WO2014000374A1 - 接触式图像传感器及其控制方法 - Google Patents
接触式图像传感器及其控制方法 Download PDFInfo
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- WO2014000374A1 WO2014000374A1 PCT/CN2012/085535 CN2012085535W WO2014000374A1 WO 2014000374 A1 WO2014000374 A1 WO 2014000374A1 CN 2012085535 W CN2012085535 W CN 2012085535W WO 2014000374 A1 WO2014000374 A1 WO 2014000374A1
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- WIPO (PCT)
- Prior art keywords
- angle
- light
- image sensor
- light source
- contact image
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Classifications
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- 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
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0077—Types of the still picture apparatus
- H04N2201/0081—Image reader
Definitions
- the present invention relates to the field of sensors, and in particular, to a contact image sensor and a control method thereof.
- the main component of the optically variable pigment is an optically variable film chip having specific spectral characteristics.
- the optical color-changing film is designed according to the principle of light interference of a multilayer film formed by depositing a plurality of materials of different refractive indexes on the same carrier, and its reflection spectrum changes with the change of the incident angle. That is, as the viewing angle changes, the color changing ink will appear in a different color.
- 1 is a cross-sectional view of a conventional contact image sensor including a light-emitting source 1, a lens 5, and a light-receiving portion 4 (ie, a photosensitive integrated circuit) that collects light from a lens 5, and is mounted with a photosensitive integrated arrangement arranged in a straight line.
- the sensor substrate 3 of the circuit 4, the frame 2 accommodating the light source 1, the lens 5, and the sensor substrate 3, and the light-transmitting plate 6 on which the original is placed on the frame 2, wherein 7 is a document.
- the light-transmitting plate 6 is fixed to the frame 2, and the light-transmitting plate 6 is perpendicular to the axis of the lens 5 in the frame 2, and is parallel to the sensor substrate 3, and the light source 1 is provided in two types.
- One is to provide a closed recess for accommodating the light source 1 on the frame 6.
- the closed recess is provided with a light transmission window of about 45° with respect to the transparent transparent plate, and the light emitted by the light source 1 is mostly transmitted at an angle of about 45°.
- the light-transmissive window and the light-transmitting plate 6 are irradiated onto the original document 7 on the outside, and the other is provided with a groove for accommodating the light source 1 on the frame 6, and a light source 1 is disposed in the groove, and the light source 1 is composed of a light source and a light guide column.
- the light guide column and the light-transmitting plate are about 45°, and the light emitted by the light source through the light guide column passes through the light-transmitting plate 6 at an angle of about 45°, and is irradiated onto the outer document 7 , and the lens 5 and the light-transmitting plate 6 are perpendicular.
- the light-transmitting plate 6 As described above, most of the light emitted from the light source 1 passes through the light-transmitting plate 6 at an angle of about 45°, and is irradiated onto the original document 7 on the outside, and the light in the text area on the original 7 is partially absorbed, and the light in the other white areas of the original 7 is light. Reflected, because of reflection, refraction, scattering, etc., these reflected light contain various angles The reflected light passes through the light-transmitting plate 6, is collected by the lens 5, and is irradiated onto the photosensitive region of the photosensitive portion 4 on the sensor substrate 3.
- the photosensitive portion 4 is composed of a plurality of photosensitive regions and a driving circuit, and the driving circuit can illuminate A circuit that photoelectrically converts light to each photosensitive region and outputs a signal.
- the received light is converted into an electrical signal and output through the drive circuit, and is output as image (text) information.
- the original is continuously moved, and the image (text) information recorded thereon is continuously read.
- the above-mentioned contact image sensor has the following problems: The light emitted from the light source enters the light-transmitting plate at an angle of about 45°, and then is irradiated onto the original, and the original reflects the light, and the reflected light enters the lens and is collected on the photosensitive portion.
- the present invention changes the incident angle of light of an existing contact image sensor by adding a plane mirror, and proposes an anti-counterfeit mark made of a color-changing ink and other anti-counterfeit marks or image information that require different reading angles.
- Image sensor and control method of contact image sensor changes the incident angle of light of an existing contact image sensor by adding a plane mirror, and proposes an anti-counterfeit mark made of a color-changing ink and other anti-counterfeit marks or image information that require different reading angles.
- a contact image sensor comprising a light transmissive plate, a sensor substrate, a photosensitive portion arranged on a sensor substrate, a lens disposed above the photosensitive portion, and a lens substrate and a lens capable of accommodating the sensor substrate and the lens
- the frame, the contact image sensor further comprises a plane mirror, the plane mirror is located in the frame, and the incident angle of the light is changed by adjusting the relative position of the plane mirror and the light source.
