DE102019111946A1 - Optoelectronic device for an optical detection device and optical detection device - Google Patents

Abstract

An optoelectronic device (28) for an optical detection device for detecting objects in a monitoring area and an optical detection device are described. The optoelectronic device (28) comprises at least one optoelectronic component (38) for converting electrical signals into optical signals (24) or vice versa, and at least one optical system (34) which is used for focusing optical signals (24) in the optical path ( 42) at least one optoelectronic component (38) is arranged. The optoelectronic device (28) has at least one temperature compensation device (40) with which the at least one optical system (34) and at least one optoelectronic component (38) can be moved relative to one another so that, depending on a temperature, a length of an optical path ( 42) the optical signals (24) between the at least one optical system (34) and the at least one optoelectronic component (38) can be changed.

Description

Technical area

• - mit wenigstens einem optoelektronischen Bauteil zur Umwandlung von elektrischen Signalen in optische Signale oder umgekehrt,
• - mit wenigstens einem optischen System, welches zur Fokussierung von optischen Signalen im optischen Weg wenigstens eines optoelektronischen Bauteils angeordnet ist.

The invention relates to an optoelectronic device for an optical detection device for detecting objects in a monitoring area

• - with at least one optoelectronic component for converting electrical signals into optical signals or vice versa,
• - With at least one optical system, which is arranged for focusing optical signals in the optical path of at least one optoelectronic component.

• - mit wenigstens einer optoelektronischen Einrichtung aufweisend
• - wenigstens ein optoelektronisches Bauteil zur Umwandlung von elektrischen Signalen und optischen Signalen oder umgekehrt,
• - und wenigstens ein optisches System, welches zur Fokussierung von optischen Signalen im optischen Weg wenigstens eines optoelektronischen Bauteils angeordnet ist,
• - und mit wenigstens einer Auswerte- und Steuereinrichtung zur Steuerung der wenigstens einen optoelektronischen Einrichtung und zur Verarbeitung von elektrischen Signalen.

The invention also relates to an optical detection device for detecting objects in a monitoring area,

• - Having at least one optoelectronic device
• - at least one optoelectronic component for converting electrical signals and optical signals or vice versa,
• - and at least one optical system which is arranged for focusing optical signals in the optical path of at least one optoelectronic component,
• and with at least one evaluation and control device for controlling the at least one optoelectronic device and for processing electrical signals.

State of the art

From the DE 10 2011 108 683 A1 an optical measuring device for a vehicle is known which has a sensor unit designed as a laser scanner with a housing. Various components such as a transmitting and / or receiving device and a deflecting mirror arrangement are arranged within the housing. The transmitting and / or receiving device comprises a transmitter board on which, for example, an optical transmitter in the form of a pulsed laser with transmission optics is arranged, a receiver board on which, for example, an optical receiver in the form of a detector is arranged, and receiving optics, which for example as a parabolic mirror is executed.

It has been shown that changes in the ambient temperature negatively affect the interaction of the at least one optical system and the at least one optoelectronic component, in particular the imaging quality of optical signals from the at least one optoelectronic component or to the at least one optoelectronic component.

The invention is based on the object of designing an optoelectronic device and an optical detection device of the type mentioned at the outset, in which a temperature-related influence on the interaction of the at least one optical system and the at least one optoelectronic component can be compensated.

Disclosure of the invention

According to the invention, this object is achieved in the optoelectronic device in that the optoelectronic device has at least one temperature compensation device with which the at least one optical system and at least one optoelectronic component can be moved relative to one another so that, depending on a temperature, a length of an optical path of the optical Signals between the at least one optical system and the at least one optoelectronic component can be changed.

According to the invention, a temperature-related shift of the focus of the at least one optical system is counteracted with at least one temperature compensation device. This is achieved in that the length of the optical path of the optical signals between the at least one optical system and the at least one optoelectronic component is changed as a function of the temperature with the at least one temperature compensation device. In particular, the optoelectronic device can be adjusted prior to commissioning. The positions of the at least one optical system and the at least one optoelectronic component can be set in such a way that the at least one optoelectronic component is in the focus of the at least one optical system. With the aid of the at least one temperature compensation device, defocusing due to a temperature change is counteracted.

