WO2017197930A1 - 一种接触式图像传感器及图像扫描装置 - Google Patents

一种接触式图像传感器及图像扫描装置 Download PDF

Info

Publication number
WO2017197930A1
WO2017197930A1 PCT/CN2017/073235 CN2017073235W WO2017197930A1 WO 2017197930 A1 WO2017197930 A1 WO 2017197930A1 CN 2017073235 W CN2017073235 W CN 2017073235W WO 2017197930 A1 WO2017197930 A1 WO 2017197930A1
Authority
WO
WIPO (PCT)
Prior art keywords
image sensor
contact image
scanning device
contact
lens
Prior art date
Application number
PCT/CN2017/073235
Other languages
English (en)
French (fr)
Inventor
张文波
王虎岩
Original Assignee
威海华菱光电股份有限公司
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 威海华菱光电股份有限公司 filed Critical 威海华菱光电股份有限公司
Priority to US16/099,442 priority Critical patent/US10911629B2/en
Priority to JP2018535356A priority patent/JP6664496B2/ja
Priority to EP17798499.4A priority patent/EP3461114B1/en
Publication of WO2017197930A1 publication Critical patent/WO2017197930A1/zh

Links

Images

Classifications

    • 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
    • H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
    • H04N1/031—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/10—Scanning systems
    • G02B26/101—Scanning systems with both horizontal and vertical deflecting means, e.g. raster or XY scanners
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
    • 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
    • H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
    • H04N1/031—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors
    • H04N1/0314—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors using photodetectors and illumination means mounted in the same plane on a common support or substrate
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/0402—Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards
    • H04N1/042—Details of the method used
    • H04N1/0443—Varying the scanning velocity or position
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/0402—Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards
    • H04N1/042—Details of the method used
    • H04N1/0449—Details of the method used using different sets of scanning elements, e.g. for different formats
    • H04N1/0452—Details of the method used using different sets of scanning elements, e.g. for different formats mounted on the same support or substrate
    • 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
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
    • 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
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
    • H04N1/3877—Image rotation
    • 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
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
    • H04N1/393—Enlarging or reducing
    • H04N1/3935—Enlarging or reducing with modification of image resolution, i.e. determining the values of picture elements at new relative positions