- the light emitted by the light source is incident on the plane mirror at a certain angle, and the plane mirror reflects the light, and the reflected light passes through the light-transmitting plate at a design angle and is irradiated onto the original.
- the light that is irradiated onto the original is reflected back to the light-transmitting plate by the original.
- the reflected light enters the lens and is collected on the photosensitive portion.
- This design angle is to read the color-changing ink anti-counterfeit mark or other security marks or images that require different reading angles.
- the angle required by the information, by adjusting different angles, the photosensitive portion can acquire different color information and make comparisons, thereby achieving the purpose of authenticity.
- the plane mirror of the present invention is located inside the frame, and the installation position of the plane mirror is calculated according to the angle requirement of the color changing ink reading.
- the installation position of the plane mirror is different, and the incident angle of the obtained light is different.
- the contact image sensor of the present invention may comprise a single planar mirror or a combination of two or more planar mirrors to meet the needs of a particular angle.
- the plane mirror of the present invention can be fixed in the frame at a specific angle, or can be continuously rotated at multiple angles by a rotating device.
- An indexing mechanism can be arranged on the rotating device to manually control the incident angle, or can be connected to the motor through the transmission device, and the motor is connected to the control device via the numerical control line to realize automatic adjustment of the incident angle of the light source.
- the rotating device can be disposed within the frame or disposed outside the frame by the drive shaft.
- the contact image sensor of the present invention comprises two light sources, and the incident angles of the two light sources are different with respect to the light-transmitting plate. Further, the incident angles of the two light sources with respect to the light-transmitting plate are respectively adjusted by the plane mirror.
- a contact image sensor control method comprising: a planar mirror for reflecting light emitted by a light source in a contact image sensor and irradiating onto the original, the method comprising: adjusting the light source and the plane mirror The relative position and angle are used to adjust the incident angle of the light source relative to the light-transmitting plate of the contact image sensor.
- adjusting the relative position and angle of the light source and the plane mirror comprises: calculating an incident angle required for the light irradiated onto the original according to the angle requirement of the color change ink reading; adjusting the plane mirror The angle is such that the angle of the light emitted by the plane mirror is the calculated angle.
- adjusting the relative position and angle of the light source and the plane mirror comprises: calculating an incident angle required for the light irradiated onto the original according to the angle requirement of the color change ink reading; adjusting the angle of the light source, The angle of the light emitted by the plane mirror is taken as the calculated angle.
- the invention adjusts the relative position of the plane mirror and the light source, and the light emitted by the light source is incident on the plane mirror at a certain angle, and the plane mirror reflects the light, and the reflected light passes through the light-transmitting plate at a design angle and illuminates the original Above, the light that is irradiated onto the original is reflected back to the light-transmitting plate by the original, and the reflected light enters the lens and is collected on the photosensitive portion, and the design angle is to read the color-changing ink anti-counterfeit mark or other anti-counterfeit mark that requires different reading angles.
- FIG. 1 is a cross-sectional view of a conventional contact image sensor.
- 2 is a schematic structural view of a contact image sensor according to Embodiment 1 of the present invention.
- 3 is a schematic structural view of a contact image sensor according to Embodiment 2 of the present invention.
- 4 is a schematic structural view of a contact image sensor according to Embodiment 3 of the present invention.
- FIG. 5 is a flowchart of a method of controlling a contact image sensor according to Embodiment 4 of the present invention.
- FIG. 1 is a cross-sectional view of a conventional contact image sensor.
- 2 is a schematic structural view of a contact image sensor according to Embodiment 1 of the present invention.
- 3 is a schematic structural view of a contact image sensor according to Embodiment 2 of the present invention.
- 4 is a schematic structural view of a contact image sensor according to Embodiment 3 of the present invention.
- FIG. 5 is a flowchart of a method of controlling
- a contact image sensor includes a light-transmitting plate, a sensor substrate, a photosensitive portion arranged on a sensor substrate, a lens disposed above the photosensitive portion, and a frame capable of accommodating the sensor substrate and the lens, and a structure of each of the above portions
- the connection between the parts is the same as in the prior art, and will not be described here.
- the invention is characterized in that a plane mirror is arranged in the frame, and the incident angle of the incident light with respect to the light-transmitting plate is changed by changing the relative position and angle of the light source and the plane mirror by using the reflection principle of the plane mirror.
- the plane mirror of the invention is located inside the frame, and the installation position of the plane mirror is calculated according to the angle requirement of the color changing ink reading.
- the installation position of the plane mirror is different, and the incident angle of the obtained light is different, such as reading
- the anti-counterfeiting marks for the color-changing inks of 100 yuan and 10 yuan are different, and the installation positions of the plane mirrors are also different.
