WO2017121047A1 - 一种摄像头及设有摄像头的终端 - Google Patents

一种摄像头及设有摄像头的终端 Download PDF

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Publication number
WO2017121047A1
WO2017121047A1 PCT/CN2016/079319 CN2016079319W WO2017121047A1 WO 2017121047 A1 WO2017121047 A1 WO 2017121047A1 CN 2016079319 W CN2016079319 W CN 2016079319W WO 2017121047 A1 WO2017121047 A1 WO 2017121047A1
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Prior art keywords
camera
light
polarized light
object point
reflecting surface
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PCT/CN2016/079319
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English (en)
French (fr)
Inventor
潘林凯
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2017121047A1 publication Critical patent/WO2017121047A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a camera and a terminal provided with the camera.
  • terminals such as mobile phones generally have a front camera and a rear camera.
  • the front camera is set to perform self-timer, and the rear camera is set to shoot other scenes.
  • the imaging beams in the current front and rear cameras are all natural light with random polarization, the final photographs will be inferior. For example, when shooting a blue sky, the sky is not blue enough, when the water is photographed, the water is not clear enough, and It is prone to glare.
  • the invention provides a camera and a terminal provided with the camera to solve the problem of poor definition of the scene in the photograph taken by the camera in the related art.
  • An aspect of the present invention provides a camera including: a front camera, a beam shifting device, a rear camera, and an imaging device;
  • the front camera and the rear camera transmit light of the collected object points to the beam shifting device
  • the beam shifting device is an X prism
  • the X prism includes a first diagonal surface and a second diagonal surface, and the first diagonal surface and the second diagonal surface are plated with a polarizing film that converts light of the object point into polarized light.
  • Floor a polarizing film that converts light of the object point into polarized light.
  • the first diagonal surface converts light of an object point transmitted by the front camera into polarized light
  • the second diagonal surface converts light of an object point transmitted by the rear camera into polarization Light
  • the beam shifting device comprises a mirror and a rotating device
  • the mirror includes a first reflective surface, and the first reflective surface is plated with a polarizing film layer for converting light of the object point into polarized light, and the position of the mirror is changed by the rotating device to make the mirror
  • the first reflecting surface converts the light of the object point collected by the front camera into polarized light, or causes the first reflecting surface to convert the light of the object point collected by the rear camera into polarized light.
  • the mirror includes a second reflective surface and a third reflective surface, and the second reflective surface and the third reflective surface are plated with a polarizing film layer for converting light of the object point into polarized light, Rotating means changing the position of the mirror such that the second reflecting surface converts light of the object point collected by the front camera into polarized light, or causes the third reflecting surface to collect the rear camera The light of the object point is converted into polarized light.
  • the rotating device is a central rotating shaft disposed at the center of the mirror.
  • the beam shifting device is a triangular prism
  • the triangular prism includes a fourth reflecting surface and a fifth reflecting surface
  • the fourth reflecting surface and the fifth reflecting surface are plated with the object point
  • the light is converted into a polarizing light polarizing layer
  • the fourth reflecting surface converts light of the object point collected by the front camera into polarized light
  • the fifth reflecting surface collects the object point collected by the rear camera Converting light into polarized light
  • the fourth reflecting surface and the fifth reflecting surface are reflecting surfaces on both sides of the triangular prism.
  • the polarizing film layer includes a polarizing film layer that reflects P-wave polarized light whose vibration direction is parallel to the incident surface, and a polarizing film layer that reflects S-wave polarized light whose vibration direction is perpendicular to the incident surface.
  • the imaging device comprises an imaging lens and a photosensitive device CMOS;
  • the imaging lens images the polarized light on the photosensitive device.
  • the camera further comprises: a motor
  • the motor is configured to control the imaging lens to focus.
  • the motor is a voice coil motor VCM.
  • Another aspect of the present invention provides a terminal provided with any of the above cameras.
  • the present invention converts light of an object point collected by a front camera or a rear camera into polarized light by a beam shifting device in a camera, and causes the imaging device at the rear end to image using the polarized light, thereby Effectively suppressing the harmful light beam different from the specified polarization direction, the shot sky is bluer, the water surface is more clear, and the glare of the photo is less, thereby effectively solving the problem that the photograph taken by the camera in the related art is poor.
  • FIG. 1 is a schematic diagram showing the principle of imaging of a first front camera according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram showing the principle of imaging of a first rear camera according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram showing the principle of imaging of a second front camera according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram showing the principle of imaging of a second rear camera according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram showing the principle of imaging of a third front camera according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram showing the principle of imaging of a third rear camera according to an embodiment of the present invention.
  • the present invention provides a camera in which a beam shifting device is provided, and the light of the object point collected by the front camera or the rear camera is transmitted by the beam shifting device. It is converted into polarized light, and the imaging device at the back end is imaged using the polarized light, thereby realizing clearer photographs and improving the user experience.
  • the embodiment of the present invention provides a camera, see FIG. 1 and FIG. 2, the camera includes a front camera 1, a beam shifting device 2, a rear camera 3, and an imaging device 4;
  • the front camera 1 and the rear camera 3 transmit the collected object point light to the beam shifting device 3; the beam shifting device 2 converts the light of the object point into polarized light, The polarized light is sent to the imaging device 4 for imaging.
