WO2023134818A1 - Système optique et véhicule ayant au moins un système optique - Google Patents

Système optique et véhicule ayant au moins un système optique Download PDF

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Publication number
WO2023134818A1
WO2023134818A1 PCT/DE2022/200287 DE2022200287W WO2023134818A1 WO 2023134818 A1 WO2023134818 A1 WO 2023134818A1 DE 2022200287 W DE2022200287 W DE 2022200287W WO 2023134818 A1 WO2023134818 A1 WO 2023134818A1
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WO
WIPO (PCT)
Prior art keywords
housing part
optical
optical system
compensation element
lever
Prior art date
Application number
PCT/DE2022/200287
Other languages
German (de)
English (en)
Inventor
Ulrich Schaub
Tim Kreiser
Thomas Bopp
Original Assignee
Continental Autonomous Mobility Germany 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 Continental Autonomous Mobility Germany GmbH filed Critical Continental Autonomous Mobility Germany GmbH
Publication of WO2023134818A1 publication Critical patent/WO2023134818A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/008—Mountings, adjusting means, or light-tight connections, for optical elements with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/028—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation

Definitions

  • the invention relates to an optical system, in particular for a vehicle, and to a vehicle, in particular a motor vehicle, with at least one such optical system.
  • optical lens systems are usually mounted either permanently on a camera housing or as an interchangeable lens by means of a high-precision bayonet.
  • the usually rectangular image sensor is installed in the camera housing and, for a high quality of the camera image in all spatial directions, must be precisely aligned with the optics, which are usually designed to be rotationally symmetrical. Longitudinal adjustment and perpendicular orientation to the optical axis are of great importance for constant image sharpness.
  • High-quality automotive cameras usually have an intrinsically calibrated and, after calibration, fixed and gas-tight system consisting of a housing with an image sensor and a lens body with a lens system. The effects of temperature expansion are measured and the systems are designed in such a way that tolerable, negative quality effects can be maintained in the required range.
  • the present invention therefore creates an optical system, in particular for a vehicle, comprising: an optical device which has a first housing part with an optics receptacle in which an optical component is accommodated, the first housing part having a first coefficient of thermal expansion having; a compensation element received in the first housing part and having a second coefficient of thermal expansion that is greater than the first coefficient of thermal expansion; a detection device which has a second housing part with a detection device accommodated therein for detecting the radiation transmitted by the optical component, the first housing part with its optical mount and the optical component and the second housing part with the detection device being connected to one another in the longitudinal direction, wherein the first housing part is designed with a lever arrangement which can be actuated by the compensation element in such a way that when the first housing part expands by an amount in the longitudinal direction due to a temperature increase, the lever arrangement pushes the first housing part in the opposite direction in the longitudinal direction, preferably by the same amount or in the essentially the same amount.
  • the invention therefore creates an optical system, in particular for a
  • the invention makes it possible to use a lever arrangement and a compensation element to equalize or compensate for temperature increases and the associated expansion of the housing part with the optical component, so that image acquisition in an optical system, such as an optical lens system with an image sensor, is not impaired and in particular is maintained geometrically at optimum quality over a wide temperature range.
  • the optical component accommodated in the optics receptacle and the detection device are arranged on a common longitudinal axis, in particular the optical axis.
  • the optical component has a predetermined detection distance in the longitudinal direction from the detection device. This detection distance is preferably chosen in such a way that an optimal image sharpness can be achieved in the case of an image sensor as the detection device.
  • the optical component is a lens, a mirror, a prism and/or an optical grating.
  • the detection device is an image sensor.
  • image sensors are used in particular in the automotive sector for object detection, etc.
  • the predetermined detection distance corresponds to the image distance, in particular the image distance at a predetermined reference temperature.
  • the image distance is selected, for example, with an image sensor (engl. Imager) as a detection device and is additionally selected or determined, for example, as a function of a desired target or reference temperature, in which the optical system is preferably used, for example.