- the plane mirror of the present invention can calculate the installation position of the plane mirror according to the angle requirement of the color changing ink reading, and is fixed in the frame in a single manner and a specific angle, that is, a plane reflection of a specific angle is set in the frame.
- the mirror is specially designed for reading an anti-counterfeiting mark.
- Two or more plane mirrors can also be arranged in the frame. Each plane mirror is fixed in the frame at different specific angles to read the color change at various angles. The need for ink anti-counterfeiting labels.
- the invention may be provided with a plane mirror rotating device, and the plane mirror rotating device may be disposed in the frame or may be disposed outside the frame through the transmission shaft, and the plane mirror is rotated by the rotating device to perform positioning at various angles.
- the indexing mechanism can be arranged on the rotating device.
- the structure of the rotating device and the indexing mechanism and their interconnection relationship with the plane mirror are the same as those in the prior art. Therefore, the rotating device can manually control the incident angle of the plane mirror. It can also be connected to the motor.
- the motor is connected to the control device via the CNC line to automatically adjust the position and angle of the plane mirror to adjust the incident angle of the light source.
- the invention may be provided with a light source rotating device.
- the light source rotating device may be disposed in the frame, or may be disposed outside the frame through the transmission shaft, and the light source is rotated by the rotating device to realize illumination at various angles.
- the indexing mechanism can be arranged on the rotating device.
- the rotating device can manually control the incident angle of the light source relative to the plane mirror. It can also be connected to the motor, and the motor is connected to the control device via the numerical control line to realize the automatic adjustment of the relative position of the plane mirror and the incident angle of the light, thereby achieving the object of the invention.
- the rotating device can manually control the incident angle of the light source relative to the plane mirror. It can also be connected to the motor, and the motor is connected to the control device via the numerical control line to realize the automatic adjustment of the relative position of the plane mirror and the incident angle of the light, thereby achieving the object of the invention.
- the relative position and angle of the plane mirror and the light source different incident angles can be obtained, and light of different incident angles is irradiated onto the original and reflected by the original back to the light-transmitting plate, and the reflected light enters the lens and is collected.
- the photosensitive portion can acquire different color information and make a comparison, thereby achieving the purpose of authenticity.
- 2 is a contact image sensor according to Embodiment 1 of the present invention
- the contact image sensor includes a light source 1, a light source 10, a plane mirror 5 that changes a light angle of the light source 10, a lens 6, and a receiving lens.
- the light-receiving portion 4 of the concentrated light that is, the photosensitive integrated circuit, the sensor substrate 3 on which the photosensitive integrated circuits arranged in a line are mounted, the frame 2 accommodating the lens 6 and the sensor substrate 3, and the upper portion of the frame 2 are provided for mounting the original 8 Light transmissive plate 7.
- the contact image sensor adds a plane mirror 5 and a light source 10, and the plane mirror 5 reflects the light emitted by the light source 1 to a specific The angle of incidence angle is irradiated onto the original 8, and the light emitted by the other light source 10 is irradiated onto the original 8 at different incident angles, and the light reflected by the color changing ink on the original 8 is collected by the lens 6 and irradiated to the photosensitive portion. 4 on.
- the spectral information of the light at different incident angles is reflected by the color changing ink.
- the electrical signals converted by different spectral information are also different. After comparison, the purpose of authenticity can be achieved.
- the contact image sensor includes a light source 1, a light source 10, a plane mirror 51 that changes a light angle of the light source 1, and a plane mirror 52,
- the plane mirror 53 that changes the angle of the light of the light source 10, the lens 6, the photosensitive portion 4 that collects the light from the receiving lens 6, the sensor substrate 3 on which the photosensitive portion is arranged in a straight line, the frame 2 that houses the lens 6 and the sensor substrate 3, and the arrangement A light-transmitting plate 7 for loading the original 8 on the upper portion of the frame 2.
- the working principle of the contact image sensor is as follows: the light emitted by the light source 1 is reflected by the plane mirror 51 and the plane mirror 52, and then irradiated onto the original 8 at a specific angle of incidence, and the light emitted by the light source 10 passes through the plane mirror 53. After the reflection, the incident angle is irradiated onto the original 8 at a different angle, and the light irradiated onto the original 8 is reflected by the color-changing ink on the original 8, and is collected by the lens 6 and irradiated onto the photosensitive portion 4.
- the spectral information of the light at different incident angles is reflected by the color changing ink.
- the electrical signals converted by different spectral information are also different. After comparison, the purpose of authenticity can be achieved.