Definitions

  • the present invention relates to the field of contact image sensors, and more particularly to a contact image sensor and an image scanning device that utilize a linear magnifying glass to improve scanning resolution.
  • scanning resolution is an important indicator of scanning devices. If the resolution is too low, the scanned image may not meet the needs of subsequent processing.
  • the scanning accuracy of the existing scanning device mainly depends on the accuracy of the optical component.
  • the resolution of the contact image sensor (CIS) is determined by the resolution of the photosensitive chip (IC), and the 600 DPI IC is taken as an example.
  • the size of the photosensitive window is about 40 ⁇ m, that is, the size of one pixel scanned is at least 40 ⁇ m.
  • the present invention proposes a contact image sensor and an image scanning device to improve the resolution of scanning.
  • an aspect of the present invention provides a contact image sensor including a light source, a lens, a light receiving portion that collects light from a receiving lens, a sensor substrate on which a photosensitive integrated circuit arranged in a line is mounted, a housing lens, and a sensor substrate a frame, a light transmissive plate disposed on an upper portion of the frame and configured to carry an original, the contact image sensor further comprising a linear magnifying lens disposed between the light transmissive plate and the lens, the linear magnifying glass having The ability to linearly magnify an object in a single direction.
  • the linear magnifier employs a linear Fresnel magnifier.
  • An advantage of this aspect of the present invention is that the above-described contact image sensor can achieve resolution improvement in one direction.
  • Another aspect of the present invention provides an image scanning apparatus including the above-described contact type image sensor, the image scanning apparatus including two of the contact type image sensors, the first contact type image sensor being parallel to the X direction of the image scanning apparatus Positioning, the second contact image sensor is placed in parallel with the Y direction of the image scanning device, the first contact image sensor is pulled by the first traction mechanism, and the second contact image sensor is pulled by the second traction mechanism, the image scanning
  • the apparatus further includes a control system, a post-processing system, and a document table, wherein the control system is for controlling normal operation of the first contact image sensor and the second contact image sensor, and for controlling the first traction mechanism and the second traction The action of the mechanism; the post-processing system is configured to process signals transmitted by the first contact image sensor and the second contact image sensor, the document table being used for placing an original.
  • An advantage of this aspect of the present invention is that the above-described image scanning apparatus having the contact type image sensor according to the present invention can realize high-resolution scanning.
  • the present invention also proposes an image scanning device comprising the above contact image sensor, the image scanning device comprising one of the contact image sensors, the contact image sensor being placed in parallel with the X direction of the image scanning device, and Trapped by a traction mechanism, the image scanning device further includes a rotating device, a control system, a post-processing system, and a document table, wherein the rotating device is configured to perform 90° rotation of the contact image sensor;
  • the contact image sensor is controlled to operate normally, and the action for controlling the traction mechanism is used;
  • the post-processing system is for processing a signal transmitted from the contact image sensor for placing the original.
  • An advantage of this aspect of the present invention is that the above-described image scanning apparatus having the contact type image sensor according to the present invention can realize high-resolution scanning.
  • a contact image sensor comprising: a frame; a light transmissive plate disposed at an upper portion of the frame; a lens, the frame housing the lens; a photosensitive member disposed under the lens; contacting
  • the image sensor further includes a linear magnifying lens disposed between the light transmissive plate and the lens, and the linear magnifying glass has a characteristic of linearly amplifying the object in a single direction of the object.
  • the photosensitive component comprises: a photosensitive portion for receiving light concentrated by the lens; a sensor substrate, the frame accommodating the sensor substrate, and the sensor substrate for mounting the photosensitive integrated circuit arranged in a line.
  • linear magnifying glass employs a linear Fresnel magnifying glass.
  • an image scanning apparatus comprising: a contact image sensor, the contact image sensor being the above-described contact image sensor; and a traction mechanism for driving the contact image sensor to move a control system for controlling the actions of the traction mechanism and the contact image sensor, respectively.
  • the image scanning device further includes: a post-processing system for processing signals transmitted by the contact image sensor.
  • the image scanning device further includes: a document table for placing the document.
  • the contact image sensor includes a first contact image sensor and a second contact image sensor, the first contact image sensors are placed in parallel along the first direction, and the second contact image sensor is placed in parallel along the second direction,
  • the first direction and the second direction have an angle
  • the traction mechanism includes a first traction mechanism for driving the first contact image sensor to move, and a second traction mechanism for driving the second contact image The sensor moves.
  • the image scanning device includes a contact image sensor, and the image scanning device further includes a rotating device for rotating the contact image sensor.
  • Figure 1 shows a cross-sectional view of a prior art contact image sensor.
  • Fig. 2a shows a cross-sectional view of a contact image sensor according to the present invention.
  • Figure 2b shows a top view of a contact image sensor in accordance with the present invention.
  • Fig. 3 is a schematic view showing the principle of amplification of the linear Fresnel magnifier according to the present invention.
  • FIG. 4 is a schematic diagram showing the principle of improving the resolution of the contact image sensor according to the present invention.
  • Fig. 5 is a view showing the configuration of an image scanning apparatus shown in Embodiment 1.
  • Fig. 6 is a view showing the configuration of an image scanning apparatus shown in Embodiment 2.
  • Reference numerals 1, frame; 2, light source; 3, sensor substrate; 4, photosensitive portion; 5, lens; 6, light-transmitting plate; 7, original; 8, linear Fresnel magnifier; 11, pixel; 21; first traction mechanism; 22, second traction mechanism; 23, control system; 24, post-processing system; 25, manuscript table; 26, rotating device; u, object distance; v, image distance; X1 First contact image sensor; Y1, second contact image sensor.
  • a contact image sensor including a frame, a light-transmitting plate, a lens, a photosensitive member, and a linear magnifying glass, the light-transmitting plate being disposed at an upper portion of the frame, the frame accommodating the lens, and the photosensitive member are provided Set under the lens, a linear magnifying glass is disposed between the light transmissive plate and the lens, and the linear magnifying glass has a characteristic of linearly amplifying the object in a single direction of the object.
  • the photosensitive assembly includes a photosensitive portion for receiving light concentrated by the lens, a frame for accommodating the sensor substrate, and a sensor substrate for mounting the photosensitive integrated circuit arranged in a line.
  • linear magnifying glass employs a linear Fresnel magnifying glass.
  • an image scanning apparatus including a contact image sensor, a traction mechanism and a control system, the contact image sensor being the above-described contact image sensor, and a traction mechanism for driving contact