  • the lever arrangement has a lever section and a base joint about which the lever section can be rotated.
  • the lever portion has a first lever arm and a second lever arm. The first lever arm is connected to the optical mount and the second lever arm is connected or coupled to the compensation element.
  • Such a lever arrangement can be formed very simply in one piece or integrally in a housing or, in this case, a housing part.
  • the base joint can, for example, be designed as a film hinge or be formed in the housing part. This is particularly simple and inexpensive to produce.
  • film hinges allow optical systems, in particular camera systems with lenses, to be produced in a gas-tight manner, which is usually necessary in automotive applications.
  • the length of the first lever arm and the length of the second lever arm are selected in such a way that the amount by which the first housing part expands in the longitudinal direction due to a temperature increase and the amount by which the lever arrangement expands the first housing part moved in the opposite direction by the pressure of the compensation element on the second lever arm, cancel each other out.
  • the length of the lever arms and thus their connection to the optics mount and the compensation element can be adapted very easily to the respective application and varied if necessary.
  • the lever ratios, in particular the length of the first and second lever arms can be freely and continuously adjusted and varied over a wide range. Due to the targeted adjustability of the lever ratios, fine compensation is possible in the optical system, in particular in the form of a camera system with a lens.
  • the first housing part has an additional joint for rotating the lever section of the lever arrangement.
  • the additional joint is provided on the first housing part, in particular between the optics mount for the optical component and the first lever arm.
  • the additional joint is a very simple way to ensure the rotatability of the lever portion in the first housing part.
  • the first housing part and/or the compensation element are made of metal and/or plastic.
  • the first housing part and the compensation element are produced, for example, as a multi-component injection molded part, e.g. as a two-component injection molded part.
  • An injection molded part is simple and inexpensive to manufacture and different plastics can be combined with one another.
  • the first housing part can be made of metal and, for example, the compensation element can be made of plastic or another metal, each with a larger coefficient of thermal expansion than the first housing part.
  • the first housing part has a compensation element receptacle in which the compensation element is received opposite the second lever arm, in particular opposite the second lever arm in the longitudinal direction of the first housing part.
  • the second lever arm has a support, in particular a projection, for supporting the compensation element.
  • the support has the advantage that the lever section provides a defined support for the compensation element.
  • the compensation element is a closed ring, which is arranged opposite the longitudinal axis of the first housing part and the second lever arm for actuating the lever arrangement.
  • a closed ring is particularly simple and inexpensive to manufacture and easy to assemble.
  • the compensation element in the form of at least one or more blocks is arranged opposite one another around the longitudinal axis of the first housing part and the second lever arm for actuating the lever arrangement. In the case of several blocks, these are provided, for example, distributed regularly or evenly around the longitudinal axis. Several blocks have the advantage that they can easily be fitted from the inside in the case of a first housing part, eg made of metal etc.
  • the base joint and/or the additional joint are designed as a film hinge, in particular as a closed film hinge.
  • a film hinge is particularly easy to manufacture, both in the case of a first housing part made of plastic and metal.
  • a film hinge can be closed and thus sealed, in particular liquid-tight, e.g. watertight, and/or gas-tight, so that no contaminants can penetrate through the joint into the first housing part.
  • the first housing part has a housing part connection, in particular a flange, for connecting the first housing part with its optics receptacle and the optical component and the second housing part with the detection device to one another in the longitudinal direction.
  • the first housing part can be attached to an associated opening of the second housing part, for example on the inside or outside of the second housing part.
  • FIG. 1 shows a schematic representation of the principle of the optical system according to the invention, consisting of an optical device and a detection device; and
  • FIG. 2 shows a schematic sectional view of an exemplary embodiment of the optical system according to the invention as shown in FIG. 1, and
  • Fig. 3 shows a schematic view of the lever portion of the optical system and the compensation element according to Fig. 2.
