CN213637909U

CN213637909U - Video camera

Info

Publication number: CN213637909U
Application number: CN202022216177.9U
Authority: CN
Inventors: 邵一轶; 刘恩奇
Original assignee: Zhejiang Dahua Technology Co Ltd
Current assignee: Zhejiang Dahua Technology Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-07-06
Anticipated expiration: 2030-09-30

Abstract

The utility model relates to a camera, this camera includes: the device comprises a beam splitter, a first image sensor, a second image sensor and a processing chip. The beam splitter is provided with a beam splitting surface, and the beam splitting surface is used for splitting light rays emitted into the camera into first incident light and second incident light. The first incident light can irradiate a first image sensor, the first image sensor is used for converting the first incident light into a first image signal, and the resolution of the first image sensor is smaller than the preset resolution. The second incident light can irradiate a second image sensor, the second image sensor is used for converting the second incident light into a second image signal, and the resolution of the second image sensor is greater than or equal to the preset resolution. The utility model provides a high-quality image of homoenergetic output under the light condition of difference can be realized to the camera.

Description

Video camera

Technical Field

The utility model relates to an image acquisition equipment technical field especially relates to a camera.

Background

With the development of security technology, the requirements on the quality of images output by cameras are higher and higher. However, the quality of an image output by the existing camera is seriously influenced by light conditions, and the output image is clear and has high quality under the light condition with high brightness, but the output image is not clear and has low quality under the light condition with low brightness.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a camera that can output high quality images under different lighting conditions.

The utility model provides a camera, this camera includes: the device comprises a beam splitter, a first image sensor, a second image sensor and a processing chip. The beam splitter is provided with a beam splitting surface, and the beam splitting surface is used for splitting light rays emitted into the camera into first incident light and second incident light. The first incident light can irradiate a first image sensor, the first image sensor is used for converting the first incident light into a first image signal, and the resolution of the first image sensor is smaller than the preset resolution. The second incident light can irradiate a second image sensor, the second image sensor is used for converting the second incident light into a second image signal, and the resolution of the second image sensor is greater than or equal to the preset resolution. The processing chip is electrically connected with the first image sensor and the second image sensor, a first image signal of the first image sensor and a second image signal of the second image sensor can be respectively transmitted to the processing chip, and the processing chip processes the first image signal and the second image signal.

In an embodiment of the present invention, the camera includes: the image sensor comprises a beam splitter, a first filter switcher, a first image sensor, a second filter switcher, a second image sensor and a processing chip. The beam splitter is provided with a beam splitting surface, and the beam splitting surface is used for splitting light rays emitted into the camera into first incident light and second incident light. The first filter disc switcher is provided with a first window, the first window is arranged towards the splitting surface, first incident light split by the splitting surface can irradiate the first window, and the first window is provided with a first optical filter disc and a second optical filter disc in a switchable manner. The first optical filter can filter out first incident light with the wavelength larger than 650nm, and the second optical filter can filter out first incident light with all wavelengths. The first image sensor is aligned to the first window, first incident light filtered by the first optical filter or the second optical filter can irradiate the first image sensor, the first image sensor is used for converting the first incident light passing through the first filter switcher into a first image signal, and the resolution of the first image sensor is smaller than a preset resolution. The second filter sheet switcher is provided with a second window, the second window is arranged towards the splitting surface, second incident light split by the splitting surface can irradiate the second window, and the second window is provided with a third optical filter sheet, a fourth optical filter sheet and a fifth optical filter sheet in a switchable manner. The third optical filter can filter out second incident light with the wavelength being larger than 650nm, the fourth optical filter can filter out second incident light with the wavelength being smaller than 780nm, and the fifth optical filter can filter out second incident light with the wavelength being smaller than 730 nm. The second image sensor is aligned to the second window, second incident light filtered by the third optical filter or the second optical filter or the fifth optical filter can irradiate the second image sensor, the second image sensor is used for converting the second incident light passing through the second filter switcher into a second image signal, and the resolution of the second image sensor is greater than or equal to the preset resolution. And the processing chip is electrically connected with the first image sensor and the second image sensor, a first image signal of the first image sensor and a second image signal of the second image sensor can be respectively transmitted to the processing chip, and the processing chip processes the first image signal and the second image signal.

