WO2020076194A1 - Caméra d'un système de vision nocturne - Google Patents

Caméra d'un système de vision nocturne Download PDF

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Publication number
WO2020076194A1
WO2020076194A1 PCT/RU2019/050175 RU2019050175W WO2020076194A1 WO 2020076194 A1 WO2020076194 A1 WO 2020076194A1 RU 2019050175 W RU2019050175 W RU 2019050175W WO 2020076194 A1 WO2020076194 A1 WO 2020076194A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
night vision
lens
camera
vision system
Prior art date
Application number
PCT/RU2019/050175
Other languages
English (en)
Russian (ru)
Inventor
Максим Ярославич Кузьмин
Original Assignee
Максим Ярославич Кузьмин
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 Максим Ярославич Кузьмин filed Critical Максим Ярославич Кузьмин
Publication of WO2020076194A1 publication Critical patent/WO2020076194A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses

Definitions

  • the invention relates to the field of optical observation in low light conditions and can be used for dynamic observation in land, water and air transport.
  • a well-known mobile phone camera containing two lenses with inclined end surfaces and a photosensitive matrix, while one of the lenses contains a light-absorbing layer on the end surface [CN107635090, publication date: 01/26/2018, MIC: G02B 3/08, G03B 15/05 , H04M 1/02].
  • a well-known mobile phone camera module containing a housing inside which lenses and a photosensitive matrix are located, wherein the lateral surface of each lens contains a light-protective layer [W02008093516, publication date: 05/20/2010, MIC: G02B 7/02, H04N 5/225, H04N 5/335].
  • a disadvantage of the known technical solutions is the low quality of the image obtained when shooting video in low visibility conditions and at night even when using additional infrared illumination. This drawback is due to the fact that the photosensitive matrix used in the known technical solutions has a low sensitivity to light in the infrared range, and the camera module does not have the ability to switch to monochrome "night mode", which greatly limits the functionality of known devices.
  • a camera module was selected that was capable of shooting in the dark, containing a lens with lenses and a matrix that is photosensitive to light in the infrared range, while the lens at the point of contact with the end surface of the lens contains inserts of light-absorbing material [W02017090437A1, publication date : 06/01/2017, IPC: G02B 3/00, G02B 7/02, G03B 19/00].
  • the advantage of the prototype over the known technical solutions is the ability to identify the contours of the object under observation in low light conditions due to the fact that the camera module, made with the ability to shoot at night, has a matrix that is sensitive to light in the infrared range.
  • the prototype has drawbacks consisting in optical defects in the image obtained by the camera of the night vision system in low light conditions when the subject is illuminated with infrared light. This is due to multiple uncontrolled reflection of light passing through the lenses from dust particles that inevitably fall into the space between the end face. the surface of the lenses and the insert of the light-absorbing material, while the ingress of dust particles causes a gap between the light-absorbing material and the end surface of the lenses.
  • the formation of a gap leads to the fact that the light passing through the lenses does not fall on the surface of the reflective material and is reflected from microroughnesses on the end surface of the lenses, which inevitably form during their manufacture, machining and fitting to the seat in the lens. As a result of this, the infrared light is refracted and scattered in the optical circuit of the lens and distorted light gets on the highly sensitive matrix, causing noise when converting the image projected onto it. As a result, the resulting image has low contrast and sharpness and contains glare and illumination of the subject, which significantly degrades the operational characteristics of the night-vision camera.
  • the technical problem to which the invention is directed is to improve the operational characteristics of the camera of the night vision system.
  • the technical result to which the invention is directed is to reduce the risk of optical defects in the image obtained by the camera of the night vision system.
  • the invention consists in the following.
  • the camera of the night vision system contains a housing, inside of which there is a photosensitive sensor and a lens with lenses. Unlike the prototype, the end surface of the lenses contains a coating of light-absorbing material.
  • the lens provides the ability to form an optical image from the reflection of light from objects.
  • the type of lens can be collecting and scattering, and the design of the lens can be biconvex or flat-convex, as well as biconcave or flat-concave.
  • the lens can be made of an optically transparent material, for example, optical glass, crystal or optical plastics.
  • the coating of the light-absorbing material makes it possible to reduce the reflectivity of microroughnesses having cracks and complex irregular cavities on the end surface of the lens, and eliminates the occurrence of a gap between the light-absorbing layer and the lens.
  • the coating from the light-absorbing material should have a high level of absorption of electromagnetic radiation in the near, middle and far infrared ranges, which reduces the risk of optical defects in the image received by the camera of the night vision system in low light conditions.
  • the coating may have black color and can be represented by a sprayed light-absorbing nanopowder, paste or varnish based on light-absorbing nanopowders.
  • the structural layer of light-absorbing material can be represented by alcohol-containing black ink.
  • the lens is a frame for lenses and provides the possibility of forming an optical circuit from them.
  • the lens may have a fixed or variable focal length, which can be adjusted automatically and / or manually.
  • the lens may have a collapsible design, which makes it possible to clean and replace lenses and reduce the risk of optical defects in the image received by the camera of the night vision system.
  • the lens may contain a removable infrared filter, which provides the ability to receive images by the camera of the night vision system in the daytime.
  • the photosensitive matrix is an analog or digital-to-analog integrated circuit containing LEDs that are highly sensitive to light in the PC range and enables the conversion of an optical image projected onto it by an optical lens circuit into an analog electrical signal.
  • the housing can be of any shape and size, providing the ability to place the components of the camera system of night vision inside it.
  • the housing may have a collapsible design, which allows cleaning or replacing components of the camera of the night vision system and reducing the risk of optical defects in the image obtained by the camera of the night vision system.
  • the housing can be sealed, which reduces the risk of dust and moisture entering inside it and further reduces the risk of optical defects in the image received by the camera of the night vision system.
  • the housing may contain fastening means, presented in the form of holes, brackets, hinges with suction cups, etc., providing the possibility of installing the camera of the night vision system in a vehicle, for example, in a car, motorcycle, boat, etc.
  • the invention is characterized by a previously unknown significant feature consisting in the fact that the end surface of the lens contains a coating of light-absorbing material, which reduces the intensity of light reflected microroughnesses in the end surface of the lens, thereby reducing the risk of refracted and scattered light getting onto the photosensitive matrix of the night vision camera, reducing the risk of noise when converting an image projected onto the matrix, thereby increasing contrast and sharpness and reducing
  • the invention can be made from known materials using known means, which indicates the compliance of the invention with the patentability criterion of "industrial applicability".
  • Figure 1 The camera module of the prototype, the refraction of light reflected from microroughnesses on the end surface of the lens.
  • Figure 2 Camera night vision system in a sealed enclosure.
  • Fig.Z Optical diagram of the camera system of night vision, one lens contains
  • Figure 4 Optical diagram of the camera system of night vision, all lenses contain a coating of alcohol-containing black ink.
  • Figure 5 Lens coated with a reflective material.
  • the camera of the night vision system contains a housing 1, inside which is located
  • lens 2 with lenses 3 and a photosensitive matrix 4, while the end surface of the lens 3 contains a coating of light-absorbing material 5.
  • the invention works as follows.
  • the camera is installed in a vehicle (not shown in the figures) to monitor the road situation in low light conditions.
  • VOs on the road are illuminated by infrared light from a source (not shown in the figures) of light that is reflected from objects, passes through the lenses 3 of lens 2 and falls on the photosensitive matrix 4.
  • a source not shown in the figures
  • the light-absorbing material 5 due to the light-absorbing material 5, a significant decrease in the intensity of light reflected from irregularities located on the end surface of the lens 3, and on
  • the photosensitive matrix 4 only receives light reflected from objects on the road, which allows you to increase the contrast and sharpness of the display of the object of observation, and the image has no glare and flare. This ensures the achievement of the technical result, which consists in reducing the risk of optical defects in the image, thereby improving the operational characteristics of the camera of the night vision system.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Studio Devices (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

