Digital vision system and control methods with digital vision system

Abstract

The invention relates to a vision system (1) for a vehicle, comprising a receiving unit (2) for detecting a detection area (3), a processing unit for outputting a portion of the detection area (3) as a usable area (4), and a protective device (5) for shielding and / or covering the receiving unit (2) to protect it from environmental influences, wherein the protective device (5) is partially arranged within the detection area (3) and forms a protective area (6) in which a portion of the detection area (3) is obscured by the protective device (5), the protective area (6) being variably adjustable so that the usable area (4) remains at least partially visible. The invention also relates to a control method for the vision system (1).

Description

[0001] The invention relates to a vision system for a vehicle. The vision system comprises a recording unit, in particular a camera, for capturing a detection area, i.e., an image area, and a processing unit for outputting the detection area or a sub-area of ​​the detection area as a usable area. Furthermore, the vision system comprises a protective device for shielding and / or covering the recording unit as protection against environmental influences. Furthermore, the invention relates to a control system with the vision system or the vision system.

[0002] A camera with an image sensor for a vehicle vision system is already known from US 2018 / 0 091 717 A1, which is used in particular to assist with lane changing, parking, or reversing. The camera has light blocking elements in the form of an internally arranged deflector plate, an externally arranged deflector plate, and / or a filter element, the position of which can each be adjusted via an actuator.

[0003] In addition, from the document DE 10 2016 119 679 A1 a camera is known which is used for a vehicle, in particular in a lane keeping system, and has an image sensor and a diaphragm which can be adjusted via an actuating mechanism and with which a field of view can be partially covered to protect against glare.

[0004] Furthermore, protective devices are known from the prior art, for example, in the form of a roof that protrudes axially from the recording unit to provide protection against environmental influences. So-called shutter cameras are also known from the prior art, in which a flap closes when not in use, completely concealing the recording unit, and is fully retracted when in use.

[0005] For covering and / or shielding purposes, the protective device is arranged partially within the detection area and forms a protective area in which a portion of the detection area is concealed by the protective device.

[0006] Depending on the position or size of the protective device and the selected usable area, the functionality of the vision system can be significantly limited. On the one hand, the protective device may not provide sufficient protection against environmental influences in a standard usable area setting. On the other hand, it may happen that the protective device overlaps the usable area in an (extremely) misadjusted usable area setting, significantly limiting the usability of the usable area.

[0007] The invention is therefore based on the object of providing a vision system that avoids or reduces the disadvantages of the prior art and ensures sufficient functionality, in particular for different applications of the vision system (for example, operation in the standard setting of the useful range and in an (extremely) adjusted setting of the useful range).

[0008] The object of the invention is achieved by a vision system having the features of patent claim 1. Advantageous further developments are the subject of the subclaims.

[0009] In particular, the problem is solved by a vision system for a vehicle. The vision system has a recording unit for capturing a detection area. In particular, the recording unit is designed as a camera that is prepared / configured to record an image area. Furthermore, the vision system has a processing unit for outputting the detection area or a sub-area of ​​the detection area as a useful area. In particular, the processing unit is prepared / configured to display a specific / desired / selected part / section of the detection area ( / image area) as the useful area. Furthermore, the vision system has a protective device for shielding the recording unit as protection against environmental influences.For covering and / or shielding purposes, the protective device is arranged partially within the detection area and forms a protective area in which a portion of the detection area is concealed by the protective device.

[0010] According to the present invention, the protective area, i.e., the area of ​​the detection area concealed / covered by the protective device, is variably adjustable / changeable / adjustable such that the useful area is or remains at least partially visible. In particular, the protective device is changeable such that, on the one hand, a partial area of ​​the detection area is covered, but, on the other hand, at least a partial area of ​​the useful area remains visible.

