WO2017219590A1

WO2017219590A1 - Image collection apparatus and panoramic camera

Info

Publication number: WO2017219590A1
Application number: PCT/CN2016/105550
Authority: WO
Inventors: 吴君安
Original assignee: 乐视控股（北京）有限公司; 乐视移动智能信息技术（北京）有限公司
Priority date: 2016-06-24
Filing date: 2016-11-12
Publication date: 2017-12-28
Also published as: CN105979128A

Abstract

The embodiments of the present invention relate to the technical field of image collection, and in particular to an image collection apparatus and a panoramic camera. The image collection apparatus comprises a lens and an image sensor, wherein the lens comprises at least two lens groups, and each of the lens groups is arranged along an optical path of the lens; the number of image sensors is one; the optical path of the lens extends to a light-sensitive surface of the image sensor; the lens further comprises a plane reflection mirror, and the plane reflection mirror is arranged on an optical path between any two adjacent lens groups, so that the optical path of the lens has a turning angle. By means of the embodiments of the present invention, a space occupied by an image collection apparatus can be reduced.

Description

Image acquisition device and panoramic camera

The present application is filed on the basis of the Chinese Patent Application Serial No.

[Technical Field]

The present patent application relates to the field of image acquisition technologies, and in particular, to an image acquisition device and a panoramic camera.

【Background technique】

With the continuous development of image acquisition technology, panoramic video and panoramic photos are increasingly favored by people. Generally, a panoramic camera can be used to capture a panoramic video and a panoramic photo. The panoramic camera includes an image capturing device for collecting image information, and the collected image information can be converted into a panoramic video after being processed. Or a panoramic photo.

A conventional image capture device includes two sets of fisheye lens and image sensor, each set of fisheye lens comprising a plurality of lens groups, each lens group comprising one or more lenses. Each lens group and image sensor are distributed in the same direction.

However, in the process of implementing the present invention, the inventors have found that at least the following problems exist in the prior art: in the above structure, each lens group and image sensor are distributed along the same direction, and the distribution of the fisheye lens and the image sensor in the direction The large size causes the image capture device to take up too much space. For example, when the fisheye lens is two groups, the optical vertex spacing between the two sets of fisheye lenses (the optical vertex spacing is the distance between the vertices of the two fisheye lenses on the main optical axis) is too large, so the image The acquisition device takes up a lot of space.

[Summary of the Invention]

It is an object of some embodiments of the present invention to provide an image capture device and to include the same A panoramic camera of the image capture device, thereby reducing the space occupied by the image capture device.

In a first aspect, an embodiment of the present invention provides an image capture device including a lens and an image sensor, the lens including at least two lens groups disposed along an optical path of the lens, the number of the image sensors being one An optical path of the lens extends to a photosensitive surface of the image sensor, the lens further comprising a planar mirror disposed on any two adjacent ones of the at least two lens groups The optical path between the lens groups is such that the optical path of the lens has a turning angle.

In an embodiment of the invention, the number of lenses is at least two.

In an embodiment of the invention, the number of the lenses is two, and the main optical axes of the two lenses are parallel to each other or on the same straight line.

In an embodiment of the invention, the incident angle of the planar mirror is 45°.

In an embodiment of the invention, the number of the lenses is two, and the main optical axes of the two lenses are parallel to each other or on the same straight line, and the angle between the two planar mirrors is 90. °.

In an embodiment of the present invention, in the at least two lens groups, two of the lens groups located at the foremost end of the optical path of the lens are a first lens group and a second lens group, respectively, and the plane reflection A mirror is disposed on the optical path between the first lens group and the second lens group.

In an embodiment of the invention, the lens is a fisheye lens.

In an embodiment of the invention, the lens is of a unitary structure.

In an embodiment of the invention, the image sensor has a web ratio of 16:9.

In a second aspect, an embodiment of the present invention provides a panoramic camera, which includes the image collection device provided by any embodiment of the present invention.

The technical solutions provided by the embodiments of the present invention can achieve the following beneficial effects:

The image acquisition device provided by the embodiment of the invention adds a plane mirror between two adjacent lens groups, so that the optical path of the lens is turned. At this time, the distribution direction of the entire image acquisition device is no longer a single direction. After this setting, a part of the structure of the image acquisition device can be arranged in other directions according to the actual situation, thereby fully utilizing other spaces to realize the arrangement of the image acquisition device, thereby achieving the effect of reducing the space occupied by the image acquisition device.