  • FIG. 1 shows a schematic and greatly simplified representation of the principle of the optical system 1 according to the invention, consisting of an optical device 2 and a detection device 3 . More precisely, a section of the system 1 according to the invention is shown in FIG. 1 .
  • the optical device 2 has an optical component 4 and a first housing part 5 with an optical mount 6 for receiving and fastening the optical component 4 and a housing part connection 7 for fastening of the first housing part 5 to a further housing part.
  • the optical component 4 is, for example, at least one lens 8, as shown in FIG. 1 and subsequent FIG. 2, but without being limited thereto.
  • the detection device 3 in turn has a second housing part 9 in which a detection device 30 is accommodated, as shown in FIG. 2 below.
  • the second housing part 9 of the detection device 3 is connected to the housing part connection 7 of the first housing part 5 and the two housing parts 5, 9 are thus fastened to one another.
  • the detection device 30 is designed in such a way that it detects the radiation transmitted by the optical component 4 .
  • the detection device 30 is, for example, an image sensor (engl. Imager) 10, but without being limited thereto.
  • the optical component, 4 eg lens 8, in the first housing part 5 and the detection device 30, eg image sensor (engl. Imager) 10, in the second housing part 9, are on a common longitudinal axis 11, in particular the optical axis 12 arranged.
  • the optical component 4 in the first housing part 5 has a predetermined detection distance from the detection device 30 in the second housing part 9 in the longitudinal direction.
  • the predetermined detection distance of the optical component 4 in the first housing part 5 from the detection device 30 in the second housing part 9 is chosen such that the detection device 30 detects the radiation, e.g. light rays, transmitted by the optical component 4 to a predetermined extent, e.g. in a predetermined Accuracy or image sharpness, in particular at a predetermined temperature or reference temperature, e.g. an ambient temperature at which the optical system is mainly or preferably operated.
  • the detection distance 31 does not necessarily have to correspond to the image distance.
  • a lens with a fixed focal length as an example of an optical component simply has a predetermined detection distance from the detection device 30, here from the image sensor 10 and in particular its sensor surface, in which it images sharply.
  • the specified or defined detection distance of the optical component 4, e.g. the lens 8, from the detection device 30, e.g. image sensor 10 can be selected depending on a desired or predefined detection quality, e.g.
  • This detection distance 31 is kept constant in a predetermined temperature range by means of a lever arrangement described below and an associated compensation element.
  • the light 13 incident from the outside passes through the lens 8 as the optical component 4 and is then detected by the detection device 30 in the second housing part 9 .
  • the optical axis 12 in FIG. 2 is the straight line perpendicular to the lens plane through the center of the lens.
  • the detection distance 31 between the lens 8 as the optical component 4 and the detection device 30, here image sensor 10 is selected in such a way that the detection device 30 detects the light beams 13 transmitted by the lens 8, e.g. in a predetermined detection quality, in particular image sharpness , can capture.
  • a distance required for the function or more precisely the detection quality, here detection distance 31, between the optical component, e.g. the lens 8, and the detection device 30, e.g. image sensor 10, is specified or defined and kept constant over a predetermined temperature range. According to the invention, this is achieved by the lever arrangement and the compensation element, which are described in detail below.
  • Temperature fluctuations can be compensated for by the interaction of the lever arrangement and the compensation element, and the predetermined detection distance 31 of optical component 4 and detection device 30 can thereby be kept constant in a predetermined or desired temperature range, e.g. a nominal or operating temperature range.
  • the first housing part 5 of the optical device 2 of the system 1 has a lever arrangement 14 with a compensation element 15.
  • the lever arrangement 14 and the compensation element 15 are provided or formed between the optics mount 6 and the housing part connection 7 on the first housing part 5 .
  • Housing part 5 of the optical device 2 prevent that when the first Housing part 5 with its optics receptacle 6 expands due to a temperature increase, the predetermined detection distance 31 of the optical component 4 in the first housing part 1 in relation to the detection device 3 in the second housing part 9 changes, for example increases in the exemplary embodiment in Fig. 2, or alternatively reduced (not shown).