[0011] In other words, the invention relates to a vision system for a vehicle, comprising a recording unit with at least one image sensor and an optical element for recording a maximum detection area around the vehicle in the form of image data; wherein the recording unit has at least one processing unit for processing the image data recorded by the recording unit; wherein a variable sub-area of ​​the maximum detection area is used as the usable area; a variable protective device which is at least partially arranged in the maximum detection range of the recording unit and creates a protective area; wherein the protective device is changed depending on the area of ​​use, in particular an adjustment of the image (left / right and / or up / down) and / or depending on environmental influences, in particular sunlight and / or rain.

[0012] According to a preferred embodiment, the protective device can be variably adjustable with regard to its location / position and / or size / dimensions / shape and / or its nature. This means that the area of ​​the detection zone covered by the protective device can be changed by variably adjusting the position of the protective device relative to the receiving unit and / or by variably adjusting the size of the protective device and / or by variably adjusting the nature of the protective device.

[0013] The protective device can preferably be designed as a single piece or in multiple parts. For example, the protective device can be designed as a multi-part device similar to an iris diaphragm, which has adjustable blades to allow the opening width of the iris diaphragm to be variably adjusted.

[0014] According to a preferred embodiment, the protective device can be designed to be adjusted depending on the usable area. This means that the position and / or size / dimensions / shape and / or nature of the protective device is controlled depending on the position of the usable area. Preferably, the protective device can be configured to be adjusted when the usable area is adjusted in one direction, for example upwards, such that the protective area is changed / moved in the direction in which the usable area was adjusted. In other words, the protective device can, in particular, be controlled such that the protective area essentially moves along with the usable area.

[0015] According to a preferred embodiment, the protective device can be coupled to the receiving unit in a mechanically movable manner. This has the advantage of providing a protective device that is easy to implement and intuitive to operate.

[0016] According to a preferred embodiment, a mechanical movement of the protective device relative to the receiving unit can be actuated manually and / or by motor. A stepper motor, in particular, can be used for motor actuation. This allows the adjustment of the protective device to be carried out easily and automatically.

[0017] According to a preferred embodiment, the protective device can be (pivotable or) rotatable relative to the receiving unit. For example, the protective device can be rotatable relative to the receiving unit about a rotation axis that is transverse, in particular perpendicular, to an optical axis of the receiving unit, or that is parallel (offset) to an optical axis of the receiving unit, or that corresponds to an optical axis of the receiving unit. Thus, a suitable variable adjustment can be realized for each design of the protective device. This has the advantage that the position of the protective device relative to the receiving unit can be variably adjusted.

[0018] According to a preferred embodiment, the protective device can be displaceable (translationally) relative to the receiving unit. For example, the protective device can be displaced relative to the receiving unit along a displacement direction that is transverse, in particular perpendicular, to an optical axis of the receiving unit or runs along an optical axis of the receiving unit. Thus, a suitable variable adjustment can be realized for each design of the protective device. This has the advantage that the position of the protective device relative to the receiving unit can be variably adjusted.

[0019] According to a preferred embodiment, the protective device can be formed from several sections that are movable relative to one another. This has the advantage that the size / dimensions of the protective device itself can be variably adjusted.

[0020] According to a preferred embodiment, the protective device can be designed as a shield that partially or completely surrounds the receiving unit in the circumferential direction and protrudes axially (along the optical axis of the receiving unit). This allows a suitable protective area to be created. Suitable designs of the protective device can thus be realized.

[0021] According to a preferred embodiment, the protective device can be designed as a cover cap that partially covers the receiving unit. The cover cap can preferably have a viewing window (to ensure the usable area). The viewing window can be formed, for example, by a recess in the material of the cover cap or by a (at least partially) transparent design of the material of the cover cap. The cover cap can be curved, for example, with a cylindrical surface, or straight, for example, with a flat surface. Suitable designs of the protective device can be realized in this way.