The above general description and the following detailed description are merely exemplary and are not intended to limit the invention.

[Description of the Drawings]

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly introduced one by one. It is obvious that the drawings in the following description are Some embodiments of the present invention may also be used to obtain other drawings based on these drawings without departing from the art.

FIG. 1 is a schematic structural diagram of an image collection device according to an embodiment of the present invention.

Reference mark:

10-shot;

100-plane mirror;

101-first lens group;

102-second lens group;

103-third lens group;

104-fourth lens group;

20-image sensor.

The accompanying drawings, which are incorporated in the specification of FIG

【detailed description】

The invention will be further described in detail below with reference to specific embodiments and drawings.

As shown in FIG. 1 , an embodiment of the present invention provides an image capture device including a lens 10 and an image sensor 20 .

The lens 10 may include a plane mirror 100 and at least two lens groups, each lens group being disposed along the optical path of the lens. In one embodiment, the number of lens groups can be selected to be four, that is, as shown in FIG. The first lens group 101, the second lens group 102, the third lens group 103, and the fourth lens group 104 are sequentially disposed, and the lenses included in the four may be set to one, two or more, and the shape and size of the lens. It can be arbitrarily set, such as a convex lens, a concave lens, or the like.

The plane mirror 100 is disposed on an optical path between any two adjacent lens groups such that the optical path of the lens has a turning angle. That is to say, in a plurality of lens groups, the plane mirror 100 may be disposed only between two adjacent lens groups, and the two lens groups may be arbitrarily selected. Referring to the structure shown in FIG. 1, the plane mirror 100 may be disposed between the first lens group 101 and the second lens group 102, or between the second lens group 102 and the third lens group 103, or between the third lens group 103 and the fourth lens group 104, of course, A planar mirror 100 may also be disposed between the first lens group 101 and the second lens group 102, between the second lens group 102 and the third lens group 103, and between the third lens group 103 and the fourth lens group 104. . When the planar mirror 100 is set, the light is reflected by the planar mirror 100.

The number of image sensors 20 is one. The optical path of the lens 10 extends to the photosensitive surface of the image sensor 20, which is commonly referred to as a "target surface."

The image acquisition device provided by the embodiment of the present invention adds a plane mirror 100 between two adjacent lens groups, so that the optical path of the lens 10 is turned. At this time, the distribution direction of the entire image capturing device is no longer a single direction. . After this setting, a part of the structure of the image acquisition device can be arranged in other directions according to the actual situation, thereby fully utilizing other spaces to realize the arrangement of the image acquisition device, thereby achieving the effect of reducing the space occupied by the image acquisition device. In addition, after the image sensor 20 in the embodiment of the present invention is set to only one, the ISP (Image Signal Processing) included in the image processor (the image processor is used for post-processing the image obtained by the image acquisition device) is included. There is no special requirement for the number of units, that is, the image acquisition device provided by the embodiment of the present invention can be applied to an image processor having one, two or more ISP units, and thus the application range of the image acquisition device More extensive.

In a specific embodiment, the number of the lenses 10 can be selected as only one, thereby realizing a relatively basic image capturing function. Of course, in order to make the collected image information more comprehensive, the lens 10 can be set to at least two. Further, the number of the lenses 10 may be two, the two lenses The main optical axes of 10 are parallel or on the same line, and the optical vertex spacing between the two lenses 10 (this optical vertex spacing is the distance between the vertices of the two lenses 10 on the main optical axis) is relatively small. At this time, the two lenses 10 are arranged facing away, thereby collecting image information in two opposite directions, providing users with more comprehensive image information.

In the field of image acquisition technology, the lens 10 can be selected as a wide-angle lens, which can collect more information within a limited field of view. Further, the present invention sets the lens 10 as a fisheye lens, which is a fisheye lens. A super wide-angle lens, since the angle of view of the fisheye lens is greater than 180°, the fisheye lens can be used to obtain image information in a larger field of view. Especially when the lens 10 is set to two, and the main optical axes of the two lenses 10 are on the same straight line, after the fisheye lens is used for the two lenses 10, the information collected by the two fisheye lenses will coincide. According to the overlapping part, the image information collected by the two fisheye lenses can be processed, for example, a series of processing steps such as unfolding, splicing, and merging, and finally a panoramic video or a panoramic photo is obtained.