  • the image sensor moves, and the control system is used to control the actions of the traction mechanism and the contact image sensor, respectively.
  • the image scanning device further includes a post-processing system for processing signals transmitted by the contact image sensor.
  • the image scanning device further includes an original table for placing the original.
  • the contact image sensor includes a first contact image sensor and a second contact image sensor, the first contact image sensors are placed in parallel along the first direction, and the second contact image sensor is placed in parallel along the second direction, the first The direction has an angle with the second direction, the traction mechanism includes a first traction mechanism for driving movement of the first contact image sensor, and a second traction mechanism for driving the second contact image sensor mobile.
  • the first direction is the X direction and the second direction is the Y direction.
  • the image scanning device includes a contact image sensor, and the image scanning device further includes a rotating device for rotating the contact image sensor.
  • the contact image sensor of the prior art includes a light source 2, a lens 5, a photosensitive portion 4 (ie, a photosensitive integrated circuit IC) that collects light from the receiving lens 5, and a photosensitive integrated circuit IC that is arranged in a line.
  • the contact image sensor according to the present invention includes a light source 2, a lens 5, a photosensitive portion 4 (that is, a photosensitive integrated circuit IC) that collects light from the receiving lens 5, and a photosensitive integrated circuit IC that is arranged in a line.
  • the structure and working principle of the above components are the same as those in the prior art, and the contact image sensor of the present invention further includes a linear Fresnel magnifier 8 which is disposed in the Between the light-transmitting plate 6 and the receiving lens 5.
  • the linear Fresnel magnifier 8 is a lens that can linearly amplify an object in a single direction, and the magnification of the existing linear Fresnel magnifier 8 can be about 5 times.
  • Fig. 3 is a schematic view showing the principle of amplification of the linear Fresnel magnifier according to the present invention.
  • the pixel point 11 is a pixel point having a length a in both the X direction and the Y direction, and the magnification of the linear Fresnel magnifier 8 is N times, according to the linear Fresnel magnifier 8 Principle, we can know that the length 12 of the image 12 magnified by the linear Fresnel magnifier 8 remains unchanged in the X direction, and the length in the Y direction becomes N times, that is, the pixel
  • the image 12 formed by the point 11 magnified by the linear Fresnel magnifier 8 has a length a in the X direction and a length Na in the Y direction.
  • the light emitted by the light source 2 is irradiated onto the original 7, and the light reflected by the original 7 first enters the linear Fresnel magnifier 8, and is magnified N times in the Y direction by the linear Fresnel magnifier 8 and then enters the lens 5 and is collected.
  • the photosensitive portion 4 On the photosensitive portion 4.
  • Other subsequent processing is basically the same as the prior art, and will not be described here.
  • FIG. 4 is a schematic diagram showing the principle of improving the resolution of the contact image sensor according to the present invention.
  • a linear Fresnel magnifier 8 is placed over the lens 5 of the contact image sensor, the distance from the linear Fresnel magnifier 8 to the pixel point 11 being the object distance u, the linear Fresnel magnifier 8 to the image 12 The distance is the image distance v, and the position of the linear Fresnel magnifier 8 is appropriately adjusted so that the image 12 enlarged by the linear Fresnel magnifier 8 is located at the focus position of the lens 5, so that the image 12 is concentrated by the lens 5 to the photosensitive portion. 4 on.
  • the lens 5 can only collect the image 12 of length a at a time.
  • the image scanning device having the above novel contact image sensor can achieve an increase in resolution in both directions of X ⁇ Y, that is, can improve the resolution of the entire scanned image, which will be described below in conjunction with specific embodiments.
  • Fig. 5 is a view showing the configuration of an image scanning apparatus shown in Embodiment 1.
  • the image scanning device includes two novel contact image sensors according to the present invention, namely a first contact image sensor X1 and a second contact image sensor Y1.
  • the first contact image sensor X1 is placed in parallel with the X direction of the image scanning device
  • the second contact image sensor Y1 is placed in parallel with the Y direction of the image scanning device
  • the first contact image sensor X1 is pulled by the first traction mechanism 21
  • the second contact image sensor Y1 is pulled by a second traction mechanism 22, which further includes a control system 23, a post-processing system 24, and a document table 25.
  • the control system 23 is mainly used to control the normal operation of the first contact image sensor X1 and the second contact image sensor Y1, and to control the actions of the first traction mechanism 21 and the second traction mechanism 22.
  • the post-processing system 24 is configured to perform subsequent processing on signals transmitted by the first contact image sensor X1 and the second contact image sensor Y1.
  • the operation principle of the image scanning device is as follows: First, the object to be scanned (original 7) is placed on the original table 25, and the light emitted from the light source 2 is irradiated onto the original 7 through the original table 25, and the light reflected by the original 7 is reflected. After entering the linear Fresnel magnifier 8 through the original table 25, it is enlarged and enters the lens 5, and is collected by the lens 5 onto the photosensitive portion 4, and these light numbers are converted into electrical signals and output to the post-processing system 24 for subsequent processing.
  • the photosensitive portion 4 collects N rows of pixels, and therefore, the scanning resolution is improved by N times in the Y direction as compared with the conventional image scanning device. After the scan is complete, you can get a set of data in the Y direction. Similarly, by pulling the second contact image sensor Y1 by the second traction mechanism 22 and scanning along the X direction, a set of data in the X direction can also be obtained. After the post-processing system 24, the two sets of data are combined into a complete image, and the entire image with an N-fold resolution is obtained, and a high-resolution scan is realized.
  • Fig. 6 is a view showing the configuration of an image scanning apparatus shown in Embodiment 2.
  • the image scanning device employs a novel contact image sensor of the present invention, such as the first contact image sensor X1, and a rotating device 26 is added.
  • the working principle is as follows: the first traction mechanism 21, under the control of the control system 23, pulls the first contact image sensor X1 in the Y direction by a step of a/N, thereby obtaining a set of data in the Y direction.
  • the first contact image sensor X1 After the first contact image sensor X1 completes scanning in the Y direction, the first contact image sensor X1 is rotated by 90 degrees, parallel to the Y direction, and the first traction mechanism 21 is controlled by the control system 23 under the action of the rotating device 26. By pulling the first contact image sensor X1 and scanning along the X direction, a set of data in the X direction can also be obtained. As in the first embodiment, after the subsequent processing of the post processing system 24, the whole frame can be improved. N-resolution images for high-resolution scanning.
  • the contact type image sensor according to the present invention can achieve resolution improvement in one direction; an image scanning apparatus having the contact type image sensor according to the present invention can realize high resolution scanning.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Facsimile Heads (AREA)
  • Image Input (AREA)