Overall, with the aid of the invention, the optical detection device can be operated at ambient temperatures of less than -40 ° C. to more than 85 ° C., even under rough operating conditions, in particular vibrations and impacts, without defocusing the system.

The optical detection device can advantageously have at least one control and evaluation device. The optical detection device can be controlled with the at least one control and evaluation device. In addition, information from the monitoring area can be obtained with the control and evaluation device be evaluated. A distance, a speed and / or a direction of an object relative to the optical detection device can be determined from this information.

Optical signals, in particular light signals, within the meaning of the invention carry reproducible and individually specifiable information. The information can either be implemented via the length of an optical signal or in some other way, in particular by coding or the like. Optical signals obey a defined scheme.

The at least one detection device can advantageously operate according to a time-of-flight method, in particular a time-of-flight method. Optical detection devices operating according to the light pulse transit time method can be designed and designated as time-of-flight (TOF), light detection and ranging systems (LiDAR), laser detection and ranging systems (LaDAR) or the like. A transit time from the emission of a light signal, in particular a light pulse, with at least one optoelectronic transmitter component and the reception of the corresponding light signal reflected on an object with at least one optoelectronic receiver component is measured and a distance between the detection device and the detected object is determined from this.

The optical detection device can advantageously be designed as a laser-based distance measuring system.

The invention can be used in a vehicle, in particular a motor vehicle. The invention can advantageously be used in a land vehicle, in particular a passenger car, a truck, a bus, a motorcycle or the like, an aircraft and / or a watercraft. The invention can also be used in vehicles that can be operated autonomously or at least partially autonomously. However, the invention is not limited to vehicles. It can also be used in stationary operation.

The optical detection device can advantageously be connected to at least one electronic control device of a vehicle, in particular a driver assistance system and / or a chassis control and / or a driver information device and / or a parking assistance system and / or gesture recognition or the like. In this way, at least partially autonomous operation of the vehicle can be made possible. Object data acquired with the detection device, in particular the distance, direction and / or relative speed of an object relative to the vehicle, can be transmitted to the control device and used to influence driving functions, in particular the speed, a braking function, a steering function, a chassis control and / or an output of information and / or warning signals, in particular for the driver or the like, can be used.

With the optical detection device, stationary or moving objects, in particular vehicles, people, animals, plants, obstacles, uneven road surfaces, in particular potholes or stones, road boundaries, open spaces, in particular parking spaces, or the like, can be detected.

In an advantageous embodiment, at least one temperature compensation device can have at least one thermal compensation element, which can change its geometric dimensions as a function of temperature. In this way, the at least one temperature compensation device can react directly to temperature changes in that the at least one thermal combination element changes its geometric dimensions. With the aid of the change in the geometric dimensions, the at least one optoelectronic component and the at least one optical system can be moved relative to one another. A separate temperature sensor and a separate actuator, in particular a motor or the like, which are more susceptible to wear and tear, can thus be dispensed with. In this way, a longer service life of the optoelectronic device can be made possible. Thermal compensation elements are also less prone to failure, as no electronic components have to be used.

In a further advantageous embodiment, at least one optoelectronic component can be directly or indirectly movably connected to at least one thermal compensation element along the optical path and / or at least one optical system can be connected directly or indirectly to at least one thermal compensation element movably along the optical path. In this way, the at least one optoelectronic component and / or the at least one optical system with the at least one thermal compensation element can be moved.

The at least one optoelectronic component and / or the at least one optical system can be connected directly to the at least one thermal compensation element. In this way, additional components can be dispensed with.

As an alternative or in addition, at least one optoelectronic component and / or at least one optical system can be connected indirectly to the at least one thermal compensation element, in particular via corresponding guides, holders and / or frames. In this way, the at least one thermal compensation element can be designed and / or arranged more flexibly.

In a further advantageous embodiment, at least one optoelectronic component and / or at least one optical system can be pivotable relative to the optical path and / or at least one optoelectronic component and / or at least one optical system can be displaceable along the optical path. By corresponding pivoting and / or shifting relative to the optical path, the length of the optical path between the at least one optoelectronic component and the at least one optical system can be changed accordingly.

