WO2016004761A1 - 一种具有红外灯的鱼眼摄像机 - Google Patents

一种具有红外灯的鱼眼摄像机 Download PDF

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WO2016004761A1
WO2016004761A1 PCT/CN2015/072512 CN2015072512W WO2016004761A1 WO 2016004761 A1 WO2016004761 A1 WO 2016004761A1 CN 2015072512 W CN2015072512 W CN 2015072512W WO 2016004761 A1 WO2016004761 A1 WO 2016004761A1
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infrared
fisheye
lens
camera
infrared lamp
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PCT/CN2015/072512
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English (en)
French (fr)
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王刚强
应亮
郭李辰
程广伟
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杭州海康威视数字技术股份有限公司
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Priority to US14/899,058 priority Critical patent/US20160205318A1/en
Priority to EP15818423.4A priority patent/EP3032819B1/en
Publication of WO2016004761A1 publication Critical patent/WO2016004761A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/30—Transforming light or analogous information into electric information
    • H04N5/33—Transforming infrared radiation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/04—Context-preserving transformations, e.g. by using an importance map
    • G06T3/047—Fisheye or wide-angle transformations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/51—Housings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/698—Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19617—Surveillance camera constructional details
    • G08B13/19626—Surveillance camera constructional details optical details, e.g. lenses, mirrors or multiple lenses
    • G08B13/19628—Surveillance camera constructional details optical details, e.g. lenses, mirrors or multiple lenses of wide angled cameras and camera groups, e.g. omni-directional cameras, fish eye, single units having multiple cameras achieving a wide angle view