  • the present invention converts light of an object point collected by the front camera 1 or the rear camera 3 into polarized light by the beam shifting device 2, and causes the polarized light to be in the imaging device. 4 on imaging.
  • the beam shifting device 2 between the front camera 1 and the rear camera 3, and by the beam shifting device 2, the light of the object point collected by the front camera 1 or the rear camera 3 is converted into polarized light. And imaging the rear-end imaging device 4 using the polarized light, thereby effectively suppressing the harmful light beam different from the specified polarization direction, so that the captured sky is bluer, the water surface is more clear, and the glare of the photo is less, thereby effectively solving the correlation.
  • the problem of the photo taken by the camera is poor.
  • the present invention can better suppress stray light by using polarized light imaging, better image quality can be obtained, and the front camera is fixed in comparison with the existing fixed focus front camera.
  • the camera 1 and the rear camera 3 are coupled together, so the invention can greatly improve the imaging quality of the front camera 1 and thus better meet the user's needs.
  • the beam shifting device 2 of the present invention is any device capable of performing polarization filtering, such as an X prism coated with a polarizing film, a mirror or a triangular prism, and the like.
  • FIG. 1 and FIG. 2 are schematic diagrams showing the structure of a camera according to an embodiment of the present invention.
  • the X prism includes a first diagonal surface and a second diagonal surface, and the first diagonal The surface and the second diagonal surface are plated with a polarizing film layer for converting light of the object point into polarized light;
  • the first diagonal surface 21 converts the light of the object point sent by the front camera 1 into polarized light
  • the second diagonal surface 22 points the object point sent by the rear camera 22 Light is converted to polarized light
  • the camera of the present invention converts light of an object point collected by the front camera 1 or the rear camera 3 into polarized light by using an X prism coated with a polarizing film, and causes the polarized light to be in the imaging device. 4 on imaging.
  • the first diagonal surface 21 and the second diagonal surface 22 of the X prism are respectively plated with a polarizing film layer, and the polarizing film layer on the first diagonal surface 21 makes the The light of the object point collected by the front camera 1 is converted into polarized light, and the polarized light is imaged on the imaging device 4, and the polarizing film layer on the second diagonal surface 22 causes the rear camera 3 to The collected object point light is converted into polarized light and the polarized light is imaged on the imaging device 4; wherein the first diagonal surface 21 and the second focusing surface 22 are the X prism Two diagonal faces.
  • FIG. 1 is a schematic diagram of the principle of the first front camera imaging according to the embodiment of the present invention.
  • the lens 11 of the front camera 1 collects the light of the object point, and the shutter 12 of the front camera 1 controls the exposure.
  • the first diagonal surface 21 of the X prism coated with the polarizing film layer converts the light of the object point collected by the lens 11 into polarized light, and the converted polarized light passes through the imaging lens 41 in the photosensitive device (Complementary Metal-Oxide) Semiconductor (referred to as CMOS) 42 performs imaging because the polarizing film layer on the first diagonal surface 21 of the X prism converts random natural light of the polarization state into fully polarized light, and causes the imaging device 4 at the rear end to use the fully polarized light.
  • Imaging which effectively suppresses harmful light beams that are different from the specified polarization direction, makes the shot sky bluer, the water surface clearer and the glare of the photo less.
  • FIG. 2 is a schematic diagram showing the principle of the imaging of the first rear camera according to the embodiment of the present invention.
  • FIG. 2 of the embodiment of the present invention is a lens of the rear camera 3 through the second diagonal surface 22 of the X prism.
  • the light of the collected object points is converted into polarized light, and the converted polarized light is imaged on the photosensitive device 42 via the imaging lens 41, wherein the shutter 31 of the rear camera 3 controls the exposure state.
  • the polarizing film layer according to the embodiment of the present invention includes a polarizing film layer (referred to as a first polarizing film layer) that reflects P-wave polarized light whose vibration direction is parallel to the incident surface, and the vibration direction and incidence.
  • a polarizing film layer (referred to as a second polarizing film layer) that reflects the S-wave polarized light perpendicular to the surface.
  • the first plating film layer is plated on the first diagonal surface 21 of the X prism, so that the incident polarization state is a random natural light, and the polarization direction of the emitted light wave is parallel to the incident surface, that is, the polarization.
  • the film only reflects the remaining light beam in a direction parallel to the incident surface;
  • the second diagonal surface 22 is plated with a second polarizing film layer, and the film functions to convert the incident polarization state into random natural light into an outgoing light.
  • the direction of vibration is perpendicular to the polarized beam of the incident surface, that is, the film transmits only the entire beam whose direction of vibration is perpendicular to the plane of incidence.
  • the imaging light collected by the front lens 1 can be well transmitted to the imaging system 4 at the rear end, and the rear lens 2 is also the same principle, and finally the photo taken by the camera is taken. The effect is better, which greatly improves the user experience.
  • Another embodiment of the present invention further provides a camera.
