公开(公告)号：JP2012160865A

公开(公告)日：2012-08-23

申请号：JP2011018483

申请日：2011-01-31

Applicant: Nisca Corp ,  ニスカ株式会社

Inventor： AMAMIYA FUMIMASA ,  OCHIAI TORU ,  SAKAMOTO FUMIHIDE ,  OZAWA JUNYA ,  TANAKA SATOSHI ,  KAGAMI YUICHI

IPC: H04N1/04 ,  F21S2/00 ,  F21V8/00 ,  F21V19/00 ,  F21Y101/02 ,  G03B27/54 ,  H04N1/028

Abstract: PROBLEM TO BE SOLVED: To provide an illuminating device without variation in light intensity distribution in which shading, especially inhomogeneity in an image read by an image read apparatus is not likely to occur by keeping a gap between a light source and an end surface of a light guide body constant.SOLUTION: An illuminating device of the present invention comprises: a light guide body including an end surface from which light enters, a diffusion reflection surface diffusely reflecting light entered from the end surface and a light emitting surface emitting the light diffusely reflected by the diffusion reflection surface toward an irradiation surface; a light source facing at least one end surface of the light guide body; and a reflector having a reflecting surface reflecting light from the light source to the one end surface of the light guide body. A flange part abutting the reflector is formed on the one end surface of the light guide body. The light source is attached to a circuit board mounting the light source. The reflector is sandwiched by the flange part of the light guide body and the circuit board to keep the light source and the light guide body located at a predetermined distance.

Abstract translation: 要解决的问题：提供一种照明装置，其光强度分布不变，其中通过保持光源和端部之间的间隙不可能发生由图像读取装置读取的图像中的阴影，特别是不均匀性 导光体表面不变。 解决方案：本发明的照明装置包括：导光体，其包括光入射的端面，漫反射表面漫反射从端表面入射的光;发光表面发射由光扩散反射的光 扩散反射面朝向照射面; 面向所述导光体的至少一个端面的光源; 以及反射器，其具有将来自光源的光反射到导光体的一个端面的反射面。 在导光体的一个端面形成有与反射体抵接的凸缘部。 光源连接到安装光源的电路板上。 反射器被导光体的凸缘部和电路板夹持，以将光源和导光体保持在预定距离。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011234245A

公开(公告)日：2011-11-17

申请号：JP2010104376

申请日：2010-04-28

Applicant: Nisca Corp ,  ニスカ株式会社

Inventor： TANAKA SATOSHI ,  MINAGAWA YOSHIHIKO ,  INOUE HIDEAKI ,  OZAWA JUNYA ,  HANAGATA YOSHIHIRO ,  ISHIMARU HODAKA

IPC: H04N1/19 ,  G06T1/00 ,  H04N1/04 ,  H04N1/407

Abstract: PROBLEM TO BE SOLVED: To provide an image reading apparatus that can read a document images with different glossiness at a reproducibility suited to use.SOLUTION: An image reading apparatus has data processing means for generating image data based on a specular reflection output value and a diffusion reflection output value obtained from photoelectric conversion means by irradiating light from a specular reflection light source and a diffusion reflection light source on a document image. The data processing means is used to obtain gloss pixel data by comparing a judgement threshold value with a correction output value that is corrected by the specular reflection output value based on a specular reflection correction value for shading-correcting the specular reflection output value, a diffusion correction value for shading-correcting the diffusion reflection output value, and the judgement threshold value for judging whether the specular reflection output value is a gloss pixel or not, thereby obtaining non-gloss pixel data from the correction output value corrected by the diffusion correction value.

Abstract translation: 要解决的问题：提供一种能够以适合使用的再现性读取具有不同光泽度的文档图像的图像读取装置。 解决方案：图像读取装置具有数据处理装置，用于通过从镜面反射光源和漫反射光源照射光，基于从光电转换装置获得的镜面反射输出值和扩散反射输出值来产生图像数据 在文件图像上。 数据处理装置用于通过将判定阈值与基于用于阴影校正镜面反射输出值的镜面反射校正值，镜面反射输出值校正的校正输出值进行比较来获得光泽像素数据，扩散 用于阴影校正扩散反射输出值的校正值以及用于判断镜面反射输出值是否为光泽像素的判定阈值，从而通过由扩散校正值校正的校正输出值获得非光泽像素数据 。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2010193361A

