WO2021016758A1 - 一种图像识读设备 - Google Patents

一种图像识读设备 Download PDF

Info

Publication number
WO2021016758A1
WO2021016758A1 PCT/CN2019/098000 CN2019098000W WO2021016758A1 WO 2021016758 A1 WO2021016758 A1 WO 2021016758A1 CN 2019098000 W CN2019098000 W CN 2019098000W WO 2021016758 A1 WO2021016758 A1 WO 2021016758A1
Authority
WO
WIPO (PCT)
Prior art keywords
image recognition
light
light source
filter
optical axis
Prior art date
Application number
PCT/CN2019/098000
Other languages
English (en)
French (fr)
Inventor
易仰卿
许文焕
应棋伟
宋红军
Original Assignee
深圳市民德电子科技股份有限公司
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 深圳市民德电子科技股份有限公司 filed Critical 深圳市民德电子科技股份有限公司
Priority to PCT/CN2019/098000 priority Critical patent/WO2021016758A1/zh
Publication of WO2021016758A1 publication Critical patent/WO2021016758A1/zh

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up

Definitions

  • the invention relates to the field of image recognition, and more specifically, to an image recognition device.
  • the light source assembly 30, the aiming unit is an important component of the image recognition engine.
  • the pattern projected on the surface of the object is used to guide the user to aim, so that the image to be read can be placed within the field of view of the image recognition engine;
  • the reading element 20 and the light source assembly 30 are placed side by side with the bracket 10, and a light source assembly 30 is placed on each side of the reading element 20, so that the center of the reading element is between the centers of the two light source assemblies, as shown in Figure 2 ;
  • This solution requires two sets of light source components, and the distance between the center of the aiming pattern of the light source assembly and the reading center of the reading element is large, causing the reading center and the aiming center to be inconsistent, affecting the accuracy of reading, and its structure is complicated , The cost increases, and it is not directly aligned, which is easy to mislead users.
  • the reading element 20 and the light source assembly 30 are placed side by side with the bracket 10. Due to the limited structure, the distance between the center of the aiming pattern and the center of the reading element 20 is relatively large, about 6mm, which results in the reading element The center is inconsistent with the aiming center, which affects the accuracy of reading, and the closer the reading distance, the greater the deviation that affects the reading; as shown in Figure 1.
  • the reading element 20 and the light source assembly 30 are placed side by side with the bracket 10, and a light source assembly 30 is placed on each side of the reading element 20, so that the center of the reading element is between the centers of the two light source assemblies, as shown in Figure 2 ;
  • This solution requires two sets of light source components, and the distance between the center of the aiming pattern of the light source assembly and the reading center of the reading element is large, causing the reading center and the aiming center to be inconsistent, affecting the accuracy of reading, and its structure is complicated , The cost increases, and it is not directly aligned, which is easy to mislead users.
  • the technical problem to be solved by the present invention is to provide an improved image recognition device.
  • the technical solution adopted by the present invention to solve its technical problem is: constructing an image recognition device, including a bracket, an image recognition element installed on the bracket; and a light source assembly installed on the bracket, and an installation A filter assembly arranged on the support and opposite to the light source assembly;
  • the image recognition element forms an image recognition area in its recognition direction
  • the filter assembly includes a filter surface that intersects the optical axis of the image recognition element and forms a second set included angle; the optical axis of the light source assembly intersects the filter surface , Forming the third set angle;
  • the light source assembly emits light toward the filter surface and is reflected by the filter surface to form reflected light; the optical axis of the reflected light extends toward the image recognition area and is close to the image recognition element The optical axis setting.
  • the intersection point of the optical axis of the light source assembly and the filter surface coincides with the intersection point of the optical axis of the image recognition element and the filter surface.
  • the second set angle and the third set angle are complementary angles.
  • the optical axis of the reflected light coincides with the optical axis of the image recognition element.
  • the light source assembly includes a light emitting surface
  • the filter surface and the light exit surface form a first set angle.
  • the filter assembly includes a supporting member arranged in parallel with the light exit surface, and a filter arranged on the supporting member and forming a fourth set angle with the supporting member;
  • the filter surface is arranged on the filter.
  • the image recognition element includes a lens barrel body, a sensor chip installed in the lens barrel body, and an optical lens installed in the lens barrel body in a sensing direction of the sensor chip;
  • the filter is obliquely arranged on the end surface of the lens barrel body and forms a fifth set angle with the end surface.
  • the first set angle is 45 degrees
  • And/or the fifth set angle is 45 degrees.
  • the bracket includes a bottom wall and a side wall;
  • the image recognition element is installed on the bottom wall