  • the camera converts the light of the object point collected by the front camera 1 or the rear camera 3 into a mirror with a polarizing film.
  • the light is polarized and the imaging device 4 at the rear end is imaged using the polarized light.
  • the beam shifting device of the present invention includes a mirror and a rotating device 24;
  • the mirror includes a first reflecting surface 23 plated with a polarizing film layer for converting light of the object point into polarized light, and the position of the mirror is changed by the rotating device 24 So that the first reflecting surface 23 will be the front
  • the light of the object point collected by the camera 1 is converted into polarized light, or the first reflecting surface 23 converts the light of the object point collected by the rear camera 3 into polarized light.
  • the mirror includes a second reflective surface and a third reflective surface, and the second reflective surface and the third reflective surface are plated with a polarizing film layer for converting light of the object point into polarized light,
  • the rotating device 24 changes the position of the mirror such that the second reflecting surface converts the light of the object point collected by the front camera 1 into polarized light, or causes the third reflecting surface to turn the rear camera The light of the collected object points is converted into polarized light.
  • the present invention is coated with a first polarizing film layer or a second polarizing film layer on the first reflecting surface 23 of the mirror, the first reflecting surface 23 making the front camera 1
  • the collected object point light is converted into polarized light, and the polarized light is imaged on the imaging device 4, changing the position of the mirror such that the first reflecting surface 23 collects the rear camera
  • the light of the object point is converted into polarized light, and the polarized light is imaged on the imaging device 4;
  • the second reflecting surface of the mirror may be coated with a first polarizing film layer or a second polarizing film layer, and the fourth reflecting surface of the mirror (with The other reflective surface opposite to the reflective surface, that is, the other reflective surface of the mirror, is plated with a first polarizing film layer or a second polarizing film layer, and the second reflecting surface causes the object collected by the front camera Converting the light into polarized light and imaging the polarized light on the imaging device 4, changing the position of the mirror such that the third reflecting surface will light the object point collected by the rear camera Converting to polarized light and imaging the polarized light on the imaging device, wherein the second reflective surface and the fourth reflective surface are reflective surfaces disposed on opposite sides of the mirror.
  • the present invention can employ a polarizing film on a reflective surface of the mirror, and rotate the mirror to image the object points collected by the front and rear cameras, or on the two reflecting surfaces of the mirror.
  • the polarizing film is separately plated, and then the mirror is collected to image the object points collected by the front and rear cameras.
  • the present invention collects the light of the scene through the lens 11 of the front camera 1, and then controls the exposure time through the shutter 12 of the front camera 1, and then passes through the first reflecting surface of the mirror a. 23 performs reflection and forms polarized light, and finally the polarized light is imaged onto the CMOS by the microscopically movable imaging lens 41, and the output photo is displayed on the screen.
  • the present invention rotates the rotating device c, collects the light of the scene through the lens 32 of the rear camera 3, and then controls the exposure time through the shutter 31 of the rear camera 3, The first reflecting surface 23 of the mirror is then reflected, and polarized light is formed, and finally the polarized light is imaged onto the CMOS by the microscopically movable imaging lens 41, and the output photo is displayed on the screen.
  • the mirror shown in FIG. 3 and FIG. 4 is a triangular mirror, and a reflective surface is plated on one reflective surface of the triangular mirror.
  • a reflective surface is plated on one reflective surface of the triangular mirror.
  • the two reflective surfaces or the three reflective surfaces of the triangular mirror are respectively plated with a polarizing film, and in use, the triangular mirror is rotated to realize imaging of the front camera and the rear camera, and the present invention can also adopt a rectangular mirror.
  • the polarizing film is plated on both reflective surfaces of the rectangular mirror, and the specific implementation method is similar to the method of the above-mentioned triangular mirror, and it is also necessary to rotate the mirror to realize the front and rear exposure.
  • the light of the object point collected by the head is converted into polarized light and subjected to final imaging.
  • the present invention performs blackening on other unused sides of the mirror, for example, when the mirror is provided with only one third reflecting surface 23, except for the third reflecting surface of the mirror. 23, the other faces are set to black surface 25.
  • the center of the mirror is provided with a central rotating shaft 24, and the mirror rotates around the central rotating shaft 24 to change the position of the mirror, thereby realizing the front camera 1
  • the light of the object point collected by the rear camera 3 is converted into polarized light, and polarization imaging is performed.
  • the embodiment of the present invention further provides a camera.
  • the beam shifting device of the camera is a triangular prism, and the triangular prism includes a fourth reflecting surface 26 and a fifth reflection.
  • the surface 27, the fourth reflecting surface 26 and the fifth reflecting surface 27 are plated with a polarizing film layer for converting light of the object point into polarized light, and the fourth reflecting surface 26 is to be front-mounted
  • the light of the object point collected by the camera 1 is converted into polarized light
  • the fifth reflecting surface 27 converts the light of the object point collected by the rear camera 3 into polarized light;
  • the fourth reflecting surface 26 and the fifth reflecting surface 27 are reflecting surfaces on both sides of the triangular prism.
  • the camera of the present invention converts light of an object point collected by the front camera 1 or the rear camera 3 into polarized light by using a triangular prism plated with a polarizing film layer, and causes the imaging device 4 at the rear end to image using the polarized light. .