- This embodiment 2 is to change the incident angle of light by a combination of planar mirrors. Since the adjustment of the incident angle needs to be adjusted according to the read color-changing ink anti-counterfeiting mark, and some angles are simply difficult to realize by changing the position and angle of the light source, this method is required.
- the contact image sensor includes a light source 1, a light source 10, a plane mirror 5 that changes the angle of the light of the light source 10, a lens 6, and a photosensitive portion that receives the light collected by the lens 6.
- the frame 2 of the substrate 3 is provided with a light-transmissive plate 7 on which an original is placed on the upper portion of the frame 2, and a document 8 and a drive unit 9 to be scanned.
- the plane mirror 5 is connected to the driving device 9.
- the driving device can be operated by manual operation or by an automatic control device. The advantages of this solution are: The same product has high flexibility, can meet the needs of various angles, and has high adjustment precision. This embodiment also provides an embodiment of a control method of the contact image sensor, which is explained below.
- the contact image sensor in this embodiment includes a light source and a plane mirror for adjusting a light angle of the light source.
- the plane The light emitted from the mirror light source is reflected and irradiated onto the original, and the method includes the following steps S102 and S104.
- Step S102 calculating an incident angle required for the light irradiated onto the original according to the angle requirement of the color changing ink reading. For example, when the reading of the RMB is 100 yuan and 10 yuan, the color ink anti-counterfeiting mark is different, and the incident angle required for the anti-counterfeiting mark is also different.
- Step S104 Adjust the angle of the plane mirror so that the angle of the light emitted by the plane mirror is the calculated angle.
- the rotation of the plane mirror is set by changing the angle of the plane mirror.
- the angle of incidence required to illuminate the original light can be adjusted as needed.
- 6 is a flowchart of a method for controlling a contact image sensor according to Embodiment 5 of the present invention.