  • the light source assembly is installed on the side wall, and includes a hollow cylinder, a light source installed in the cylinder, and a condenser installed in the cylinder and located in the light emitting direction of the light source. Light unit.
  • the condensing unit includes a convex lens or a lens group.
  • the image recognition device implementing the present invention has the following beneficial effects: the image recognition device forms a second set angle by intersecting the optical axis of the light source assembly with the filter surface of the filter assembly disposed opposite to it, and passes The light source assembly emits light toward the filter surface, and is reflected by the filter surface to form reflected light whose optical axis extends toward the high image recognition area and is close to the optical axis of the image recognition element, thereby making the aiming center closer
  • the reading center of the image reading area can improve the accuracy of reading.
  • the image reading device has the advantages of simple structure, low production cost and high reading accuracy.
  • FIG. 1 is a schematic structural diagram of a first embodiment of a conventional image recognition device
  • FIG. 2 is a schematic structural diagram of a second embodiment of an existing image recognition device
  • FIG. 3 is a schematic diagram of the structure of an image recognition device according to some embodiments of the present invention.
  • FIG. 4 is a schematic diagram of the reflection state of the image recognition device shown in FIG. 3.
  • FIGS 3 and 4 show some preferred embodiments of the image recognition device of the present invention.
  • the image reading device can be used for reading bar codes and two-dimensional codes.
  • the image reading device has the advantages of simple structure, low production cost, and high reading accuracy.
  • the image recognition device includes a support 10, an image recognition element 20, a light source assembly 30, and a filter assembly 40; the image recognition element 20, the light source assembly 30, and the filter assembly 40 are all Installed on the bracket 10, the image recognition element 20 can read and decode the image, and it can form an image recognition area 50 in its reading direction.
  • the light source assembly 30 can be used to emit light for the image recognition element 20 to illuminate, which is convenient for the image recognition element 20 to capture images.
  • the filter assembly 40 can reflect the light emitted by the light source assembly 30 to the image recognition area 50 so as to illuminate the image recognition element 20.
  • the image recognition device may further include a housing (not shown); the bracket 10 may be installed in the housing (not shown), the image recognition element 20, the light source assembly 30, And the filter assembly 40 can be accommodated in the casing (not shown).
  • the bracket 10 may include a bottom wall 11 and a side wall 12; the bottom wall 11 and the side wall 12 may form an integral structure, and the bottom wall 11 may be used for mounting the image recognition element 20 .
  • the side wall 12 can be perpendicular to the bottom wall 11 and can be used for the light source assembly 30 to be installed.
  • the image recognition element 20 may be arranged on the bottom wall 11 along a direction perpendicular to the bottom wall 11, and it may include a lens barrel body 21, a sensor chip 23, and an optical lens 22.
  • the lens barrel body 21 can be a hollow structure, which can be arranged on the bottom wall 11 along a direction perpendicular to the bottom wall 11, and can be used for mounting the sensor chip 23 and the optical lens 22.
  • the optical lens is mounted on the upper part of the barrel body 21 and is located in the sensing direction of the sensing chip 23, which can be used to scan an image.
  • the sensor chip 23 can be installed in the lens barrel body 21, and can be attached to the bottom wall 11 of the bracket 10, which is arranged opposite to the optical lens 22, and can be used to sense, identify, and interpret in the optical lens 22 The formed image.
  • the optical axis AC of the image recognition element 20 is the image recognition center 51 where the intersection of the image recognition area 50 is the image recognition area, that is, the optical axis AC of the image recognition element 20 is the The central axis of the image recognition area 50.
  • the light source assembly 30 can be installed on the side wall 12 along a direction perpendicular to the side wall 12, and the light emitting direction thereof is arranged perpendicular to the side wall 12.
  • the light source assembly 30 may include a cylinder 31, a light-emitting source 32 and a light-concentrating unit 33; the cylinder 31 can be used for installing the light-emitting source 32 and the light-concentrating unit 33.
  • the light-emitting source 32 can emit light when it is energized to illuminate the image reading element 30.
  • the light concentrating unit 33 can condense the light emitted by the light source 32.
  • the barrel 31 can be a hollow structure, and can be installed on the side wall 12 along a direction perpendicular to the side wall 12, and can be used for installing the light-emitting source 32 and the light-concentrating unit 33.
  • the cylinder 31 may include a fixing part and a mounting part; the fixing part can be mounted on the side wall 12, which can be attached or welded to the side wall 12, and its inner diameter and outer diameter are both larger than the inner diameter of the mounting part And the outer diameter, the mounting part can be arranged on the fixing part, which can be used for mounting the concentrating unit 33.