  • an increase in the detection distance 31 between the optical component 4 and the detection device 30 has the effect that the radiation transmitted by the optical component 4 can no longer be detected by the detection device 30 to the predetermined extent, here for example the sharpness of the image. Instead, the detection distance increases and no longer corresponds, as intended, to the predetermined detection distance, here, for example, the image width.
  • the detection device 30 for example an image sensor 10 can only detect the image of the lens 8 insufficiently, in particular blurred.
  • the detection distance 31 can be kept constant over a predetermined temperature range, in particular the nominal or operating temperature range, by means of the lever arrangement according to the invention and the associated compensation element.
  • the detection distance 31, which is selected depending on the desired sharpness of the image, for example can be kept constant over the nominal or operating temperature range of the optical system. This is particularly advantageous when using such an optical system as a fixed-focus camera, since fixed-focus cameras themselves do not have a focusing device that would otherwise compensate for changes in the detection distance.
  • the lever arrangement 14 therefore has a lever section 16 with a base joint 17 about which the lever section 16 can be rotated or pivoted, as indicated by an arrow FB in FIG.
  • the lever section 16 forms a first lever arm 18 with the optics mount 6 around the base joint 17.
  • the lever section 16 forms a second lever arm 19 with the compensation element 15 around the base joint 17.
  • the first housing part 5 with its optics receptacle 6 for the optical component 4 consists of a first material with a first coefficient of thermal expansion aA.
  • the compensation element 15 in turn consists of a second material with a second coefficient of thermal expansion aB, the second coefficient of thermal expansion aB being greater than the first coefficient of thermal expansion aA. Accordingly, the compensation element 15 expands in the longitudinal direction and thus along the longitudinal axis 11, here the optical axis 12, in Fig. 1 and subsequent Fig. 2, when the temperature increases more than the first housing part 5 with the optics mount 6.
  • the compensation element 15 lengthens in the longitudinal direction and correspondingly presses on the second lever arm 19 of the lever section 16, as indicated by the arrow FB in FIG. 1, in order to actuate the lever section 16.
  • the lever section 16 is rotated about the base joint 17 and the pressure exerted by the compensation element 15 causes the second lever arm 19 to move by the amount AB in the longitudinal direction in the direction of the optics mount 6, while the first lever arm 18 moves with the optics mount 6 for the optical component 4 is moved in the opposite direction, i.e. in the direction of the detector 30, by the amount AA in the longitudinal direction.
  • the length L of the first housing part 5 thus changes, even if there is an increase in temperature, since this can be equalized or compensated for by the lever arrangement 14 and the compensation element 15 .
  • an additional joint 20 is provided between the optics mount 6 for the optical component 4 and the first lever arm 18 .
  • This additional joint 20 enables the first lever arm 18 to be rotated about the base joint 17 with the second lever arm 19 .
  • a completely rigid connection of the optics receptacle 6 with its optical component 4 a likewise rigid lens 8, with the first lever arm 18 of the lever section 16, the first lever arm 18 could not move or only move insufficiently. Instead, without the auxiliary joint 20, the base joint 17 and lever portion 16 could be damaged as the compensating element 15 expands and presses on the second lever arm 19.
  • the first housing part 5 is connected with its housing part connection 7 to the second housing part 9 and fastened to it.
  • the housing part connection 7 in Figures 1 and 2 is greatly simplified, purely schematic and only as an example.
  • the compensation element 15 is arranged in the first housing part 5 in such a way, as indicated in FIGS. 1 -3, that when it expands due to a temperature increase, it presses on the lever section 16 and more precisely its second lever arm 19 and this around the base joint 17 can rotate.
  • the compensation element 15 can also be arranged and coupled to the lever arrangement in such a way that, instead of applying pressure to the associated lever arm 16, it exerts a pull on the lever arm 16 of the lever arrangement.