In a further advantageous embodiment, at least one optoelectronic component and / or at least one optical system can be guided with at least one guide device. In this way, the direction of movement of the at least one optoelectronic component and / or of the at least one optical system can be specified. It can thus be prevented that the at least one optoelectronic component and / or the at least one optical system moves in an undesired direction, in particular transversely to the optical path.

In a further advantageous embodiment, at least one thermal compensation element can comprise or consist of plastic at least one temperature compensation device. Thermal compensation elements can easily be produced from plastic, in particular shaped, injection-molded and / or cast.

Advantageously, at least one thermal compensation element can comprise or consist of polyethylene, in particular ultra-high molecular weight polyethylene. Polyethylene, in particular UHMP polyethylene, has a comparatively high coefficient of thermal expansion, which is suitable for counteracting temperature-related defocusing.

In a further advantageous embodiment, at least one optoelectronic component can have or consist of at least one receiver and / or at least one optoelectronic component can have or consist of at least one light source. With a receiver, optical signals, in particular light signals, can be converted into electrical signals. With a light source, electrical signals can be converted into optical signals, in particular light signals. Electrical signals can be processed and / or generated with a corresponding electronic control and evaluation device.

If the at least one optoelectronic component has or consists of at least one light source, a corresponding optical system can be used to focus the optical signals emitted by the at least one light source.

If the at least one optoelectronic component has or consists of at least one receiver, a corresponding optical system can be used to focus incoming optical signals onto the at least one receiver.

The optoelectronic device can advantageously be a receiving device, a transmitting device or a transmitting and receiving device. In the case of a receiving device, the optoelectronic device can have at least one receiver as an optoelectronic component. In the case of a transmitting device, the optoelectronic device can have at least one light source as an optoelectronic component. In the case of a transmitting and receiving device, the optoelectronic device can have both a light source as an optoelectronic component and a receiver as a correspondingly different optoelectronic component.

The optoelectronic device can advantageously have or consist of at least one laser, in particular a diode laser, as the light source. In particular, pulsed light signals can be sent with a laser. With a laser, light signals can be emitted in frequency ranges that are visible or invisible to the human eye.

The optoelectronic device can advantageously have or consist of at least one receiver, in particular a point sensor, area sensor or line sensor, in particular an (avalanche) photodiode, a photodiode line, a CCD sensor or the like.

In a further advantageous embodiment, at least one optical system can have or consist of at least one optical lens. In this way, the at least one optical system can be implemented more easily.

In a further advantageous embodiment, at least one optical lens can be plastic have or consist of them. Optical lenses made of or with plastic can be manufactured easily and inexpensively.

At least one optical lens can advantageously comprise or consist of cycloolefin (co) polymer (COP or COC), polycarbonate, polymethyl methacrylate or the like. Optical lenses can be manufactured simply and precisely from such plastics.

In a further advantageous embodiment, at least one light signal deflection device can be arranged in the optical path between at least one optoelectronic component and at least one optical system. The optical signals can be deflected with a light signal deflection device. In this way, the optical path can be “folded” to a certain extent. The at least one optical system and the at least one optoelectronic component can thus be arranged in a space-saving manner.

At least one light signal deflection device can advantageously have or consist of at least one mirror. Optical signals, in particular light signals, can easily be deflected with a mirror.

In a further advantageous embodiment, at least one optoelectronic component and / or at least one optical system can be fixed directly or indirectly to a base frame by means of at least one adhesive adjustment device. An adhesive adjustment device has adhesive that is initially flexible during assembly. The at least one optoelectronic component and / or the at least one optical system can still be moved in this way for the purpose of adjustment. After the adhesive has cured, the adhesive adjuster is firm and shockproof. The adhesive of the adhesive adjustment device can be cured actively, in particular with the aid of UV light.

The adhesive adjustment device can advantageously have at least one adhesive pocket. A corresponding adhesive can be arranged in an adhesive pocket.