  • the light-emitting source 32 can be installed in the cylinder 31. Specifically, it can be located in the fixed part. It can be a light source of any wavelength. Generally, a monochromatic light source that is convenient for human observation can be used, such as a wavelength of 650 mm. Red light. Understandably, in some embodiments of the gas, it may also use a combination of multiple monochromatic light sources of specific wavelengths.
  • the light source 32 can be a laser emitter or an LED lamp bead, which can be mounted on the side wall 12 in the form of a patch.
  • the condensing unit 33 can be installed in the barrel 31, and it can be located in the light emitting direction of the light-emitting source 32, specifically, it can be installed in the installation part, it can be a convex lens, it can be a transparent optical
  • the material is manufactured and has certain optical characteristics, which can make the light emitted by the light-emitting source 32 pass and focus or image to form a cursor with a certain characteristic shape, thereby making the light emitted by the light-emitting source 32 brighter. It is understandable that in some other embodiments, the condensing unit 33 may not be limited to a convex lens, and it may be a lens group.
  • a light-emitting surface 331 is provided in the light-emitting direction of the light concentrating unit 30, and the light-emitting surface 331 may be located at the outlet end of the barrel 31 and arranged parallel to the end surface of the barrel 31.
  • the light emitting surface 331 can be used for the light concentrating unit 30 to emit light.
  • the emitting assembly 40 may include a support 41 and a filter 42; the support 41 is disposed on the support 10 and may be disposed in parallel with the light emitting surface 331.
  • the filter 42 can be installed on the support 41, and it can be arranged opposite to the light source assembly 30, and arranged obliquely on the image recognition element 20 to reflect the light emitted by the light source assembly 30, and Reflect it to the image recognition area 50.
  • the support 41 can be a support plate, which can be installed on the bottom wall 11 in a direction perpendicular to the bottom wall 11, and can be fixed to the bottom wall 11 by welding. It is understood that, in some embodiments of gas, it It can be detachably connected to the bottom wall 11 by providing a connecting structure.
  • the support 41 can be arranged on the side of the image recognition element 20 opposite to the light source assembly 20, and its height can be greater than the height of the image recognition element 20, so as to cooperate with the image recognition element 20 to filter the light.
  • the piece 41 is inclined.
  • the filter 41 can be arranged obliquely on the end surface of the lens barrel body 21, one end of which can be connected to the support 41, and the other end is connected to the lens barrel body 21, which can be connected to the support 41 and the lens barrel body
  • the end face of 21 forms a fourth included angle ⁇ 4 and a fifth set included angle ⁇ 5 ; in some embodiments, the fourth included angle ⁇ 4 and the fifth set included angle ⁇ 5 may both be 45 degrees, which is understandably In some embodiments of the gas, it may not be limited to 45 degrees.
  • the reflection wavelength of the filter 40 matches the wavelength of the light-emitting source 30, so that the wavelength of the light-emitting source 30 can be reflected without affecting the transmission and imaging of the imaging light required by the image reading element 20.
  • the filter 42 is provided with a filter surface 421; the filter surface 421 may form a first set angle ⁇ 1 with the light exit surface 331, and the first set angle ⁇ 1 may be The angle of 45 degrees, it is understandable that in some other embodiments, the first set angle ⁇ 1 may not be limited to the angle of 45 degrees.
  • the optical axis of the reflected light formed by the light emitted by the light source assembly 30 after being reflected by the filter surface 421 extends toward the image reading area 50 and is close to the optical axis AC of the image reading element 20, thereby improving the accuracy of reading .
  • the filter surface 421 may intersect the optical axis AC of the image recognition circle 20 to form a second set angle ⁇ 2 , and the intersection point may be located at the center of the filter surface 421, It is understandable that, in some other embodiments, it may not be limited to being located at the center of the filter surface 421.
  • the second set angle ⁇ 2 is an acute angle, specifically, it may be an angle of 45 degrees.
  • the optical axis BA of the light source assembly 30 may intersect the filter surface 421 and form a third set angle ⁇ 3 , and the third set angle ⁇ 3 is the incidence of the light source assembly 30 angle.
  • the third set included angle ⁇ 3 is an acute angle, and it may form a complementary angle with the second set included angle ⁇ 2 , specifically, it may be an angle of 45 degrees.
  • the intersection point of the optical axis BA of the light source assembly 30 and the filter surface 421 coincides with the intersection point of the optical axis AC of the image recognition element 20 and the filter surface 421, and the second set included angle ⁇ 2 is complementary Angle, it can make the optical axis of the reflected light formed by the light emitted by the light source assembly 30 reflected by the filter surface 421 extend toward the image recognition area 50 and be approximately equal to the optical axis AC of the image recognition element 20 The coincidence can improve the accuracy of reading. Compared with the prior art (as shown in FIG. 1 and FIG. 2 ), the optical axis BD of the reflected light is closer to the optical axis AD of the image reading element 20, which facilitates accurate reading.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Artificial Intelligence (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Image Input (AREA)

