CN112911096B

CN112911096B - Image shooting device, light supplementing module and equipment

Info

Publication number: CN112911096B
Application number: CN202011644954.8A
Authority: CN
Inventors: 郭王松; 张庆
Original assignee: Hangzhou Haikang Auto Software Co ltd
Current assignee: Hangzhou Haikang Auto Software Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2023-04-28
Anticipated expiration: 2040-12-31
Also published as: CN112911096A

Abstract

The embodiment of the application discloses image shooting device, light filling module and equipment relates to image monitoring and takes technical field, and image shooting device includes: the shell is provided with an imaging module and a light supplementing module, the light supplementing module is arranged on the side portion of the imaging module, the light supplementing module is at least used for forming a first light supplementing area and a second light supplementing area with different illumination intensities, the illumination intensity of the second light supplementing area is smaller than that of the first light supplementing area, and at least partial areas of the first light supplementing area and the second light supplementing area are overlapped with the view field range of the imaging module. Two light supplementing areas with different illumination intensities are formed through the light supplementing module, and corresponding shooting objects, such as faces and license plates, can be respectively given with light supplementing with proper illumination intensity, and can assist in improving the image shooting quality at least to a certain extent, so that the recognition effect of vehicles and faces is improved conveniently.

Description

Image shooting device, light supplementing module and equipment

Technical Field

The present invention relates to the field of image capturing technologies, and in particular, to an image capturing device, a light supplementing module, and an apparatus.

Background

In a vehicle monitoring scene, for example, some vehicles or devices such as a barrier gate are provided with an image monitoring device for monitoring other vehicles and related drivers and passengers. When the illumination of the ambient light at night is insufficient, if clear information such as license plate numbers, vehicle colors and the like and facial features of front drivers and passengers are required to be obtained, in order to ensure the follow-up vehicle information and face recognition effect, a light supplementing device is required to be equipped for the monitoring camera device to supplement light so as to obtain a clearer image.

The inventor finds in the process of realizing the invention: because the face recognition and license plate recognition functions are required to be synchronously carried out, the license plate is obviously perceived by light, the license plate can be illuminated by low light level at night, and the face can be seen by strong illumination. If the monitoring camera device adopts the direct light filling mode with the same brightness, the situation that the recognition effect is influenced due to the fact that the license plate is excessively exploded when the face is clear and the recognition effect is influenced due to the fact that the face is darkly hidden when the license plate is clear can occur in the shot image.

Disclosure of Invention

In view of this, the embodiment of the application provides a light filling lamp and image capturing device, light filling module and equipment, can assist to improve image capturing quality at least to a certain extent to be convenient for follow-up improvement vehicle and human face's recognition effect.

In order to achieve the above purpose, the present application adopts the following technical scheme:

the embodiment of the application provides an image shooting device, which comprises an outer shell, be equipped with formation of image module and light filling module in the shell, the light filling module is located the lateral part of formation of image module, the light filling module is used for forming different illumination intensity's first light filling region and second light filling region at least, the illumination intensity of second light filling region is less than the illumination intensity of first light filling region, just first light filling region and second light filling region respectively at least each have partial region with the visual field scope of formation of image module overlaps.

Optionally, the light supplementing module includes one or more light supplementing lamps, a light transmission window is arranged on a light emitting path of the light supplementing lamps, the light transmission window has a first light transmission area and a second light transmission area, the first light transmission area is located above the second light transmission area, and the light transmittance of the first light transmission area is greater than that of the second light transmission area; the light rays emitted from the first light-transmitting area form the first light-supplementing area, and the light rays emitted from the second light-transmitting area form the second light-supplementing area.

Optionally, the light supplementing module includes at least two light supplementing lamps, a light transmission window is arranged on a light emitting path of each light supplementing lamp, the light transmission window on the light emitting path of each light supplementing lamp is provided with a first light transmission area and a second light transmission area, the first light transmission area is located above the second light transmission area, and the light transmittance of the first light transmission area is larger than that of the second light transmission area; the light rays emitted from the first light-transmitting area form the first light-supplementing area, and the light rays emitted from the second light-transmitting area form the second light-supplementing area.

Optionally, the second light-transmitting area of the light-transmitting window adopts a semi-shading treatment.

Optionally, the semi-shading treatment includes that a second light-transmitting area of the light-transmitting window is made of semitransparent material, or a semitransparent coating or a film is arranged on the second light-transmitting area.

Optionally, the light supplementing module includes at least two light supplementing lamps, a light transmission window is arranged on a light emitting path of one light supplementing lamp, the light transmission window on the light emitting path of the one light supplementing lamp is a polarized light structural element for deflecting and emitting light irradiated on the light transmission window to a preset direction, the light emitted from the polarized light structural element and a part of light of the other light supplementing lamp are overlapped to form the first light supplementing region, and the other part of light of the other light supplementing lamp forms the second light supplementing region.

Optionally, the polarizing structure element is a polarizer, an incident surface of the polarizer is perpendicular to an optical axis of the light supplementing lamp, an exit surface of the polarizer has an inclined plane, and an inclination direction of the inclined plane is consistent with a deflection direction of the exiting light.

Optionally, the polarizing structure element is a polarizer, a sawtooth structure is provided on an exit surface of the polarizer, the sawtooth structure includes a plurality of connected tooth grooves, the tooth grooves include a first side wall and a second side wall connected with one end of the first side wall, and an inclination direction of the first side wall is consistent with a deflection direction of the exiting light.

Optionally, the polarizing structure element is a polarizer, the polarizer is obliquely arranged on the light emitting path of the light supplementing lamp, and the oblique direction of the polarizer is consistent with the deflection direction of the emitted light.

Optionally, a convex lens cup is further arranged between the light supplementing lamp with the light transmission window being the polarized light structural element and the polarized light structural element.

Optionally, the light supplementing module at least comprises a light supplementing lamp, the imaging module comprises a lens, at least a first separation cavity and a second separation cavity are arranged in the shell, the light supplementing lamp is arranged in the first separation cavity, and the imaging module is arranged in the second separation cavity;

The front end of the shell is provided with an integrated lens, the integrated lens is provided with a light-transmitting window area corresponding to the light supplementing lamp, the lens is provided with a lens light-transmitting area corresponding to the lens, and the front end of the shell is provided with a shading part at least corresponding to the integrated lens and positioned in an area between the light-transmitting window area and the lens light-transmitting area.