Abstract

本发明提出一种接触式图像传感器，包括光源、透镜、接收透镜所汇聚光的感光部、搭载排列成直线的光敏集成电路的传感器基板、容纳透镜和传感器基板的框架、设置在框架上部且用于搭载原稿的透光板，所述接触式图像传感器还包括一线性放大镜，所述线性放大镜设置于所述透光板和透镜之间，所述线性放大镜具有在单一方向上对物体进行线性放大的特性。本发明所涉及的接触式图像传感器可以实现单方向上的分辨率提高。

Description

一种接触式图像传感器及图像扫描装置 技术领域
本发明涉及接触式图像传感器领域，尤其涉及一种利用线性放大镜提高扫描分辨率的接触式图像传感器及图像扫描装置。
背景技术
随着电脑化办公的普及，扫描装置的应用越来越广泛，我们可以利用扫描装置将图片、文件等进行扫描，然后输入电脑进行后期的编辑或储存。扫描分辨率是扫描装置的一个重要指标。如果分辨率太低，扫描的图像可能无法满足后续处理的需求。
然而，现有扫描装置的扫描精度主要取决于光学元器件的精度，例如接触式图像传感器(CIS)的分辨率是由其感光芯片(IC)的分辨率决定的，以600DPI的IC为例，其感光窗口的尺寸约为40μm左右，也就是说，其扫描的一个像素的尺寸最小为40μm。要想提高扫描分辨率，我们可以利用提高感光芯片的分辨率的办法来实现，而感光芯片的分辨率越高，其成本越高，而且感光芯片的分辨率也不可能无限制的提高。
为了提高扫描装置的扫描分辨率，现有技术中已经公开了一些方法，例如，在被扫描物体与扫描模块之间放置一放大镜，利用扫描模块扫描被整体放大的图像，从而增加扫描分辨率。但是，这一方法的不足在于，整个扫描装置的体积变大。举例说明：假如放大镜的放大倍数是5，那么，要扫描100mm长的物体，就需要最小500mm的像平面和最小500mm长的扫描模块。这不仅增大扫描装置的体积，也会大大增加成本。
发明内容
为了解决现有技术中存在的问题，本发明提出了一种接触式图像传感器及图像扫描装置，以便提高扫描的分辨率。
为了实现上述目的，本发明的一方面提出了一种接触式图像传感器，包括光源、透镜、接收透镜所汇聚光的感光部、搭载排列成直线的光敏集成电路的传感器基板、容纳透镜和传感器基板的框架、设置在框架上部且用于搭载原稿的透光板，所述接触式图像传感器还包括一线性放大镜，所述线性放大镜设置于所述透光板和透镜之间，所述线性放大镜具有在单一方向上对物体进行线性放大的特性。
优选的是，所述线性放大镜采用线性菲涅尔放大镜。
本发明的该方案的有益效果在于上述接触式图像传感器可以实现单方向上的分辨率提高。
本发明的另一方面提出了一种包含上述接触式图像传感器的图像扫描装置，所述图像扫描装置包括两个所述接触式图像传感器，第一接触式图像传感器与图像扫描装置的X方向平行放置，第二接触式图像传感器与图像扫描装置的Y方向平行放置，第一接触式图像传感器由第一牵引机构所牵引，第二接触式图像传感器由第二牵引机构所牵引，所述图像扫描装置还包括控制系统、后处理系统以及原稿台，其中所述控制系统用于控制第一接触式图像传感器和第二接触式图像传感器的正常工作，以及用于控制第一牵引机构和第二牵引机构的动作；所述后处理系统用于对第一接触式图像传感器以及第二接触式图像传感器传送来的信号进行处理，所述原稿台用于放置原稿。
本发明的该方案的有益效果在于上述具有本发明所涉及的接触式图像传感器的图像扫描装置能够实现高分辨率扫描。
本发明还提出了一种包含上述接触式图像传感器的图像扫描装置，所述图像扫描装置包括一个所述接触式图像传感器，所述接触式图像传感器与图像扫描装置的X方向平行放置，并由牵引机构所牵引，所述图像扫描装置还包括旋转装置、控制系统、后处理系统以及原稿台，其中所述旋转装置用于对所述接触式图像传感器进行90°旋转；所述控制系统用于控制接触式图像传感器正常工作，以及用于控制牵引机构的动作；所述后处理系统用于对接触式图像传感器传送来的信号进行处理，所述原稿台用于放置原稿。
本发明的该方案的有益效果在于上述具有本发明所涉及的接触式图像传感器的图像扫描装置能够实现高分辨率扫描。
根据本发明的另一方面，提供了一种接触式图像传感器，接触式图像传感器包括：框架；透光板，设置在框架的上部；透镜，框架容纳透镜；感光组件，设置在透镜下方；接触式图像传感器还包括：线性放大镜，设置在透光板和透镜之间，线性放大镜具有在物体的单一方向上对物体进行线性放大的特性。
进一步地，感光组件包括：感光部，感光部用于接收透镜汇聚的光线；传感器基板，框架容纳传感器基板，传感器基板用于搭载排列成直线的光敏集成电路。