Definitions

  • the present application relates to the field of video surveillance, and in particular to a fisheye camera with an infrared lamp.
  • the fisheye camera In order to be able to independently achieve panoramic shooting or monitoring without 360% range of blind angle monitoring, most of the cameras are currently used with a fisheye lens, and in order to match the nighttime shooting of the fisheye lens, the fisheye camera needs to be used with infrared light. Since an ordinary infrared light array can only illuminate an object within a certain angle range in front of the infrared light, the fisheye camera needs to add a condensing lens in front of the infrared light array to achieve the illumination of the fisheye lens.
  • the structure in which the infrared lamp array and the lens are used together not only makes the structure design of the fisheye camera complicated, but also has an influence on the appearance of the camera.
  • the present application provides a fisheye camera with an infrared lamp, which not only simplifies the structure of the fisheye camera but also improves the appearance of the fisheye camera by using an infrared lamp with a lens.
  • the present application provides a fisheye camera with an infrared lamp, including a camera body, a fisheye lens, and a plurality of infrared lamps.
  • the fisheye lens is disposed at a front end of the camera body, and the plurality of infrared lamps are equally spaced apart from the outer side of the fisheye lens;
  • Each of the infrared lamps includes an infrared light emitting diode and a transparent casing enclosing the infrared light emitting diode, and the transparent casing is a collecting lens.
  • the front end of the camera body has a cone
  • the fisheye lens is disposed at a top end of the cone
  • the plurality of infrared lamps are equally angularly disposed on a tapered surface of the cone.
  • the center line of the fisheye lens has an angle with a center line of each of the infrared lamps.
  • the included angle ranges from 40° to 45°.
  • a transmissive infrared lamp cover over the plurality of infrared lamps.
  • the infrared permeable lamp cover is an annular lamp cover covering a tapered surface of the cone, and the fisheye lens protrudes from a center of the infrared permeable lamp cover.
  • the infrared permeable lampshade is a black translucent infrared lampshade.
  • the fisheye camera of the present application uses an infrared lamp with a lens as a nighttime illumination lamp, and separates the existing lens for the infrared lamp array separately provided into each infrared lamp and separately uses and integrates In each of the infrared lamps, the structure of the fisheye camera is greatly simplified, and the concentrating effect of the concentrating lens is enhanced, and the illumination overlap between the plurality of infrared LEDs is avoided.
  • the center line of the fisheye lens in the present application has an angle ⁇ with the center line of each infrared lamp, and the angle of illumination of each infrared lamp can be reduced to the shooting range of the fisheye lens by adjusting the angle ⁇ . .
  • the combination of the plurality of infrared lamps can comprehensively illuminate the shooting range of the fisheye lens, and reduce the overlapping area of the illumination of the adjacent two infrared lamps. Reducing the overlapping area of the illumination can avoid the problem of affecting the captured image due to the local light being too bright.
  • FIG. 1 is an exploded perspective view of a fisheye camera with an infrared lamp of the present application.
  • FIG. 2 is a cross-sectional view of a fisheye camera with an infrared lamp of the present application.
  • the present application provides a fisheye camera with an infrared lamp, including a camera body 10, a fisheye lens 20, and a plurality of infrared lamps 30.
  • the fisheye lens 20 is disposed at the front end of the camera body 10, and a plurality of infrared lamps 30 are disposed at an angular interval outside the fisheye lens 20 to illuminate the imaging range of the fisheye lens 20.
  • each of the infrared lamps 30 includes an infrared light emitting diode (LED) 31 and a transparent casing 32 enclosing the infrared LED, wherein the transparent casing 32 is a collecting lens that radiates infrared rays of the infrared LED.
  • the light is concentrated in a certain range of angles, avoiding the problem of being unable to illuminate the shooting range due to the divergence of light. Its function is the same as that of the existing single lens used for the infrared lamp array, but the volume is much smaller than the existing lens.
  • the fisheye camera of the present application uses an infrared lamp with a lens as a nighttime illumination lamp, and separates an existing lens for an infrared lamp array that is separately provided into each infrared lamp, and is integrated and integrated in In each of the infrared lamps, the structure of the fisheye camera is greatly simplified, and since the condensing lens 32 of each infrared lamp condenses only the light of the infrared lamp 30, it is more targeted, thereby enhancing the concentrating.
  • the concentrating effect of the lens 32 avoids the illumination overlap between the plurality of infrared LEDs.
  • a plurality of infrared lamps 30 are located behind the fisheye lens 20, that is, this The infrared lamps 30 are located on the rear side of the fisheye lens 20 to prevent infrared light from directly entering the fisheye lens 20 and on the side of the fisheye lens 20 to ensure that the infrared lamp 30 can fully illuminate the fisheye lens 20. Shooting area.
  • the front end of the camera body 10 has a cone 11 at which the fisheye lens 20 is disposed, and a plurality of infrared lamps 30 are angularly spaced apart from the cone 11. Cone surface.
  • the center line A of the fisheye lens 20 has an angle ⁇ with the center line B of each of the infrared lamps 30 by the arrangement of the cone 11.
  • Each of the infrared lamps 30 has an illumination angle by the condensing action of the condensing lens 32. Therefore, by adjusting the angle ⁇ , the illumination angle of each of the infrared lamps 30 can be made to fall within the imaging range of the fisheye lens 20.
  • the illumination angle of each of the infrared lamps 30 is mostly greater than or equal to 90°, and by adjusting the angle ⁇ , the illumination angle of the infrared lamp 30 can be at least covered from the vertical direction y to the horizontal level as shown in FIG. 2.
  • the angle ⁇ ranges from 40° to 45°.
  • the combination of the plurality of infrared lamps 30 can completely illuminate the shooting range of the fisheye lens 20, and reduce the overlapping of the illumination of the adjacent two infrared lamps 30. region. Reducing the overlapping area of the illumination can avoid the problem of affecting the captured image due to the local light being too bright.
  • the adjustment of the angle ⁇ can be achieved by adjusting the taper angle of the cone 11.
  • the fisheye camera of the present application may further include a transmissive infrared lamp cover 40 overlying the plurality of infrared lamps 30.
  • the transmissive infrared lamp cover 40 is capable of transmitting infrared light and protecting the infrared lamp 30 below it.
  • the transmissive infrared lamp cover 40 is a black translucent infrared lamp cover, and the visible light cannot be transmitted through the lamp cover 40, so that the effect of improving the appearance can be achieved without affecting the projection of the infrared light.
  • the infrared permeable cover 40 covers the tapered surface of the cone 11.
  • the annular shade, the fisheye lens 10 projects from the central aperture 41 of the transmissive infrared envelope 40, such that the fisheye camera of the present application has an integrated, smooth exterior surface.
  • the fisheye camera of the present application uses an infrared lamp with a lens as a nighttime illumination lamp, and separates the existing lens for the infrared lamp array separately provided into each infrared lamp and separately uses and integrates In each of the infrared lamps, the structure of the fisheye camera is greatly simplified, and the concentrating effect of the concentrating lens is enhanced, and the illumination overlap between the plurality of infrared LEDs is avoided.
  • the center line of the fisheye lens in the present application has an angle ⁇ with the center line of each infrared lamp, and the angle of illumination of each infrared lamp can be reduced to the shooting range of the fisheye lens by adjusting the angle ⁇ . .
  • the combination of the plurality of infrared lamps can comprehensively illuminate the shooting range of the fisheye lens, and reduce the overlapping area of the illumination of the adjacent two infrared lamps. Reducing the overlapping area of the illumination can avoid the problem of affecting the captured image due to the local light being too bright.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Studio Devices (AREA)
  • Stroboscope Apparatuses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