  • the compensation element 15 is connected to the first housing part in such a way that it is pretensioned against the first housing part.
  • the compensation element 15 is connected to the first housing part in such a way that the first housing part springs back and thus always keeps the compensation element under compressive stress.
  • the compensation element 15 can be accommodated in a compensation element receptacle 21 of the first housing part 5 in the greatly simplified illustration in FIG. 1 and subsequent FIG. 2 and fixed therein as a separate component (with one end), eg glued with the end in the receptacle , Clamped, latched and/or welded, etc., or formed in one piece with this, for example as a two-component injection-molded part made of plastic.
  • the other or free end of the compensation element 15 bears against a support 27 of the associated second lever arm 19 in FIGS.
  • the support 27 of the second lever arm 19 is described in more detail below.
  • the compensation element 15 can, for example, be a continuous ring, as indicated in Fig. 1 and the following Figs. 2 and 3, or be composed of several, e.g. arcuate, sections (not shown) which, preferably regularly, wrap around the lever section 16 or The longitudinal axis 11 are arranged.
  • FIG. 2 and 3 show an exemplary embodiment of an optical system 1, here for example a camera sensor, e.g. for a vehicle and in particular in the automotive sector.
  • FIG. 2 shows a longitudinal sectional view of the optical system 1 and
  • FIG. 3 shows the section A-A in FIG.
  • the optical system 1 has a first housing part 5 with an optics receptacle 6 , for example a recess, for a lens 8 , for example, as the optical component 4 .
  • the first housing part 5 also has a housing part connection 7, e.g. a flange 22 with which the first housing part 5 is accommodated, for example, in an opening 23 of the second housing part 9 and with a flange section 24 rests on the outside of the opening 23 of the second housing part 5 .
  • the invention is not limited to this special configuration of the housing part connection 7 . Any other housing part connection 7 that is suitable for being connected to a second housing part 9 of the optical system 1 can be provided.
  • a printed circuit board (PCB) 25 with an image sensor (imager) 10 as an example of a detection device 30 is arranged in the second housing part 9 .
  • the second housing part 9 has a plug connection 26 which is connected to the printed circuit board 25 inside the second housing part 9 .
  • the optical component 4, here the lens 8, and the image sensor 10 lie on a common longitudinal axis 11, which forms the optical axis 12 in the exemplary embodiment.
  • the first housing part 5 has a lever arrangement 14 with a compensation element 15 .
  • the lever arrangement 14 and the compensation element 15 are formed between the optics mount 6 and the housing part connection 7 on the first housing part 5, for example in one piece as a two-component injection molded part.
  • the lever arrangement 14 has a lever section 16 with a base joint 17 about which the lever section 16 can be rotated or pivoted, as previously indicated in FIG. 1 with an arrow FB.
  • the lever section 16 forms a first lever arm 18 which is connected to the optical mount 6 and a second lever arm 19 which is connected or coupled to the compensation element 15 .
  • the lever section 16 is designed in one piece with the first housing part 5 with the optics receptacle 6 and can also be designed in one piece with the compensation element 15 in one exemplary embodiment, for example as a two-component injection-molded part.
  • the compensation element 15 can also be fastened as a separate part to the first housing part 5 and in particular to the compensation element receptacle 21, as described above.
  • the first housing part 5 with its optics mount 6 for the optical component 4 consists of a first material, eg plastic and/or metal, with a first coefficient of thermal expansion aA.
  • the compensation element 15 in turn consists of a second material, for example plastic and/or metal, with a second coefficient of thermal expansion aB, the second coefficient of thermal expansion aB being greater than the first coefficient of thermal expansion aA. Therefore, the compensation element 15 expands in the longitudinal direction and thus along the longitudinal axis 11, here the optical axis 12, when the temperature increases more than the first housing part 5 with the optics mount 6.