- the contact image sensor in this embodiment includes a light source and a plane mirror for adjusting a light ray angle. Specifically, the plane The light emitted from the mirror light source is reflected and irradiated onto the original.
- the method includes the following steps S202 and S204.
- Step S202 calculating an incident angle required for the light irradiated onto the original according to the angle requirement of the color changing ink reading; for example, when the reading of the RMB is 100 yuan and 10 yuan, the color ink anti-counterfeiting mark is different, and the incident angle required for the anti-counterfeiting mark is also different.
- Step S204 Adjust the angle of the light source so that the angle of the light emitted by the plane mirror is the calculated angle. A setting that rotates the light source by changing the angle of the light source. The angle of incidence required to illuminate the original light can be adjusted as needed.
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- Engineering & Computer Science (AREA)
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- Facsimile Scanning Arrangements (AREA)
- Facsimile Heads (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
Abstract
一种接触式图像传感器，其包括透光板、传感器基板，感光部、透镜以及框架，还设有平面反光镜，平面反光镜位于框架内，通过调整平面反光镜与光源的相对位置、角度，光源发出的光以一定的角度射到平面反光镜上，平面反光镜使光发生反射，反射光以设计角度透过透光板并照射到原稿上，照射到原稿上的光线被原稿反射回透光板，这些反射光进入透镜并汇集到感光部上；还提供了一种接触式图像传感器的控制方法。
Description
接触式图像传感器及其控制方法 技术领域 本发明涉及传感器领域， 具体涉及一种接触式图像传感器及其控制方法。 背景技术 我们知道， 光学变色油墨的变色效果是由油墨中的光变颜料产生的。 光变颜料的 主要成分是具有特定光谱特性的光学变色薄膜碎片。 光学变色薄膜是根据多层薄膜的 光干涉原理设计出来， 该光学变色薄膜由多种不同折射率的物质， 依次沉淀在同一载 体上而形成， 它的反射光谱会随入射角的改变而改变， 即随着观察角的变化， 变色油 墨会呈现出不同的颜色。 由此可知， 要想识别变色油墨做成的防伪标记， 必须改变入 射角度。 图 1是现有接触式图像传感器的断面图， 该接触式图像传感器包括发光光源 1， 透镜 5， 接收透镜 5所汇聚光的感光部 4 (即光敏集成电路）， 搭载排列成直线的光敏 集成电路 4的传感器基板 3， 容纳光源 1、 透镜 5和传感器基板 3的框架 2， 设置在 框架 2上的搭载原稿的透光板 6， 其中， 7为原稿。 在上述接触式图像传感器中， 透光板 6固定在框架 2上， 透光板 6与框架 2内的 透镜 5的轴线呈垂直状， 与传感器基板 3呈平行状， 光源 1的设置有两种， 一种是在 框架 6上设有容纳光源 1 的封闭凹槽， 封闭凹槽上设有相对透光板呈 45°左右的透光 窗， 光源 1发出的光大部分以约 45°角透过透光窗、透光板 6， 照射到外面的原稿 7上, 另一种是在框架 6上设有容纳光源 1的凹槽， 凹槽内设有光源 1， 光源 1 由光源和导 光柱组成， 导光柱与透光板呈 45°左右， 光源经导光柱发出的光以约 45°角透过透光板 6， 照射到外面的原稿 7上,透镜 5与透光板 6呈垂直状， 如上所述， 光源 1发出的光 大部分以约 45°角透过透光板 6， 照射到外面的原稿 7上,原稿 7上的文字区域光被部 分吸收， 而在原稿 7其它白色区域的光被反射， 因为反射、 折射、 散射等因素造成这 些反射光包含各种角度的光线， 这些反射光穿过透光板 6,被透镜 5收集,照射到传感器 基板 3上的感光部 4的感光区， 感光部 4是由许多感光区和驱动电路组成， 该驱动电 路能将照射到各感光区的光进行光电转换，并将信号输出的电路。接收的光转换成电信 号后经过驱动电路输出,作为图像 （文字）信息向外输出， 原稿不断移动， 其上所记载 的图像 (文字)信息就会被连续读取下来。