本申请提供的一种具有红外灯的鱼眼摄像机，包括摄像机本体、鱼眼镜头、以及多个红外灯，所述鱼眼镜头设置在摄像机本体的前端，所述多个红外灯等角度间隔地设置在鱼眼镜头的外侧；每个所述红外灯包括红外发光二极管、以及包裹该红外发光二极管的透明壳体，所述透明壳体为聚光透镜。本申请的具有红外灯的鱼眼摄像机通过使用带有透镜的红外灯，不仅简化了鱼眼摄像机的结构，而且能够改善鱼眼摄像机的外观。

Description

一种具有红外灯的鱼眼摄像机
本申请要求于2014年7月11日提交中国专利局、申请号为201420385848.6、申请名称为“一种具有红外灯的鱼眼摄像机”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及视频监控领域，特别涉及一种具有红外灯的鱼眼摄像机。
发明背景
为了能够独立实现360°范围无死角监控的全景拍摄或监测，目前大多采用具有鱼眼镜头的摄像机进行拍摄，而为了配合鱼眼镜头的夜间拍摄，这种鱼眼摄像机需要配合红外灯使用。由于普通的红外灯阵列只能照亮红外灯前方的某一角度范围内的物体，因此这种鱼眼摄像机需要在红外灯阵列的前方增加聚光透镜才能实现鱼眼镜头的拍摄范围的照射。但红外灯阵列和透镜配合使用的结构不仅使鱼眼摄像机的结构设计比较复杂，而且必然对摄像机的外观有所影响。
发明内容
有鉴于此，本申请提供了一种具有红外灯的鱼眼摄像机，通过使用带有透镜的红外灯，不仅简化了鱼眼摄像机的结构，而且能够改善鱼眼摄像机的外观。
本申请提供了一种具有红外灯的鱼眼摄像机，包括摄像机本体、鱼眼镜头、以及多个红外灯，
所述鱼眼镜头设置在摄像机本体的前端，所述多个红外灯等角度间隔地设置在鱼眼镜头的外侧；
每个所述红外灯包括红外发光二极管、以及包裹该红外发光二极管的透明壳体，所述透明壳体为聚光透镜。
优选地，所述摄像机本体的前端具有一圆锥体，所述鱼眼镜头设置于该圆锥体的顶端，所述多个红外灯等角度间隔地设置在该圆锥体的锥面上。
优选地，所述鱼眼镜头的中心线与每个所述红外灯的中心线具有一夹角。
优选地，所述夹角的范围为40°至45°。
优选地，进一步包括覆盖在所述多个红外灯上方的透红外灯罩。
优选地，所述透红外灯罩为覆盖在所述圆锥体的锥面上的环形灯罩，所述鱼眼镜头从该透红外灯罩的中心伸出。
优选地，所述透红外灯罩为黑色透红外灯罩。
从以上技术方案可知，本申请的鱼眼摄像机使用具有透镜的红外灯作为夜间照明灯，将现有的需要单独设置的用于红外灯阵列的透镜分解到每一个红外灯中单独使用，并集成在每一个红外灯中，使得鱼眼摄像机的结构被大大简化，且增强了聚光透镜的聚光效果，避免了多个红外LED之间的照射重叠。
另外，本申请中的鱼眼镜头的中心线与每个红外灯的中心线具有一夹角α，通过调整夹角α可实现使每个红外灯的照射角度均落入鱼眼镜头的拍摄范围。通过根据红外灯的照射角度设置红外灯的数量以及间隔，可使多个红外灯的组合能够全面照射鱼眼镜头的拍摄范围，又减少相邻两个红外灯的照射重叠区域。减少照射重叠区域能够避免由于局部灯光过亮而影响拍摄图像的问题。
附图简要说明
图1为本申请的具有红外灯的鱼眼摄像机的分解示意图。
图2为本申请的具有红外灯的鱼眼摄像机的剖视图。
实施本发明的方式
为使本申请的目的、技术方案及优点更加清楚明白，以下参照附图并举实施例，对本申请进一步详细说明。
如图1所示，本申请提供了一种具有红外灯的鱼眼摄像机，包括摄像机本体10、鱼眼镜头20、以及多个红外灯30。其中，鱼眼镜头20设置在摄像机本体10的前端，多个红外灯30等角度间隔地设置在鱼眼镜头20的外侧，以照射鱼眼镜头20的拍摄范围。