Epoxy resin adhesive can advantageously be used as the adhesive. Epoxy glue can be hardened. When cured, epoxy resin adhesive has good mechanical properties and good temperature and chemical resistance.

Furthermore, the object is achieved according to the invention in the optical detection device in that the optoelectronic device has at least one temperature compensation device with which the at least one optical system and at least one optoelectronic component can be moved relative to one another, so that a length of an optical path of the optical signals between the at least one optical system and the at least one optoelectronic component can be changed.

In addition, the features and advantages shown in connection with the optoelectronic device according to the invention and the optical detection device according to the invention and their respective advantageous configurations apply mutatis mutandis and vice versa. The individual features and advantages can of course be combined with one another, whereby further advantageous effects can arise that go beyond the sum of the individual effects.

Figure list

• 1 ein Fahrzeug in der Vorderansicht, mit einem Fahrerassistenzsystem und einer optischen Detektionsvorrichtung;
• 2 eine Funktionsdarstellung des Fahrzeugs aus der 1 mit dem Fahrerassistenzsystem und der optischen Detektionsvorrichtung;
• 3 eine Seitenansicht einer Empfangseinrichtung der optischen Detektionsvorrichtung aus den 1 und 2 gemäß einem ersten Ausführungsbeispiel;
• 4 eine Unteransicht der Empfangseinrichtung aus der 3 in einer Betrachtungsrichtung IV aus 3;
• 5 einen Längsschnitt einer Empfangseinrichtung der optischen Detektionsvorrichtung aus den 1 und 2 gemäß einem zweitem Ausführungsbeispiel;
• 6 eine Rückansicht der Empfangseinrichtung aus der 5 in einer Betrachtungsrichtung VI aus 5;
• 7 ein Detail eines Querschnitts einer Führungseinrichtung für eine optische Linse der Empfangseinrichtung aus den 5 und 6 in der Betrachtungsrichtung VI aus der 5.

Further advantages, features and details of the invention emerge from the following description in which exemplary embodiments of the invention are explained in more detail with reference to the drawing. The person skilled in the art will expediently also consider the features disclosed in combination in the drawing, the description and the claims individually and combine them into meaningful further combinations. It show schematically

• 1 a vehicle in the front view, with a driver assistance system and an optical detection device;
• 2 a functional representation of the vehicle from 1 with the driver assistance system and the optical detection device;
• 3 a side view of a receiving device of the optical detection device from FIG 1 and 2 according to a first embodiment;
• 4th a bottom view of the receiving device from FIG 3 in a viewing direction IV 3 ;
• 5 a longitudinal section of a receiving device of the optical detection device from the 1 and 2 according to a second embodiment;
• 6th a rear view of the receiving device from FIG 5 in a viewing direction VI 5 ;
• 7th a detail of a cross section of a guide device for an optical lens of the receiving device from FIG 5 and 6th in viewing direction VI from the 5 .

In the figures, the same components are provided with the same reference symbols.

Embodiment (s) of the invention

In the 1 is a vehicle 10 shown by way of example in the form of a passenger car in the front view. The vehicle 10 has an optical detection device 12 , which with a driver assistance system 14th of the vehicle 10 connected is.

The optical detection device 12 is located in the front bumper of the vehicle, for example 10 . With the optical detection device 12 can be a surveillance area 16 in the direction of travel 18th in front of the vehicle 10 on objects 20th to be monitored. In the 2 is an example of an object 20th indicated. The optical detection device 12 can also be in another part of the vehicle 10 and be oriented in other directions. Several optical detection devices can also be used 12 at different points on the vehicle 10 be provided with different orientations.

The optical detection device 12 is designed, for example, as a laser scanner that works according to a light pulse transit time method. With the optical detection device 12 can transmitter light signals 22nd for example in the form of laser pulses in the monitoring area 16 be sent. Thereby the direction of the transmitter light signals 22nd changed between measurements so that the monitoring area 16 with the transmitter light signals 22nd is scanned, i.e. scanned. Unless in the monitoring area 16 an object 20th are located, the transmitter light signals 22nd reflected on this. Transmitter light signals 22nd attached to the object 20th in the direction of the optical detection device 12 are reflected with the optical detection device 12 as received light signals 24 receive. From a transit time between the transmission of the transmitter light signals 22nd and the reception of the corresponding received light signals 24 becomes a distance of the detected object 20th relative to the optical detection device 12 determined. In addition, the received light signals can be used 24 a direction and a speed of the object 20th relative to the optical detection device 12 be determined.

