three or more detector surfaces and adjacent detector surfaces are each oriented at a predetermined angle to each other. Two detector surfaces are considered adjacent here if they are nearest neighbors. They can also be adjacent or abut. They then in particular each include an angle, the predetermined angle.
  • the predetermined angle is in particular between 130 ° and 150 °, preferably 140 °. If the detector surfaces are understood as oriented surfaces, angular amounts of between 210 ° and 230 ° are, in addition to the stated angular amounts, depending on the definition of the associated angles
  • the detection area may cover a vertical angle of 12 °.
  • Detector surfaces are two-dimensional pixel fields.
  • they may be non-square pixel fields which have more than one pixel in a vertical direction which is perpendicular to the horizontal plane and a multiple of the pixels of the vertical direction in a horizontal direction perpendicular to the vertical direction in the horizontal plane.
  • the multiple does not have to be an integer multiple here.
  • the detector surfaces may each have 400 pixels or pixels in the horizontal direction and 120 pixels or pixels in the vertical direction.
  • a spatial resolution of 0.1 ° x 0.1 ° can be achieved. This has the advantage that a particularly high resolution is achieved. Due to the fact that the detector surfaces are oriented differently, the respective pixel fields can, however, at least partially in one
  • Burning plane of the Kollimations may be arranged so that an accurate
  • Kollimationselement received signals from a horizontal angle range of 90 ° or more, in particular of less than 150 ° to the focal plane of the
  • Optical reception signals from an angular range of 120 ° may be collimated onto the focal plane of the collimation element.
  • optical reception signals from a predetermined vertical angle range for example an angle range between 10 ° and 20 °, preferably 12 °, can also be collimated by the collimation element onto the focal plane of the collimation element. This has the advantage of being a great one
  • the invention also relates to an optical sensor device with a detector unit according to one of the preceding claims.
  • the advantages arise accordingly.
  • the optical sensor device also has a transmitting unit.
  • the transmitting unit comprises for emitting at least one transmission signal at least two independently activatable transmitting elements, which are each associated with the detector elements. The from an environment of the optical sensor device.
  • Sending elements are serially exclusively activated, so that arrives in different detector units or different pixels of the detector units at the same time always only the respective transmission signal corresponding received signal or corresponding part of the received signal. This is a "crosstalk", which by overshooting the different transmission signals in different
  • SNR signal-to-noise ratio
  • the transmitting units are each designed to emit a respective associated transmission signal in a horizontal angle range of 40 ° or less.
  • the optical sensor device can here in particular comprise three or more transmission units.
  • the invention also relates to a motor vehicle with a detector unit according to one of the described embodiments or with an optical sensor device as described in the last paragraphs.
  • Fig. 1 is a schematic perspective view of a first exemplary
  • Embodiment of a detector unit Embodiment of a detector unit.
  • FIG. 1 shows a schematic perspective view of an exemplary embodiment of a detector unit 1.
  • the detector unit 1 comprises an optical collimation element 2 and a detection element 3.
  • the detection element 3 comprises several, in the present case three, detector surfaces 4a, 4b, 4c. These detector surfaces 4a, 4b, 4c are embodied here as flat and rectangular and comprise a multiplicity of
  • Pixels or pixels arranged in the form of pixel fields are not shown here for reasons of clarity.
  • the present three detector surfaces 4a, 4b, 4c are all perpendicular to a horizontal plane, which corresponds to the x-z plane in the drawing.
  • the planes are in each case tilted by a predetermined angle a, which in the example shown is 120 °.
  • the respective adjacent detector surfaces 4a, 4b; 4b, 4c thus each include the predetermined angle ⁇ .
  • Detector surfaces 4a, 4b, 4c in another embodiment, which is not shown to be spaced apart.
  • the detector surfaces 4a, 4b, 4c are then in a respective plane, which intersects with the plane of the respectively adjacent detector surface 4a, 4b, 4c at the predetermined angle ⁇ .
  • the collimating element 2 in the present case comprises a single lens 5, which is also arranged with its main plane perpendicular to the horizontal plane.
  • several light bundles 6a, 6b and 6c are also drawn. These have the form of vertical light bands in the selected representation, which are each parallel to the
  • Each of the three vertical light bundles 6a, 6b, 6c is in the present case with light of a different wavelength, in particular laser light of a respective one predetermined, of the other light beams 6a, 6b, 6c different wavelength shown and executed.
  • the vertical light bundles 6a, 6b, 6c thereby encounter the collimating element 2 at a respective angle of incidence ⁇ .
  • the angle of incidence ⁇ is defined as the angle between a perpendicular L on the main plane of the collimating lens 5 and the respective light beam of the light beam 6a, 6b, 6c.
  • the angle of incidence ⁇ for the two light bundles 6a and 6c is identical and is 40 °.
  • the middle light beam 6b strikes the lens 5 exactly perpendicularly, ie at an angle of .beta. Equal to 0.degree.
  • the light beams 6a, 6b, 6c in the present case comprise the at least one optical received signal.
  • the optical received signal may also be only individual rays of the illustrated light bundles 6a, 6b, 6c.
  • the illustrated light bundles 6a, 6b, 6c can also be a temporally integrated representation of the respective optical signals received at different times. At one time, only one light beam of the respective light beam 6a, 6b, 6c would then be present.
  • the optical signals which are symbolized here by the light bundles 6a to 6c, are imaged by the lens 5 as a collimating element 2 onto a focal plane 7 of the collimation element 2.
  • This focal plane 7 is curved in the example shown. Due to the different orientations of the detector surfaces 4a, 4b, 4c, which are also visualized by the respective associated normal vectors 8a, 8b, 8c, one or more optical received signals can be detected by the detector unit 1 from a large area of an environment 9 of the detector unit 1 , Since the respective detector surfaces 4a, 4b, 4c are arranged in the focal plane 7, and moreover have a multiplicity of pixels in the pixel fields, a particularly high resolution can thus be achieved.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