Abstract

一种图像识读设备，包括支架（10）、安装在支架（10）上的图像识读元件（20）；还包括安装在支架（10）上的光源组件（30）、以及安装在支架（10）上且与光源组件（30）相对设置的滤光组件（40）；图像识读元件（20）在其识读方向上形成图像识读区域（50）；滤光组件（40）包括滤光面（421），滤光面（421）与图像识读元件（20）的光轴（AC）相交，并形成第二设定夹角（α 2）；光源组件（30）的光轴（BA）与滤光面（421）相交，形成第三设定夹角（α 3）；光源组件（30）朝滤光面（421）发光，并由滤光面（421）反射形成反射光；反射光的光轴朝图像识读区域（50）延伸，并靠近图像识读元件（20）的光轴（AD）设置。该图像识读设备具有结构简单、生产成本低、识读准确性高的优点。

Description

一种图像识读设备 技术领域
本发明涉及图像识读领域，更具体地说，涉及一种图像识读设备。
 背景技术
光源组件30，即瞄准单元，其作为图像识读引擎的重要元件，其投射于物体表面的图案，用于引导用户瞄准，便于将待识读图像置于图像识读引擎的视场范围内；现有的图像识读设备：其一、识读元件20与光源组件30并排放置支架10，由于结构受限，瞄准图案中心与识读元件20中心距离较大，大约需要6mm，造成识读元件中心与瞄准中心不一致，影响识读的准确性，而且识读距离越近影响识读的偏差就会越大；如图1所示。其二、识读元件20与光源组件30并排放置支架10，在识读元件20的两边各放一个光源组件30，，使识读元件中心在两个光源组件中心之间，如图2所示；此方案需要两套的光源组件，且其光源组件瞄准图案的中心与识读元件的识读中心距离较大，造成识读中心与瞄准中心不一致，影响识读的准确性，并且其结构复杂，成本增加，而且不是直接对准，容易误导使用者。
 技术问题
现有的图像识读设备：其一、识读元件20与光源组件30并排放置支架10，由于结构受限，瞄准图案中心与识读元件20中心距离较大，大约需要6mm，造成识读元件中心与瞄准中心不一致，影响识读的准确性，而且识读距离越近影响识读的偏差就会越大；如图1所示。其二、识读元件20与光源组件30并排放置支架10，在识读元件20的两边各放一个光源组件30，，使识读元件中心在两个光源组件中心之间，如图2所示；此方案需要两套的光源组件，且其光源组件瞄准图案的中心与识读元件的识读中心距离较大，造成识读中心与瞄准中心不一致，影响识读的准确性，并且其结构复杂，成本增加，而且不是直接对准，容易误导使用者。
 技术解决方案
本发明要解决的技术问题在于，提供一种改进的图像识读设备。
本发明解决其技术问题所采用的技术方案是：构造一种图像识读设备，包括支架、安装在所述支架上的图像识读元件；还包括安装在所述支架上的光源组件、以及安装在所述支架上且与所述光源组件相对设置的滤光组件；
所述图像识读元件在其识读方向上形成图像识读区域；
所述滤光组件包括滤光面，所述滤光面与所述图像识读元件的光轴相交，并形成第二设定夹角；所述光源组件的光轴与所述滤光面相交，形成第三设定夹角；
所述光源组件的朝所述滤光面发光，并由所述滤光面反射形成反射光；所述反射光的光轴朝所述图像识读区域延伸，并靠近与所述图像识读元件的光轴设置。
优选地，所述光源组件的光轴与所述滤光面的相交点与所述图像识读元件的光轴和所述滤光面的相交点重合。
优选地，所述第二设定夹角与第三设定夹角为互补角。
优选地，所述反射光的光轴与所述图像识读元件的光轴重合。
优选地，所述光源组件包括出光面；
所述滤光面与所述出光面形成第一设定夹角。
优选地，所述滤光组件包括与所述出光面平行设置的支撑件、设置在所述支撑件上且与所述支撑件形成第四设定夹角的滤光片；
所述滤光面设置在所述滤光片上。
优选地，所述图像识读元件包括镜筒本体、安装在镜筒本体中的感应芯片、安装在所述镜筒本体中为位于所述感应芯片的感应方向的光学镜头；
所述滤光片倾斜设置在所述镜筒本体端面上且与该端面形成第五设定夹角。
优选地，所述第一设定夹角为45度角；
和/或所述第二设定夹角为45度角；
和/或所述第三设定夹角为45度角；
和/或所述第四设定夹角为45度角；
和/或所述第五设定夹角为45度角。
优选地，所述支架包括底壁以及侧壁；