The utility model provides a camera, when light kicked into the beam splitter and the spectral surface through the beam splitter, light can be divided into first incident light and second incident light by the spectral surface. The first incident light is emitted into the first image sensor through the first window, and the first image sensor converts the received light signal into a first image signal and transmits the first image signal to the processing chip. And the second incident light is emitted into the second image sensor through the second window, and the second image sensor converts the received light signal into a second image signal and transmits the second image signal to the processing chip. Finally, the processing chip processes the first image signal and the second image signal to enable the first image signal and the second image signal to be imaged independently or the first image signal and the second image signal to be imaged in a fusion mode.

Under the condition of better daytime light, a color image needs to be output. The third optical filter can be switched to the second window, and the third optical filter can filter out second incident light with the wavelength being larger than 650nm, so that the final imaging effect of the camera is closer to the real imaging effect, and a clear high-quality image can be obtained.

When a color image needs to be output under the condition of fog in the daytime. The fourth optical filter can be switched to the second window, and the fourth optical filter filters out light with the wavelength less than or equal to 780nm, so that a clear high-quality image is obtained.

In the night condition, when a black-and-white image needs to be output. The second optical filter can be switched to the first window, and the second optical filter can pass through first incident light with all wavelengths, so that the camera is ensured to have enough light incoming amount, and clear high-quality images can be obtained.

In the night condition, when a color image needs to be output. The first optical filter can be switched to the first window, and the first image sensor converts the received first incident light into a first image signal and transmits the first image signal to the processing chip, so that the processing chip obtains a color image. And the fifth optical filter is switched to the second window, and the second image sensor converts the received second incident light into a second image signal and transmits the second image signal to the processing chip, so that the processing chip obtains a black-and-white image. Finally, the first image signal and the second image signal are fused together through the processing chip, and a color image with higher definition is obtained.

In conclusion, the utility model provides a camera can realize that the homoenergetic exports high-quality image under the light condition of difference.

In an embodiment of the present invention, the camera further includes a first circuit board disposed corresponding to the beam splitter, the first image sensor is disposed on one side of the first circuit board facing the splitting plane, and the first filter switcher is detachably connected to one side of the first circuit board facing the splitting plane through a first fastener. By the arrangement, the internal space of the camera can be effectively utilized, and the volume of the camera is reduced.

In an embodiment of the present invention, the camera further includes a second circuit board disposed corresponding to the beam splitter, the second image sensor is disposed on one side of the second circuit board facing the splitting plane, and the second filter switcher is detachably connected to one side of the second circuit board facing the splitting plane through a second fastener. By the arrangement, the internal space of the camera can be effectively utilized, and the volume of the camera is reduced.

In an embodiment of the present invention, the first filter switch includes a first housing, a first actuator and a first control circuit. The first actuator and the first control circuit are arranged in the first shell, and the first window is arranged on the first shell. The first control circuit is electrically connected with a first actuator, and the first actuator pushes or pulls the first optical filter into or out of the first window or pushes or pulls the second optical filter into or out of the first window by grabbing the first optical filter or the second optical filter. So set up, usable first executor carries out fast switch over to first optics filter or second optics filter, improves the work efficiency of camera.

In an embodiment of the present invention, the second filter switch includes a second housing, a second actuator and a second control circuit. The second actuator and the second control circuit are arranged in the second shell, and the second window is arranged on the second shell. The second control circuit is electrically connected with a second actuator, and the second actuator pushes or pulls the third optical filter into or out of the second window, or pushes or pulls the fourth optical filter into or out of the second window, or pushes or pulls the fifth optical filter into or out of the second window by grabbing the third optical filter or the fourth optical filter or the fifth optical filter. By the arrangement, the third optical filter, the fourth optical filter or the fifth optical filter can be rapidly switched by the second actuator, so that the working efficiency of the camera is improved.

In an embodiment of the present invention, the predetermined resolution is 200 ten thousand pixels. 200 ten thousand pixel points are the demarcation points of the resolution ratio of the image sensor. The image sensor with more than 200 ten thousand pixel points has higher resolution and lower signal-to-noise ratio, and is suitable for the condition of better light conditions. The image sensor with less than 200 ten thousand pixel points has lower resolution, but has higher signal-to-noise ratio, and is suitable for the condition of poorer light conditions.