L'invention concerne un module détecteur (1) pour un dispositif de détection optique, destiné à détecter au moins un signal de réception optique, lequel module comprend un élément de collimation optique (2) pour collimater ledit signal de réception optique, ainsi qu'un élément de détection (3) pour détecter le signal de réception optique collimaté, cet élément de détection (3) étant agencé au moins en partie dans un plan focal (7) de l'élément de collimation (2). Selon l'invention, l'élément de détection (3) présente au moins deux surfaces de détection (4a, 4b, 4c) comportant des champs de pixels, ces surfaces de détection (4a, 4b, 4c) étant orientées différemment au moins par endroits de sorte que l'on puisse obtenir pour un dispositif de détection optique une couverture étendue et une résolution élevée simultanément avec un faible rapport signal/bruit.
PCT/EP2016/065581 2015-07-03 2016-07-01 Module détecteur pour un dispositif de détection optique Ceased WO2017005653A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015110767.8A DE102015110767A1 (de) 2015-07-03 2015-07-03 Detektoreinheit für eine optische Sensorvorrichtung
DE102015110767.8 2015-07-03

Publications (1)

Publication Number Publication Date
WO2017005653A1 true WO2017005653A1 (fr) 2017-01-12

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PCT/EP2016/065581 Ceased WO2017005653A1 (fr) 2015-07-03 2016-07-01 Module détecteur pour un dispositif de détection optique

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DE (1) DE102015110767A1 (fr)
WO (1) WO2017005653A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018133302A1 (de) 2018-12-21 2020-06-25 Valeo Schalter Und Sensoren Gmbh Optische Vorrichtung und optische Sensoreinrichtung mit einer solchen Vorrichtung und Kraftfahrzeug mit einer solchen optischen Sensoreinrichtung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107153199A (zh) * 2017-03-23 2017-09-12 深圳市速腾聚创科技有限公司 激光雷达及激光雷达控制方法
EP4446778A1 (fr) * 2023-04-12 2024-10-16 Centre National de la Recherche Scientifique Dispositif d'imagerie lidar amélioré

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5510273A (en) * 1995-04-03 1996-04-23 Xerox Corporation Process of mounting semiconductor chips in a full-width-array image
US6791072B1 (en) * 2002-05-22 2004-09-14 National Semiconductor Corporation Method and apparatus for forming curved image sensor module
DE102005006922A1 (de) * 2005-02-16 2006-08-24 Conti Temic Microelectronic Gmbh Vorrichtung zur Erfassung von Objekten in einem großen Winkelbereich
US20100103300A1 (en) * 2008-10-24 2010-04-29 Tenebraex Corporation Systems and methods for high resolution imaging
US20130075849A1 (en) * 2011-09-27 2013-03-28 Kabushiki Kaisha Toshiba Solid state imaging device, solid state imaging element, portable information terminal device and method for manufacturing the solid state imaging element
DE102012101460A1 (de) 2012-02-23 2013-08-29 Conti Temic Microelectronic Gmbh Vorrichtung zur Erfassung von Umgebungsobjekten
US8836922B1 (en) * 2013-08-20 2014-09-16 Google Inc. Devices and methods for a rotating LIDAR platform with a shared transmit/receive path

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5510273A (en) * 1995-04-03 1996-04-23 Xerox Corporation Process of mounting semiconductor chips in a full-width-array image
US6791072B1 (en) * 2002-05-22 2004-09-14 National Semiconductor Corporation Method and apparatus for forming curved image sensor module
DE102005006922A1 (de) * 2005-02-16 2006-08-24 Conti Temic Microelectronic Gmbh Vorrichtung zur Erfassung von Objekten in einem großen Winkelbereich
US20100103300A1 (en) * 2008-10-24 2010-04-29 Tenebraex Corporation Systems and methods for high resolution imaging
US20130075849A1 (en) * 2011-09-27 2013-03-28 Kabushiki Kaisha Toshiba Solid state imaging device, solid state imaging element, portable information terminal device and method for manufacturing the solid state imaging element
DE102012101460A1 (de) 2012-02-23 2013-08-29 Conti Temic Microelectronic Gmbh Vorrichtung zur Erfassung von Umgebungsobjekten
US8836922B1 (en) * 2013-08-20 2014-09-16 Google Inc. Devices and methods for a rotating LIDAR platform with a shared transmit/receive path

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018133302A1 (de) 2018-12-21 2020-06-25 Valeo Schalter Und Sensoren Gmbh Optische Vorrichtung und optische Sensoreinrichtung mit einer solchen Vorrichtung und Kraftfahrzeug mit einer solchen optischen Sensoreinrichtung

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Publication number Publication date
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