所述图像识读元件安装在所述底壁上；
所述光源组件安装在所述侧壁上，其包括中空的筒体、安装在所述筒体中的发光源、以及安装在所述筒体中且位于所述发光源的出光方向上的聚光单元。
优选地，所述聚光单元包括凸透镜或者透镜组。
 有益效果
实施本发明的图像识读设备，具有以下有益效果：该图像识读设备通过将该光源组件的光轴与与之相对设置的滤光组件的滤光面相交形成第二设定夹角并通过该光源组件朝该滤光面发光，并由该滤光面反射形成反射光光轴朝高图像识图区域延伸并靠近图像识读元件的光轴设置的反射光，进而可以使得瞄准中心更靠近图像识读区域的识读中心，从而可以提高识读的准确性。该图像识读设备具有结构简单、生产成本低、识读准确性高的优点。
 附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1是现有的图像识读设备第一实施例的结构示意图；
图2是现有的图像识读设备第二实施例的结构示意图；
图3是本发明一些实施例图像识读设备的结构示意图；
图4是图3所示图像识读设备反射状态示意图。
 本发明的最佳实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图详细说明本发明的具体实施方式。
图3及图4示出了本发明图像识读设备的一些优选实施例。该图像识读设备可用于条码、二维码的识读，该图像识读设备具有结构简单、生产成本低、识读准确性高的优点。
如图3及图4所示，该图像识读设备包括支架10、图像识读元件20、光源组件30、滤光组件40；该图像识读元件20、光源组件30、以及滤光组件40均安装在该支架10上，该图像识读元件20可以对图像进行识读、解码，其可在其识读方向上形成图像识读区域50。该光源组件30可用于发出光线供该图像识读元件20照明，便于图像识读元件20取像。该滤光组件40可将该光源组件30发出的光反射至图像识读区域50，以便于给该图像识读元件20照明。在其他一些实施例中，该图像识读设备还可包括壳体（未图示）；该支架10可安装在该壳体（未图示）中，该图像识读元件20、光源组件30、以及滤光组件40均可收容于该壳体（未图示）中。
进一步地，在一些实施例中，该支架10可包括底壁11以及侧壁12；该底壁11可与该侧壁12形成一体结构，该底壁11可用于供该图像识读元件20安装。该侧壁12可与该底壁11垂直设置，其可用于供该光源组件30安装。
进一步地，在一些实施例中，该图像识读元件20可沿垂直于该底壁11的方向设置在该底壁11上，其可包括镜筒本体21、感应芯片23、光学镜头22。该镜筒本体21可为中空结构，其可沿垂直于该底壁11的方向设置在该底壁11上，其可用于供该感应芯片23和该光学镜头22安装。该光学镜头安装在该镜筒本体21的上部，且位于该感应芯片23的感应方向，其可用于对图像进行扫描。该感应芯片23可安装在该镜筒本体21中，且可贴设在该支架10的底壁11上，其与该光学镜头22相对设置，其可用于感应、识别、解读在该光学镜头22形成的图像。在一些实施例中，该图像识读元件20的光轴AC为该图像识读区域50相交点为图像识读区域的图像识读中心51，即该图像识读元件20的光轴AC为该图像识读区域50的中心轴线。
进一步地，在一些实施例中，该光源组件30可沿垂直于该侧壁12的方向安装在该侧壁12上，且其出光方向垂直于该侧壁12设置。该光源组件30可包括筒体31、发光源32以及聚光单元33；该筒体31可用于供该发光源32以及该聚光单元33安装。该发光源32可以在通电状态下发光，以给该图像识读元件30照明。该聚光单元33可汇聚该发光源32发出的光。
该筒体31可为中空结构，其可沿垂直于该侧壁12的方向安装在该侧壁12上，其可用于供该发光源32以及该聚光单元33安装。该筒体31可以包括固定部、以及安装部；该固定部可安装在该侧壁12上，其可贴设或者焊接在该侧壁12上，其内径以及外径均大于该安装部的内径和外径，该安装部可设置在该固定部上，其可用于供该聚光单元33安装。
该发光源32可安装在该筒体31中，具体地，其可位于该固定部中，其可以为任一波长的光源，一般可采用便于人眼观察的单色光源，例如波长为650mm的红光。可以理解地，在气体一些实施例中，其也可以采用特定波长的多种单色光组合光源。该发光源32可以为激光发射器、或者LED灯珠，其可通过贴片的形式贴装于该侧壁12上。