结合图2所示，每个红外灯30包括红外发光二极管(LED)31、以及包裹该红外LED的透明壳体32，其中，该透明壳体32为聚光透镜，其将红外LED发散的红外灯光聚集在一定角度范围内，避免因光线发散而无法照亮拍摄范围的问题，其作用与现有的单独使用的用于红外灯阵列的透镜作用相同，但体积远小于现有的透镜。
如以上方案可知，本申请的鱼眼摄像机使用具有透镜的红外灯作为夜间照明灯，将现有的需要单独设置的用于红外灯阵列的透镜分解到每一个红外灯中单独使用，并集成在每一个红外灯中，使得鱼眼摄像机的结构被大大简化，而且由于每一个红外灯的聚光透镜32只对该红外灯30的灯光进行聚光作用，针对性更强，从而增强了聚光透镜32的聚光效果，避免了多个红外LED之间的照射重叠。
进一步地，如图1所示，为了避免红外灯30的灯光直接射入鱼眼镜头20的拍摄区域，多个红外灯30均位于鱼眼镜头20的侧后方，即这 些红外灯30既位于鱼眼镜头20的后侧，以避免红外灯光直接射入鱼眼镜头20，又位于鱼眼镜头20的侧方，以保证红外灯30能够充分照亮鱼眼镜头20的拍摄区域。
为了合理地设置红外灯30的位置，摄像机本体10的前端具有一圆锥体11，鱼眼镜头20设置于该圆锥体11的顶端，多个红外灯30等角度间隔地设置在该圆锥体11的锥面上。通过圆锥体11的设置，能够便捷地实现鱼眼镜头20与红外灯30之间的合理位置关系。
具体地，如图2所示，通过圆锥体11的设置，鱼眼镜头20的中心线A与每个红外灯30的中心线B具有一夹角α。每个红外灯30通过其聚光透镜32的聚光作用具有一照射角度，因此通过调整夹角α可实现使每个红外灯30的照射角度均落入鱼眼镜头20的拍摄范围内。例如如图2所示，每个红外灯30的照射角度大多大于等于90°，则通过调整夹角α，可使红外灯30的照射角度至少覆盖如图2所示的自垂直方向y至水平方向x这一范围。一般地，夹角α的范围为40°至45°。
而通过根据红外灯30的照射角度设置红外灯30的数量以及间隔，可使多个红外灯30的组合能够全面照射鱼眼镜头20的拍摄范围，又减少相邻两个红外灯30的照射重叠区域。减少照射重叠区域能够避免由于局部灯光过亮而影响拍摄图像的问题。其中夹角α的调整可通过调整圆锥体11的锥角来实现。
为了保护红外灯30和美化鱼眼摄像机的外观，本申请的鱼眼摄像机可进一步包括覆盖在多个红外灯30上方的透红外灯罩40。该透红外灯罩40能够使红外灯光透过，又对其下方的红外灯30起到保护的作用。优选地，透红外灯罩40为黑色透红外灯罩，则可视光不能从该灯罩40透过，则可实现改善外观的作用，又不影响红外灯光的投射。
具体地，如图2所示，透红外灯罩40为覆盖在圆锥体11的锥面上 的环形灯罩，鱼眼镜头10从该透红外灯罩40的中心孔41中伸出，使得本申请的鱼眼摄像机具有一体化光洁的外部表面。
从以上技术方案可知，本申请的鱼眼摄像机使用具有透镜的红外灯作为夜间照明灯，将现有的需要单独设置的用于红外灯阵列的透镜分解到每一个红外灯中单独使用，并集成在每一个红外灯中，使得鱼眼摄像机的结构被大大简化，且增强了聚光透镜的聚光效果，避免了多个红外LED之间的照射重叠。
另外，本申请中的鱼眼镜头的中心线与每个红外灯的中心线具有一夹角α，通过调整夹角α可实现使每个红外灯的照射角度均落入鱼眼镜头的拍摄范围。通过根据红外灯的照射角度设置红外灯的数量以及间隔，可使多个红外灯的组合能够全面照射鱼眼镜头的拍摄范围，又减少相邻两个红外灯的照射重叠区域。减少照射重叠区域能够避免由于局部灯光过亮而影响拍摄图像的问题。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请保护的范围之内。