In the 2 is the vehicle 10 with the optical detection device 12 shown as a functional representation.

The optical detection device 12 has a transmission facility 26th , a receiving device 28 and a deflecting swivel mirror 30th . With the transmitting device 26th can use the transmitter light signals 22nd generated and via the deflecting swivel mirror 30th in the monitoring area 16 be sent. Thereby the transmitter light signals 22nd with the deflecting swivel mirror 30th diverted so that their directions over the monitored area 16 be swiveled. In addition, with the deflection swivel mirror 30th from the surveillance area 16 incoming light signals 24 to the receiving device 28 diverted. With the receiving device 28 can receive light signals 24 are recorded. Instead of the deflecting swivel mirror 30th can also use a different type of deflection device for transmitter light signals 22nd and receiving light signals 24 be provided. For transmitter light signals 22nd and receiving light signals 24 separate deflection devices can also be provided.

The sending facility 26th , the receiving device 28 and the deflecting swivel mirror 30th are each signaling with a control and evaluation device 32 the optical detection device 12 connected. With the control and evaluation device 32 can use the sending facility 26th , the receiving device 28 and the deflecting swivel mirror 30th being controlled. Furthermore, with the control and evaluation device 32 Information obtained using the transmitter light signals 22nd and the received light signals 24 from the surveillance area 16 are obtained, are evaluated.

The control and evaluation device 32 is signaling with the driver assistance system 14th connected. With the driver assistance system 14th can be functional components of the vehicle 10 , for example the engine, the brakes, steering, the chassis and / or output means for information and / or warning signals, for example for the driver or the like, can be controlled or influenced. With the help of the driver assistance system 14th can the vehicle 10 operated semi-autonomously or autonomously.

In the 3 is the receiving facility 28 according to a first embodiment in a longitudinal section and in the 4th shown in a top view. The receiving device 28 comprises an optical system in the form of an optical lens 34 , a light signal deflecting device 36 , a recipient 38 and a temperature compensation device 40 . In the 3 are also exemplary ray courses 74 the received light signals 24 indicated.

The optical lens 34 is realized as a plastic lens, for example made of cyclo-olefin polymer. With the optical lens 34 the incoming received light signals 24 on the recipient 38 focused. Recipient 38 must be in focus of the optical lens 34 lie. The light signal deflection device 36 is in an optical path 42 the Received light signals 24 between the optical lens 34 and the recipient 38 is arranged.

With the light signal deflection device 36 it is, for example, a mirror. With the light signal deflection device 36 are those of the optical lens 34 incoming light signals 24 on the recipient 38 diverted. The mirror surface of the light signal deflecting device is an example 36 by 45 ° with respect to an optical axis of the optical lens 34 inclined. This way becomes the optical path 42 within the receiving device 28 "folded" as it were. In this way, a compact structure can be realized. In the 3 the optical axis of the optical lens coincides 34 for example with the optical path 42 so that a separate designation is dispensed with for the sake of clarity.

The optical lens 34 and the light signal diverter 36 are fixed to a base frame 44 the receiving device 28 connected.

At the recipient 38 it is, for example, a line sensor, in particular a line of photodiodes or a CCD sensor. Recipient 38 is in a guide frame 46 the temperature compensation device 40 held. The lead frame 46 with the recipient 38 is around a bending area 48 pivotable. The long side of the receiver 38 extends parallel to the bending area 48 .

In the 3 is the lead frame 46 with the recipient 38 shown in a basic position I and in an exemplary deflection position II. The guide frame is in the deflection position II 46 and the recipient 38 indicated by dashed lines.

The temperature compensation device 40 also has a support frame 50 and, for example, two thermal compensation elements 52 on.