  • the fourth reflective surface 26 of the triangular prism of the embodiment of the present invention is plated with a first polarizing film layer or a second polarizing film layer, and a fifth reflecting surface of the triangular prism.
  • the fourth reflecting surface 26 converts light of the object point collected by the front camera 1 into polarized light, and causes the polarized light to be in the Imaging on the imaging device 4,
  • the fifth reflecting surface 27 converts light of the object point collected by the rear camera 3 into polarized light, and images the polarized light on the imaging device 4;
  • the fourth reflecting surface 26 and the fifth reflecting surface 27 are reflecting surfaces on both sides of the triangular prism.
  • the present invention collects the light of the scene through the lens 11 of the front camera 1, and then controls the exposure time through the shutter 12 of the front camera 1, and then passes through the fourth reflecting surface 26 of the triangular prism. Reflection is performed, and polarized light is formed, and finally, polarized light is imaged onto the CMOS by the microscopically movable imaging lens 41, and a photo is outputted to the screen.
  • the present invention collects the light of the scene through the lens 32 of the rear camera 3, and then controls the exposure time through the shutter 31 of the rear camera 3, and then performs the fifth reflecting surface 27 of the triangular prism.
  • the light is reflected and polarized, and finally the polarized light is imaged onto the CMOS by the microscopically movable imaging lens 41, and the output photo is displayed on the screen.
  • the imaging device 4 includes an imaging lens 41 and a photosensitive device 42 that images the polarized light on the photosensitive device 42.
  • the motor of the camera of the present invention is a voice coil motor (VoiceCoilActuator/VoiceCoilMotor, abbreviated as VCM), and the imaging lens 41 is controlled by a motor to perform focusing.
  • VCM voice coil motor
  • Step 1 Start the camera, power on the camera, initialize, and so on, so that the camera is in normal working state;
  • Step 2 The front camera 1 is activated, and the shutter 12 of the front camera 1 is opened, and the light of the scene is collected by the lens 11 and transmitted to the first diagonal surface 21 of the X prism, and the P wave parallel to the incident surface is reflected into the image.
  • System 4