[0022] According to a preferred embodiment, the protective device can be electronically altered in its nature. In particular, the protective device can be designed as an element that partially has a transparent / translucent region and partially has a partially translucent or non-translucent region (forming the protective region). The partially translucent or non-translucent region forms the protective region. The protective device is designed such that the partially translucent or non-translucent region (depending on the electronic control of the protective device) can be altered in its size / shape / dimensions and / or its location / position. The protective device is preferably formed by an electronically switchable material or a so-called smart glass.

[0023] According to a further development of the preferred embodiment, the protective device can be electronically modified in such a way that the transmittance of the area of ​​the protective device forming the protective zone can be variably adjusted. For example, the area forming the protective zone can have a transmittance of 40 to 90%, for example, 50 to 70%. The area forming the protective zone can also have a transmittance that changes region-by-region, preferably continuously in the form of a gradient toward the useful zone, for example, increasing or decreasing.

[0024] According to a preferred embodiment, the protected area can be located within the useful area or, alternatively, outside the useful area, in particular, not within a legally required area or only temporarily within it. This ensures particularly good image quality.

[0025] According to a preferred embodiment, a change in the useful range can be a change in the direction of the detection angles and / or the size of the detection angles in the detection range.

[0026] According to a preferred embodiment, a change in the useful range can be generated by changing the readout range of an image sensor of the recording unit, in particular by moving, enlarging / reducing (zooming).

[0027] According to an alternative preferred embodiment, a change in the useful range can be generated by changing an optical element of the recording unit, in particular by optical zoom.

[0028] According to an alternative preferred embodiment, a change in the useful area can be produced by a mechanical change of the receiving unit, in particular by twisting and / or shifting.

[0029] According to a preferred embodiment, a change in the usable range can be carried out manually, in particular in stages or continuously, or automatically.

[0030] According to a preferred embodiment, the image data can be displayed on a display device, in particular on a monitor visible to a user.

[0031] According to a preferred embodiment, the usable area can be changed by a user / driver, in particular by actuating a control element.

[0032] According to a preferred embodiment, an (automatic) change of the usable range can be effected by a driving signal, in particular depending on the driving situation, such as when maneuvering, when reversing, when compensating for inclination, when changing the (sensor) view.

[0033] According to a preferred embodiment, the usable area for monitoring can be changed, particularly by enlarging the usable area. This means that the change in the usable area serves to monitor the area around the vehicle (optical external monitoring), for example, if the user / driver hears something near their vehicle at night. Thus, a larger portion of the detection area or an entire detection area can be displayed for monitoring, and the protective device can be changed accordingly.

[0034] According to a preferred embodiment, a change in the protective device can occur by reacting to environmental influences, in particular environmental influences such as day / night detection, light position detection, brightness detection and / or rain detection.

[0035] This has the advantage that the variable protective device prevents the field of view from being unintentionally restricted (especially in the case of shadows). Furthermore, the protection of the recording unit is always in optimal condition, and image quality is improved because fewer unwanted external influences reach the recording unit, especially the optics, which may have one or more lenses.

[0036] According to a preferred embodiment, the vision system can have an environmental sensor for detecting environmental influences, particularly in the form of a brightness sensor for detecting light irradiation. This makes it possible to react, for example, to the light irradiation of a low-lying sun.

[0037] The environmental sensor can be formed, in particular, by the image sensor of the recording unit or the vision system, on which the detection area or the useful area can be mapped. The image sensor detects the number of incoming photons in a pixel, so that the brightness can be detected locally via the image sensor. This means that bright spots in the image can be directly localized. This has the advantage that no additional brightness sensor (in addition to the image sensor) is required.

