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WO2016206002A1 - Ensemble de lentilles catadioptriques et dispositif d'acquisition d'image panoramique - Google Patents

Ensemble de lentilles catadioptriques et dispositif d'acquisition d'image panoramique Download PDF

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Publication number
WO2016206002A1
WO2016206002A1 PCT/CN2015/082125 CN2015082125W WO2016206002A1 WO 2016206002 A1 WO2016206002 A1 WO 2016206002A1 CN 2015082125 W CN2015082125 W CN 2015082125W WO 2016206002 A1 WO2016206002 A1 WO 2016206002A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
photosensitive
group
disposed
reflecting surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/082125
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English (en)
Chinese (zh)
Inventor
胡笑平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bolymedia Holdings Co Ltd
Original Assignee
Bolymedia Holdings Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bolymedia Holdings Co Ltd filed Critical Bolymedia Holdings Co Ltd
Priority to PCT/CN2015/082125 priority Critical patent/WO2016206002A1/fr
Publication of WO2016206002A1 publication Critical patent/WO2016206002A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe

Definitions

  • the present invention relates to the field of image technology, and in particular, to a catadioptric lens group and a corresponding panoramic image capturing device.
  • a device that is capable of acquiring an image of an annular region around 360 degrees is generally referred to as a panoramic image capture device.
  • a panoramic image capture device A device that is capable of acquiring an image of an annular region around 360 degrees.
  • the existing panoramic image technologies include the following:
  • a fisheye lens is attached to the front end of the photosensitive device, and the super wide angle is used for panoramic imaging. Due to the large distortion of the fisheye lens, it is difficult to obtain a high quality image restoration effect.
  • the panoramic image is obtained by using a mirror. As shown in FIG. 1, the light from the shooting area AA is reflected by the rotationally symmetrical curved mirrors BB and CC, and then enters the photosensitive module DD for imaging.
  • This technique has less distortion, but requires discrete reflective elements, the mounting accuracy is not easy to control, and the amount of light actually entering the photosensitive module is small, making it difficult to obtain a clear image.
  • FIG. 2 includes a catadioptric lens group and a photosensitive module.
  • the catadioptric lens group is composed of three lens elements L01, and the light is incident from the frontmost refractive surface S02, and is reflected by the reflecting surface R03 to enter the photosensitive state.
  • the photosensitive module includes a photosensitive device C04 and a second lens group L05, and a line channel P06 of the photosensitive module is formed by drilling holes in the lens.
  • This new technology can reduce the size of the system and improve the sharpness of the image.
  • the mounting direction of the photosensitive module is opposite to that of the conventional image capturing device, that is, facing the captured image, if used for handheld Equipment will give users the trouble of framing. And the holes in the lens will also create gaps in the captured image.
  • a catadioptric lens assembly comprising one or more lens elements having a first reflecting surface, a second reflecting surface and at least one refractive surface for collecting incident light.
  • the first reflecting surface is disposed in the direction in which the light is incident on all of the refracting surfaces for concentrating the incident light and is vacant in the area around the optical axis.
  • the second reflecting surface is opposite to the first reflecting surface and disposed in a region around the optical axis such that the incident light is reflected by the first reflecting surface after passing through the at least one lens element, and then reflected by the second reflecting surface after passing through at least one lens element, and then After passing through at least one lens element or gap, it exits from the area around the optical axis.
  • a panoramic image capture device includes the above-described catadioptric lens group and a photosensitive module, and the photosensitive module is fixedly or detachably connected to the catadioptric lens group.
  • the photosensitive module includes a photosensitive device for sensing light concentrated by the catadioptric lens group.
  • the incident light is collected by combining refraction and double reflection, the light is concentrated once before the reflection, and the second convergence is performed after the first reflection, and It is also possible to perform a third convergence after the second reflection (in this case, the optical paths after the second reflecting surface are not all located in the gap), which not only can double the convergence effect, but also help to obtain a clear image.
  • the photosensitive module can be mounted facing the scene in a conventional manner, which also avoids the difficulty of drilling and threading in the lens.
  • 1 is a schematic diagram of an optical path of one of the existing panoramic image technologies
  • Figure 2 is a schematic diagram of a panoramic image capture device in a prior patent application
  • FIG. 3 is a schematic diagram of a panoramic image capturing device according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic diagram of a panoramic image capturing device according to Embodiment 2 of the present invention.
  • Figure 5 is a schematic diagram of a panoramic image capture device in accordance with Embodiment 3 of the present invention.
  • the invention relates to a catadioptric lens group and a panoramic image capturing device, wherein the panoramic image capturing device comprises a catadioptric lens group and a photosensitive module.
  • the panoramic image capturing device comprises a catadioptric lens group and a photosensitive module.
  • the catadioptric lens group can be fixedly or detachably connected to the photosensitive module. If the detachable connection is used, the catadioptric lens group can be regarded as a separate device.
  • the panoramic image capturing device according to the present invention may be a dual-function device, and the panoramic image may be acquired when the folding lens group is added.
  • the photosensitive module can also be used as a normal image.
  • the collection device is used.
  • the panoramic image capturing device can be realized at low cost by adding a folding reflection lens group to an existing image capturing device (for example, a camera, a video camera, a mobile phone camera, etc.).
  • An embodiment of the panoramic image capture device according to the present invention can refer to FIG. 3, including a catadioptric lens group 110 and a photosensitive module 120 having an optical axis of 101.
  • the catadioptric lens group has a simple structure and is composed of a lens element 111 having a back surface and a convex refractive surface 114 for condensing incident light, which is referred to as a lens element on the back surface and light (eg The other side of the incident surface is shown by the arrow in the figure.
  • the first reflecting surface 112 is provided on the back surface of the lens element 111, and can be formed, for example, by plating a reflective film on the back surface of the lens element. It is worth mentioning that in the prior art device that relies on the reflecting surface to collect the panoramic light, the ability to converge light mainly depends on the curved surface shape of the reflecting surface, and in the present invention, since the reflecting surface is combined with the refractive surface of the lens body, It mainly relies on the refractive surface for convergence. Due to the existence of the reflecting surface, the refractive surface of the lens body can be utilized multiple times, which not only has better effect, but also the reflecting surface can adopt various shapes which are easier to process, such as plane and circumferential symmetry. Convex or concave, etc.
  • the first reflecting surface is vacant in the area around the optical axis, so that the light can finally be emitted therefrom without interference.