  • Step 3 Drive the focus motor to move along the axial direction of the front camera 1 and the rear camera 3 to realize the auto focus function and display the preview screen on the screen.
  • the embodiment of the present invention provides a terminal, which includes any camera described in the embodiment of the camera.
  • the terminal in the embodiment of the present invention is any terminal that can be provided with a camera, such as a mobile phone, a computer, a tablet computer, etc. Wait.
  • the invention transforms and optimizes the imaging beam by the beam shifting device, uses polarized light imaging, and can suppress unnecessary stray light well, thereby greatly improving the image quality; secondly, the invention adopts the beam shifting device to front
  • the camera and rear camera are coupled together, using the same focusing motor, imaging lens and CMOS, making the camera cost significantly lower.
  • a camera and a terminal provided with the camera provided by the embodiment of the present invention have the following beneficial effects: by providing a beam shifting device in the camera and collecting the front camera or the rear camera by the beam shifting device.
  • the light of the object point is converted into polarized light, and the imaging device at the rear end is imaged using the polarized light, thereby effectively suppressing the harmful light beam different from the specified polarization direction, so that the captured sky is bluer, the water surface is clearer, and the glare of the photo is glare. Less, and thus effectively solve the problem of poor performance of photographs taken by the camera in the related art.

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Abstract

本发明提供了一种摄像头及设有摄像头的终端，本发明通过在摄像头中设置光束偏移装置，并通过光束偏移装置使前置摄像头或后置摄像头收集的物点的光转换为偏振光，并使后端的成像装置使用该偏振光成像，从而有效的抑制了与指定偏振方向不同的有害光束，使得拍出的天空更蓝、水面更加清澈且照片的眩光更少，进而有效解决了相关技术中摄像头拍摄出的照片的效果差的问题。

Description

一种摄像头及设有摄像头的终端 技术领域
本发明涉及通信技术领域，特别是涉及一种摄像头及设有摄像头的终端。
背景技术
目前手机等终端一般都具有前置摄像头和后置摄像头，前置摄像头设置为用户进行自拍，后置摄像头设置为用户对其他景物等进行拍摄。
由于目前的前后置摄像头中的成像光束均为偏振态随机的自然光，所以会使得最终拍摄出的照片的效果较差，如，拍摄蓝天时，天不够蓝，拍摄水面时，水不够清澈，且容易出现眩光。
发明内容
本发明提供一种摄像头及设有摄像头的终端，以解决相关技术中摄像头拍摄照片中的景物的清晰度差的问题。
本发明一方面提供了一种摄像头，包括：前置摄像头、光束偏移装置、后置摄像头和成像装置；
所述前置摄像头和所述后置摄像头将收集到的物点的光发送给所述光束偏移装置；
所述将所述物点的光转换为偏振光，并将所述偏振光发送给所述成像装置进行成像。
优选地，所述光束偏移装置为X棱镜；
所述X棱镜包括第一对角面和第二对角面，所述第一对角面和所述第二对角面上均镀有使所述物点的光转换为偏振光的偏振膜层；
其中，所述第一对角面将所述前置摄像头发送来的物点的光转换为偏振光，所述第二对角面将所述后置摄像头发送来的物点的光转换为偏振光。
优选地，所述光束偏移装置包括反射镜和转动装置；
所述反射镜包括第一反射面，所述第一反射面上镀有使所述物点的光转换为偏振光的偏振膜层，通过所述转动装置改变所述反射镜的位置，使所述第一反射面将所述前置摄像头收集的物点的光转换为偏振光，或者使所述第一反射面将所述后置摄像头收集的物点的光转换为偏振光。