[0038] The invention also relates to a control method with a described vision system, wherein a position and / or size of the useful area and a position and / or size of the protection area can be or are set according to a predetermined setting and / or according to a setting to be made by a user. The predetermined setting is understood to be a presetting of the vision system which determines how the protection device is changed depending on the situation (based on previously defined parameters). Situation-dependent can be understood to mean (directly) driving situation-dependent, i.e. in particular depending on the adjustment of the useful area, and / or environmental situation-dependent, i.e. in particular depending on changing environmental influences.Environmental influences can, for example, change as such (e.g., a change in the weather, such as the sun emerging from the clouds) or due to driving signals (e.g., a change in the angle of incidence of the sun due to the vehicle's route (curve, climb, etc.). This makes it possible for positioning (and in particular the overlap of the useable area and the protection area) to be automated and / or performed manually by a user. This has the advantage that manual adjustment remains possible at any time for optimized use, but under normal circumstances, manual intervention is preferably not required.

[0039] According to a preferred embodiment, a position and / or size of the protection area can be or can be adjusted depending on the environmental influences, in particular the light radiation.

[0040] In summary, the invention addresses the problem that known vision systems are subject to glare when the recording unit of the vision system is exposed to unfavorable light, in particular when the sun shines diagonally from behind onto it, and that raindrops can also get onto the recording unit because it is often not adequately protected against weather conditions. This is particularly true for vision systems in which an image section is digitally adjusted, i.e. in which a sub-area of ​​an entire detection area is output as the usable area. For example, if the image section or the readout area is shifted upwards, it can happen that a protective device (such as a so-called sunroof) for protection against environmental influences partially obscures the displayed image.At the same time, it may also happen that in the standard view or with extreme adjustments, for example, when the image is shifted downwards, the protective device does not provide sufficient protection to prevent negative influences on the quality of the display of the detection or usable range. Therefore, particularly due to the possibility of adjusting the usable range, the position of the protective device often has to be selected in such a way that the best possible protection of the recording unit cannot be guaranteed in the standard view, because the protective device would otherwise restrict the usable range in extreme adjustment ranges.

[0041] The invention is explained below with the aid of figures. They show: Fig. 1 to 9 show an operation of a vision system according to the invention, and Fig. 10 to 15 show different embodiments of the vision system according to the invention.

[0042] The figures are merely schematic and serve solely to clarify the invention. Like elements are designated by like reference numerals.

[0043] Fig. Figures 1 to 9 illustrate the basic operation of a vision system 1 according to the present invention. The vision system 1 is particularly suitable for use in a vehicle.

[0044] The vision system 1 has a recording unit 2 for capturing a (maximum) detection area 3. The detection area 3 is captured in particular in the form of image data. The detection area 3 is shown in the figures as a detection cone or, in longitudinal section, as a circular sector or, in its Fig. on an image sensor 9 of the recording unit 2 or the vision system 1 (cf. Fig. 6 to 9) is shown as a rectangle, but can also have other shapes.

[0045] Furthermore, the vision system 1 has a processing unit for outputting the detection area or a partial area of ​​the detection area 3 as a useful area 4. The useful area 4 is shown in the figures as a useful cone or in longitudinal section as a circular sector or Fig. on the image sensor 9 (cf. Fig. 6 to 9) as a rectangle, but can also have other shapes. Preferably, the processing unit can be configured to process the image data recorded by the recording unit 2.

[0046] In addition, the vision system 1 has a protective device 5 for shielding the recording unit 2 as protection against environmental influences U. Such environmental influences can be, for example, sunlight or precipitation. In order to be able to shield the recording unit 2, the protective device 5 is arranged partially within the detection area 3. By arranging the protective device 5 in the detection area 3, a protective area 6 is formed in which a partial area of ​​the detection area 3 is concealed / covered by the protective device 5. This means that the partial area of ​​the detection area 3 covered by the protective device 5 forms the protective area 6. In the protective area 6, the detection area 3 cannot be used because the protective device 5 is located in the detectable image area. This means that only the protective device 5 is displayed / output or is in the image in the protective area 6.