该聚光单元33可安装在该筒体31中，且其可位于该发光源32的出光方向上，具体地，其可安装在该安装部中，其可为凸透镜，其可采用透明的光学材料在制成，具有一定的光学特性，能够使得该发光源32发出的光通过并聚焦或者成像形成某种特点形状的光标，从而可以使得该发光源32发出的光更加明亮。可以理解地，在其他一些实施例中，该聚光单元33可以不限于凸透镜，其可以为透镜组。在一些实施例中，该聚光单元30的出光方向上设有出光面331，该出光面331可以位于该筒体31出口端，并与该筒体31的端面平行设置。该出光面331可供该聚光单元30出光。
进一步地，在一些实施例中，该发射组件40可包括支撑件41、以及滤光片42；该支撑件41设置在该支架10上，且可与该出光面331平行设置。该滤光片42可安装在该支撑件41上，且其可与该光源组件30相对设置，并倾斜设置在该图像识读元件20上，以用于反射该光源组件30发出的光，并将其反射至图像识读区域50。
该支撑件41可以为支撑板，其可沿垂直于该底壁11的方向安装在该底壁11上，其可与底壁11通过焊接固定，可以理解地，在气体一些实施例中，其可以通过设置连接结构与该底壁11可拆卸连接。该支撑件41可设置在该图像识别元件20与该光源组件20相背设置的一侧，且其高度可大于该图像识别元件20的高度，以与该图像识别元件20配合，将该滤光片41倾斜设置。
该滤光片41可倾斜设置在该镜筒本体21端面上，其一端可与该支撑件41连接，另一端与该镜筒本体21连接，其可分别与该支撑件41和该镜筒本体21的端面形成第四夹角α 4和第五设定夹角α 5；在一些实施例中，第四夹角α 4和第五设定夹角α 5均可以为45度，可以理解地，在气体一些实施例中，其可不限于45度。
该滤光片40的反射波长与该发光源30的波长相匹配，从而可以对该发光源30的波长进行反射，同时又不影响图像识读元件20所需要的成像光透过成像。在一些实施例中，该滤光片42上设有滤光面421；该滤光面421可与该出光面331形成第一设定夹角α 1，第一设定夹角α 1可以为45度角，可以理解地，在其他一些实施例中，该第一设定夹角α 1可以不限于45度角。光源组件30发出的光经由该滤光面421反射后形成的反射光的光轴朝该图像识读区域50延伸并靠近该图像识读元件20的光轴AC，从而可提高识读的准确性。
在一些实施例中，该滤光面421可与该图像识读圆件20的光轴AC相交，并形成第二设定夹角α 2，其相交点可以位于该滤光面421的中心，可以理解地，在其他一些实施例中，其也可以不限于位于该滤光面421的中心，通过形成该第二设定夹角α 2，可以使得该光源组件30发出的光能够发至该滤光面421上，并可由该滤光面421反射至该图像识读区域50。在一些实施例中，该第二设定夹角α 2为锐角，具体地，其可以为45度角。
在一些实施例中，该光源组件30的光轴BA可与该滤光面421相交，并形成第三设定夹角α 3，该第三设定夹角α 3为该光源组件30的入射角。在一些实施例中，该第三设定夹角α 3为锐角，且其可以与该第二设定夹角α 2形成互补角，具体地，其可以为45度角。该光源组件30的光轴BA与该滤光面421的相交点与该图像识读元件20的光轴AC与该滤光面421的相交点重合，而第二设定夹角α 2形成互补角，则其可以将使得该光源组件30发出的光经由该滤光面421反射后形成的反射光的光轴朝该图像识读区域50延伸并与该图像识读元件20的光轴AC大致重合，从而可提高识读的准确性。相比于现有的（如图1及图2所示），该反射光的光轴BD更接近于该图像识读元件20的光轴AD，从而有利于准确识读。
可以理解的，以上实施例仅表达了本发明的优选实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制；应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，可以对上述技术特点进行自由组合，还可以做出若干变形和改进，这些都属于本发明的保护范围；因此，凡跟本发明权利要求范围所做的等同变换与修饰，均应属于本发明权利要求的涵盖范围。