Claims (7)

  1. 一种具有红外灯的鱼眼摄像机，其特征在于，包括摄像机本体、鱼眼镜头、以及多个红外灯，
    所述鱼眼镜头设置在摄像机本体的前端，所述多个红外灯等角度间隔地设置在鱼眼镜头的外侧；
    每个所述红外灯包括红外发光二极管、以及包裹该红外发光二极管的透明壳体，所述透明壳体为聚光透镜。
  2. 如权利要求1所述的鱼眼摄像机，其特征在于，所述摄像机本体的前端具有一圆锥体，所述鱼眼镜头设置于该圆锥体的顶端，所述多个红外灯等角度间隔地设置在该圆锥体的锥面上。
  3. 如权利要求2所述的鱼眼摄像机，其特征在于，所述鱼眼镜头的中心线与每个所述红外灯的中心线具有一夹角。
  4. 如权利要求3所述的鱼眼摄像机，其特征在于，所述夹角的范围为40°至45°。
  5. 如权利要求2所述的鱼眼摄像机，其特征在于，进一步包括覆盖在所述多个红外灯上方的透红外灯罩。
  6. 如权利要求5所述的鱼眼摄像机，其特征在于，所述透红外灯罩为覆盖在所述圆锥体的锥面上的环形灯罩，所述鱼眼镜头从该透红外灯罩的中心伸出。
  7. 如权利要求5所述的鱼眼摄像机，其特征在于，所述透红外灯罩为黑色透红外灯罩。
PCT/CN2015/072512 2014-07-11 2015-02-09 一种具有红外灯的鱼眼摄像机 WO2016004761A1 (zh)

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