Optionally, the length of the light shielding part is greater than or equal to the maximum horizontal distance between the incident point of the light ray of the light compensating lamp entering the integrated lens from the edge of the light transmitting window area near the side of the light transmitting area of the lens and the light spot reflected to the incident surface of the integrated lens at the emergent surface of the integrated lens.

Optionally, the transparent area and/or the transparent window area of the lens are rectangular.

Optionally, the imaging module comprises an image sensor and a lens arranged in front of the image sensor, and the vertical size of the image shot by the image sensor is larger than the horizontal size.

Optionally, a glue overflow groove is formed in the end face of the shell, used for installing the integrated lens.

Optionally, a limiting protruding portion for limiting the adhesive thickness is further arranged on the shell and on the end face for installing the integrated lens.

Optionally, when the imaging module is 2-4 meters away from the shooting object, the overlapping part of the first light supplementing area and the field of view range of the imaging module is located above the preset position of the shooting object, and the overlapping part of the second light supplementing area and the field of view range of the imaging module is located below the preset position of the shooting object.

Optionally, the predetermined position is a position on the shooting object with a height of 0.8-1.2 m from the ground plane.

In a second aspect, a further embodiment of the present invention provides a light supplementing module, including: the light supplementing lamp is characterized in that a light transmission window is arranged on a light ray emergent path of the light supplementing lamp and used for forming a first light supplementing region and a second light supplementing region with different illumination intensities by light rays, and the illumination intensity of the second light supplementing region is smaller than that of the first light supplementing region.

In a third aspect, a further embodiment of the present invention provides a light supplementing module, including: the light transmission window is arranged on the light ray emergence path of one light supplementing lamp, the light transmission window is a polarized light structural element used for deflecting and emergent light rays irradiated on the light transmission window to a preset direction, the emergent light rays from the polarized light structural element are overlapped with part of the light rays of the other light supplementing lamp to form a first light supplementing area, and the other part of the light rays of the other light supplementing lamp form a second light supplementing area.

In a fourth aspect, the present invention further provides an image capturing apparatus, including a carrier, on which the image capturing device according to any one of the first aspects is mounted at a first height position from a ground plane.

Compared with the prior art in which the monitoring camera device adopts the direct light supplementing mode with the same brightness, the image shooting quality is not influenced due to the fact that the sensing characteristics of different shooting objects to light rays cannot be considered, and the image shooting device, the light supplementing module and the image monitoring camera device provided by the embodiment of the invention consider the sensing characteristics of light rays required by shooting of license plates and faces of drivers, and the adopted light supplementing module is at least used for forming a first light supplementing area and a second light supplementing area with different illumination intensities, the illumination intensity of the second light supplementing area is smaller than that of the first light supplementing area, the first light supplementing area corresponds to the faces of the drivers, the second light supplementing area corresponds to the license plates with proper illumination intensity, and at least partial areas of the first light supplementing area and the second light supplementing area overlap with the view field range of the imaging module so as to realize the respective light supplementing of different shooting objects, at least assist in improving the image shooting quality to a certain extent, and thus the recognition effect of the vehicles and the faces can be improved conveniently.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural diagram of an embodiment of an image capturing device according to the present application;

FIG. 2 is a schematic view of an optical path of an embodiment of an image capturing device according to the present application;

FIG. 3 is a schematic view of the light supplementing region and the photographing field region formed in FIG. 2;

FIG. 4 is a schematic structural diagram of another embodiment of an image capturing device according to the present application;

FIG. 5 is a schematic view of a light supplementing region and a shooting field region of the image capturing device in FIG. 4;

FIG. 6 is a schematic perspective view of a light supplementing region and a shooting field region of the image capturing device in FIG. 4;

FIG. 7 is a schematic structural diagram of an image capturing device according to another embodiment of the present application;

FIG. 8 is a schematic diagram of a light path of a light beam for light supplement in an embodiment of the image capturing device in FIG. 7;

FIG. 9 is a schematic view of a light supplementing region and a shooting field region formed by the image shooting device in FIG. 7;

FIG. 10 is a schematic diagram illustrating a light supplementing region and a view field region of the image capturing device in FIG. 7;

FIG. 11 is a schematic structural diagram of an image capturing device according to another embodiment of the present application;

FIG. 12 is a schematic view of a partial cross-sectional structure of an embodiment of an image capture device of the present application;

FIG. 13 is a schematic structural diagram of another embodiment of an image capturing device according to the present application;

fig. 14 is a schematic partial structure of an embodiment of an image capturing device according to the present application.

Detailed Description

Embodiments of the present application are described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are merely some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without making any inventive effort, are intended to be within the scope of the present application.

To assist in understanding the present application, a brief description of the related art is provided below:

at present, most intelligent cameras only have face recognition or license plate recognition functions, and meanwhile, few devices with the two functions are few, and some intelligent cameras with the double functions of face recognition and license plate recognition are mainly applied to a gateway or movable devices, such as vehicles.

The inventor finds in the process of realizing the invention: because the face recognition and license plate recognition functions are required to be synchronously carried out, the license plate is obviously perceived by light, the license plate can be illuminated by low light level at night, and the face can be seen by strong illumination. The current image shooting device generally adopts a direct light supplementing mode with the same brightness, so that the situation that when the face is clear, the license plate is excessively exploded and cannot be identified, and when the license plate is clear, the face is darkly hidden and cannot be identified can occur.

To the above-mentioned problem that exists among the prior art, the technical scheme of this application starts from the structure of the light filling lamp that image shooting device adopted, makes the light filling lamp form different light filling regions to the light of adopting different intensity to face and license plate is light filling respectively, thereby can improve face and license plate and carry out image quality that image shot in step.

Referring to fig. 1 to 11, an image capturing device provided in an embodiment of the present application is suitable for use in an application scenario of image capturing and image recognition technology; in particular, the method is also suitable for synchronously shooting objects with different light sensing characteristics in dark environments, such as license plates and faces of drivers and passengers.

The image photographing device includes: the light supplementing module 130 is arranged on the side portion of the imaging module 110, the light supplementing module 130 is at least used for forming a first light supplementing area 210 and a second light supplementing area 220 with different illumination intensities, the illumination intensity of the second light supplementing area 220 is smaller than that of the first light supplementing area 210, and at least partial areas of the first light supplementing area 210 and the second light supplementing area 220 are overlapped with the field of view range 111 of the imaging module 110.

The image capturing device may be a camera (hereinafter, for convenience of description, referred to as an image capturing device, also referred to as a camera), the imaging module 110 includes an image sensor and a lens, and the field of view 111 of the imaging module 110 may also be referred to as a capturing field of view; generally, on the premise of a certain object distance, the larger the field angle is, the larger the field range 111 is; conversely, the smaller.