Claims (10)

  1. 一种图像识读设备，包括支架（10）、安装在所述支架（10）上的图像识读元件（20）；其特征在于，还包括安装在所述支架（10）上的光源组件（30）、以及安装在所述支架（10）上且与所述光源组件（30）相对设置的滤光组件（40）；
    所述图像识读元件（20）在其识读方向上形成图像识读区域（50）；
    所述滤光组件（40）包括滤光面（421），所述滤光面（421）与所述图像识读元件（20）的光轴相交，并形成第二设定夹角（α 2）；所述光源组件（30）的光轴与所述滤光面（421）相交，形成第三设定夹角（α 3）；
    所述光源组件（30）的朝所述滤光面（421）发光，并由所述滤光面（421）反射形成反射光；所述反射光的光轴朝所述图像识读区域（50）延伸，并靠近与所述图像识读元件（20）的光轴设置。
  2. 根据权利要求1所述的图像识读设备，其特征在于，所述光源组件（30）的光轴与所述滤光面（421）的相交点与所述图像识读元件（20）的光轴和所述滤光面（421）的相交点重合。
  3. 根据权利要求2所述的图像识读设备，其特征在于，所述第二设定夹角（α 2）与第三设定夹角（α 3）为互补角。
  4. 根据权利要求1至3任一项所述的图像识读设备，其特征在于，所述反射光的光轴与所述图像识读元件（20）的光轴重合。
  5. 根据权利要求1至3任一项所述的图像识读设备，其特征在于，所述光源组件（30）包括出光面（331）；
    所述滤光面（421）与所述出光面（331）形成第一设定夹角（α 1）。
  6. 根据权利要求5所述的图像识读设备，其特征在于，所述滤光组件（40）包括与所述出光面（331）平行设置的支撑件（41）、设置在所述支撑件（41）上且与所述支撑件（41）形成第四设定夹角（α 4）的滤光片（42）；
    所述滤光面（421）设置在所述滤光片（42）上。
  7. 根据权利要求6所述的图像识读设备，其特征在于，所述图像识读元件（20）包括镜筒本体（21）、安装在镜筒本体（21）中的感应芯片（23）、安装在所述镜筒本体（21）中为位于所述感应芯片（23）的感应方向的光学镜头（22）；
    所述滤光片（42）倾斜设置在所述镜筒本体（21）端面上且与该端面形成第五设定夹角（α 5）。
  8. 根据权利要求7所述的图像识读设备，其特征在于，所述第一设定夹角（α 1）为45度角；
    和/或所述第二设定夹角（α 2）为45度角；
    和/或所述第三设定夹角（α 3）为45度角；
    和/或所述第四设定夹角（α 4）为45度角；
    和/或所述第五设定夹角（α 5）为45度角。
  9. 根据权利要求1至3任一项所述的图像识读设备，其特征在于，所述支架（10）包括底壁（11）以及侧壁（12）；
    所述图像识读元件（20）安装在所述底壁（11）上；
    所述光源组件（30）安装在所述侧壁（12）上，其包括中空的筒体（31）、安装在所述筒体（31）中的发光源（32）、以及安装在所述筒体（31）中且位于所述发光源（32）的出光方向上的聚光单元（33）。
  10. 根据权利要求9所述的图像识读设备，其特征在于，所述聚光单元（33）包括凸透镜或者透镜组。
PCT/CN2019/098000 2019-07-26 2019-07-26 一种图像识读设备 WO2021016758A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/098000 WO2021016758A1 (zh) 2019-07-26 2019-07-26 一种图像识读设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/098000 WO2021016758A1 (zh) 2019-07-26 2019-07-26 一种图像识读设备