或者，
所述反射镜包括第二反射面和第三反射面，所述第二反射面和所述第三反射面上镀有使所述物点的光转换为偏振光的偏振膜层，通过所述转动装置改变所述反射镜的位置，使所述第二反射面将所述前置摄像头收集的物点的光转换为偏振光，或者使所述第三反射面将所述后置摄像头收集的物点的光转换为偏振光。
优选地，所述转动装置为设置在所述反射镜中心的中心转轴。
优选地，所述光束偏移装置为三角棱镜，所述三角棱镜包括第四反射面和第五反射面，所述第四反射面和所述第五反射面上均镀有使所述物点的光转换为偏振光的偏振膜层，所述第四反射面将所述前置摄像头收集的物点的光转换为偏振光，所述第五反射面将所述后置摄像头收集的物点的光转换为偏振光；
其中，所述第四反射面和所述第五反射面为所述三角棱镜的两侧的反射面。
优选地，所述偏振膜层包括：使振动方向与入射面平行的P波偏振光进行反射的偏振膜层，以及使振动方向与入射面垂直的S波偏振光进行反射的偏振膜层。
优选地，所述成像装置包括成像镜头和感光器件CMOS；
所述成像镜头使所述偏振光在所述感光器件上进行成像。
优选地，该摄像头还包括：马达；
所述马达，设置为控制所述成像镜头进行对焦。
优选地，所述马达为音圈马达VCM。
本发明另一方面提供了一种设有上述任意一种摄像头的终端。
本发明有益效果如下：
本发明通过在摄像头中设置光束偏移装置，并通过光束偏移装置使前置摄像头或后置摄像头收集的物点的光转换为偏振光，并使后端的成像装置使用该偏振光成像，从而有效的抑制了与指定偏振方向不同的有害光束，使得拍出的天空更蓝、水面更加清澈且照片的眩光更少，进而有效解决了相关技术中摄像头拍摄出的照片的效果差的问题。
附图说明
图1是本发明实施例的第一种前置摄像头成像的原理示意图；
图2是本发明实施例的第一种后置摄像头成像的原理示意图；
图3是本发明实施例的第二种前置摄像头成像的原理示意图；
图4是本发明实施例的第二种后置摄像头成像的原理示意图；
图5是本发明实施例的第三种前置摄像头成像的原理示意图；
图6是本发明实施例的第三种后置摄像头成像的原理示意图。
具体实施方式
为了解决相关技术中摄像头拍摄照片效果差的问题，本发明提供了一种摄像头，该摄像头中设有光束偏移装置，通过光束偏移装置使前置摄像头或后置摄像头收集的物点的光转换为偏振光，并使后端的成像装置使用该偏振光成像，从而实现拍出的照片更清晰，进而提高了用户体验。以下结合附图以及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不限定本发明。
摄像头实施例
本发明实施例提供了一种摄像头，参见图1和图2，该摄像头包括前置摄像头1、光束偏移装置2、后置摄像头3以及成像装置4；
所述前置摄像头1和所述后置摄像头3将收集到的物点的光发送给所述光束偏移装置3；所述光束偏移装置2将所述物点的光转换为偏振光，并将所述偏振光发送给所述成像装置4进行成像。
也就是说，本发明通过所述光束偏移装置2使所述前置摄像头1或所述后置摄像头3收集的物点的光转换为偏振光，并使所述偏振光在所述成像装置4上成像。
即，通过在前置摄像头1和后置摄像头3之间设置光束偏移装置2，并通过该光束偏移装置2使前置摄像头1或后置摄像头3收集的物点的光转换为偏振光，并使后端的成像装置4使用该偏振光成像，从而有效的抑制了与指定偏振方向不同的有害光束，使得拍出的天空更蓝、水面更加清澈且照片的眩光更少，进而有效解决相关技术中摄像头拍摄出的照片的效果差的问题。
简单来说，由于本发明通过使用偏振光成像，能够更好的抑制杂散光，所以可以获得更好的成像质量，并且相对于现有的固定焦距的前置摄像头，由于本发明是将前置摄像头1和所述后置摄像头3耦合在一起，所以本发明可以大大提高前置摄像头1的成像质量，从而更好的满足用户需求。
需要说明的是，本发明所述的光束偏移装置2为任意能够进行偏振滤光的装置，如镀有偏振膜的X棱镜、反射镜或者三角棱镜等等。
图1和图2为本发明实施例的一种摄像头的结构示意图，如图1和图2所示，所述X棱镜包括第一对角面和第二对角面，所述第一对角面和所述第二对角面上均镀有使所述物点的光转换为偏振光的偏振膜层；
其中，所述第一对角面21将所述前置摄像头1发送来的物点的光转换为偏振光，所述第二对角面22将所述后置摄像头22发送来的物点的光转换为偏振光。
具体来说，本发明的摄像头采用镀有偏振膜的X棱镜使前置摄像头1或所述后置摄像头3收集的物点的光转换为偏振光，并使所述偏振光在所述成像装置4上成像。
具体实施时，本发明实施例在X棱镜的第一对角面21和第二对角面22上均上镀有偏振膜层，所述第一对角面21上的偏振膜层使所述前置摄像头1收集的物点的光转换为偏振光，并使所述偏振光在所述成像装置4上成像，所述第二对角面22上的偏振膜层使所述后置摄像头3收集的物点的光转换为偏振光，并使所述偏振光在所述成像装置4上成像；其中，所述第一对角面21和所述第二对焦面22为所述X棱镜的两个对角面。
具体的，图1是本发明实施例的第一种前置摄像头成像的原理示意图，如图1所示，前置摄像头1的镜头11收集物点的光线，前置摄像头1的快门12控制曝光状态，镀有偏振膜层的X棱镜的第一对角面21将镜头11收集的物点的光线转换为偏振光，并将转换后的偏振光经成像镜头41在感光器件(Complementary Metal-Oxide Semiconductor，简称为CMOS)42上进行成像，由于X棱镜的第一对角面21上的偏振膜层将偏振态随机的自然光转换为完全偏振光，并使后端的成像装置4使用该完全偏振光成像，从而有效的抑制了与指定偏振方向不同的有害光束，使得拍出的天空更蓝、水面更加清澈且照片的眩光更少。
图2是本发明实施例的第一种后置摄像头成像的原理示意图，与图1相比，本发明实施例的图2是通过X棱镜的第二对角面22将后置摄像头3的镜头32收集的物点的光线转换为偏振光，并将转换后的偏振光经成像镜头41在感光器件42上进行成像，其中，后置摄像头3的快门31控制曝光状态。