In some embodiments, the second light-compensating region 220 is at least partially below the first light-compensating region 210; for example, the method is applied to image shooting partition light filling with an up-down azimuth relationship between a license plate and a driver and the like.

In fig. 6 and 10, the first light-compensating region 210 is a circular region in the drawing, the second light-compensating region 220 is a large arc region in the drawing, and the field of view range (or referred to as shooting field of view) 111 of the imaging module is a rectangular region in the drawing.

In application embodiments where some image capture devices are installed on a mobile device, such as an unmanned patrol car, for security patrol checking of vehicles within jurisdictions; according to the actual photographed object, such as a vehicle, the position of the license plate of the vehicle is at a different height from the position of the face of the driver, so the critical positions 230 of the first light-compensating region 210 and the second light-compensating region 220 need to be determined according to the height and the object distance of the specific photographed part of the photographed object from the ground plane. In some embodiments, when the imaging module 110 is 2-4 meters away from the subject, the overlapping portion of the first light compensating region 210 and the field of view range 111 of the imaging module 110 is located above the predetermined position of the subject, and the overlapping portion of the second light compensating region 220 and the field of view range 111 of the imaging module 110 is located below the predetermined position of the subject. The preset position is the critical position, and the preset position is the position with the height of 0.8-1.2 m from the ground plane on the shooting object.

In some embodiments, the license plate of most vehicles is typically below a height of 1m, while the position of the face is typically above 1m and below a height of 2m (except for young children); therefore, based on the position characteristics of the two shooting parts, the azimuth of the image sensor can be vertically installed, namely, the image is vertically output; in some embodiments, the imaging module 110 includes an image sensor and a lens disposed in front of the image sensor, and the vertical size of the image captured by the image sensor is greater than the lateral size. In this way, the distribution characteristics of the shooting object can be well adapted, and a first light supplementing area 210 is formed in the area of the shooting object higher than 1m for face recognition; a second light supplementing region 220 is formed at a region lower than 1m for license plate recognition. Since the light intensity of the light emitted from the first light-transmitting region is greater than the light intensity of the light emitted from the second light-transmitting region, the first light-compensating region 210 formed in the different position regions is a strong light-compensating region, and the second light-compensating region 220 is a weak light-compensating region. Therefore, the face and the license plate can be synchronized and different in light supplementing, and the shooting quality of the image can be improved to a certain extent.

It should be noted that, in this case, the predetermined position (i.e., the critical position) is taken as an example of the height 1m from the ground plane, and it is known from the foregoing description that the value may be different according to the characteristics of the photographed object, and thus, the value is merely schematically illustrated and is not considered as being limited to the predetermined position value that is specifically applicable to the embodiment of the present invention.

According to the image shooting device provided by the embodiment of the application, the sensing characteristics of light required by shooting the license plate and the face of the driver are considered, and the adopted light supplementing module 130 is at least used for forming the first light supplementing area 210 and the second light supplementing area 220 with different illumination intensities, at least part of the second light supplementing area 220 is positioned below the first light supplementing area 210, the illumination intensity of the second light supplementing area 220 is smaller than that of the first light supplementing area 210, wherein the first light supplementing area 210 corresponds to the face of the driver, the second light supplementing area 220 corresponds to the license plate and supplements light with proper illumination intensity, and at least part of each of the first light supplementing area 210 and the second light supplementing area 220 overlaps with the field of view range 111 of the imaging module 110, so that different shooting objects can be respectively supplemented with light, the image shooting quality can be improved in an auxiliary manner at least to a certain extent, and the recognition effect of the vehicle and the face can be improved conveniently.

Of course, based on the technical concept of the partition light filling to improve the image shooting quality, the scheme can also be used in some other non-vehicle shooting and recognition scenes, and the application scenes and the corresponding technical effects of the license plate and the face recognition of the vehicle are for convenience of description and cannot be regarded as limiting the technical scheme of the embodiment of the invention and the application scenes and the technical effects thereof.

In addition, it should be noted that, in the solution described in the embodiments of the present invention, the light compensating module is at least used to form the first light compensating area and the second light compensating area, and for convenience and brevity, the description is basically based on the two light compensating areas. It can be understood that based on the technical concept of carrying out regional light filling on the shooting object to improve the image shooting quality, three or four or even more light filling areas can be formed according to specific scene needs so as to adapt to different light perception characteristics of different shooting objects of more image shooting or scene identification, thereby carrying out light filling pertinently and respectively so as to improve the shooting quality of the image and further facilitate the subsequent improvement of the identification effect of the target objects (or target characteristics) in the shooting object.

The light compensating module 130 may include one or more light compensating lamps; the number of specific light compensating lamps is based on the actual demand, and the actual demand can include light compensating intensity, installation space and the like. For example, in some scenes where light supplement at a longer distance is required, since the light supplement intensity of a single light supplement lamp is limited, a plurality of light supplement lamps need to be provided; otherwise, one may be used. However, in some scenes where installation space is limited, for example, the number of the light supplement lamps is too large, the installation space is insufficient, and thus, a large number of the light supplement lamps cannot be provided.

Specifically, referring to fig. 1 to 6, a light-transmitting window 131 is disposed on a light-emitting path of the light-compensating lamp, the light-transmitting window 131 has a first light-transmitting region 1311 and a second light-transmitting region 1312, the first light-transmitting region 1311 is located above the second light-transmitting region 1312, and the light transmittance of the first light-transmitting region 1311 is greater than the light transmittance of the second light-transmitting region 1312; wherein the light emitted from the first light-transmitting region 1311 forms the first light-compensating region 210, and the light emitted from the second light-transmitting region 1312 forms the second light-compensating region 220.

In order to adapt to most of use environments, 2 or more light supplementing lamps are generally designed and used, so that specific implementation modes of the structural scheme capable of realizing partition light supplementing can be combined. For convenience of description, in the embodiment with multiple light compensating lamps, the following two structural schemes are taken as examples, and of course, more than two light compensating lamps may be used.

In some embodiments of the light-compensating module 130 having at least two light-compensating lamps, for example, the light-transmitting windows 131 are respectively disposed in front of the at least two light-compensating lamps, and each of the two light-transmitting windows 131 has a first light-transmitting region 1311 and a second light-transmitting region 1312, and each of the first light-transmitting region 1311 and the second light-transmitting region 1312 has light transmission; as the number of the light compensating lamps increases, the light intensities of the first light compensating region 210 and the second light compensating region 220 are enhanced, and the image recognition at a longer distance can be realized.