In an embodiment of the present invention, the resolution of the first image sensor is 100 ten thousand pixels. The first image sensor with 100 ten thousand pixel points has higher signal-to-noise ratio and can be used under the condition of poor light conditions. In addition, the first image sensor with 100 ten thousand pixel points is already produced in a large scale, which is beneficial to reducing the production cost of the camera.

In an embodiment of the present invention, the resolution of the second image sensor is 200 ten thousand pixels, 400 ten thousand pixels, 800 pixels or 1200 ten thousand pixels. The second image sensor with 200 ten thousand pixel points, the second image sensor with 400 ten thousand pixel points, the second image sensor with 800 ten thousand pixel points and the second image sensor with 1200 ten thousand pixel points all have higher resolution ratio and can be used under the condition of better light conditions. In addition, the second image sensor with 200 ten thousand pixel points, the second image sensor with 400 ten thousand pixel points, the second image sensor with 800 ten thousand pixel points and the second image sensor with 1200 ten thousand pixel points are already produced in a large scale, which is beneficial to reducing the production cost of the camera.

In an embodiment of the present invention, the camera further includes a zoom lens, the zoom lens is provided with a light outlet, and the light outlet is aligned with the beam splitter, so that the light entering the camera enters the beam splitter from the light outlet. Under the condition of not changing the shooting distance, the zoom lens has different focal lengths, and the shooting range can be changed by changing the focal length, so that clear images are shot, and the camera is very favorable for shooting images in different distance ranges.

In an embodiment of the present invention, the cross-sectional shape of the beam splitter is an isosceles right triangle, and the splitting plane is disposed on the inclined plane of the beam splitter. Thus, the incident light enters from a right-angle surface of the beam splitter and then exits from the inclined surface of the beam splitter. The cross section of the beam splitter is in the shape of an isosceles right triangle, and the beam splitting surface is arranged on the inclined surface of the beam splitter. Therefore, when the incident light exits the splitting surface of the beam splitter, the incident light can be divided into a first incident light and a second incident light which are perpendicular to each other. And the first incident light enters the first image sensor through the first window, and the second incident light enters the second image sensor through the second window. Therefore, the plane where the first window is located and the plane where the second window is located can be vertically arranged, and therefore the assembly difficulty of the camera is favorably reduced.

The utility model provides a camera, generally, the higher the resolution ratio of the image sensor of camera is the lower the signal-to-noise ratio. In case of good light conditions, a second image sensor with a higher resolution may be selected for obtaining a higher imaging quality. In the case of poor light conditions, the first image sensor with lower resolution may be selected to obtain a higher signal-to-noise ratio. In this embodiment, the first image sensor with low resolution and the second image sensor with high resolution can also be used simultaneously, and the processing chip performs fusion processing on the first image signal and the second image signal. Therefore, the high-quality image can be output under different illumination conditions (good light conditions and poor light conditions).

Drawings

Fig. 1 is a schematic structural diagram of a camera according to an embodiment of the present invention;

fig. 2 is an exploded view of a camera according to an embodiment of the present invention.

Reference numerals: 1. a beam splitter; 11. a light splitting surface; 2. a first filter switcher; 21. a first window; 3. a second filter switcher; 31. a second window; 4. a zoom lens; 41. a light outlet; 5. a first circuit board; 6. a second circuit board; 7. a first incident light; 8. the second incident light.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, the present invention provides a camera, including: beam splitter 1, first image sensor, second image sensor and processing chip. The beam splitter 1 is provided with a beam splitting surface 11, and the beam splitting surface 11 is used for splitting light rays entering the camera into a first incident light 7 and a second incident light 8. The first incident light 7 can be irradiated to a first image sensor for converting the first incident light 7 into a first image signal, and the first image sensor has a resolution smaller than a preset resolution. The second incident light 8 can be irradiated to a second image sensor for converting the second incident light 8 into a second image signal, and the second image sensor resolution is greater than or equal to the preset resolution. The processing chip is electrically connected with the first image sensor and the second image sensor, a first image signal of the first image sensor and a second image signal of the second image sensor can be respectively transmitted to the processing chip, and the processing chip processes the first image signal and the second image signal.

Generally, the higher the resolution of the camera's image sensor, the lower the signal-to-noise ratio. In case of good light conditions, a second image sensor with a higher resolution may be selected for obtaining a higher imaging quality. In the case of poor light conditions, the first image sensor with lower resolution may be selected to obtain a higher signal-to-noise ratio. In this embodiment, the first image sensor with low resolution and the second image sensor with high resolution can also be used simultaneously, and the processing chip performs fusion processing on the first image signal and the second image signal. Therefore, the high-quality image can be output under different illumination conditions (good light conditions and poor light conditions).