  • the central portion of the back surface of the lens element 111 is partially hollowed out, thereby forming a vacant area of the first reflecting surface, which is referred to as a region around the optical axis.
  • the back surface may be flat, and the vacant area of the first reflecting surface may be formed in such a manner that the central portion is not coated and remains transparent.
  • the second reflecting surface 113 is opposed to the first reflecting surface, and is disposed in a central region of the convex refractive surface, and can be formed by, for example, plating or placing a mirror. Among them, the coating film may be first flattened and then coated, or directly coated.
  • the catadioptric lens set may have a varying configuration depending on the design of the optical path and performance requirements, for example, may have more than two refractive surfaces.
  • the first reflecting surface should be disposed in the direction in which the light is incident after all of the refractive surfaces for concentrating the incident light.
  • the catadioptric lens group may be composed of two or more lens elements, the first reflecting surface being disposed on the back side of the last lens element, the second reflecting surface being disposed opposite thereto, and the second reflecting surface The light path can then pass through the lens element or it can be completely hollowed out.
  • the incident light is reflected by the first reflecting surface after passing through the at least one lens element, and then reflected by the second reflecting surface after passing through at least one lens element, and then exits from the area around the optical axis through at least one lens element or gap, so that the light can be two One or three times (incident once, one or two reflections) pass through the lens element to enhance the convergence effect.
  • the light may pass through all of the lens elements three times, or it may only repeat through a portion of the lens unit.
  • the photosensitive module 120 includes a photosensitive device 121 and a PCB substrate 122 for fixing and providing a circuit for sensing light concentrated by the catadioptric lens group 110.
  • the photosensitive module further includes a second lens group 123 disposed in front of the photosensitive device, and the light is sensed by the photosensitive device after passing through the second lens group.
  • the addition of the second lens group on the one hand further enhances the concentrating ability, and on the other hand, expands the freedom of optical design.
  • the photosensitive module can also have a simple structure without the use of an additional lens set.
  • a part of the photosensitive module that is, the second lens group, is housed in the hollowed-back portion of the lens element 111 to achieve a more compact arrangement.
  • the photosensitive module may also be integrally disposed behind the catadioptric lens group, so that it is not necessary to provide a recess for accommodating in the lens of the catadioptric lens group.
  • the present embodiment further includes the following additional components.
  • one or more of the additional components may be selectively included according to the needs of the application, and details are not described herein.
  • the movable infrared filter 130 is fixed on the motor-driven rotating support 131 and movably disposed between the folding reflection lens group 110 and the photosensitive device 121.
  • the second embodiment is further disposed in the second lens group.
  • 123 is between the photosensor 121.
  • An image processor (not shown) for reducing a pie-shaped panoramic image captured by the photosensitive device into a cylindrical image.
  • a pie-shaped image captured by a photosensitive device can be reduced to a continuous cylindrical image by means of coordinate transformation and interpolation calculation.
  • a display for displaying images captured by the sensor, for example, displaying the original image captured by the sensor or displaying the image restored by the image processor (segmentable display).
  • the normal to the display can be perpendicular to the optical axis of the device or parallel to the optical axis of the device.
  • the display can be set separately from the image capture device, only via a data connection.
  • a storage unit (not shown) for storing images captured by the photosensitive device and other related data.
  • the communication unit (not shown) is configured to transmit the image processed by the image processor in a wireless or wired manner, for example, to a receiving end designated by the user.
  • the photosensitive device can be installed in the same manner as in the conventional video camera, and the difference is that the light from the image will be concentrated after three stages.
  • the catadioptric lens group is emitted to the photosensitive module.
  • FIG. 4 Another embodiment of the panoramic image capture device according to the present invention can be referred to FIG. 4, including a catadioptric lens set 210 and a photosensitive module 220 having an optical axis of 201.
  • the catadioptric lens group 210 is composed of two lens elements (ie, the front lens element and the succeeding lens element) which are sequentially placed in the direction in which the light is incident, the first reflection.
  • the face 212 is disposed on the back side of the rear lens element, and thus has three refractive faces 214, 215, 216.
  • the second reflecting surface 213 is disposed in a central region of the front surface (i.e., the refractive surface 214) of the preceding lens element. To facilitate the placement of the second reflecting surface, the central region may be flattened.
  • the photosensitive module 220 also includes a photosensitive device 221, a PCB substrate 222, and a second lens group 223.
  • the mobile infrared filter is omitted in this embodiment.
  • the central area of the rear lens element in the catadioptric lens group is completely hollowed out, and the photosensitive device of the photosensitive module and the second lens group are accommodated therein.
  • the light from the image passes through the preceding lens element three times, and only passes through the subsequent lens element twice.
  • the central region of the preceding lens element may also be completely hollowed out.
  • the area of each lens element in the catadioptric lens group around the optical axis may be all hollowed out, which will facilitate optical design and machining.
  • FIG. 5 Another embodiment of the panoramic image capture device according to the present invention can refer to FIG. 5, including a catadioptric lens set 310 and a photosensitive module 320 having an optical axis of 301.
  • the catadioptric lens group is composed of a lens element, the back surface of which is a first reflecting surface 312, the front surface thereof is a convex surface refracting surface 314, and the second reflecting surface 313 is disposed at a central area of the convex surface.
  • the photosensitive module 320 includes a photosensitive device 321, a PCB substrate 322, and a second lens group 323.
  • the second lens group adopts an autofocus lens group, including a stator 3231 and a mover 3232, and the lens group is disposed on the mover.
  • the drive motor used for the autofocus may be, for example, a polyhedral ultrasonic motor, a voice coil motor, or the like.
  • the quality of the image can be further improved by using an autofocus lens group.
  • the back surface of the catadioptric lens group is smooth, and no recess is provided.
  • the first reflecting surface is not coated in the central region and remains transparent, and the photosensitive module is integrally disposed behind the folding reflection lens group, which makes the production easier.
  • the panoramic image capturing device of the embodiment further includes an LCD display screen 340 disposed on the other side of the PCB substrate, the normal line of which is parallel to the optical axis of the photosensitive device, so as to display the captured image to the user.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Studio Devices (AREA)
  • Lenses (AREA)
  • Stereoscopic And Panoramic Photography (AREA)