The support frame 50 is exemplarily in three adhesive pockets 54 Fixed with epoxy resin adhesive. The adhesive pockets 54 create an imaginary triangle. The adhesive pockets 54 themselves are on the base frame 44 attached. About the adhesive pockets 54 is the support frame 50 firmly to the base frame 44 connected.

The lead frame 46 with the recipient 38 is on the side of the support frame 50 , which of the light signal deflection device 36 is turned away. The bending area 48 of the guide frame 46 one side is with the support frame 50 firmly connected so that the recipient 38 pivotable and thus relative to the optical lens 34 in the optical path 42 is movable.

Between the support frame 50 and the lead frame 46 are the thermal compensation elements 52 arranged. The support frame 50 has two support troughs 56 , in which there is one of the thermal compensation elements 52 supported on one side. The lead frame 46 accordingly has two support areas 58 on, in which the thermal compensation elements 52 with their support troughs 56 support opposite sides.

The thermal compensation elements 52 are for example cuboid. Opposite short sides of the cuboid are supported in the support troughs 56 and the support areas 58 from.

The thermal compensation elements 52 each consist of plastic, for example UHNW polyethylene. The thermal compensation elements 52 have a coefficient of thermal expansion which, in conjunction with their geometric shape, is adapted to a temperature-related defocusing of the receiving device 28 to counteract.

If the temperature rises, the thermal compensation elements expand 52 in one direction of extension 60 each so that the guide frame 46 from the support frame 50 is pivoted away. With a corresponding decrease in temperature, the dimension increases in the direction of expansion 60 so that the guide frame 46 with the recipient 38 to the signal diverter 36 is pivoted towards.

By pivoting the guide frame 46 with the recipient 38 becomes the length of the optical path 42 between the optical lens 34 and the recipient 38 changed. In this way, when operating the receiving device 28 a temperature-related shift in the focus of the optical lens 34 counteracted.

For mounting the receiving device 28 become the optical lens 34 and the light signal diverter 36 on the base frame 44 attached.

The support frame 50 with the guide frame 46 , the recipient 38 and the thermal compensation elements 52 is in the still soft epoxy resin adhesive of the adhesive pockets 54 stored. Then the support frame 50 for adjusting the receiving device 28 using reference received light signals 24 aligned so that the the reference received light signals 24 on the recipient 38 are focused. The support frame 50 is then fixed with a suitable holding tool, not shown, until the epoxy resin adhesive is in the adhesive pockets 54 is cured. The Adhesive pockets 54 together with the epoxy resin adhesive form an adhesive adjustment device. The epoxy resin adhesive can be irradiated with UV light to accelerate the hardening process. After the epoxy glue has hardened, the receiving device is 28 overall shock and vibration resistant. The holding tool is removed.

In the 5 to 7th is a receiving device 28 shown according to a second embodiment. Those elements that correspond to those of the first embodiment from the 3 and 4th are similar are given the same reference numerals. The second embodiment differs from the first embodiment in that the receiver 38 firmly to the base frame 44 connected is. Instead it is the optical lens 34 with the help of a temperature compensation device 140 in the optical path 42 relative to the recipient 38 movable.

The optical lens 34 is circumferentially in a guide frame with respect to its optical axis 146 attached. In the 5 the optical axis of the optical lens coincides 34 for example with the optical path 42 so that for the sake of clarity, a separate reference number is dispensed with.

The lead frame 146 is on a guide section 62 of the base frame 144 along the optical path 42 slidably guided. Cross-section of the guide frame 146 with the guide section 62 is in detail in the 7th shown. The lead frame 146 exemplifies its the optical lens 34 facing inside several guide pins 64 on which in corresponding guide grooves 66 of the guide section 62 be guided. The guide grooves 66 extend parallel to the optical path 42 .

A total of four elongated thermal compensation elements 52 extend parallel to the optical path 42 from a back wall 68 of the base frame 144 to the optical lens 34 .

On the optical lens side 34 the thermal compensation elements are supported 52 against the guide frame 146 from. The support areas are in the 5 covered and therefore not shown.

The thermal compensation elements are supported on the opposite side 52 each against the back wall 68 from. The thermal compensation elements 52 are each with a fastener 70 on the back wall 68 attached.