In addition, in this embodiment, a control device for controlling the light-compensating switch may be further provided to turn on one or more light-compensating lamps according to the actual light-compensating requirement. For example, when the shooting object is closer to the camera, only one light compensating lamp can be turned on, and when the shooting object is farther from the camera, two or more light compensating lamps can be turned on to better adapt to the light compensating requirement of image shooting.

Of course, in some embodiments, the maximum output light amount of the light compensating lamp may also be adjusted by hardware design and software control, and those skilled in the art may set the maximum output light amount according to the technical concept of the present invention, and the maximum output light amount may be set by themselves according to needs in combination with the prior art, so as to highlight the gist of the present invention, which is not described herein.

Referring to fig. 4, in an embodiment in which the light-compensating module 130 includes at least two light-compensating lamps, the light transmittance of the second light-transmitting region 1312 of the light-transmitting window 131 disposed in front of one of the light-compensating lamps 132 is 0 (obviously, the light transmittance of the first light-transmitting region is also consistent with that of the second light-transmitting region, which is greater than that of the first light-transmitting region), i.e. the shielding process; the other light compensating lamp 133, which cooperates with the first light compensating region 210 and the second light compensating region 220, is provided as either a light transmitting window 131 of one light transmitting region or as the light transmitting window 131 having two light transmitting regions in the present invention, but the light transmittance of the second light transmitting region 1312 of the light transmitting window 131 of the light compensating lamp is required to be greater than 0.

In some embodiments, the light compensating module further comprises at least one infrared light compensating lamp, wherein the light transmitting window 134 of the infrared light compensating lamp is smaller than the light transmitting windows 131 of the

light compensating lamps

132 and 133.

The second light-transmitting region 1312 of the light-transmitting window 131 is semi-light-shielding. In this way, the light intensity transmitted from the second light-transmitting region 1312 can be reduced, so that two light-supplementing regions with different light intensities can be formed.

The second light-transmitting region 1312 including the light-transmitting window 131 is made of a translucent material, for example, an optical material such as translucent resin or glass, which is manufactured by a certain process, for example, sanding.

Alternatively, the semi-opaque treatment may include providing a translucent coating on the second light-transmitting region 1312, for example, spraying paint or ink on the surface of an optical device such as glass or resin by a spraying process, or printing ink on the surface of an optical device such as glass or resin by a printing process.

Or a translucent adhesive film is provided on the second light-transmitting region 1312, and the translucent adhesive film is adhered to the surface of an optical device such as glass or resin, for example, by an adhesive process.

Referring to fig. 4 to 6, in some embodiments, for example, in the at least two light-compensating schemes shown in fig. 4, the second light-transmitting region 1312 of one light-compensating lamp located in the lower half is light-shielded (may also be considered as light-shielding), and only the first light-transmitting region 1311 located in the upper half is allowed to emit light, which is overlapped with part of the light of the other light-compensating lamp to form a first light-compensating region 210 with strong illumination, for face recognition, and the rest of the light of the other light-compensating lamp forms a second light-compensating region 220 with weak illumination, for license plate recognition.

The ratio of the first transparent area 1311 to the second transparent area 1312 of the transparent window 131 is also related to the object distance and the positions of different parts of the photographed object, and in some application environments of the present invention: in a dark environment, an object distance of 3m is defined, a height of more than 1m belongs to a face recognition area, a license plate recognition area is defined below 1m, and in combination with an actual installation angle of a camera, the light transmission window 131 is shielded by about 50% and is opened by about 50%, namely the first light transmission area 1311 and the second light transmission area 1312 respectively occupy about 50%.

In the scheme of shielding the second light-transmitting area 1312, the second light-transmitting area 1312 can be independently designed into an adjustable light-blocking component, and the proportion of the first light-supplementing area 210 for face recognition and the second light-supplementing area 220 for license plate recognition can be changed by adjusting the position of the light-blocking component, so that the adaptability is better in the actual use process; for example, in the case that the photographing object is a truck or a car, the height positions of the car license plate and the cab are different from those of the truck, in order to enable the image photographing device to adapt to the image recognition of two vehicles with different specifications, the requirement of the image recognition of the corresponding vehicle on the photographed image can be adapted by adjusting the up-down ratio of the light blocking component.

It can be appreciated that, in the foregoing specific implementation manner of implementing the light filling of the first light filling area 210 and the second light filling area 220, the second light transmitting area 1312 adopts the half-shielding or shielding process, so that a portion of the light emitted by the light filling lamps is not effectively utilized and light energy loss occurs.

Thus, referring to fig. 7-11, in other alternative embodiments, the light compensating module 130 includes at least two light compensating lamps 140 (note that the light compensating lamps in this embodiment have different reference numerals from the light compensating lamp reference numerals in the previous embodiment drawings for distinction), and in some embodiments, at least one light compensating lamp is disposed on each side of at least the image sensor; the light emitting path of one light supplementing lamp is provided with a light transmitting window 131, the light transmitting window 131 on the light emitting path of one light supplementing lamp is provided with a polarized light structural element for deflecting and emitting the light irradiated onto the light transmitting window 131 to a preset direction, the light emitted from the polarized light structural element is overlapped with a part of the light of the other light supplementing lamp to form the first light supplementing region 210, and the other part of the light of the other light supplementing lamp forms the second light supplementing region 220.

In some application scenarios in which the illumination intensity of the first light-compensating region needs to be greater than the illumination intensity of the second light-compensating region, the predetermined direction is obliquely upward and forward.

In this embodiment, by disposing a polarization structure element on the light emitting path of at least one light compensating lamp, when light is emitted to the incident surface of the polarization structure element, the light is deflected and refracted on the emitting surface, and overlapped with a part of light of another light compensating lamp to form the first light compensating region 210, and another part of light of the other light compensating lamp forms the second light compensating region 220. In this way, the loss of light energy can be greatly reduced relative to the semi-opaque or opaque approach described above. Further, on the premise of achieving the same light supplementing effect, the scheme can achieve the expected light supplementing effect by adopting the light supplementing lamp with smaller power, so that energy consumption can be reduced.

Furthermore, as the power consumption is reduced, the heat productivity is synchronously reduced, so that the heat dissipation burden of the whole machine of the image shooting device can be reduced, the overall dimension of the product can be reduced to a certain extent, the design and manufacturing cost can be reduced, the reliability of the whole machine can be improved, and the service life of the whole machine can be prolonged.