In actual production, the parts of the lens 10 can be separately produced and then assembled together, or the lens 10 can be processed at one time by an integrated molding process, thereby simplifying the processing of the lens 10 and improving the structural strength of the lens 10. . When the lens 10 is set to two or more, all of the lenses 10 can be further processed in one time by an integral molding process, so that all the lenses 10 are finally presented in a one-piece structure.

For the specific setting form of the plane mirror 100, the following options can be made:

The angle of incidence of the plane mirror 100 is 45°, at which time the optical path of the lens 10 will be rotated by 90°, and the space occupied by the image acquisition device is further reduced. At the same time, this structure also facilitates post processing of the image.

When the number of the lenses 10 is two, and the main optical axes of the two lenses 10 are parallel to each other or on the same straight line, the angle between the two planar mirrors 100 can be set to 90°. After the setting, the incident angle angles of the two plane mirrors 100 are both 45°, and the optical paths of the two lenses 10 are 90° turning, so that the space occupied by the image capturing device is smaller. The lens 10 may include the first lens group 101, the second lens group 102, the third lens group 103, and the fourth lens group 104, where the first lens group 101 and the second lens group 102 are located at the optical path of the lens 10. The front end (the front end can refer to the position shown in FIG. 1), so the plane mirror 100 can be disposed on The optical path between the first lens group 101 and the second lens group 102. This set position of the plane mirror 100 will cause more components in the lens 10 to be disposed in other directions, further enhancing the technical effect of reducing the space occupied by the image pickup device.

Each of the foregoing structural optimization schemes for the planar mirror 100 can be arbitrarily combined, and each structural optimization scheme can also be combined with the structural scheme of other parts of the image capturing device, and the technical solution formed by the combination is also claimed in the present invention. The scope of this will not be repeated here.

The image sensor 20 provided by the embodiment of the present invention is only provided as one. When the lens 10 is set to two or more, the optical path of each lens 10 finally extends to the same image sensor 20. After being set in this way, the image sensor 20 can be automatically exposed and automatically white balanced, so that the brightness and white balance of the images collected by the plurality of lenses 10 tend to be equalized, thereby weakening the seams appearing after the post-processing, thereby improving the image. the quality of.

In order to increase the pixel utilization of the image sensor 20, the aspect ratio of the image sensor 20 may be selected to be 16:9, which is the aspect ratio of the image sensor 20. Since the image information collected by all the lenses 10 needs to be sensed on the image sensor 20 in the embodiment of the present invention, and the image information is generally rectangular after being combined, the above-mentioned 16:9 aspect ratio can be used to reduce the invalidity of the image sensor 20. Part of the area to achieve the aforementioned objectives.

The embodiment of the invention further provides a panoramic camera, which comprises the image acquisition device described in any of the above technical solutions.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

An image capture device comprising a lens and an image sensor, the lens comprising at least two lens groups disposed along an optical path of the lens, the number of the image sensors being one, and an optical path of the lens extending to the image a photosensitive surface of the sensor, wherein the lens further comprises a plane mirror disposed on an optical path between any two adjacent ones of the at least two lens groups, The optical path of the lens is made to have a turning angle.
The image capture device of claim 1 wherein the number of lenses is at least two.
The image pickup device according to claim 1 or 2, wherein the number of the lenses is two, and the main optical axes of the two lenses are parallel to each other or on the same straight line.
The image pickup device according to claim 1, 2 or 3, wherein the incident angle of the plane mirror is 45°.
The image pickup device according to any one of claims 1 to 4, wherein the number of the lenses is two, and the main optical axes of the two lenses are parallel to each other or on the same straight line, the two lenses The angle between the plane mirrors is 90°.
The image pickup device according to any one of claims 1 to 5, wherein, in the at least two lens groups, two lens groups located at the foremost end of the optical path of the lens are respectively a first lens group and a two lens group, the plane mirror being disposed on an optical path between the first lens group and the second lens group.
The image capture device according to any one of claims 1 to 6, wherein the lens is a fisheye lens.
The image pickup device according to any one of claims 1 to 7, wherein the lens is of a unitary structure.
The image pickup device according to any one of claims 1 to 8, wherein the image sensor has a web ratio of 16:9.
A panoramic camera comprising the image capture device of any one of claims 1 to 9.