  • the compensation element 15 expands in the longitudinal direction and thereby presses on the second lever arm 19 of the lever section 16, as previously indicated in FIG. 1 with the arrow FB.
  • the lever section 16 with its second lever arm 19 can additionally have a defined support 27, e.g. a projection, on which the compensation element 15, e.g. rests and when the temperature threshold value is exceeded, also a pressure on the Edition 27 and thus the second lever arm 19 exerts.
  • the compensation element 15 can also be additionally prestressed against the second lever arm 19 and its support 27, e.g. the projection, in the fully assembled state of the optical system.
  • the lever section 16 is rotated about the base joint 17 and the second lever arm 19 with the compensation element 15 moves by the amount AB in the longitudinal direction in direction of the optics receptacle 9, while the first lever arm 18 with the optics receptacle 6 moves in the opposite direction in the direction of the detection device 30 by the amount AA in the longitudinal direction.
  • an additional joint 20 is provided between the optics mount 6 for the optical component 4 and the first lever arm 18 .
  • This additional joint 20 has the advantage that the first lever arm 18 can be rotated in a defined manner around the additional joint 20 when the lever section 16 rotates around the base joint 17 .
  • the base joint 17 and the additional joint 20 are each designed as a film hinge 28, for example.
  • a film hinge as shown in Fig. 2 and 3, can easily be ring-shaped and completely closed all the way around, so that no dust or moisture can penetrate into the first housing part 5 via the base joint 17 and the additional joint 20, since the respective Film hinge itself is closed and accordingly tight.
  • the first housing part 5 with the lever arrangement can be produced very easily by means of an elastic geometry, in particular by using film hinges.
  • the housing part has a very simple structure and the number of parts can be kept to a minimum.
  • the compensation element can be provided as a separate component on the first housing part or, alternatively, can be produced with it as a two-component injection-molded part.
  • Such a first housing part 5 with such a base joint 17 and an additional joint 20, which are preferably additionally shot all around and are correspondingly tight, can also be made of metal and/or plastic.
  • the compensation element 15 can also be made of metal and/or Plastic can be made with a larger coefficient of thermal expansion aB.
  • the compensation element 15 can be designed as a ring, for example.
  • the compensation element 15 can, for example, also consist of a plurality of blocks or sections, e.g. arcuate blocks or sections, which are arranged in particular in a circle around the longitudinal axis 11, and here the optical axis 12, and around the base joint 17.
  • the optical component 4 can also be a mirror, a prism, an optical filter, an optical grating, etc., for example.
  • a detection device 30 suitable for detecting this respective radiation is provided as a detection device 30 for the respective optical component 4 and its transmitted radiation, e.g. light beams, laser beams, UV rays, radioactive rays, etc.
  • the invention is not limited to an image sensor 10 as the detection device 30 and a lens 8 as the optical component 4 .
  • the first housing part 5 or carrier part largely assumes the function of object detection with the housing part connection 7, e.g. fixing flange 22, to the second housing part 9, here e.g. a camera housing, the Geometry is designed in such a way that a flexible part geometry allows stretching in the longitudinal direction. The material is retained for functional reasons and has a given coefficient of thermal expansion.
  • the compensation element 15, a simple actuator ring made of a second material with greater thermal expansion, is integrated into the first housing part 5 or carrier part in such a way that its disproportionate change in length when the temperature changes means that it can press the first housing part 5 or carrier part via a freely configurable lever geometry, here the lever section 11 with the two joints 17, 20 is inversely proportionally influenced and thus counteracts its own thermal expansion.
  • a freely configurable lever geometry here the lever section 11 with the two joints 17, 20 is inversely proportionally influenced and thus counteracts its own thermal expansion.
  • the compensation function can be varied over a wide range and the compensation of several sources of error in the system can be taken over in one component and thermal influences can be largely eliminated.
  • the invention is based on a very simple, robust, solid-physical active principle with negligibly few sources of error.