Recipient 38 is on a side wall 72 of the base frame 144 , in the 4th and 5 below, fixed. The light signal deflection device 36 is also firmly attached to the base frame 144 connected.

If the temperature increases, the thermal compensation elements expand 52 in their respective direction of expansion 60 off so the optical lens 34 along the optical path 52 from the back wall 68 is pushed away. The length of the thermal compensation elements is reduced accordingly 52 when the temperature drops, so the optical lens 34 along the optical path 52 to rear wall 68 is pushed. When moving, the optical lens 34 with the guide frame 146 in the guide section 62 guided. This prevents the optical lens 34 shifted in the lateral direction or opposite the optical path 52 is tilted.

QUOTES INCLUDED IN THE DESCRIPTION

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Patent literature cited

• DE 102011108683 A1 [0003]

Claims (12)

Optoelectronic device (28) for an optical detection device (12) for detecting objects (20) in a monitoring area (16) - with at least one optoelectronic component (38) for converting electrical signals into optical signals (24) or vice versa - with at least one optical system (34) which is arranged for focusing optical signals (24) in the optical path (42) of at least one optoelectronic component (38), characterized in that the optoelectronic device (28) has at least one temperature compensation device (40; 140 ), with which the at least one optical system (34) and at least one optoelectronic component (38) can be moved relative to one another so that, depending on a temperature, a length of an optical path (42) of the optical signals (24) between the at least one optical system (34) and the at least one optoelectronic component (38) can be changed. Optoelectronic device according to Claim 1 , characterized in that at least one temperature compensation device (40; 140) has at least one thermal compensation element (52) which can change its geometric dimensions (60) as a function of temperature. Optoelectronic device according to Claim 1 or 2 , characterized in that at least one optoelectronic component (38) is connected directly or indirectly to at least one thermal compensation element (52) movably along the optical path (42) and / or at least one optical system (34) directly or indirectly to at least one thermal Compensation element (52) is movably connected along the optical path (42). Optoelectronic device according to one of the preceding claims, characterized in that at least one optoelectronic component (38) and / or at least one optical system (34) is pivotable relative to the optical path (42) and / or at least one optoelectronic component (38) and / or at least one optical system (34) is displaceable along the optical path (42). Optoelectronic device according to one of the preceding claims, characterized in that at least one optoelectronic component (38) and / or at least one optical system (34) is guided with at least one guide device (46; 146). Optoelectronic device according to one of the preceding claims, characterized in that at least one thermal compensation element (52) at least one temperature compensation device (40; 140) comprises or consists of plastic. Optoelectronic device according to one of the preceding claims, characterized in that at least one optoelectronic component (38) has or consists of at least one receiver and / or at least one optoelectronic component has or consists of at least one light source. Optoelectronic device according to one of the preceding claims, characterized in that at least one optical system (34) has or consists of at least one optical lens. Optoelectronic device according to Claim 8 , characterized in that at least one optical lens (34) comprises or consists of plastic. Optoelectronic device according to one of the preceding claims, characterized in that at least one light signal deflecting device (36) is arranged in the optical path (42) between at least one optoelectronic component (38) and at least one optical system (34). Optoelectronic device according to one of the preceding claims, characterized in that at least one optoelectronic component (38) and / or at least one optical system (34) is fixed directly or indirectly to a base frame (44) by means of at least one adhesive adjustment device (54). Optical detection device (12) for detecting objects (20) in a monitored area (16) - having at least one optoelectronic device (28) - at least one optoelectronic component (38) for converting electrical signals and optical signals (24) or vice versa - and at least one optical system (34) which is arranged for focusing optical signals (24) in the optical path (42) of at least one optoelectronic component (38), - and with at least one evaluation and control device (32) for control the at least one optoelectronic device (28) and for processing electrical signals, characterized in that the optoelectronic device (28) has at least one temperature compensation device (40; 140) with which the at least one optical system (34) and at least one optoelectronic component (38) can be moved relative to one another, so that depending on a Temperature, a length of an optical path (42) of the optical signals (24) between the at least one optical system (34) and the at least one optoelectronic component (38) can be changed.

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