进一步地，线性放大镜采用线性菲涅尔放大镜。
根据本发明的又一方面，提供了一种图像扫描装置，图像扫描装置包括：接触式图像传感器，接触式图像传感器为上述提供的接触式图像传感器；牵引机构，用于驱动接触式图像传感器移动；控制系统，用于分别控制牵引机构和接触式图像传感器的动作。
进一步地，图像扫描装置还包括：后处理系统，用于对接触式图像传感器传送来的信号进行处理。
进一步地，图像扫描装置还包括：原稿台，原稿台用于放置原稿。
进一步地，接触式图像传感器包括第一接触式图像传感器和第二接触式图像传感器，第一接触式图像传感器沿第一方向平行放置，第二接触式图像传感器沿第二方向平行放置，第 一方向和第二方向具有夹角，牵引机构包括第一牵引机构和第二牵引机构，第一牵引机构用于驱动第一接触式图像传感器移动，第二牵引机构用于驱动第二接触式图像传感器移动。
进一步地，图像扫描装置包括一个接触式图像传感器，图像扫描装置还包括旋转装置，旋转装置用于对接触式图像传感器进行旋转。
附图说明
图1示出了现有技术中的接触式图像传感器的断面图。
图2a示出了本发明所涉及的接触式图像传感器的断面图。
图2b示出了本发明所涉及的接触式图像传感器的俯视图。
图3示出了本发明所涉及的线性菲涅尔放大镜的放大原理示意图。
图4示出了本发明所涉及的接触式图像传感器提高分辨率的原理示意图。
图5示出了实施例1所示的图像扫描装置的结构示意图。
图6示出了实施例2所示的图像扫描装置的结构示意图。
附图标记：1、框架；2、光源；3、传感器基板；4、感光部；5、透镜；6、透光板；7、原稿；8、线性菲涅尔放大镜；11、像素点；12、图像；21、第一牵引机构；22、第二牵引机构；23、控制系统；24、后处理系统；25、原稿台；26、旋转装置；u、物距；v、像距；X1、第一接触式图像传感器；Y1、第二接触式图像传感器。
具体实施方式
根据本发明的一个方面，提供了一种接触式图像传感器，接触式图像传感器包括框架、透光板、透镜、感光组件以及线性放大镜，透光板设置在框架的上部，框架容纳透镜，感光组件设置在透镜下方，线性放大镜设置在透光板和透镜之间，线性放大镜具有在物体的单一方向上对物体进行线性放大的特性。
进一步地，感光组件包括感光部和传感器基板，感光部用于接收透镜汇聚的光线，框架容纳传感器基板，传感器基板用于搭载排列成直线的光敏集成电路。
进一步地，线性放大镜采用线性菲涅尔放大镜。
根据本发明的又一方面，提供了一种图像扫描装置，图像扫描装置包括接触式图像传感器、牵引机构和控制系统，接触式图像传感器为上述提供的接触式图像传感器，牵引机构用于驱动接触式图像传感器移动，控制系统用于分别控制牵引机构和接触式图像传感器的动作。
进一步地，图像扫描装置还包括后处理系统，后处理系统用于对接触式图像传感器传送来的信号进行处理。
进一步地，图像扫描装置还包括原稿台，原稿台用于放置原稿。
进一步地，接触式图像传感器包括第一接触式图像传感器和第二接触式图像传感器，第一接触式图像传感器沿第一方向平行放置，第二接触式图像传感器沿第二方向平行放置，第一方向和第二方向具有夹角，牵引机构包括第一牵引机构和第二牵引机构，第一牵引机构用于驱动第一接触式图像传感器移动，第二牵引机构用于驱动第二接触式图像传感器移动。具体地，作为本发明第一个具体实施例，如图3所示，第一方向为X方向，第二方向为Y方向。
进一步地，图像扫描装置包括一个接触式图像传感器，图像扫描装置还包括旋转装置，旋转装置用于对接触式图像传感器进行旋转。
下面结合附图对本发明的具体实施方式作进一步的说明。
如图1所示，现有技术中的接触式图像传感器包括光源2、透镜5、接收透镜5所汇聚光的感光部4(即光敏集成电路IC)、搭载排列成直线的光敏集成电路IC的传感器基板3、容纳透镜5和传感器基板3的框架1、设置在框架1上部且用于搭载原稿7的透光板6。
本发明所涉及的接触式图像传感器的断面图如图2a所示，其俯视图如图2b所示。由图可以看出，本发明所涉及的接触式图像传感器包括光源2、透镜5、接收透镜5所汇聚光的感光部4(即光敏集成电路IC)、搭载排列成直线的光敏集成电路IC的传感器基板3、容纳透镜5和传感器基板3的框架1、设置在框架1上部且用于搭载原稿7的透光板6。以上各组成部分的结构及工作原理与现有技术相同，在此不做赘述，本发明所涉及的接触式图像传感器还包括线性菲涅尔放大镜8，所述线性菲涅尔放大镜8设置于所述透光板6和接收透镜5之间。