In some embodiments of the present invention (not shown), the polarizing structure element is a polarizer, an incident surface of the polarizer is perpendicular to an optical axis of the light-compensating lamp, an exit surface of the polarizer has an inclined plane, and an inclination direction of the inclined plane is consistent with a deflection direction of the outgoing light.

In some embodiments, the slope of the slope is positive with respect to the light axis of the light supplement lamp. The slope is a term in mathematical discipline, and may be used to represent the inclination direction and gradient of a straight line relative to a horizontal plane, where the slope is generally three cases, namely positive (indicating that the straight line gradually rises along the positive direction of the abscissa axis), negative (indicating that the straight line gradually falls along the positive direction of the abscissa axis), and 0 (indicating that the straight line does not change along the positive direction of the abscissa axis).

In this embodiment, the incident surface of the polarizer is perpendicular to the optical axis of the light-compensating lamp, the exit surface of the polarizer has an inclined plane, and the inclined direction of the inclined plane is consistent with the deflection direction of the exiting light, so that the light irradiated by the light-compensating lamp on the polarizing structural element exits in the predetermined oblique upward front direction, and is overlapped with a portion of the light of another light-compensating lamp to form the first light-compensating region 210.

If the polarizer is designed into a wedge-shaped structural member with an inclined plane, the whole polarizer needs to be thicker in order to meet the requirement of the light deflection angle of the emergent surface, and the slope of the inclined plane can be larger so as to meet the requirement of the light deflection.

Referring to fig. 7 and 8, in another alternative embodiment, the polarizing structure element is a polarizer P, and a saw-tooth structure 1313 is disposed on an exit surface of the polarizer P, the saw-tooth structure 1313 includes a plurality of connected tooth grooves 1314, the tooth grooves 1314 include a first sidewall 1315 and a second sidewall 1316 connected to one end of the first sidewall 1315, and an inclination of the first sidewall 1315 with respect to an optical axis of the light filling lamp is positive.

Compared with the embodiment designed as a complete wedge-shaped structural member, the embodiment designs the surface of the emergent surface of the polaroid into a sawtooth-shaped structure formed by connecting a plurality of tooth grooves, and can reduce the thickness of the polaroid while meeting the requirement of deflecting emergent light at a preset deflection angle, so that the whole structure of the image shooting device is reduced.

In some embodiments, the polarizing structure element is a polarizer, and the polarizer is obliquely disposed on the light emitting path of the light compensating lamp, and the oblique direction of the polarizer is consistent with the deflection direction of the light emitting beam. The polarized light structural element in front of one light supplementing lamp, namely the polaroid, is obliquely arranged on the light emergent path of the light supplementing lamp, and the inclined slope relative to the optical axis of the light supplementing lamp is positive for installation, so that the polarized light emergent light can be deflected, a first light supplementing region 210 is formed by the polarized light structural element and part of light of the other light supplementing lamp, and the light supplementing purpose of different illumination intensities of different parts of a shooting object can be realized.

In order to enhance the illumination intensity of the first light compensating region 210, in the case of using at least two light compensating lamps, a convex lens cup 135 is further disposed between the light compensating lamp, in which one of the light transmitting windows 131 is a polarizing structural element, and the polarizing structural element, as shown in fig. 7. The convex lens lamp cup 135 is arranged in front of the light supplementing lamp, so that a small-angle spotlight beam is formed, and then the emergent light is deflected by a preset angle to irradiate obliquely forwards and upwards through the polarized light structural element, and the large-angle divergent light beam emitted by the other light supplementing lamp covers the whole picture; the deflected small-angle light beam and the upper half part of the large-angle light beam are overlapped to form a first light supplementing area 210 with strong light supplementing effect, and the first light supplementing area is used for face recognition light supplementing; the lower half part of the large-angle beam forms a second light supplementing area 220 with weak light supplementing, and is used for license plate recognition light supplementing; as shown in fig. 10 and 11.

In some embodiments, in order to prevent the built-in light compensating lamp from interfering with the lens, the lens at the front end of the imaging module 110 and the light compensating lamp are mostly physically isolated, so that the light of the light compensating lamp cannot directly reach the surface of the lens to avoid glare from affecting the image quality.

However, the above-mentioned physical isolation scheme generally designs the light-permeable window (commonly called as a protective lens) of the light-compensating lamp and the lens separately, i.e. in a split type structure. The resulting adverse effects are: the structure is complex, the parts are more, and the manufacturing cost is high.

Thus, referring to fig. 11 and 12, in other embodiments of the present invention, the light compensating module 130 includes at least one light compensating lamp, and in the embodiment shown in fig. 12, two light compensating lamps 132, the imaging module 110 includes a lens, at least a first compartment 101 and a second compartment 102 are disposed in the housing 100, the light compensating lamps 132 are disposed in the first compartment 101, and the imaging module 110 is disposed in the second compartment 102.

The front end of the housing 100 is provided with an integrated lens 103, the integrated lens corresponds to the light supplementing lamp and is provided with a light transmission window area 104, the lens corresponds to the housing 100 and is provided with a lens light transmission area 105, and the front end of the housing 100 at least corresponds to the integrated lens, an area between the light transmission window 131 area and the lens light transmission area is provided with a shading part 106, so that light emitted from the light supplementing lamp is prevented from entering the integrated lens, and reflected light formed on the emergent surface of the integrated lens cannot reflect to reach the surface of the lens, thereby preventing the phenomenon of light channeling.

Wherein, in order to ensure the light transmission effect, the integrated lens material can be glass or transparent resin; the specific selection can be determined according to the actual use situation: if better wear resistance is required, certain impact resistance is also required, and tempered glass can be considered to be used; the use of a composite sheet of PMMA+PC (wherein PMMA is commonly known as acrylic; PC is commonly known as polycarbonate) for the hardening treatment is also contemplated, giving consideration to impact and abrasion resistance; so that the impact resistance is improved.

The integral lens adopts a scheme of partial light transmission: in some embodiments, where light transmission is not required, the back surface is subjected to shading treatment, only a region partially requiring light transmission is reserved, and for a light transmission window region for light supplementing, full-transmission or semi-transmission or partial-transmission treatment is performed according to the specific light supplementing scheme of the previous embodiment. Thus, the entire integrated lens surface is divided into three parts, namely a lens light-transmitting region 104, a light-compensating light-transmitting region 105 and a light-opaque region 107, wherein a part of the light-opaque region 106 forms the light-shielding portion 106.