In one embodiment, as shown in fig. 1 and 2, the camera includes: the image sensor comprises a beam splitter 1, a first filter switcher 2, a first image sensor, a second filter switcher 3, a second image sensor and a processing chip.

The beam splitter 1 is provided with a splitting surface 11, and the splitting surface 11 is used for splitting light entering the camera into a first incident light 7 and a second incident light 8. The first filter switcher 2 is provided with a first window 21, the first window 21 is arranged toward the splitting surface 11, the first incident light 7 split by the splitting surface 11 can irradiate the first window 21, and the first window 21 is provided with a first optical filter and a second optical filter in a switchable manner. It is understood that "the first window 21 is switchably provided with the first optical filter and the second optical filter" means that the first optical filter can be switched to the first window 21, and the second optical filter can be switched to the first window 21, that is, the first optical filter can be selectively provided to the first window 21, and the second optical filter can be selectively provided to the first window 21. The first optical filter can filter out the first incident light 7 with a wavelength greater than 650nm, and the second optical filter can pass the first incident light 7 with all wavelengths.

The first image sensor is aligned with the first window 21, the first incident light 7 filtered by the first optical filter or the second optical filter can irradiate the first image sensor, the first image sensor is used for converting the first incident light 7 passing through the first filter switcher 2 into a first image signal, and the resolution of the first image sensor is smaller than the preset resolution.

The second filter switcher 3 is provided with a second window 31, the second window 31 is disposed toward the splitting surface 11, the second incident light 8 split by the splitting surface 11 can irradiate the second window 31, and the second window 31 is switchably provided with a third optical filter, a fourth optical filter and a fifth optical filter. It is understood that "the second window 31 is switchably provided with the third optical filter, the fourth optical filter and the fifth optical filter" means that the third optical filter can be switched to the second window 31, the fourth optical filter can be switched to the second window 31, and the fifth optical filter can be switched to the second window 31, that is, the third optical filter can be selectively provided to the second window 31, the fourth optical filter can be selectively provided to the second window 31, and the fifth optical filter can be selectively provided to the second window 31. The third optical filter can filter out the second incident light 8 with the wavelength being larger than 650nm, the fourth optical filter can filter out the second incident light 8 with the wavelength being smaller than 780nm, and the fifth optical filter can filter out the second incident light 8 with the wavelength being smaller than 730 nm.

The second image sensor is aligned with the second window 31, the second incident light 8 filtered by the third optical filter or the second optical filter or the fifth optical filter can irradiate the second image sensor, the second image sensor is used for converting the second incident light 8 passing through the second filter switcher 3 into a second image signal, and the resolution of the second image sensor is greater than or equal to the preset resolution.

The processing chip is electrically connected with the first image sensor and the second image sensor, a first image signal of the first image sensor and a second image signal of the second image sensor can be respectively transmitted to the processing chip, and the processing chip processes the first image signal and the second image signal.

When light enters the beam splitter 1 and passes through the splitting surface 11 of the beam splitter 1, the light is split into the first incident light 7 and the second incident light 8 by the splitting surface 11. The first incident light 7 enters the first image sensor through the first window 21, and the first image sensor converts the received light signal into a first image signal and transmits the first image signal to the processing chip. And, the second incident light 8 is incident into the second image sensor through the second window 31, and the second image sensor converts the received light signal into a second image signal and transmits the second image signal to the processing chip. Finally, the processing chip processes the first image signal and the second image signal to enable the first image signal and the second image signal to be imaged independently or the first image signal and the second image signal to be imaged in a fusion mode.

Under the condition of better daytime light, a color image needs to be output. The third optical filter may be switched to the second window 31 and the second image sensor converts the received second incident light 8 into a second image signal to be transmitted to the processing chip. Under the condition of good light, the light is sufficient, at this time, the second image sensor can capture light with all wavelengths, but the near infrared light with the wavelength larger than 650nm can cause the second image signal transmitted to the processing chip by the second image sensor to be in integral color shift red, so that the final imaging effect is influenced. Therefore, the third optical filter can be used for filtering out the second incident light 8 with the wavelength larger than 650nm, so that the final imaging effect of the camera is closer to the real imaging effect.