所述线性菲涅尔放大镜8是一种可以在单一方向上对物体进行线性放大的透镜，现有线性菲涅尔放大镜8的放大倍数可以达到5倍左右。图3示出了本发明所涉及的线性菲涅尔放大镜的放大原理示意图。以一个像素点11为例，像素点11是一个在X方向和Y方向上的长度均为a的像素点，线性菲涅尔放大镜8的放大倍数为N倍，根据线性菲涅尔放大镜8的原理，我们可以知道，经线性菲涅尔放大镜8放大后的图像12，其在X方向上的长度a保持不变，而在Y方向上的长度会变成原来的N倍，也就是说像素点11经线性菲涅尔放大镜8放大后形成的图像12，其在X方向上的长度为a，而在Y方向上的长度为Na。这样，光源2发出的光照射到原稿7上，经过原稿7反射回来的光线首先进入线性菲涅尔放大镜8，经线性菲涅尔放大镜8在Y方向上放大N倍之后进入透镜5并汇集到感光部4上。其它的后续处理与现有技术基本相同，此不赘述。
图4示出了本发明所涉及的接触式图像传感器提高分辨率的原理示意图。将线性菲涅尔放大镜8放在接触式图像传感器的透镜5的上方，所述线性菲涅尔放大镜8到像素点11的距离为物距u，所述线性菲涅尔放大镜8到图像12的距离为像距v，适当调整线性菲涅尔放大镜8的位置，使经线性菲涅尔放大镜8放大后的图像12位于透镜5的焦点位置处，这样图像12就会被透镜5汇聚到感光部4上。当然，所述透镜5每次只能汇集长度为a的图像12，当原稿7沿Y方向每次移动a/N的距离，移动N次后，一个长度为a的像素点11，经线性菲涅 尔放大镜8放大后，在Y方向上就可以被分成N份扫描，因此，在Y方向上的分辨率可以提高N倍。因此利用上述新型接触式图像传感器可以实现单方向上的分辨率提高。
具有上述新型接触式图像传感器的图像扫描装置可以实现X\Y两个方向上的分辨率提高，也就是说能提高整个扫描图像的分辨率，下面结合具体实施例加以说明。
实施例1
图5示出了实施例1所示的图像扫描装置的结构示意图。该图像扫描装置与现有图像扫描装置的主要区别在于：该图像扫描装置包括两个本发明所涉及的新型接触式图像传感器，即第一接触式图像传感器X1以及第二接触式图像传感器Y1。第一接触式图像传感器X1与图像扫描装置的X方向平行放置，第二接触式图像传感器Y1与图像扫描装置的Y方向平行放置，第一接触式图像传感器X1由第一牵引机构21所牵引，第二接触式图像传感器Y1由第二牵引机构22所牵引，所述图像扫描装置还包括控制系统23、后处理系统24以及原稿台25。所述控制系统23主要用于控制第一接触式图像传感器X1和第二接触式图像传感器Y1的正常工作，以及用于控制第一牵引机构21和第二牵引机构22的动作。所述后处理系统24用于对所述第一接触式图像传感器X1以及第二接触式图像传感器Y1传送来的信号进行后续处理。
所述图像扫描装置的工作原理如下：首先，将待扫描物(原稿7)放在原稿台25上，光源2发出的光透过原稿台25照射到原稿7上，经原稿7反射回来的光线经过原稿台25进入线性菲涅尔放大镜8，经放大后进入透镜5，被透镜5汇集到感光部4上，这些光线号被转换成电信号输出到后处理系统24，进行后续处理。第一牵引机构21在控制系统23的控制下，以a/N的步距牵引着第一接触式图像传感器X1沿Y方向前进，每走N步，就可以扫描原稿7的一行像素点，而感光部4收集的是N行像素点，因此，与原有图像扫描装置相比，在Y方向上，扫描分辨率提高了N倍。扫描完毕后，就可以得到一组Y方向上的数据。同理，利用第二牵引机构22牵引第二接触式图像传感器Y1，沿着X方向进行扫描，也可以得到一组X方向上的数据。经过后处理系统24，将两组数据合成一副完整的图像，就可以得到整幅提高了N倍分辨率的图像，实现了高分辨率扫描。
实施例2
图6示出了实施例2所示的图像扫描装置的结构示意图。本实施例与实施例1的区别在于，该图像扫描装置采用一个本发明所涉及的新型接触式图像传感器，例如第一接触式图像传感器X1，并增加了一个旋转装置26。其工作原理如下：第一牵引机构21在控制系统23的控制下，以a/N的步距牵引着第一接触式图像传感器X1沿Y方向前进，从而得到一组Y方向上的数据。当第一接触式图像传感器X1沿Y方向完成扫描后，在旋转装置26的作用下，第一接触式图像传感器X1旋转90度，与Y方向平行，第一牵引机构21在控制系统23的控制下牵引第一接触式图像传感器X1，沿着X方向进行扫描，也可以得到一组X方向上的数据，同实施例1一样，经过后处理系统24的后续处理，就可以得到整幅提高了N倍分辨率的图像，实现了高分辨率扫描。
本发明所涉及的接触式图像传感器可以实现单方向上的分辨率提高；具有本发明所涉及的接触式图像传感器的图像扫描装置能够实现高分辨率扫描。