Publications (1)

Publication Number Publication Date
WO2021016758A1 true WO2021016758A1 (zh) 2021-02-04

Family

ID=74229021

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/098000 WO2021016758A1 (zh) 2019-07-26 2019-07-26 一种图像识读设备

Country Status (1)

Country Link
WO (1) WO2021016758A1 (zh)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1073542A (zh) * 1991-12-14 1993-06-23 欧林巴斯光学工业股份有限公司 商品标记的处理方法及其装置
US6708888B2 (en) * 2001-11-29 2004-03-23 Kenneth Liou Reflection cowl for a bar-code scanner
JP2011113210A (ja) * 2009-11-25 2011-06-09 Nippon Telegr & Teleph Corp <Ntt> 印刷情報読取装置
CN105022979A (zh) * 2015-07-27 2015-11-04 深圳市民德电子科技股份有限公司 成像系统与补光系统光轴呈夹角设置的图像识读设备
CN208589035U (zh) * 2018-09-10 2019-03-08 四川新健康成生物股份有限公司 一种试剂卡条码读取装置
CN109495667A (zh) * 2018-12-18 2019-03-19 敦南科技（无锡）有限公司 同轴光照射型接触式影像传感器模块
CN208693255U (zh) * 2017-09-12 2019-04-05 北京明达同泽科技有限公司 一种视网膜图像采集系统

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1073542A (zh) * 1991-12-14 1993-06-23 欧林巴斯光学工业股份有限公司 商品标记的处理方法及其装置
US6708888B2 (en) * 2001-11-29 2004-03-23 Kenneth Liou Reflection cowl for a bar-code scanner
JP2011113210A (ja) * 2009-11-25 2011-06-09 Nippon Telegr & Teleph Corp <Ntt> 印刷情報読取装置
CN105022979A (zh) * 2015-07-27 2015-11-04 深圳市民德电子科技股份有限公司 成像系统与补光系统光轴呈夹角设置的图像识读设备
CN208693255U (zh) * 2017-09-12 2019-04-05 北京明达同泽科技有限公司 一种视网膜图像采集系统
CN208589035U (zh) * 2018-09-10 2019-03-08 四川新健康成生物股份有限公司 一种试剂卡条码读取装置
CN109495667A (zh) * 2018-12-18 2019-03-19 敦南科技（无锡）有限公司 同轴光照射型接触式影像传感器模块

Similar Documents

Publication Publication Date Title
US8743315B2 (en) Surface light source device, liquid crystal display device, and lens
JP5121771B2 (ja) 光源ユニット、及び画像表示装置
TWI382349B (zh) Optical light guide module for optical fingerprint identification system
CN100437452C (zh) 可微型化光学鼠标装置
JP4576491B1 (ja) 発光装置
CN110084090A (zh) 一种光学式屏下指纹识别模组
JP2004361914A5 (zh)
JP4741017B2 (ja) 光源ユニット、及び画像表示装置
JP3472750B2 (ja) 表面検査装置
TW200817722A (en) Optical element, light concentrating assembly, illumination unit and assembly, system for optical inspection of an object, and method for producing an optical element
JP2008041295A (ja) 照明装置、及び、これを用いた表示装置
JP2006251397A (ja) 照明装置および撮影装置
CN210166790U (zh) 一种图像识读设备
CN210324215U (zh) 一种图像识读设备
JP4768160B2 (ja) 光出力装置、ポインターおよび画像投影装置
JP3187902U (ja) 照明装置
WO2021016758A1 (zh) 一种图像识读设备
JP2009151262A (ja) 光学レンズと光学レンズを使用したバックライトモジュール
CN214948814U (zh) 一种机场滑行道灯
WO2021016759A1 (zh) 一种图像识读设备
JP5935072B2 (ja) 導光体部材及びそれを用いた火災感知器
JP6749084B2 (ja) Ｌｅｄ照明装置
CN110701578B (zh) 灯具、发光模块与其组合式透镜
TWI391021B (zh) 發光二極體封裝體及投影裝置
CN218823963U (zh) 外侧壁检测装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19939796

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19939796

Country of ref document: EP

Kind code of ref document: A1