公开(公告)日：2010-09-02

申请号：JP2009037891

申请日：2009-02-20

Applicant: Nisca Corp ,  ニスカ株式会社

Inventor： SAKAMOTO FUMIHIDE ,  TANAKA SATOSHI

IPC: H04N1/04 ,  G03B27/54

Abstract: PROBLEM TO BE SOLVED: To provide an LED light source which is suitable as a light source of an image reader. SOLUTION: The light source is used for the image reader comprising: a platen on which a read document is placed; an LED light source for lighting up the read document placed on the platen; a condenser lens for converging reflected light from a main scanning line on the read document lit up by the LED light source; and a light-receiving means for receiving the reflected light from the main scanning line on the read document which has been converged by the condenser lens. The light source comprises an LED as a light-emitting source and a light guide for diffusing a lighting region of the LED lighting up the read document placed on the platen to at least a main scanning line width of the read document, and includes a plurality of reflecting surface bodies which are arrayed at predetermined intervals in the main scanning line direction while surface-confronted with the LED side in an internal surface reflection optical path of the light guide, and reflect the light of the LED to outside the light guide along the main scanning lines. A length of each reflecting surface body in a direction orthogonal to the main scanning line direction is suitably adjusted according to the quantity of light to be reflected. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供适合作为图像读取器的光源的LED光源。 解决方案：光源用于图像读取器，包括：放置读取文档的压板; 用于照亮放置在压板上的读取文档的LED光源; 聚光透镜，用于将来自主扫描线的反射光聚焦在由LED光源点亮的读取文档上; 以及光接收装置，用于接收已经被聚光透镜会聚的读取文件上的主扫描线的反射光。 光源包括作为发光源的LED和用于使LED的照明区域扩散的光导照射放置在压板上的读取文档至少读取的文档的主扫描线宽度，并且包括多个 沿着主扫描线方向以规定间隔排列的反射表面体，在光导的内表面反射光路面上与LED侧面对面的反射面体，并将LED的光沿着光导向外侧反射 主扫描线。 每个反射面主体在与主扫描线方向正交的方向上的长度根据要反射的光量适当地调节。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2008256395A

公开(公告)日：2008-10-23

申请号：JP2007096372

申请日：2007-04-02

Applicant: Nisca Corp ,  ニスカ株式会社

Inventor： SHIMURA YASUAKI ,  SAKURAI ISAMU ,  KONO TETSUJI ,  NOZAWA TSUNEO ,  TANAKA SATOSHI

IPC: G01M11/02

Abstract: PROBLEM TO BE SOLVED: To provide a lens inspection method and its device for greatly shortening inspection time of a lens used for converging reflected light from a document to a light receiving surface of a line sensor used in an image scanner.
SOLUTION: The lens inspection method is used for converging light from the document to the light receiving surface of the line sensor comprising a photoelectric conversion element used in the image scanner that scans the document. The inspection method includes respective steps, that is, (a) a step of fixing a measurement line which is a line passing through the center of the optical axis of the lens and is used to measure the performance of the lens, and (b) a step of measuring various performances of the lens, such as resolution, focal depth, and chromatic aberration, adapted to the line of the line sensor with respect to the measurement line.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种镜片检查方法及其装置，用于大大缩短用于将来自文件的反射光会聚到用于图像扫描仪的线传感器的光接收表面的透镜的检查时间。 解决方案：透镜检查方法用于将来自文件的光聚焦到线传感器的光接收表面，该线传感器包括用于扫描文件的图像扫描器中使用的光电转换元件。 检查方法包括各个步骤，即（a）固定作为穿过透镜的光轴中心的线的测量线并用于测量透镜的性能的步骤，以及（b） 测量相对于测量线适用于线传感器的线的透镜的各种性能，例如分辨率，焦深和色差的步骤。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JPH10111454A

公开(公告)日：1998-04-28

申请号：JP28312096

申请日：1996-10-03

Applicant: NISCA CORP

Inventor： TANAKA SATOSHI

IPC: G02B13/04

Abstract: PROBLEM TO BE SOLVED: To obtain a wide angle lens constituted of a small number of lenses, made compact and inexpensive, realizing a very long flange back and having excellent optical performance by constituting the lens of plural lens groups, that is, a negative 1st group, a negative 2nd group, a positive 3rd group and a positive 4th group and making the lens satisfy a specified condition. SOLUTION: This wide angle lens is constituted, of four lens groups, that is, the negative 1st group, the negative 2nd group, the positive 3rd group and the positive 4th group in order from an object side. Then, the negative 1st group and the positive 3rd group are constituted of a single lens, and the negative 2nd lens group and the positive 4th lens group are respectively constituted by sticking or proximately arranging one positive lens and one negative lens. The wide angle lens satisfies the condition, that is, an expression -1.2