In this embodiment, through adopting integral type lens structure, to be about to light filling lamp printing opacity, camera lens printing opacity and prevent that scurrying the function such as light to realize on same big lens, process structure is simplified, reduce cost, and can avoid the problem that influences image shooting quality because of scurrying light to a certain extent.

The foregoing has described the problem of light channeling, it can be understood that when the light emitted by the light supplementing lamp is transmitted through the lens, most of the light is transmitted through the lens to illuminate the front object scene, and other small part of the light is reflected inside the lens and possibly directly reaches the lens surface, so that glare appears to affect the image quality; the conventional solution is simple physical isolation, with split lenses.

In the embodiment, on the basis of adopting an integrated lens, the problem of light channeling is solved through structural improvement. In order to ensure that a small portion of the light entering the interior of the integral lens is effectively prevented from being reflected inside the lens and possibly directly reaching the lens surface, as shown in fig. 12, in some embodiments, the length of the light shielding portion is greater than or equal to the maximum horizontal distance x between the incident point of the light compensating lamp entering the integral lens from the edge of the light transmitting window area 104 near the light transmitting area side of the lens and the light spot reflected from the outgoing surface of the integral lens to the incident surface of the integral lens.

Still as shown in fig. 13, in the figure, α is the maximum beam angle of the light supplement lamp blocked by the structural member; beta is the angle of the maximum beam angle after being refracted by the lens; d is the width of the light hole of the light supplementing lamp; h is the distance from the light supplementing lamp to the surface of the lens; x is the maximum horizontal distance x between the incidence point of the light supplementing lamp entering the integral lens on the incidence surface of the integral lens and the light spot reflected to the incidence surface of the integral lens on the emergent surface of the integral lens; l is the width of the shading part; t is the lens thickness; gamma is the refractive index of the lens.

According to the optical geometry in the structure shown in fig. 12, there are:

therefore, the minimum requirement for determining the light shielding portion width L should be satisfied +.>

According to the design requirement formula of the obtained width of the shading part, the following anti-channeling scheme can be obtained:

in some anti-channeling schemes, the positions of the light supplementing lamps can be reasonably arranged according to the requirements of the view angles of the lenses: the light supplementing lamp is far away from the lens or reduces the size of the light hole as far as possible under the condition that the light supplementing angle requirement can be met, namely, the h value in the formula is increased, the d value is reduced, reflected light cannot reach the surface of the lens, and the reflected light is absorbed and shielded by a shading part near the lens.

In other anti-channeling schemes, under the condition of allowing appearance modeling, the width between the edge of the light transmission area of the lens and the edge of the light transmission window 131 of the light supplementing lamp is as large as possible, namely the width L value of the shading part in the formula, so that reflected light cannot directly reach the surface of the lens;

in still other anti-channeling schemes, when the external dimension of the camera is small and the angle required for the light-compensating view is large, the horizontal distance between the light-compensating lamp and the lens may still not be enough to be fully arranged away from the lens or to be enlarged, so that the light-transmitting area and/or the light-transmitting window 131 area of the lens are rectangular.

In general, the lens transparent area and the transparent window 131 are both circular structures, and since the image is rectangular, the actually useful lens transparent area and the transparent window 131 should be inscribed rectangular transparent areas with circular structures, and other unnecessary places can be subjected to shading treatment. Thus, the width d of the light transmitting hole is reduced by changing the light transmitting area of the lens and the light transmitting window 131 into rectangular structures, and the width L of the shading part between the edge of the light transmitting area of the lens and the edge of the light transmitting window 131 of the light supplementing lamp is correspondingly increased. As shown in fig. 13, the useless area of the light transmission hole is reduced, and the light transmission area and the light transmission window 131 are opened.

In some embodiments, the above three schemes for preventing light channeling can be combined, so that the requirement of shooting vision of most cameras can be basically met, and the technical problem of light channeling prevention can be better solved.

According to the image shooting device provided by the embodiment of the invention, the cost is effectively reduced by adopting the integrated lens; and the feasibility condition of the application of the integrated lens and the mathematical simplification model for determining the width of the shading part are provided, so that the technical problem of light channeling can be solved.

For some split lens designs, because the lens light-transmitting area and the light-transmitting window 131 area are designed separately, for products with waterproof requirements, the required dispensing areas are more, the dispensing sealing surfaces are narrow, the waterproof failure probability is increased, and the reliability is reduced. In this embodiment, through adopting integral type lens structure, the regional area greatly increased of point gum can also effectively reduce the regional for the point gum efficiency obtains improving, and can also improve the water-proof effects to a certain extent.

Referring to fig. 14, in some embodiments, the housing 100 has a glue overflow groove 108 on the end surface for mounting the integrated lens, so as to prevent glue from overflowing from the periphery after the lens is adhered to affect the appearance.

In order to effectively ensure the thickness of the dispensing, in other embodiments, a limiting protrusion 109 for limiting the thickness of the dispensing is further provided on the end surface of the housing 100 for mounting the integrated lens. The spacing bellying is the ascending location structure of lens in the installation direction, is higher than the glue dispensing face 110 and has 0.1-0.5mm, and integrated lens is at first contacted glue at the assembly in-process of pushing down, makes glue overflow to both sides, then integrated lens again with spacing muscle contact, has prevented glue to a certain extent to the trend of printing opacity regional glue overflow, and its spacing effect has guaranteed the thickness of glued membrane, has avoided glue to be squeezed unlimited, has guaranteed waterproof performance.

According to the image shooting device provided by the embodiment of the invention, the inner and outer glue overflow grooves and the limiting protruding structures are arranged on the end face of the outer shell 100, so that glue can be effectively prevented from overflowing or overflowing to the light holes, and the appearance of a product is ensured; and the area of the dispensing area is enlarged, so that the difficulty of actual production is reduced, and the dispensing operability is greatly improved.

Example two

Based on the description of the light supplementing scheme involved in the image capturing device in the first embodiment, a further embodiment of the present invention provides a light supplementing module 130, including: the light supplementing lamp is provided with a light transmitting window 131 on a light emergent path of the light supplementing lamp, the light transmitting window 131 is used for forming the light into a first light supplementing region 210 and a second light supplementing region 220 with different illumination intensities, at least part of the second light supplementing region 220 is located below the first light supplementing region 210, and the illumination intensity of the second light supplementing region 220 is smaller than that of the first light supplementing region 210.

The second light-transmitting region 1312 of the light-transmitting window 131 is semi-light-shielding or light-shielding. The semi-shading treatment includes that the second light-transmitting area 1312 of the light-transmitting window 131 is made of a semitransparent material, or a semitransparent coating or a film is disposed on the second light-transmitting area 1312.