Abstract

L'invention concerne un ensemble de lentilles catadioptriques (210) comprenant un ou deux éléments lentille ou plus, ayant une première surface de réflexion (212), une deuxième surface de réflexion (213) et au moins une surface de réfraction (214, 215, 216) pour faire converger la lumière incidente. La première surface de réflexion (212) est disposée après l'ensemble des surfaces de réfraction (214, 215, 216) dans une direction d'incidence de la lumière, et n'est pas présente dans une région entourant un axe optique (201). La deuxième surface de réflexion (213) est à l'opposé de la première surface de réflexion (212) et est disposée au niveau de la région entourant l'axe optique. L'invention concerne en outre un dispositif d'acquisition d'image panoramique comprenant l'ensemble de lentilles catadioptriques (210) et un module photosensible (220). Le module photosensible (220) peut être installé en face d'un champ photographique de manière normale.
PCT/CN2015/082125 2015-06-23 2015-06-23 Ensemble de lentilles catadioptriques et dispositif d'acquisition d'image panoramique Ceased WO2016206002A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/082125 WO2016206002A1 (fr) 2015-06-23 2015-06-23 Ensemble de lentilles catadioptriques et dispositif d'acquisition d'image panoramique

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Application Number Priority Date Filing Date Title
PCT/CN2015/082125 WO2016206002A1 (fr) 2015-06-23 2015-06-23 Ensemble de lentilles catadioptriques et dispositif d'acquisition d'image panoramique