Claims (12)

  1. 一种接触式图像传感器，包括光源、透镜、接收透镜所汇聚光的感光部、搭载排列成直线的光敏集成电路的传感器基板、容纳透镜和传感器基板的框架、设置在框架上部且用于搭载原稿的透光板，其特征在于：所述接触式图像传感器还包括一线性放大镜，所述线性放大镜设置于所述透光板和透镜之间，所述线性放大镜具有在单一方向上对物体进行线性放大的特性。
  2. 根据权利要求1所述的接触式图像传感器，其特征在于：所述线性放大镜采用线性菲涅尔放大镜。
  3. 一种包含权利要求1所述的接触式图像传感器的图像扫描装置，其特征在于：所述图像扫描装置包括两个所述接触式图像传感器，第一接触式图像传感器与图像扫描装置的X方向平行放置，第二接触式图像传感器与图像扫描装置的Y方向平行放置，第一接触式图像传感器由第一牵引机构所牵引，第二接触式图像传感器由第二牵引机构所牵引，所述图像扫描装置还包括控制系统、后处理系统以及原稿台，其中所述控制系统用于控制第一接触式图像传感器和第二接触式图像传感器的正常工作，以及用于控制第一牵引机构和第二牵引机构的动作；所述后处理系统用于对第一接触式图像传感器以及第二接触式图像传感器传送来的信号进行处理，所述原稿台用于放置原稿。
  4. 一种包含权利要求1所述的接触式图像传感器的图像扫描装置，其特征在于：所述图像扫描装置包括一个所述接触式图像传感器，所述接触式图像传感器与图像扫描装置的X方向平行放置，并由牵引机构所牵引，所述图像扫描装置还包括旋转装置、控制系统、后处理系统以及原稿台，其中所述旋转装置用于对所述接触式图像传感器进行90°旋转；所述控制系统用于控制接触式图像传感器正常工作，以及用于控制牵引机构的动作；所述后处理系统用于对接触式图像传感器传送来的信号进行处理，所述原稿台用于放置原稿。
  5. 一种接触式图像传感器，所述接触式图像传感器包括：
    框架；
    透光板，设置在所述框架的上部；
    透镜，所述框架容纳所述透镜；
    感光组件，设置在所述透镜下方；
    其特征在于，所述接触式图像传感器还包括：
    线性放大镜，设置在所述透光板和所述透镜之间，所述线性放大镜具有在物体的单一方向上对物体进行线性放大的特性。
  6. 根据权利要求5所述的接触式图像传感器，其特征在于，所述感光组件包括：
    感光部，所述感光部用于接收所述透镜汇聚的光线；
    传感器基板，所述框架容纳所述传感器基板，所述传感器基板用于搭载排列成直线的光敏集成电路。
  7. 根据权利要求5或6所述的接触式图像传感器，其特征在于，所述线性放大镜采用线性菲涅尔放大镜。
  8. 一种图像扫描装置，其特征在于，所述图像扫描装置包括：
    接触式图像传感器，所述接触式图像传感器为权利要求5至7中任一项所述的接触式图像传感器；
    牵引机构，用于驱动所述接触式图像传感器移动；
    控制系统，用于分别控制所述牵引机构和所述接触式图像传感器的动作。
  9. 根据权利要求8所述的图像扫描装置，其特征在于，所述图像扫描装置还包括：
    后处理系统，用于对所述接触式图像传感器传送来的信号进行处理。
  10. 根据权利要求9所述的图像扫描装置，其特征在于，所述图像扫描装置还包括：
    原稿台，所述原稿台用于放置原稿。
  11. 根据权利要求8所述的图像扫描装置，其特征在于，所述接触式图像传感器包括第一接触式图像传感器和第二接触式图像传感器，所述第一接触式图像传感器沿第一方向平行放置，所述第二接触式图像传感器沿第二方向平行放置，所述第一方向和所述第二方向之间具有夹角，所述牵引机构包括第一牵引机构和第二牵引机构，所述第一牵引机构用于驱动所述第一接触式图像传感器移动，所述第二牵引机构用于驱动所述第二接触式图像传感器移动。
  12. 根据权利要求8至10中任一项所述的图像扫描装置，其特征在于，所述图像扫描装置包括一个所述接触式图像传感器，所述图像扫描装置还包括旋转装置，所述旋转装置用于驱动所述接触式图像传感器进行旋转。
PCT/CN2017/073235 2016-05-18 2017-02-10 一种接触式图像传感器及图像扫描装置 WO2017197930A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US16/099,442 US10911629B2 (en) 2016-05-18 2017-02-10 Contact image sensor and image scanning device
JP2018535356A JP6664496B2 (ja) 2016-05-18 2017-02-10 イメージ走査装置
EP17798499.4A EP3461114B1 (en) 2016-05-18 2017-02-10 Contact image sensor and image scanning device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610330199.3 2016-05-18
CN201610330199.3A CN105872292B (zh) 2016-05-18 2016-05-18 一种接触式图像传感器及图像扫描装置

Publications (1)

Publication Number Publication Date
WO2017197930A1 true WO2017197930A1 (zh) 2017-11-23

Family

ID=56634344

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/073235 WO2017197930A1 (zh) 2016-05-18 2017-02-10 一种接触式图像传感器及图像扫描装置

Country Status (5)