Alternatively, the light shielding process includes: the second light-transmitting area 1312 of the light-transmitting window 131 is made of opaque material, or an opaque coating or film is disposed on the second light-transmitting area 1312.

The technical scheme and the technical effect of the embodiment of the present invention can be specifically described with reference to one embodiment, and will not be described herein.

Example III

Based on the description of the light supplementing scheme involved in the image capturing device in the first embodiment, a further embodiment of the present invention provides a light supplementing module 130, including: the light transmission window 131 is arranged on the light emitting path of one light supplementing lamp, the light transmission window 131 on the light emitting path of one light supplementing lamp is provided with a polarized light structural element for deflecting and emitting the light irradiated on the light transmission window 131 to a preset direction, the light emitted from the polarized light structural element is overlapped with a part of the light of the other light supplementing lamp to form the first light supplementing region 210, and the other part of the light of the other light supplementing lamp forms the second light supplementing region 220.

In some embodiments, the polarizing structure element is a polarizer, an incident surface of the polarizer is perpendicular to an optical axis of the light-compensating lamp, an exit surface of the polarizer has an inclined plane, and an inclined direction of the inclined plane is consistent with a deflection direction of the outgoing light. In other embodiments, the polarizing structure element is a polarizer, the exit surface of the polarizer has a sawtooth structure, the sawtooth structure includes a plurality of connected tooth grooves, the tooth grooves include a first side wall and a second side wall connected to one end of the first side wall, and the inclination direction of the first side wall is consistent with the deflection direction of the exit light.

In still other embodiments, the polarizing structure element is a polarizer, the polarizer is obliquely disposed on the light emitting path of the light compensating lamp, and the oblique direction of the polarizer is consistent with the deflection direction of the emitted light.

In the foregoing embodiment of the light-compensating module 130, a lens cup is further disposed in front of the light-compensating lamp between the light-compensating lamp and the light-transmitting window 131.

The technical scheme and the technical effect of the embodiment of the present invention can be specifically described with reference to one embodiment, and are not described herein again.

Example IV

On the basis of the first embodiment, the invention also provides an image monitoring system, which comprises a carrier, and the image shooting device of any one of claims 1 to 18 is arranged on the carrier at a first height position from a ground plane.

Specifically, when the object distance from the lens optical center of the imaging module to the shooting object is 2-4 m, the overlapping part of the first light supplementing area formed by the light supplementing module and the field of view range of the imaging module is located above the second height position of the shooting object, the overlapping part of the second light supplementing area formed by the light supplementing module and the field of view range of the imaging module is located below the second height position of the shooting object, and the distances between the first height position and the second height position are respectively 0.8-1.2 m from the ground plane.

The first height position and the second height position, that is, the predetermined position in the first embodiment, the installation position of the image capturing device (i.e., the first height position) and the critical position 230 of the first light filling area 210 and the second light filling area 220 (i.e., the second height position) are generally substantially the same within the allowable installation error range, and when the first height position and the second height position are slightly different, the pitch angle of the image capturing device can be adjusted to adapt to the position requirement of the light filling area.

In addition, the object distance can be customized according to the requirement of the user, and when the object distance is changed (the corresponding light supplementing distance is also changed), the shooting visual fields of the first light supplementing region, the second light supplementing region and the imaging module are also changed, but the critical positions of the first light supplementing region and the second light supplementing region irradiated to the shooting object are basically unchanged.

In some embodiments, the carrier may be a device that is fixed in a location, such as a barrier; the carrier may also be a moving object, such as a vehicle. The subject of which is typically a vehicle. The first height position and the second height position are generally determined according to the heights of license plates and cabs of most vehicles, so that a first light supplementing area and a second light supplementing area formed by the image shooting device are respectively the license plate positions of the vehicles and the positions of drivers and passengers for segmented light supplementing, and further the imaging module is ensured to be capable of shooting high-quality images.

The image monitoring equipment provided by the embodiment of the invention comprises a carrier, wherein any one of the image shooting devices of the embodiment is arranged at the position of a preset height on the carrier, so that the perception characteristics of light required by shooting of license plates and faces of drivers are considered, and the adopted light supplementing module is at least used for forming a first light supplementing area and a second light supplementing area with different illumination intensities, wherein the illumination intensity of the second light supplementing area is smaller than that of the first light supplementing area, the first light supplementing area corresponds to the faces of the drivers, the second light supplementing area corresponds to the license plates and gives light supplementing with proper illumination intensity, at least partial areas of the first light supplementing area and the second light supplementing area overlap with the visual field range of the imaging module, so that the respective light supplementing of different shooting objects is realized, the image shooting quality can be improved at least to a certain extent in an auxiliary way, and the recognition effect of the vehicles and the faces is improved conveniently

It should be noted that, in this document, terms "upper," "lower," and the like, indicate orientations or positional relationships, and are merely used for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. Relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element. As will be appreciated by those of ordinary skill in the art, this may be the case.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims

1. The image shooting device is characterized by comprising a shell, wherein an imaging module and a light supplementing module are arranged in the shell, the light supplementing module is arranged on the side part of the imaging module, the light supplementing module is at least used for forming a first light supplementing area and a second light supplementing area with different illumination intensities, the illumination intensity of the second light supplementing area is smaller than that of the first light supplementing area, and at least partial areas of the first light supplementing area and the second light supplementing area are overlapped with the field of view of the imaging module respectively so as to improve the image quality of the image shooting of the object with different light sensing characteristics synchronously;

the light supplementing module comprises at least two light supplementing lamps, a light transmission window is arranged on a light ray emergent path of each light supplementing lamp, the light transmission window on the light ray emergent path of each light supplementing lamp is provided with a first light transmission area and a second light transmission area, the first light transmission area is positioned above the second light transmission area, and the light transmittance of the first light transmission area is larger than that of the second light transmission area; the light rays emitted from the first light-transmitting area form the first light-supplementing area, and the light rays emitted from the second light-transmitting area form the second light-supplementing area;

The light supplementing module at least comprises a light supplementing lamp, the imaging module comprises a lens, at least a first separation cavity and a second separation cavity are arranged in the shell, the light supplementing lamp is arranged in the first separation cavity, and the imaging module is arranged in the second separation cavity;

the front end of the shell is provided with an integrated lens, the integrated lens is provided with a light transmission window area corresponding to the light supplementing lamp and a lens light transmission area corresponding to the lens, and the front end of the shell is provided with a shading part at least corresponding to the integrated lens and positioned between the light transmission window area and the lens light transmission area;

wherein the minimum requirement of the width L of the shading part is satisfied

X is the maximum horizontal distance between the incidence point of the light ray entering the light supplementing lamp in the integrated lens on the incidence surface of the integrated lens and the light spot reflected to the incidence surface of the integrated lens on the emergent surface of the integrated lens, t is the lens thickness, d is the width of the light transmission window area of the light supplementing lamp, gamma is the refractive index of the lens, and h is the distance from the light supplementing lamp to the surface of the lens.