需要说明的是，本发明实施例所述偏振膜层包括：使振动方向与入射面平行的P波偏振光进行反射的偏振膜层(记为第一偏振膜层)，以及使振动方向与入射面垂直的S波偏振光进行反射的偏振膜层(记为第二偏振膜层)。
具体实施时，本发明在X棱镜的第一对角面21上镀第一偏振膜层，使入射的偏振态为随机自然光转化成出射的光波振动方向平行于入射面的偏振光束，即该偏振膜只对振动方向与入射面平行的光束进行反射其余的全部透射；在第二对角面22上镀有第二偏振膜层，该膜的作用为使入射的偏振态为随机自然光转化成出射的振动方向垂直于入射面的偏振光束，即该膜只对振动方向与入射面垂直的光束进行反射其余的全部透射。通过在对角面上镀有指定的膜系能够是前置镜头1收集到的成像光线很好的传输到后端的成像系统4中，后置镜头2也是同样的原理，最终使得摄像头拍摄的照片的效果更好，从而大大提高了用户体验。
本发明实施例还提供了另一种摄像头，具体如图3和图4所示，该摄像头采用镀有偏振膜的反射镜将前置摄像头1或后置摄像头3收集的物点的光转换为偏振光，并使后端的成像装置4使用该偏振光成像。
具体的，本发明的光束偏移装置包括反射镜和转动装置24；
所述反射镜包括第一反射面23，所述第一反射面23上镀有使所述物点的光转换为偏振光的偏振膜层，通过所述转动装置24改变所述反射镜的位置，使所述第一反射面23将所述前 置摄像头1收集的物点的光转换为偏振光，或者使所述第一反射面23将所述后置摄像头3收集的物点的光转换为偏振光。
或者，
所述反射镜包括第二反射面和第三反射面，所述第二反射面和所述第三反射面上镀有使所述物点的光转换为偏振光的偏振膜层，通过所述转动装置24改变所述反射镜的位置，使所述第二反射面将所述前置摄像头1收集的物点的光转换为偏振光，或者使所述第三反射面将所述后置摄像头3收集的物点的光转换为偏振光。
具体来说，对于三角反射镜，本发明通过在反射镜的第一反射面23上镀有第一偏振膜层或者第二偏振膜层，所述第一反射面23使所述前置摄像头1收集的物点的光转换为偏振光，并使所述偏振光在所述成像装置4上成像，改变所述反射镜的位置，以使所述第一反射面23将所述后置摄像头收集的物点的光转换为偏振光，并使所述偏振光在所述成像装置4上成像；
对于可实现双面反射的矩形棱镜，本发明也可以所述反射镜的第二反射面上镀有第一偏振膜层或者第二偏振膜层，所述反射镜的第四反射面(与第二反射面相对的另一个反射面，即反射镜的另一个反射面)上镀有第一偏振膜层或者第二偏振膜层，所述第二反射面使所述前置摄像头收集的物点的光转换为偏振光，并使所述偏振光在所述成像装置4上成像，改变所述反射镜的位置，以使所述第三反射面将所述后置摄像头收集的物点的光转换为偏振光，并使所述偏振光在所述成像装置上成像，其中，所述第二反射面和所述第四反射面为设置在所述反射镜两侧的反射面。
也就是说，本发明可以采用在反射镜的一个反射面上进行镀偏振膜，并通过转动该反射镜以实现对前后置摄像头收集的物点进行成像，也可以在反射镜的两个反射面上分别镀偏振膜，再通过转动反射镜以实现对前后置摄像头收集的物点进行成像。
具体实施时，如图3所示，本发明通过前置摄像头1的镜头11对景物的光线进行收集，然后通过前置摄像头1的快门12控制曝光时间，再经反射镜a的第一反射面23进行反射，并且形成偏振光，最后再由可微移动的成像透镜41将偏振光成像到CMOS上，并输出照片显示到屏幕上。
相应的，如图4所示，相对图3，本发明转动所述转动装置c，通过后置摄像头3的镜头32对景物的光线进行收集，然后通过后置摄像头3的快门31控制曝光时间，再经反射镜的第一反射面23进行反射，并且形成偏振光，最后再由可微移动的成像透镜41将偏振光成像到CMOS上，并输出照片显示到屏幕上。
需要说明的是，本发明图3和图4所示所述的反射镜为三角反射镜，并在该三角反射镜的一个反射面上镀有偏振膜，当然，本领域的技术人员也可以在三角反射镜的两个反射面或者三个反射面上分别进行镀偏振膜，使用时在转动三角反射镜以实现对前置摄像头和后置摄像头的成像，并且本发明也可以采用矩形反射镜，并在矩形反射镜的两个反射面上都镀偏振膜，其具体的实现方法与上述三角反射镜的方法相似，也需要转动反射镜以实现将前后置摄 像头采集的物点的光转换为偏振光，并进行最终成像。
需要说明的是，为了避免引入不必要的光线，本发明在反射镜其他不用的侧面进行涂黑，例如，当反射镜仅设有一个第三反射面23时，除了反射镜的第三反射面23，其他的面都设置为涂黑面25。
具体实施时，本发明实施例所述的反射镜的中心设有中心转轴24，所述反射镜绕所述中心转轴24进行转动，以改变所述反射镜的位置，从而实现对前置摄像头1和后置摄像头3采集到的物点的光转换为偏正光，并进行偏振成像。
当然，本领域的技术人员也可以采用其他的方式控制所述反射镜进行转动，如在所述反射镜的一个侧面上设置转动机构，以控制所述反射镜转动，等等。
具体实施时，本发明实施例还提供了一种摄像头，具体如图5和图6所示，该摄像头的光束偏移装置为三角棱镜，所述三角棱镜包括第四反射面26和第五反射面27，所述第四反射面26和所述第五反射面27上均镀有使所述物点的光转换为偏振光的偏振膜层，所述第四反射面26将所述前置摄像头1收集的物点的光转换为偏振光，所述第五反射面27将所述后置摄像头3收集的物点的光转换为偏振光；
其中，所述第四反射面26和所述第五反射面27为所述三角棱镜的两侧的反射面。
具体来说，本发明的摄像头采用镀有偏振膜层的三角棱镜将前置摄像头1或后置摄像头3收集的物点的光转换为偏振光，并使后端的成像装置4使用该偏振光成像。
可选地，如图5和6所示，本发明实施例所述三角棱镜的第四反射面26上镀有第一偏振膜层或第二偏振膜层，所述三角棱镜的第五反射面27上镀有第一偏振膜层或第二偏振膜层，所述第四反射面26使所述前置摄像头1收集的物点的光转换为偏振光，并使所述偏振光在所述成像装置4上成像，所述第五反射面27使所述后置摄像头3收集的物点的光转换为偏振光，并使所述偏振光在所述成像装置4上成像；其中，所述第四反射面26和所述第五反射面27为所述三角棱镜的两侧的反射面。