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107256402A (zh) * 2017-07-24 2017-10-17 张岩 图像采集装置、电子证件识别装置及图像采集单元对准方法
TWI660629B (zh) * 2017-11-06 2019-05-21 香港商萬維科研有限公司 自我調整三維立體成像系統
CN110944105A (zh) * 2019-11-25 2020-03-31 焦江 一种具有长焦模式的摄像模组及电子设备
CN114222036A (zh) * 2021-11-16 2022-03-22 昆山丘钛微电子科技股份有限公司 光学组件

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WO1995002841A1 (fr) * 1993-07-16 1995-01-26 National Research Council Of Canada Lentille panoramique
US6175454B1 (en) * 1999-01-13 2001-01-16 Behere Corporation Panoramic imaging arrangement
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CN101573649A (zh) * 2006-12-19 2009-11-04 奥林巴斯株式会社 光学系统
CN101688969A (zh) * 2007-07-09 2010-03-31 奥林巴斯株式会社 光学元件、具有该光学元件的光学系统及应用该光学元件的内窥镜
CN102346358A (zh) * 2010-07-29 2012-02-08 罗技欧洲公司 相机中的优化的可移动红外滤光器
CN102495460A (zh) * 2011-12-13 2012-06-13 复旦大学 一种全景成像镜头
US20130057971A1 (en) * 2011-09-01 2013-03-07 Samsung Electronics Co., Ltd. Panoramic imaging lens and panoramic imaging system using the same
WO2013051744A1 (fr) * 2011-10-07 2013-04-11 아이티아이 주식회사 Module de lentille de caméra synchrone pour imagerie omnidirectionnelle utilisant une seule lentille
CN103969800A (zh) * 2014-03-26 2014-08-06 中国计量学院 一种长焦型全景环形成像镜头
CN204044421U (zh) * 2014-03-26 2014-12-24 中国计量学院 一种长焦型全景环形成像镜头

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Publication number Priority date Publication date Assignee Title
WO1995002841A1 (fr) * 1993-07-16 1995-01-26 National Research Council Of Canada Lentille panoramique
US6175454B1 (en) * 1999-01-13 2001-01-16 Behere Corporation Panoramic imaging arrangement
CN1421724A (zh) * 2001-11-29 2003-06-04 株式会社立山研开 全景摄影透镜
WO2004042428A2 (fr) * 2002-11-04 2004-05-21 O.D.F. Optronics Ltd. Imagerie omnidirectionnelle et assemblage d'eclairage
US20040252384A1 (en) * 2003-06-12 2004-12-16 Wallerstein Edward P. Panoramic imaging system
CN1558262A (zh) * 2004-01-12 2004-12-29 浙江大学 180°大视场环形全景凝视成像方法
CN101573649A (zh) * 2006-12-19 2009-11-04 奥林巴斯株式会社 光学系统
CN201041596Y (zh) * 2007-04-24 2008-03-26 浙江大学 一种多片式全景环视成像透镜
CN101038366A (zh) * 2007-04-24 2007-09-19 浙江大学 多片式全景环视成像透镜
CN101688969A (zh) * 2007-07-09 2010-03-31 奥林巴斯株式会社 光学元件、具有该光学元件的光学系统及应用该光学元件的内窥镜
CN102346358A (zh) * 2010-07-29 2012-02-08 罗技欧洲公司 相机中的优化的可移动红外滤光器
US20130057971A1 (en) * 2011-09-01 2013-03-07 Samsung Electronics Co., Ltd. Panoramic imaging lens and panoramic imaging system using the same
WO2013051744A1 (fr) * 2011-10-07 2013-04-11 아이티아이 주식회사 Module de lentille de caméra synchrone pour imagerie omnidirectionnelle utilisant une seule lentille
CN102495460A (zh) * 2011-12-13 2012-06-13 复旦大学 一种全景成像镜头
CN103969800A (zh) * 2014-03-26 2014-08-06 中国计量学院 一种长焦型全景环形成像镜头
CN204044421U (zh) * 2014-03-26 2014-12-24 中国计量学院 一种长焦型全景环形成像镜头

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107256402A (zh) * 2017-07-24 2017-10-17 张岩 图像采集装置、电子证件识别装置及图像采集单元对准方法
CN107256402B (zh) * 2017-07-24 2024-03-29 北京中安未来科技有限公司 图像采集装置、电子证件识别装置及图像采集单元对准方法
TWI660629B (zh) * 2017-11-06 2019-05-21 香港商萬維科研有限公司 自我調整三維立體成像系統
CN110944105A (zh) * 2019-11-25 2020-03-31 焦江 一种具有长焦模式的摄像模组及电子设备
CN114222036A (zh) * 2021-11-16 2022-03-22 昆山丘钛微电子科技股份有限公司 光学组件

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