[0047] According to the present invention, the protective area 6, i.e., the area of ​​the detection area 3 covered by the protective device 5, is variably adjustable / changeable / adjustable such that the useful area 4 is or remains at least partially visible. In particular, the protective device 5 is changeable such that, on the one hand, a partial area of ​​the detection area 3 is covered, but, on the other hand, at least a partial area of ​​the useful area 4 remains visible.

[0048] Preferably, the protective device 5 can be variably adjustable with regard to its location / position and / or size / dimensions / shape and / or its nature. This means that the protective area 6, i.e., the area of ​​the detection area 3 covered by the protective device 5, can be changed by variably adjusting the position of the protective device 5 relative to the receiving unit 2 and / or by variably adjusting the size of the protective device 5 and / or by variably adjusting the nature of the protective device 5.

[0049] In particular, the protective device 5 can be configured to be adjusted depending on the usable area 4. This means that the location / position and / or size / dimensions / shape and / or nature of the protective device 5 is controlled depending on the position of the usable area 4. For example, the usable area 4 (relative to a vehicle's longitudinal axis or an optical axis of the recording unit 2) can be adjusted upwards (so-called up-tilting) or sideways (so-called out-panning).

[0050] Preferably, the protective device 5 can be configured to be adjusted when the useful area 4 is adjusted in one direction such that the protective area is changed / moved in the direction in which the useful area 4 was adjusted. In other words, the protective device 5 can, in particular, be controlled such that the protective area 6 changes depending on the position of the useful area 4, preferably moving substantially along with the useful area 4, i.e., moving in the same direction as the useful area 4.

[0051] Fig. 2 to 5 show the functionality of the vision system 1. In Fig. 2 and Fig. 3, the vision system 1 is in a first position, for example, a starting position; the recording unit 2 detects the detection area 3; the processing unit outputs a first partial area of ​​the detection area 3 (or the entire detection area 3) as the useful area 4; the protective device 5 is in a first position, for example, a starting position, in which a second partial area of ​​the detection area 3 is formed as the protective area 6. In Fig. 4 and Fig. 5, the vision system 1 is in a second position, for example an adjustment position; the recording unit 2 records the detection area 3 (as in Fig. 2 and Fig. 3); the processing unit outputs a third sub-area of ​​the detection area 3 (different from the first sub-area) as the useful area 4 (or a modified useful area 4); the protective device 5 is in a second position, for example an adjustment position, in which a fourth sub-area of ​​the detection area 3 (different from the second sub-area) is formed as the protective area 6 (or a modified protective area 6).

[0052] Fig. 6 to 9 show the image sensor 9 of the recording unit 2 or the vision system 1, on which the detection area 3 or the useful area 4 can be imaged. Fig. of detection area 3, the Fig. of the usable area 4 and a Fig. of the protection area 6 (namely the area of ​​the Fig. of the detection area 3 and the useful area 4) is also in Fig. 6 to 9.

[0053] The vision system 1 can preferably have an environmental sensor for detecting environmental influences, in particular in the form of a brightness sensor for detecting light irradiation. The environmental sensor can in particular be formed by the image sensor 9 of the recording unit 2 or the vision system 1, on which the detection area 3 or the useful area 4 can be imaged. This means that the image sensor 9 can preferably serve as the environmental sensor for detecting environmental influences, in particular for detecting light irradiation.

[0054] Preferably, the protective area 6 can be in the first position (cf. Fig. 6) be positioned so that it is outside the useful area 4, but directly adjacent to the useful area 4. Alternatively, the protective area 6 can be in the first position (cf. Fig. 7) should preferably be positioned so that it overlaps (in particular only slightly) with the useful area 4.

[0055] Preferably, the (modified) protection area 6 can be in the second position (cf. Fig. 8) be positioned so that it is outside the (modified) useful area 4, but directly adjacent to the (modified) useful area 4. Alternatively, the (modified) protective area 6 can be in the second position (cf. Fig. 9) should preferably be positioned in such a way that it overlaps (in particular only slightly) with the (changed) usable area 4.