When a color image needs to be output under the condition of fog in the daytime. The fourth optical filter may be switched to the second window 31 and the second image sensor converts the received second incident light 8 into a second image signal to be transmitted to the processing chip. Under the condition of fog, the air is painted with aerosol, and the aerosol can transmit light with the wavelength being greater than 780nm and can not transmit light with the wavelength being less than or equal to 780 nm. However, the aerosol in air has a certain density, which causes part of the light with the wavelength less than or equal to 780nm to avoid the aerosol and enter the second window 31, and most of the light with the wavelength less than or equal to 780nm is blocked by the aerosol outside the second window 31. The light with the wavelength less than or equal to 780nm entering the second window 31 cannot form a clear and complete image, and therefore, the final imaging of the camera can have a gray-frosted effect. Therefore, in order to make the imaging of the camera clearer, light having a wavelength of 780nm or less is filtered out using the fourth optical filter.

In the night condition, when a black-and-white image needs to be output. The second optical filter may be switched to the first window 21 and the first image sensor converts the received first incident light 7 into a first image signal to be transmitted to the processing chip. The black-and-white image itself has no color, and thus, when the black-and-white image is output, the light having a wavelength of more than 650nm does not make the overall color tone of the first image signal output by the first image sensor to be reddish. Thus, in order to obtain higher image quality, a second optical filter that can pass the first incident light 7 of all wavelengths may be selected.

In the night condition, when a color image needs to be output. The first optical filter can be switched to the first window 21, and the first image sensor converts the received first incident light 7 into a first image signal to be transmitted to the processing chip, so that the processing chip obtains a color image. And, the fifth optical filter is switched to the second window 31, and the second image sensor converts the received second incident light 8 into a second image signal to be transmitted to the processing chip, so that the processing chip obtains a black-and-white image. Finally, the first image signal and the second image signal are fused together through the processing chip, and a color image with higher definition is obtained. When a color image is output, light with the wavelength larger than 650nm is filtered, so that the phenomenon that the whole color tone of the output color image is deviated to red can be avoided, and therefore, the first optical filter which can filter the first incident light 7 with the wavelength larger than 650nm can be selected. However, color images obtained under night conditions are not high in definition, and in order to obtain a clearer image, it is necessary to blend black and white images with higher definition. The camera is required to output a color image at night, and one important reason is to take a clear picture of the license plate. However, most of the existing household vehicles are license plates with blue background and white characters, and in view of the particularity of the color and the material of the license plates, after light with a wavelength of less than 730nm is received by the second image sensor, the second image signal generated by the second image sensor is subjected to total reflection, and at the moment, the black and white image obtained by the second image sensor is unclear. Therefore, it is necessary to select the fifth optical filter capable of filtering out the second incident light 8 with the wavelength less than 730nm, so that the second image sensor obtains a clear second image signal. Finally, the first image signal and the second image signal are fused together through the processing chip, and a color image with higher definition is obtained.

In one embodiment, as shown in fig. 1 and 2, the camera further includes a first circuit board 5 disposed corresponding to the beam splitter 1, the first image sensor is disposed on a side of the first circuit board 5 facing the splitting surface 11, and the first filter switcher 2 is detachably connected to a side of the first circuit board 5 facing the splitting surface 11 by a first fastener. By the arrangement, the internal space of the camera can be effectively utilized, and the volume of the camera is reduced.

In one embodiment, as shown in fig. 1 and 2, the camera further includes a second circuit board 6 disposed corresponding to the beam splitter 1, the second image sensor is disposed on a side of the second circuit board 6 facing the splitting surface 11, and the second filter switcher 3 is detachably connected to a side of the second circuit board 6 facing the splitting surface 11 by a second fastening member. By the arrangement, the internal space of the camera can be effectively utilized, and the volume of the camera is reduced.

In one embodiment, first filter switch 2 includes a first housing, a first actuator, and a first control circuit. The first actuator and the first control circuit are disposed in the first housing, and the first window 21 is disposed on the first housing. The first control circuit is electrically connected to a first actuator that pushes or pulls the first optical filter into or out of the first window 21 or pushes or pulls the second optical filter into or out of the first window 21 by grasping the first optical filter or the second optical filter. So set up, usable first executor carries out fast switch over to first optics filter or second optics filter, improves the work efficiency of camera.