上述接触式图像传感器中存在以下问题： 光源发出的光以约 45°的角度进入透光 板， 然后照射到原稿上， 原稿将这些光线反射出去， 反射光就进入透镜， 汇集到感光 部上。 而我们知道， 变色油墨做成的防伪标记要从不同的方向观察得到不同的颜色， 通过比较不同的颜色输出， 来能鉴别其真伪。 而现有接触式图像传感器无法实现多角 度读取， 也就无法鉴别用变色油墨做成的防伪标记。 针对相关技术中接触式图像传感器读取角度单一的问题， 目前尚未提出有效的解 决方案。 发明内容 本发明通过增加平面反光镜来改变现有接触式图像传感器光的入射角， 提出一种 可以读取变色油墨做成的防伪标记及其他需要不同读取角度的防伪标记或图像信息的 接触式图像传感器及接触式图像传感器的控制方法。 本发明可以通过如下措施达到： 一种接触式图像传感器， 包括透光板、 传感器基板、 传感器基板上搭载排列成直 线的感光部、 设置于感光部上方的透镜以及能容纳上述传感器基板和透镜的框架， 该 接触式图像传感器还包括平面反光镜， 平面反光镜位于框架内， 通过调整平面反光镜 与光源的相对位置， 改变光的入射角度。 本发明通过调整平面镜与光源的相对位置， 光源发出的光以一定的角度射到平面反光镜上， 平面反光镜使光发生反射， 反射光以 设计角度透过透光板并照射到原稿上， 照射到原稿上的光线被原稿反射回透光板， 这 些反射光会进入透镜并汇集到感光部上， 而这个设计角度就是读取变色油墨防伪标识 或其他需要不同读取角度的防伪标记或图像信息所需要的角度，通过调整不同的角度， 感光部能够获取不同的颜色信息并做出比较， 从而达到识别真伪的目的。 本发明所述的平面反光镜位于框架内部， 根据变色油墨读取的角度要求计算得到 平面反光镜的安装位置， 平面反光镜的安装位置不同， 所获得的光的入射角就不同。 本发明接触式图像传感器可以包括单个平面反光镜， 也可以包括两个或多个平面 反光镜组合使用， 以满足特殊角度的需要。 本发明所述的平面反光镜可以以特定的角度固定于框架内， 也可以通过旋转装置 进行多角度连续旋转。 旋转装置上可以设置分度机构， 以进行手动控制入射角度， 也 可以经传动装置与电动机相连接， 电动机经数控线与控制装置相连接， 以实现自动调 整光源的入射角度。
旋转装置可设置于框架内， 或者通过传动轴设置于框架外。 本发明接触式图像传感器包括两个光源， 并且两个光源相对于透光板的入射角度 不同， 进一步地， 两个光源相对于透光板的入射角度分别由平面反光镜调整。 一种接触式图像传感器的控制方法， 该接触式图像传感器包括平面反光镜， 用于 将接触式图像传感器中光源发出的光反射后照射到原稿上， 该方法包括： 调整光源与 平面反光镜的相对位置、 角度， 以调整光源相对于接触式图像传感器的透光板的入射 角度。 本发明接触式图像传感器的控制方法中， 调整光源与平面反光镜的相对位置、 角 度包括： 根据变色油墨读取的角度要求计算照射到原稿上的光所需的入射角度； 调整 平面反光镜的角度， 以使经平面反光镜发射后的光的角度为计算出的角度。 本发明接触式图像传感器的控制方法中， 调整光源与平面反光镜的相对位置、 角 度包括： 根据变色油墨读取的角度要求计算照射到原稿上的光所需的入射角度； 调整 光源的角度， 以使经平面反光镜发射后的光的角度为计算出的角度。 本发明经过调整平面反光镜与光源的相对位置， 光源发出的光以一定的角度射到 平面反光镜上， 平面反光镜使光发生反射， 反射光以设计角度透过透光板并照射到原 稿上， 照射到原稿上的光线被原稿反射回透光板， 这些反射光会进入透镜并汇集到感 光部上， 而这个设计角度就是读取变色油墨防伪标识或其他需要不同读取角度的防伪 标记或图像信息所需要的角度， 通过调整不同的角度， 感光部就能获取不同的颜色信 息并做出比较， 从而达到识别真伪的目的。 附图说明 图 1为现有接触式图像传感器的断面图。 图 2为本发明实施例 1所示的接触式图像传感器的结构示意图。 图 3为本发明实施例 2所示的接触式图像传感器的结构示意图。 图 4为本发明实施例 3所示的接触式图像传感器的结构示意图。 图 5为本发明实施例 4所示的接触式图像传感器的控制方法的流程图。 图 6为本发明实施例 5所示的接触式图像传感器的控制方法的流程图。
图中标记： 光源 1、 框架 2、 传感器基板 3、 感光部 4、 平面反光镜 5、 透镜 6、 透 光板 7、 原稿 8、 驱动装置 9 具体实施方式 下面结合附图对本发明作进一步描述： 一种接触式图像传感器， 包括透光板、 传感器基板、 传感器基板上搭载排列成直 线的感光部、 设置于感光部上方的透镜以及能容纳上述传感器基板和透镜的框架， 上 述各部分的结构和各部分之间的连接方式与现有技术相同， 此不赘述。 本发明的特征 在于框架内设有平面反光镜， 利用平面镜的反光原理， 通过改变光源与平面镜的相对 位置、 角度， 来改变入射光相对于透光板的入射角度。 本发明所述的平面反光镜位于框架内部， 根据变色油墨读取的角度要求计算出平 面反光镜的安装位置， 平面反光镜的安装位置不同， 所获得的光的入射角就不同， 如 读取人民币时， 100元和 10元的变色油墨防伪标识不同， 平面反光镜的安装位置也不 相同。 