2. The image capturing device according to claim 1, wherein the light supplementing module comprises one or more light supplementing lamps, a light transmission window is arranged on a light ray emergent path of the light supplementing lamps, the light transmission window is provided with a first light transmission area and a second light transmission area, the first light transmission area is positioned above the second light transmission area, and the light transmittance of the first light transmission area is larger than that of the second light transmission area; the light rays emitted from the first light-transmitting area form the first light-supplementing area, and the light rays emitted from the second light-transmitting area form the second light-supplementing area.

3. The image capturing apparatus according to claim 1 or 2, wherein the second light-transmitting region of the light-transmitting window is subjected to a semi-light-shielding process.

4. The image capturing device according to claim 3, wherein the semi-light shielding process includes a translucent material for a second light-transmitting region of the light-transmitting window, or a translucent coating or film is provided on the second light-transmitting region.

5. The image capturing device according to claim 1, wherein the light compensating module includes at least two light compensating lamps, a light transmitting window is provided on a light emitting path of one of the light compensating lamps, the light transmitting window on the light emitting path of the one light compensating lamp has a polarizing structure element for deflecting light irradiated onto the light transmitting window to exit in a predetermined direction, the light emitted from the polarizing structure element overlaps with a part of the light of the other light compensating lamp to form the first light compensating region, and the other part of the light of the other light compensating lamp forms the second light compensating region.

6. The image capturing device according to claim 5, wherein the polarizing structure element is a polarizer, an incident surface of the polarizer is perpendicular to an optical axis of the light-compensating lamp, an exit surface of the polarizer has an inclined surface, and an inclination direction of the inclined surface is consistent with a deflection direction of the outgoing light.

7. The image capturing device according to claim 6, wherein the polarizing structure element is a polarizer, the exit surface of the polarizer has a saw-tooth structure, the saw-tooth structure includes a plurality of connected tooth grooves, the tooth grooves include a first side wall and a second side wall connected to one end of the first side wall, and an inclination direction of the first side wall is consistent with a deflection direction of the exiting light.

8. The image capturing device according to claim 5, wherein the polarizing structure element is a polarizer, the polarizer is obliquely disposed on a light emitting path of the light compensating lamp, and an oblique direction of the polarizer is consistent with a deflection direction of emitted light.

9. The image capturing apparatus according to claim 8, wherein a convex lens cup is further provided between a light supplement lamp in which the light transmission window is a polarizing structure element and the polarizing structure element.

10. The image capturing apparatus according to claim 1, wherein the length of the light shielding portion is greater than or equal to a maximum horizontal distance between an incident point of light of the light supplement lamp entering the integral lens from an edge of the light transmission window area near the lens light transmission area side and a light spot reflected to the integral lens incident surface at the integral lens exit surface.

11. The image capturing device of claim 10, wherein the lens light transmissive area and/or the light transmissive window area are rectangular.

12. The image capturing device according to claim 10, wherein an overflow groove is provided in an end surface of the housing for mounting the integrated lens.

13. The image capturing device according to claim 12, wherein a limiting boss for limiting a spot size thickness is further provided on the housing on an end surface for mounting the integrated lens.

14. The image capturing device according to claim 1, wherein when the imaging module is 2 to 4 meters away from the subject, the overlapping portion of the first light supplementing region and the field of view range of the imaging module is located above a predetermined position of the subject, and the overlapping portion of the second light supplementing region and the field of view range of the imaging module is located below the predetermined position of the subject.

15. The image capturing apparatus according to claim 14, wherein the predetermined position is a position on the subject that is 0.8 to 1.2m from a ground level.

16. A light supplementing module, comprising: the light supplementing lamp is provided with a light transmission window on a light ray emergent path of the light supplementing lamp, the light transmission window is used for forming the light rays into a first light supplementing region and a second light supplementing region with different illumination intensities, and the illumination intensity of the second light supplementing region is smaller than that of the first light supplementing region;

The light supplementing lamps at least comprise two light supplementing lamps, the light transmission window on the light ray outgoing path of at least one light supplementing lamp is provided with a first light transmission area and a second light transmission area, the first light transmission area is positioned above the second light transmission area, and the light transmittance of the first light transmission area is larger than that of the second light transmission area; the light rays emitted from the first light-transmitting area form the first light-supplementing area, and the light rays emitted from the second light-transmitting area form the second light-supplementing area;

the side part of the light supplementing module is provided with an imaging module, the imaging module and the light supplementing module are positioned in a shell, the imaging module comprises a lens, at least a first separation cavity and a second separation cavity are arranged in the shell, a light supplementing lamp of the light supplementing module is arranged in the first separation cavity, and the imaging module is arranged in the second separation cavity;

Wherein the minimum requirement of the width L of the shading part is satisfied

17. The light module of claim 16, wherein the second transparent region of the transparent window is semi-opaque or opaque.

18. The light supplementing module according to claim 17, wherein the semi-shading treatment comprises a translucent material for a second light-transmitting region of the light-transmitting window, or a translucent coating or film is provided on the second light-transmitting region;

alternatively, the light shielding process includes: and the second light-transmitting area of the light-transmitting window is made of opaque materials, or an opaque coating or film is arranged on the second light-transmitting area.

19. A light filling module as claimed in any one of claims 16 to 18, wherein a convex lens cup is provided in front of the light filling lamp between the light filling lamp and the light transmission window.

20. An image capture device comprising a carrier on which the image capture apparatus of any one of claims 1 to 15 is mounted at a first height from ground level.

21. The image monitoring device according to claim 20, wherein when an object distance from a lens optical center of the imaging module to a shooting object is 2-4 m, an overlapping portion of a field of view range of the imaging module and the first light compensating area formed by the light compensating module is located above a second height position of the shooting object, an overlapping portion of a field of view range of the imaging module and the second light compensating area formed by the light compensating module is located below the second height position of the shooting object, the distance between the first height position and a ground plane is 0.8-1.2 m, and the distance between the second height position and the ground plane is 0.8-1.2 m.