In one embodiment, second filter switch 3 includes a second housing, a second actuator, and a second control circuit. The second actuator and the second control circuit are arranged in the second housing, and the second window 31 is arranged on the second housing. The second control circuit is electrically connected to a second actuator that pushes or pulls the third optical filter into or out of the second window 31, or pushes or pulls the fourth optical filter into or out of the second window 31, or pushes or pulls the fifth optical filter into or out of the second window 31 by grasping the third optical filter or the fourth optical filter or the fifth optical filter. By the arrangement, the third optical filter, the fourth optical filter or the fifth optical filter can be rapidly switched by the second actuator, so that the working efficiency of the camera is improved.

In one embodiment, the predetermined resolution is 200 ten thousand pixels. 200 ten thousand pixel points are the demarcation points of the resolution ratio of the image sensor. The image sensor with more than 200 ten thousand pixel points has higher resolution and lower signal-to-noise ratio, and is suitable for the condition of better light conditions. The image sensor with less than 200 ten thousand pixel points has lower resolution, but has higher signal-to-noise ratio, and is suitable for the condition of poorer light conditions.

In one embodiment, the resolution of the first image sensor is 100 ten thousand pixels. The first image sensor with 100 ten thousand pixel points has higher signal-to-noise ratio and can be used under the condition of poor light conditions. In addition, the first image sensor with 100 ten thousand pixel points is already produced in a large scale, which is beneficial to reducing the production cost of the camera.

In an embodiment, the resolution of the second image sensor is 200 ten thousand pixels, 400 ten thousand pixels, 800 pixels, or 1200 ten thousand pixels. The second image sensor with 200 ten thousand pixel points, the second image sensor with 400 ten thousand pixel points, the second image sensor with 800 ten thousand pixel points and the second image sensor with 1200 ten thousand pixel points all have higher resolution ratio and can be used under the condition of better light conditions. In addition, the second image sensor with 200 ten thousand pixel points, the second image sensor with 400 ten thousand pixel points, the second image sensor with 800 ten thousand pixel points and the second image sensor with 1200 ten thousand pixel points are already produced in a large scale, which is beneficial to reducing the production cost of the camera.

In one embodiment, as shown in fig. 1 and fig. 2, the camera further includes a zoom lens 4, the zoom lens 4 is provided with a light outlet 41, and the light outlet 41 is aligned with the beam splitter 1, so that the light entering the camera enters the beam splitter 1 through the light outlet 41. The zoom lens 4 has different focal lengths without changing the photographing distance, and the photographing range can be changed by changing the focal length, so that a clear image is photographed, and thus, the camera can be very favorable for photographing images in different distance ranges.

In one embodiment, as shown in FIG. 2, the beam splitter 1 has a triangular prism shape. Thus, the beam splitter 1 has three sides, one of which can be used to provide the splitting plane 11, another of which can be used to pass the incident light, and yet another of which can be used to support the beam splitter 1. By the arrangement, the beam splitter 1 is simple in structure and easy to machine and manufacture.

In one embodiment, as shown in fig. 2, the beam splitter 1 has a cross-sectional shape of an isosceles right triangle, and the splitting surface 11 is disposed on an inclined surface of the beam splitter 1. Thus, the incident light enters from a right-angle surface of the beam splitter 1 and then exits from the inclined surface of the beam splitter 1. The cross section of the beam splitter 1 is in the shape of an isosceles right triangle, and the beam splitting surface 11 is arranged on the inclined surface of the beam splitter 1. Therefore, when the incident light exits the splitting surface 11 of the beam splitter 1, the incident light can be split into the first incident light 7 and the second incident light 8 which are perpendicular to each other. And since the first incident light 7 enters the first image sensor through the first window 21 and the second incident light 8 enters the second image sensor through the second window 31. Therefore, the plane of the first window 21 and the plane of the second window 31 can be vertically arranged, and therefore the assembly difficulty of the camera is reduced.

The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims

1. A camera, comprising:

the beam splitter (1) is provided with a light splitting surface (11), and the light splitting surface (11) is used for splitting light rays emitted into the camera into first incident light (7) and second incident light (8);

a first image sensor to which first incident light (7) can be irradiated, the first image sensor being configured to convert the first incident light (7) into a first image signal, the first image sensor having a resolution smaller than a preset resolution;

a second image sensor to which a second incident light (8) can be irradiated, the second image sensor being configured to convert the second incident light (8) into a second image signal, the second image sensor resolution being greater than or equal to the preset resolution;

and the processing chip is electrically connected with the first image sensor and the second image sensor, a first image signal of the first image sensor and a second image signal of the second image sensor can be respectively transmitted to the processing chip, and the processing chip processes the first image signal and the second image signal.