具体来说，如图5所示，本发明通过前置摄像头1的镜头11对景物的光线进行收集，然后通过前置摄像头1的快门12控制曝光时间，再经三角棱镜的第四反射面26进行反射，并且形成偏振光，最后再由可微移动的成像透镜41将偏振光成像到CMOS上，并输出照片显示到屏幕上。
相应的，如图6所示，本发明通过后置摄像头3的镜头32对景物的光线进行收集，然后通过后置摄像头3的快门31控制曝光时间，再经三角棱镜的第五反射面27进行反射，并且形成偏振光，最后再由可微移动的成像透镜41将偏振光成像到CMOS上，并输出照片显示到屏幕上。
本发明实施例所述成像装置4包括成像镜头41和感光器件42，所述成像镜头41使所述偏振光在所述感光器件42上进行成像。
本发明的摄像头的马达为音圈马达(VoiceCoilActuator/VoiceCoilMotor，简称为VCM)，通过马达控制所述成像镜头41进行对焦。
为了更好对本发明进行理解，下面将通过一个具体的应用的例子对本发明所述的摄像头进行说明：
步骤一：启动摄像头，给摄像头上电、初始化等一系列操作，使摄像头处于正常工作状态；
步骤二：启动前置摄像头1，前置摄像头1的快门12打开，景物的光线经过镜头11的收集，传输到X棱镜的第一对角面21上，与入射面平行的P波反射进入成像系统4；
步骤三：驱动对焦马达沿前置摄像头1与后置摄像头3的轴向方向移动，实现自动对焦功能，并将预览画面显示在屏幕上。
使用后置摄像头拍照，其上述步骤类似，在此不再赘述。
终端实施例
本发明实施例提供了一种终端，该终端包括摄像头实施例中所述的任意一种摄像头，本发明实施例所述的终端为任意可以设有摄像头的终端，如手机、电脑、平板电脑等等。
本发明实施例中的相关内容可参照摄像头实施例部分进行理解，在此不再赘述。
本发明可以至少可以达到以下的有益效果：
本发明通过光束偏移装置对成像光束进行转折和优化，使用偏振光成像，并能很好的抑制不必要的杂散光，从而大大提升了成像质量；其次本发明通过光束偏移装置将前置摄像头和后置摄像头耦合在一起，使用同一颗调焦马达、成像镜头以及CMOS，使得摄像头的成本大大降低。
尽管为示例目的，已经公开了本发明的优选实施例，本领域的技术人员将意识到各种改进、增加和取代也是可能的，因此，本发明的范围应当不限于上述实施例。
工业实用性
如上所述，本发明实施例提供的一种摄像头及设有摄像头的终端具有以下有益效果：通过在摄像头中设置光束偏移装置，并通过光束偏移装置使前置摄像头或后置摄像头收集的物点的光转换为偏振光，并使后端的成像装置使用该偏振光成像，从而有效的抑制了与指定偏振方向不同的有害光束，使得拍出的天空更蓝、水面更加清澈且照片的眩光更少，进而有效解决了相关技术中摄像头拍摄出的照片的效果差的问题。

Claims (10)

  1. 一种摄像头，包括：前置摄像头、光束偏移装置、后置摄像头和成像装置；
    所述前置摄像头和所述后置摄像头将收集到的物点的光发送给所述光束偏移装置；
    所述光束偏移装置将所述物点的光转换为偏振光，并将所述偏振光发送给所述成像装置进行成像。
  2. 根据权利要求1所述的摄像头，其中，所述光束偏移装置为X棱镜；
    所述X棱镜包括第一对角面和第二对角面，所述第一对角面和所述第二对角面上均镀有使所述物点的光转换为偏振光的偏振膜层；
    其中，所述第一对角面将所述前置摄像头发送来的物点的光转换为偏振光，所述第二对角面将所述后置摄像头发送来的物点的光转换为偏振光。
  3. 根据权利要求1所述的摄像头，其中，所述光束偏移装置包括反射镜和转动装置；
    所述反射镜包括第一反射面，所述第一反射面上镀有使所述物点的光转换为偏振光的偏振膜层，通过所述转动装置改变所述反射镜的位置，使所述第一反射面将所述前置摄像头收集的物点的光转换为偏振光，或者使所述第一反射面将所述后置摄像头收集的物点的光转换为偏振光。
    或者，
    所述反射镜包括第二反射面和第三反射面，所述第二反射面和所述第三反射面上镀有使所述物点的光转换为偏振光的偏振膜层，通过所述转动装置改变所述反射镜的位置，使所述第二反射面将所述前置摄像头收集的物点的光转换为偏振光，或者使所述第三反射面将所述后置摄像头收集的物点的光转换为偏振光。
  4. 根据权利要求3所述的摄像头，其中，
    所述转动装置为设置在所述反射镜中心的中心转轴。
  5. 根据权利要求1所述的摄像头，其中，
    所述光束偏移装置为三角棱镜，所述三角棱镜包括第四反射面和第五反射面，所述第四反射面和所述第五反射面上均镀有使所述物点的光转换为偏振光的偏振膜层，所述第四反射面将所述前置摄像头收集的物点的光转换为偏振光，所述第五反射面将所述后置摄像头收集的物点的光转换为偏振光；
    其中，所述第四反射面和所述第五反射面为所述三角棱镜的两侧的反射面。
  6. 根据权利要求2-5中任意一项所述的摄像头，其中，
    所述偏振膜层包括：使振动方向与入射面平行的P波偏振光进行反射的偏振膜层，以及使振动方向与入射面垂直的S波偏振光进行反射的偏振膜层。
  7. 根据权利要求1-5中任意一项所述的摄像头，其中，所述成像装置包括成像镜头和感光器件CMOS；
    所述成像镜头使所述偏振光在所述感光器件上进行成像。
  8. 根据权利要求7所述的摄像头，其中，还包括：马达；
    所述马达，设置为控制所述成像镜头进行对焦。
  9. 根据权利要求8所述的摄像头，其中，
    所述马达为音圈马达VCM。
  10. 一种终端，包括权利要求1-9中任意一项所述的摄像头。
PCT/CN2016/079319 2016-01-15 2016-04-14 一种摄像头及设有摄像头的终端 WO2017121047A1 (zh)

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