本发明所述的平面反光镜可以根据变色油墨读取的角度要求计算出平面反光镜的 安装位置， 以单个方式、 特定的角度固定于框架内使用， 即框架内设定一个特定角度 的平面反光镜， 专门针对一种防伪标识进行读取， 也可以在框架内设置两个或多个平 面反光镜， 每个平面反光镜都以不同特定角度固定于框架内， 以满足多种角度读取变 色油墨防伪标识的需要。 本发明可以设有平面反光镜旋转装置， 平面反光镜旋转装置可以设置在框架内， 也可以通过传动轴设置在框架外， 通过旋转装置使平面反光镜进行旋转并进行多种角 度的定位。 旋转装置上可以设置分度机构， 旋转装置和分度机构的结构及它们与平面 反光镜间的相互连接关系与现有技术相同， 此不赘述， 旋转装置可以通过手动控制平 面反光镜的入射角度， 也可以与电动机相连接， 电动机经数控线与控制装置相连接， 以实现自动调节平面反光镜的位置和角度， 从而达到调整光源的入射角度。 本发明可以设有光源旋转装置， 光源旋转装置可以设置在框架内， 也可以通过传 动轴设置在框架外， 通过旋转装置使光源进行旋转， 实现多种角度的照射。 旋转装置 上可以设置分度机构， 旋转装置和分度机构的结构及它们与光源间的相互连接关系与 现有技术相同， 此不赘述， 旋转装置可以通过手动控制光源相对平面反光镜的入射角 度， 也可以与电动机相连接， 电动机经数控线与控制装置相连接， 以实现自动调节平 面反光镜的相对位置和光的入射角度， 从而达到发明目的。
如上所述， 通过改变平面反光镜与光源的相对位置、 角度， 就可以获得不同的入 射角度， 不同入射角度的光照射到原稿上被原稿反射回透光板， 这些反射光会进入透 镜并汇集到感光部上， 感光部就能获取不同的颜色信息并做出比较， 从而达到识别真 伪的目的。 如附图 2所示是本发明的实施例 1所示的接触式图像传感器， 该接触式图像传感 器包括光源 1、 光源 10、 改变光源 10的光线角度的平面反光镜 5、 透镜 6、 接收透镜 6所汇聚光的感光部 4， 即光敏集成电路、 搭载排列成直线的光敏集成电路的传感器 基板 3、 容纳透镜 6和传感器基板 3的框架 2、 设置在框架 2上部且用于搭载原稿 8 的透光板 7。 本实施例中上述的各组成部分的结构与现有技术的主要区别在于： 接触 式图像传感器增加了平面反光镜 5和光源 10，平面反光镜 5将光源 1发出的光反射后， 以特定的角度入射角照射到原稿 8上，而另一个光源 10发出的光线以不同的入射角照 射到原稿 8上， 经过原稿 8上的变色油墨反射回来的光线就会被透镜 6收集并照射到 感光部 4上。 不同的入射角度的光线被变色油墨反射后的光谱信息就不同。 不同的光 谱信息转换出的电信号也不同， 经过比较， 就能达到识别真伪的目的。 如附图 3所示是本发明的实施例 2所示的接触式图像传感器， 该接触式图像传感 器包括光源 1、 光源 10、 改变光源 1的光线角度的平面反光镜 51和平面反光镜 52、 改变光源 10的光线角度的平面反光镜 53、 透镜 6、 接收透镜 6所汇聚光的感光部 4、 搭载排列成直线的感光部的传感器基板 3、容纳透镜 6和传感器基板 3的框架 2、设置 在框架 2上部且用于搭载原稿 8的透光板 7。 该接触式图像传感器的工作原理如下：光源 1发出的光线经平面反光镜 51和平面 反光镜 52反射后， 以特定的角度入射角照射到原稿 8上， 光源 10发出的光线经平面 反光镜 53反射后， 以不同的角度入射角照射到原稿 8上， 照射到原稿 8上的光线经过 原稿 8上的变色油墨反射， 被透镜 6收集并照射到感光部 4上。 不同的入射角度的光 线被变色油墨反射后的光谱信息就不同。 不同的光谱信息转换出的电信号也不同， 经 过比较， 就能达到识别真伪的目的。 该实施例 2是通过平面反光镜的组合方式来改变光的入射角度。 因为入射角的调 整需要根据读取的变色油墨防伪标识进行调节， 而有些角度简单地通过改变光源的位 置、 角度难以实现， 需要采用这种方法。 附图 4所示是本发明的另一实施例， 该接触式图像传感器包括光源 1， 光源 10、 改变光源 10的光线角度的平面反光镜 5， 透镜 6， 接收透镜 6所汇聚光的感光部 4， 即光敏集成电路， 搭载排列成直线的光敏集成电路的传感器基板 3， 容纳透镜 5、传感
器基板 3的框架 2， 设置在框架 2上部的搭载原稿的透光板 7， 需要扫描的原稿 8、 驱 动装置 9。本实施例是将平面反光镜 5与驱动装置 9连接.驱动装置可以通过手动操作， 也可以通过自动控制装置进行操作。 这个方案的优点是： 同一个产品灵活性高， 可以 满足各种不同角度的需求、 调节精度高。 本具体实施方式还提供了接触式图像传感器的控制方法的实施例， 说明如下。 图 5为本发明实施例 4所示的接触式图像传感器的控制方法的流程图， 该实施例 中的接触式图像传感器包括光源和用于调整光源光线角度的平面反光镜， 具体地， 该 平面反光镜光源发出的光反射后照射到原稿上， 该方法包括如下的步骤 S102 和步骤 S104。 步骤 S102: 根据变色油墨读取的角度要求计算照射到原稿上的光所需的入射角 度， 例如， 读取人民币时 100元和 10元的变色油墨防伪标识不同， 防伪标识所需的入 射角度也不同。 步骤 S104: 调整平面反光镜的角度， 以使经平面反光镜发射后的光的角度为计算 出的角度。 将平面反光镜可旋转的设置， 则通过改变平面反光镜的角度。 使得照射到 原稿上光所需的入射角度能够根据需要调整。 图 6为本发明实施例 5所示的接触式图像传感器的控制方法的流程图， 该实施例 中的接触式图像传感器包括光源和用于调整光源光线角度的平面反光镜， 具体地， 该 平面反光镜光源发出的光反射后照射到原稿上， 该方法包括如下的步骤 S202 和步骤 S204。 步骤 S202: 根据变色油墨读取的角度要求计算照射到原稿上的光所需的入射角 度； 例如， 读取人民币时 100元和 10元的变色油墨防伪标识不同， 防伪标识所需的入 射角度也不同。 步骤 S204: 调整光源的角度， 以使经平面反光镜发射后的光的角度为计算出的角 度。 将光源可旋转的设置， 则通过改变光源的角度。 使得照射到原稿上光所需的入射 角度能够根据需要调整。