2. The camera of claim 1, further comprising:

the first filter disc switcher (2) is provided with a first window (21), the first window (21) is arranged towards the light splitting surface (11), first incident light (7) split by the light splitting surface (11) can irradiate the first window (21), and the first window (21) is provided with a first optical filter disc and a second optical filter disc in a switchable manner; the first optical filter can filter out first incident light (7) with the wavelength larger than 650nm, and the second optical filter can filter out first incident light (7) with all wavelengths;

the first image sensor is aligned with the first window (21), and first incident light (7) filtered by the first optical filter or the second optical filter can be irradiated to the first image sensor which is used for converting the first incident light (7) passing through the first filter switcher (2) into the first image signal;

the second filter switcher (3) is provided with a second window (31), the second window (31) is arranged towards the light splitting surface (11), second incident light (8) split by the light splitting surface (11) can irradiate the second window (31), and the second window (31) is provided with a third optical filter, a fourth optical filter and a fifth optical filter in a switchable manner; the third optical filter can filter out second incident light (8) with the wavelength being larger than 650nm, the fourth optical filter can filter out second incident light (8) with the wavelength being smaller than 780nm, and the fifth optical filter can filter out second incident light (8) with the wavelength being smaller than 730 nm;

the second image sensor is aligned with the second window (31), and second incident light (8) filtered by the third optical filter or the second optical filter or the fifth optical filter can irradiate the second image sensor, and the second image sensor is used for converting the second incident light (8) passing through the second filter switcher (3) into a second image signal.

3. The camera according to claim 2, further comprising a first circuit board (5) disposed corresponding to the beam splitter (1), wherein the first image sensor is disposed on a side of the first circuit board (5) facing the splitting surface (11), and the first filter switcher (2) is detachably connected to a side of the first circuit board (5) facing the splitting surface (11) by a first fastener.

4. The camera according to claim 2, further comprising a second circuit board (6) disposed corresponding to the beam splitter (1), wherein the second image sensor is disposed on a side of the second circuit board (6) facing the splitting surface (11), and the second filter switcher (3) is detachably connected to a side of the second circuit board (6) facing the splitting surface (11) by a second fastener.

5. The camera according to claim 2, wherein the first filter switcher (2) includes a first housing, a first actuator and a first control circuit, the first actuator and the first control circuit being provided in the first housing, and the first window (21) being provided on the first housing, the first control circuit being electrically connected to the first actuator, the first actuator pushing or pulling the first optical filter into or out of the first window (21) or pushing or pulling the second optical filter into or out of the first window (21) by grasping the first optical filter or the second optical filter.

6. The camera according to claim 2, wherein the second filter switcher (3) includes a second housing, a second actuator and a second control circuit, the second actuator and the second control circuit being provided in the second housing, and the second window (31) being provided on the second housing, the second control circuit being electrically connected to the second actuator, the second actuator pushing or pulling the third optical filter into or out of the second window (31), or pushing or pulling the fourth optical filter into or out of the second window (31), or pushing or pulling the fifth optical filter into or out of the second window (31), by grasping the third optical filter or the fourth optical filter or the fifth optical filter.

7. The camera of claim 1, wherein the predetermined resolution is 200 ten thousand pixels.

8. The camera of claim 7, wherein the first image sensor has a resolution of 100 ten thousand pixels; and/or the presence of a catalyst in the reaction mixture,

the resolution of the second image sensor is 200 ten thousand pixel points, 400 ten thousand pixel points, 800 pixel points or 1200 ten thousand pixel points.

9. The camera according to claim 1, characterized in that the camera further comprises a zoom lens (4), the zoom lens (4) is provided with a light outlet (41), and the light outlet (41) is aligned with the beam splitter (1) so that the light entering the camera enters the beam splitter (1) from the light outlet (41).

10. The camera according to claim 1, wherein the beam splitter (1) has a cross-sectional shape of an isosceles right triangle, and the splitting surface (11) is disposed on an inclined surface of the beam splitter (1).