Country Link
US (1) US10911629B2 (zh)
EP (1) EP3461114B1 (zh)
JP (1) JP6664496B2 (zh)
CN (1) CN105872292B (zh)
WO (1) WO2017197930A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105872292B (zh) * 2016-05-18 2019-02-19 威海华菱光电股份有限公司 一种接触式图像传感器及图像扫描装置
CN106303145A (zh) * 2016-09-28 2017-01-04 威海华菱光电股份有限公司 图像读取装置
CN108489548A (zh) * 2018-04-11 2018-09-04 广东理工学院 板材检测系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11164093A (ja) * 1997-12-01 1999-06-18 Ricoh Co Ltd 画像読取装置
US20050018279A1 (en) * 2003-05-28 2005-01-27 The Regents Of The University Of California Method and apparatus for viewing target
CN102984424A (zh) * 2012-12-18 2013-03-20 威海华菱光电股份有限公司 接触式图像传感器
CN204856523U (zh) * 2015-09-06 2015-12-09 浪潮电子信息产业股份有限公司 一种电子扫描枪放大扫描工具
CN105872292A (zh) * 2016-05-18 2016-08-17 威海华菱光电股份有限公司 一种接触式图像传感器及图像扫描装置
CN205647681U (zh) * 2016-05-18 2016-10-12 威海华菱光电股份有限公司 一种接触式图像传感器及图像扫描装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62142461A (ja) 1985-12-17 1987-06-25 Matsushita Electric Ind Co Ltd 固体撮像装置
US6288779B1 (en) * 1999-03-24 2001-09-11 Intel Corporation Close-up imaging device using a CMOS photosensitive element
CN2559995Y (zh) * 2002-08-27 2003-07-09 阮立山 超薄型卡式菲涅尔放大镜
CN201060321Y (zh) * 2007-05-26 2008-05-14 钱文耀 双种倍率卡片式放大镜
JP2009206842A (ja) * 2008-02-28 2009-09-10 Panasonic Corp 画像読取装置
JP4511608B2 (ja) * 2008-03-21 2010-07-28 シャープ株式会社 原稿読取装置
JP2013037298A (ja) * 2011-08-10 2013-02-21 Nippon Sheet Glass Co Ltd 正立等倍レンズアレイプレート

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11164093A (ja) * 1997-12-01 1999-06-18 Ricoh Co Ltd 画像読取装置
US20050018279A1 (en) * 2003-05-28 2005-01-27 The Regents Of The University Of California Method and apparatus for viewing target
CN102984424A (zh) * 2012-12-18 2013-03-20 威海华菱光电股份有限公司 接触式图像传感器
CN204856523U (zh) * 2015-09-06 2015-12-09 浪潮电子信息产业股份有限公司 一种电子扫描枪放大扫描工具
CN105872292A (zh) * 2016-05-18 2016-08-17 威海华菱光电股份有限公司 一种接触式图像传感器及图像扫描装置
CN205647681U (zh) * 2016-05-18 2016-10-12 威海华菱光电股份有限公司 一种接触式图像传感器及图像扫描装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3461114A4 *

Also Published As

Publication number Publication date
CN105872292A (zh) 2016-08-17
JP2019506061A (ja) 2019-02-28
JP6664496B2 (ja) 2020-03-13
CN105872292B (zh) 2019-02-19
EP3461114A4 (en) 2020-01-08
US20190149686A1 (en) 2019-05-16
EP3461114A1 (en) 2019-03-27
US10911629B2 (en) 2021-02-02
EP3461114B1 (en) 2023-03-22

Similar Documents

Publication Publication Date Title
WO2017197930A1 (zh) 一种接触式图像传感器及图像扫描装置
US10147174B2 (en) Substrate inspection device and method thereof
JP2012138891A (ja) 撮像装置
JPH03240372A (ja) 静止画撮像装置
JP6729960B2 (ja) カメラモジュール調整装置及びカメラモジュール調整方法
JP2010055507A (ja) 入出力装置
JPH08211281A (ja) 自動焦点検出方法
US11374041B2 (en) Systems and methods for imaging using mechanical scanning mechanisms
KR102037984B1 (ko) 다기능 광학 검사장치
TW202013084A (zh) 曝光裝置
CN205647681U (zh) 一种接触式图像传感器及图像扫描装置
CN105744166A (zh) 图像扫描时的自动聚焦装置及其自动聚集方法
JP2000275183A (ja) 画像取込み装置
JPH05164968A (ja) ニアフィールド顕微鏡装置
JPH05296739A (ja) 輪郭形状測定装置
JP2020035117A (ja) 印鑑撮像装置及び印鑑撮像方法
JP6469926B1 (ja) チップ裏面撮像装置及びボンディング装置
JP2002310517A (ja) 太陽光捕捉器
JP2004294270A (ja) レンズアレイ装置、撮像装置、及び、輝度分布測定装置
TWM470953U (zh) 顯微掃描裝置
CN109246343B (zh) 一种获取过采样图像的方法
JPH03295354A (ja) 画像読取装置
JP2017068775A (ja) ジェスチャー入力機能付きディスプレイ
JP2020135540A (ja) アンダーディスプレイ型指紋認証装置
JP6500405B2 (ja) 接触型２次元イメージセンサ素子およびセンサ装置

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2018535356

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

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

Ref document number: 17798499

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2017798499

Country of ref document: EP

Effective date: 20181218