[0056] Preferably, the recording unit 2 can be configured as a camera. This means that the recording unit 2 is prepared / configured to record an image area. In particular, the recording unit 2 has at least one image sensor and one optical element for this purpose. An optical axis of the recording unit 2 is illustrated in the figures. In particular, an area around the vehicle is to be captured.

[0057] In the Fig. In the vision systems 1 shown in Figures 10 to 14, the protective device 5 is coupled so as to be mechanically movable relative to the receiving unit 2. Preferably, a mechanical movement of the protective device 5 relative to the receiving unit 2 can be actuated manually and / or by motor.

[0058] At the Fig. In the embodiment of the vision system 1 shown in Figure 10, the protective device 5 is translationally displaceable relative to the receiving unit 2 (or to a housing 7 in which the receiving unit 2 is accommodated) in order to produce a corresponding adjustment of the protection area 6. The displacement direction V is in Fig. 10. In particular, the protective device 5 is displaceable back and forth relative to the recording unit 2, ie displaceable along the optical axis. The protective device 5 is in the Fig. 10, the protective device 5 is designed as an extendable and retractable roof. Preferably, the protective device 5 can be adjusted via a (linear) motor (not shown), in particular a stepper motor.

[0059] At the Fig. In the embodiment of the vision system 1 shown in Fig. 11, the protective device 5 is translationally displaceable and rotatable relative to the receiving unit 2 in order to produce a corresponding adjustment of the protection area 6. The displacement direction V and the rotation direction R are shown in Fig. 11. In particular, the protective device 5 is displaceable in the lateral direction relative to the receiving unit 2, ie, displaceable transversely to the optical axis. In particular, the protective device 5 is rotatable relative to the receiving unit 2 about a rotation axis that is transverse to the optical axis, in particular rotatable about an axis along the displacement direction. The protective device 5 is in the Fig. 11, the protective device 5 is designed as a shield (or a cover cap) in which a viewing window for the useful area 4 is recessed. The shield has a cylindrical outer surface (with a central axis on the rotation axis) that creates the protective area 6. Preferably, the protective device 5 can be adjusted via a motor 8, in particular a stepper motor.

[0060] At the Fig. In the embodiment of the vision system 1 shown in Fig. 12, the protective device 5 is rotatable relative to the receiving unit 2 in order to produce a corresponding adjustment of the protection area 6. The direction of rotation R is in Fig. 12. In particular, the protective device 5 is rotatable relative to the recording unit 2 about a rotation axis that is offset parallel to the optical axis. The protective device 5 is in the Fig. In the embodiment shown in Figure 12, the protective device 5 is designed as a shield (or a cover cap) in which a viewing window for the useful area 4 is recessed. The shield has a flat surface that creates the protective area 6. Preferably, the protective device 5 can be adjusted via the motor 8, in particular a stepper motor.

[0061] At the Fig. In the embodiment of the vision system 1 shown in Figure 13, the protective device 5 is rotatable relative to the receiving unit 2 in order to produce a corresponding adjustment of the protection area 6. The direction of rotation R is in Fig. 13. In particular, the protective device 5 is rotatable relative to the recording unit 2 about a rotation axis corresponding to the optical axis. The protective device 5 is in the Fig. 13, the protective device is designed as a shield that is open on one side in the circumferential direction for the usable area 4. The shield has a roof section that projects axially (along the optical axis). Preferably, the protective device 5 can be adjusted via the motor 8, in particular a stepper motor.

[0062] At the Fig. In the embodiment of the vision system 1 shown in Figure 14, the protective device 5 is translationally displaceable relative to the receiving unit 2 in order to produce a corresponding adjustment of the protection area 6. The displacement direction V is in Fig. 14. In particular, the protective device 5 is displaceable back and forth relative to the recording unit 2, ie displaceable along the optical axis. The protective device 5 is in the Fig. 14, the protective device 5 is designed as an extendable and retractable shield that surrounds the receiving unit 2 in the circumferential direction, in particular a substantially tubular shield. The shield has two axially projecting (along the optical axis) roof sections. The roof sections are arranged opposite one another in the circumferential direction. Preferably, the protective device 5 can be adjusted via the (linear) motor 8, in particular a stepper motor.