L'invention concerne le domaine de l'observation optique dans des conditions d'éclairage insuffisant et peut s'utiliser pour l'observation dynamique pour les transports sur l'eau ou aérien. Le résultat technique visé par l'invention consiste à réduire le risque d'apparition de défauts optiques sur l'image obtenue par une caméra d'un système de vision nocturne. L'invention consiste en ce que la caméra d'un système de vision nocturne comprend un corps à l'intérieur duquel est disposée une matrice sensible à la lumière et un objectif avec des lentilles et qui se distingue en ce que la surface d'extrémité des lentilles comprend un revêtement en matériau absorbant la lumière.
PCT/RU2019/050175 2018-10-08 2019-10-04 Caméra d'un système de vision nocturne WO2020076194A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2018135305 2018-10-08
RU2018135305A RU2694553C1 (ru) 2018-10-08 2018-10-08 Камера системы ночного видения

Publications (1)

Publication Number Publication Date
WO2020076194A1 true WO2020076194A1 (fr) 2020-04-16

Family

ID=67309285

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2019/050175 WO2020076194A1 (fr) 2018-10-08 2019-10-04 Caméra d'un système de vision nocturne

Country Status (2)

Country Link
RU (1) RU2694553C1 (fr)
WO (1) WO2020076194A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117375154A (zh) * 2023-10-10 2024-01-09 上海筱珈数据科技有限公司 一种充电桩、剪草机器人充电系统以及自动识别充电方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206820795U (zh) * 2017-07-05 2017-12-29 广东欧珀移动通信有限公司 手机及其摄像头
CN107635090A (zh) * 2017-09-26 2018-01-26 广东欧珀移动通信有限公司 闪光灯镜片、摄像组件和终端设备
US20180149778A1 (en) * 2014-12-19 2018-05-31 Samsung Electro-Mechanics Co., Ltd. Lens assembly and camera module including the same
EP3383019A1 (fr) * 2015-11-24 2018-10-03 Sony Semiconductor Solutions Corporation Module de caméra et dispositif électronique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW576606U (en) * 2003-06-13 2004-02-11 Hon Hai Prec Ind Co Ltd Digital imaging module

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180149778A1 (en) * 2014-12-19 2018-05-31 Samsung Electro-Mechanics Co., Ltd. Lens assembly and camera module including the same
EP3383019A1 (fr) * 2015-11-24 2018-10-03 Sony Semiconductor Solutions Corporation Module de caméra et dispositif électronique
CN206820795U (zh) * 2017-07-05 2017-12-29 广东欧珀移动通信有限公司 手机及其摄像头
CN107635090A (zh) * 2017-09-26 2018-01-26 广东欧珀移动通信有限公司 闪光灯镜片、摄像组件和终端设备

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117375154A (zh) * 2023-10-10 2024-01-09 上海筱珈数据科技有限公司 一种充电桩、剪草机器人充电系统以及自动识别充电方法

Also Published As

Publication number Publication date
RU2694553C1 (ru) 2019-07-16

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