Claims
权 利 要 求 书 、 一种接触式图像传感器， 包括透光板 （7)， 传感器基板 （3 )， 所述传感器基板
(3 )上搭载排列成直线的感光部（4)，设置于所述感光部（4)上方的透镜（6)， 以及能容纳所述传感器基板 （3 ) 和所述透镜 （6) 的框架 （2)， 其特征在于， 所述接触式图像传感器还包括：
设置于所述框架内的平面反光镜（ 5 )，通过调整光源（ 1 )与平面反光镜（ 5 ) 的相对位置、 角度， 以调整光源 （1 ) 相对于透光板 （7) 的入射角度。 、 根据权利要求 1所述的接触式图像传感器， 其特征在于， 所述平面反光镜 （5 ) 为单个， 根据变色油墨读取的角度要求计算出平面反光镜（5 )的安装位置和角 度， 以特定的角度固定于所述框架 （2) 内。 、 根据权利要求 1所述的接触式图像传感器， 其特征在于， 根据变色油墨读取的 角度要求计算出平面反光镜的安装位置和角度， 在框架内设置至少两个平面反 光镜 （5 )， 每个平面反光镜 （5 ) 以特定角度固定于框架 （2) 内特定位置上。 、 根据权利要求 1所述的接触式图像传感器，其特征在于，还包括：旋转装置（9)， 光源 （1 ) 通过旋转装置 （9) 进行转动， 改变平面反光镜 （5 ) 的入射角度。 、 根据权利要求 1所述的接触式图像传感器，其特征在于，还包括：旋转装置（9)， 平面反光镜 （5 ) 通过旋转装置 （9) 进行转动， 调整平面反光镜 （5 ) 的角度。 、 根据权利要求 4或 5所述的接触式图像传感器，其特征在于，所述旋转装置（9) 包括分度机构。 、 根据权利要求 4或 5所述的接触式图像传感器， 其特征在于， 还包括传动装置 和电动机， 其中， 所述旋转装置 （9) 经所述传动装置连接至所述电动机。 、 根据权利要求 7所述的接触式图像传感器， 其特征在于， 所述旋转装置（9)设 置于所述框架 （2) 内。 、 根据权利要求 7所述的接触式图像传感器， 其特征在于， 所述旋转装置（9)通 过传动轴设置于所述框架 （2) 夕卜。 0、 根据权利要求 1所述的接触式图像传感器，其特征在于，还包括另一光源（10)， 所述另一光源 （10) 与所述光源 （1 ) 相对于透光板 （7) 的入射角度不同。
、 根据权利要求 10所述的接触式图像传感器，其特征在于，还包括另一平面反光 镜 （11 )， 所述另一平面反光镜 （11 )通过调整所述另一光源 （10) 与所述另一 平面反光镜 （11 ) 的相对位置、 角度， 以调整所述另一光源 （10) 相对于透光 板 （7) 的入射角度。 、 一种接触式图像传感器的控制方法， 其特征在于， 所述接触式图像传感器包括 平面反光镜， 用于将所述接触式图像传感器中光源发出的光反射后照射到原稿 上， 所述方法包括：
调整所述光源与平面反光镜的相对位置、 角度， 以调整所述光源相对于所 述接触式图像传感器的透光板的入射角度。 、 根据权利要求 12所述的控制方法，其特征在于，调整所述光源与平面反光镜的 相对位置、 角度包括：
根据变色油墨读取的角度要求计算照射到所述原稿上的光所需的入射角 度；
调整所述平面反光镜的角度， 以使经所述平面反光镜发射后的光的角度为 计算出的角度。 、 根据权利要求 12所述的控制方法，其特征在于，调整所述光源与平面反光镜的 相对位置、 角度包括：
根据变色油墨读取的角度要求计算照射到所述原稿上的光所需的入射角 度；
调整所述光源的角度， 以使经所述平面反光镜发射后的光的角度为计算出 的角度。
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| CN102917153B (zh) * | 2012-11-20 | 2018-01-16 | 威海华菱光电股份有限公司 | 线阵图像读取装置 |
| CN102984425B (zh) * | 2012-12-18 | 2014-12-10 | 威海华菱光电股份有限公司 | 全息图图像信息识别的接触式图像传感器 |
| CN103139430A (zh) * | 2013-03-20 | 2013-06-05 | 深圳市怡化电脑有限公司 | 图像扫描装置 |
| CN103335279B (zh) * | 2013-07-04 | 2015-12-02 | 威海华菱光电股份有限公司 | 发光装置和图像传感器 |
| CN103929562B (zh) * | 2014-04-29 | 2017-08-01 | 威海华菱光电股份有限公司 | 图像传感器、图像扫描和厚度检测方法 |
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