[0063] In the Fig.In the vision system 1 shown in Figure 15, the protective device 5 is electronically variable in its configuration relative to the recording unit 2. This means that the protective device 5 is electronically variable in its configuration such that the position and / or size of a translucent region of the protective device 5 and a partially translucent or non-translucent region of the protective device 5 are variably adjustable. In particular, the protective device 5 is designed as an element that is partially transparent / translucent and partially partially translucent or non-translucent. The partially translucent or non-translucent region forms the protective region 6.The protective device 5 is designed such that the partially translucent or non-translucent area (depending on the electronic control of the protective device 5) can be varied in its size / shape / dimensions and / or its location / position and / or its light permeability / transmittance. The protective device 5 is preferably formed by an electronically switchable material or a so-called smart glass. List of reference symbols 1 vision system 2 Recording unit 3 Detection range 3' Illustration of the detection area 4 Usable area 4' Illustration of the usable area 5 Protective device 6 Protection area 6' Illustration of the protection area 7 housings 8 Engine 9 image sensor V Shift direction R rotation axis U Environmental influences

Claims

[1] Digital vision system (1) for a vehicle, comprising a recording unit (2) for detecting a detection area (3), a processing unit for outputting a selectable partial area of ​​the detection area (3) as a useful area (4), and a protective device (5) for shielding and / or covering the recording unit (2) as protection against environmental influences, wherein the protective device (5) is arranged partially within the detection area (3) and forms a protective area (6) in which a partial area of ​​the detection area (3) is covered by the protective device (5), characterized by that the protective area (6) is variably adjustable so that the useful area (4) remains at least partially visible, wherein the protective device (5) is designed to be adjusted depending on the useful area (4), in particular to move substantially with an adjustment of the useful area (4). [2] Digital vision system (1) according to claim 1, characterized by that the protective device (5) is variably adjustable with regard to its position and / or size and / or its nature. [3] Digital vision system (1) according to claim 1 or 2, characterized by that the protective device (5) is designed as a shield that partially or completely surrounds the receiving unit (2) in the circumferential direction and projects axially. [4] Digital vision system (1) according to one of claims 1 to 3, characterized by that the protective device (5) is mechanically movably coupled relative to the receiving unit (2). [5] Digital vision system (1) according to one of claims 1 to 4, characterized by that a mechanical movement of the protective device (5) relative to the receiving unit (2) can be actuated manually and / or by motor. [6] Digital vision system (1) according to one of claims 1 to 5, characterized by that the protective device (5) is rotatable and / or displaceable relative to the receiving unit (2). [7] Digital vision system (1) according to one of claims 1 to 6, characterized by that the protective device (5) can be electronically changed in its nature such that the position and / or size of a translucent area of ​​the protective device (5) and a partially translucent or non-translucent area of ​​the protective device (5) forming the protective area (6) can be variably adjusted. [8] Digital vision system (1) according to claim 7, characterized by that the protective device (5) can be electronically changed in its nature so that a degree of transmission of the area of ​​the protective device (5) forming the protective area (6) can be variably adjusted. [9] Control method with the digital vision system (1) according to one of claims 1 to 8, characterized bythat a position and / or size of the useful area (4) and a position and / or size of the protection area (6) are adjustable according to a predetermined setting and / or according to a setting to be made by a user. [10] Control method according to claim 9, characterized by that the vision system has an environmental sensor (9) for detecting environmental influences, in particular for detecting light irradiation, wherein a position and / or size of the protection area (6) can be adjusted depending on the environmental influences, in particular the light irradiation.

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