  • the thermal expansion of the optical device and in particular of its first housing part can be compensated passively with its own means, i.e. the lever arrangement and the compensation element, and thus without a moving part that is critical in terms of tolerance and wear.
  • the lever arrangement with the compensation element can be varied very flexibly for a wide variety of optical systems and applications and, in particular, can also be designed in the form of a ring.
  • the first housing part with its optics mount, its lever arrangement, its compensation element and its housing part connection is designed once and does not require any readjustment. This enables very cost-effective mass production, e.g. as a two-component injection molded part.
  • the first housing part with its base joint and optional additional joint in the form of film hinges, allows a closed part geometry without affecting the technical function, e.g 1 and 2, and the operating principle on which the invention is based, the optical system is independent of environmental conditions.
  • the first housing part with its lever arrangement and the compensation element can be closed and sealed, in addition to the second housing part, thus applications of the optical system in a gas atmosphere, in vacuum and under water etc. are possible.
  • the optical system according to the invention is therefore particularly suitable for use in the automotive sector, particularly with an image sensor as the detection device and particularly in fixed-focus camera systems without a focusing device for setting or correcting the sharpness, and above all in the area of driver assistance systems. Since optical lens systems with an image sensor, as an example of optical systems, can very easily and efficiently compensate for a previous result-falsifying influence of thermal expansion in components, such optical systems are particularly suitable for use in areas where high precision is required. Furthermore, with the optical system according to the invention, the strict CMS guidelines and standards UNECE UN R.46 ISO 165005 and comparable international regulations for camera monitor systems can be complied with.
  • the optical system according to the invention can be used, for example, in automotive cameras. The usable temperature range of automotive cameras can be increased with the optical system according to the invention. In addition, a reduction or even elimination of temperature influences on the imaging quality of optical lens systems on digital image sensors can be achieved with the optical system according to the invention.

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Abstract

L'invention concerne un système optique (1), en particulier pour un véhicule, comprenant : un dispositif optique (2) qui a une première partie de boîtier (5) avec un support de lentille (6) dans lequel un composant optique (4) est maintenu, la première partie de boîtier (5) ayant un premier coefficient de dilatation thermique ; un élément de compensation (15) qui est logé dans la première partie de boîtier (5) et a un second coefficient de dilatation thermique supérieur au premier coefficient de dilatation thermique ; un dispositif de détection (3) qui présente une seconde partie de boîtier (9) dans laquelle est logé un moyen de détection (30) pour détecter le rayonnement transmis par le composant optique (4), la première partie de boîtier (5), avec son support de lentille (6) et le composant optique (4), et la seconde partie de boîtier (9), avec le moyen de détection (30), étant reliées l'une à l'autre dans la direction longitudinale, la première partie de boîtier (5) étant conçue avec un ensemble levier (14) qui peut être actionné au moyen de l'élément de compensation (15) de telle sorte que lorsque la première partie de boîtier (5) se dilate d'une quantité dans la direction longitudinale suite à une augmentation de température, l'ensemble levier (14) presse la première partie de boîtier (5) dans la direction opposée dans la direction longitudinale, de préférence par la même quantité ou sensiblement la même quantité.
PCT/DE2022/200287 2022-01-14 2022-12-02 Système optique et véhicule ayant au moins un système optique WO2023134818A1 (fr)

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DE102022200350.0 2022-01-14
DE102022200350.0A DE102022200350A1 (de) 2022-01-14 2022-01-14 Optisches System und Fahrzeug mit wenigstens einem optischen System

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Publication number Priority date Publication date Assignee Title
JP2003172864A (ja) * 2001-12-07 2003-06-20 Konica Corp カメラ
DE102011110167A1 (de) * 2011-08-13 2013-02-14 Connaught Electronics Ltd. Bildaufnahmevorrichtung mit einem Abstandskompensationselement sowie Kamera und Fahrzeug mit einer Bildaufnahmevorrichtung

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