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    • 3. 发明授权
    • Pattern reading apparatus
    • 图案阅读器
    • US06498649B2
    • 2002-12-24
    • US09821018
    • 2001-03-30
    • Tuyoshi Ishikawa
    • Tuyoshi Ishikawa
    • G01N2155
    • G03F7/70616G02B27/021
    • A pattern reading apparatus includes a minute-area light source positioned such that an illumination light beam is incident on an object surface having a pattern formed thereon as an object to be read without passing through a lens. An objective lens converges a light beam having information of the pattern. A spatial filter has a shading region that shades a portion of the light beam having passed through the objective lens, the portion forming an image of the light source. An imaging element reads an image of the pattern formed by the light beam having passed through the spatial filter.
    • 图案读取装置包括:微小区域光源,其被定位成使得照明光束入射到具有形成在其上的图案的物体表面上,作为要读取的对象而不经过透镜。 物镜会聚具有图案信息的光束。 空间滤光器具有遮蔽已经穿过物镜的光束的一部分的阴影区域,该部分形成光源的图像。 成像元件读取通过空间滤光器的光束形成的图案的图像。
    • 4. 发明授权
    • Pattern reading apparatus
    • 图案阅读器
    • US06421129B2
    • 2002-07-16
    • US09821019
    • 2001-03-30
    • Tuyoshi Ishikawa
    • Tuyoshi Ishikawa
    • G01N2155
    • G03F7/70616G02B27/021
    • A pattern reading apparatus includes an objective lens positioned opposite an object surface, the object surface being a reflection surface having a pattern formed thereon as an object to be read. A minute-area light source is positioned to be conjugate with a center of curvature of the object surface through the objective lens, for illuminating the object surface through the objective lens. An imaging lens is positioned farther from the object surface than the light source, with the optical axis of the imaging lens being coincident with the objective lens. An imaging element reads the image of the pattern which is reflected at the object surface and formed through the objective lens and the imaging lens.
    • 图案读取装置包括与物体表面相对定位的物镜,物体表面是具有形成在其上的图案作为要读取的对象的反射表面。 微小区域光源被定位成通过物镜与物体表面的曲率中心共轭,用于通过物镜照射物体表面。 成像透镜被放置得比光源远离物体表面,成像透镜的光轴与物镜重合。 成像元件读取通过物镜和成像透镜形成的物体表面反射的图案的图像。
    • 5. 发明授权
    • Pattern reading apparatus
    • 图案阅读器
    • US06310689B1
    • 2001-10-30
    • US08916408
    • 1997-08-22
    • Tuyoshi IshikawaKenichiro OtsukaHiroaki Ando
    • Tuyoshi IshikawaKenichiro OtsukaHiroaki Ando
    • G01N2147
    • G03F7/70616G02B27/021
    • A pattern reading apparatus for reading a pattern from a reflective object or a transparent object. The pattern reading apparatus includes a minute-area light source, an objective lens system, an imaging lens, and an imaging element. The objective lens system causes the illumination light beam from the light source to be incident on the object and converges the light beam reflected from or transmitted through the object. The imaging lens forms an image of the object using only a scattered component of light which has been reflected from or which has passed through the object. The imaging element is disposed at a position where the image of the pattern is imaged for reading the pattern. In particular, light that forms an image of the light source is prevented from reaching the imaging element. In the case of a reflective object, ghosting light due to a reflection from a surface of the objective lens is prevented from reaching the imaging element.
    • 一种用于从反射物体或透明物体读取图案的图案读取装置。 图案读取装置包括微小区域光源,物镜系统,摄像透镜和摄像元件。 物镜系统使得来自光源的照明光束入射到物体上并且会聚从物体反射或透过物体的光束。 成像透镜仅使用从已被反射或穿过物体的光的散射分量形成物体的图像。 成像元件设置在图案的图像被成像以读取图案的位置处。 特别地,防止形成光源的图像的光到达成像元件。 在反射物体的情况下,防止由于来自物镜表面的反射而产生的重影光到达成像元件。
    • 7. 发明授权
    • Pattern reading apparatus
    • 图案阅读器
    • US06622915B2
    • 2003-09-23
    • US09821017
    • 2001-03-30
    • Tuyoshi Ishikawa
    • Tuyoshi Ishikawa
    • G06K710
    • G03F7/70616G02B27/021
    • A pattern reading apparatus reads a pattern from a reflective object. The pattern reading apparatus includes a minute-area light source, an objective lens system, an imaging lens, and an imaging element. The objective lens system causes the illumination light beam from the light source to be incident on the object and converges the light beam reflected from the object. The imaging lens forms an image of the object using only a scattered component of light which has been reflected from the object. The imaging element is positioned such that the image of the pattern is imaged for reading the pattern. A shift mechanism is provided for supporting the objective lens for movement parallel to a direction approximately perpendicular to the optical axis of the objective lens.
    • 图案读取装置从反射物体读出图案。 图案读取装置包括微小区域光源,物镜系统,摄像透镜和摄像元件。 物镜系统使得来自光源的照明光束入射到物体上并使从物体反射的光束会聚。 成像透镜仅使用已经从物体反射的光的散射分量来形成物体的图像。 成像元件被定位成使得图案的图像被成像以读取图案。 提供了一种移动机构,用于支撑物镜平行于大致垂直于物镜的光轴的方向移动。
    • 8. 发明授权
    • Pattern reading apparatus
    • 图案阅读器
    • US06476917B2
    • 2002-11-05
    • US09820633
    • 2001-03-30
    • Tuyoshi Ishikawa
    • Tuyoshi Ishikawa
    • G01N2155
    • G03F7/70616G02B27/021
    • A pattern reading apparatus reads a pattern from a reflective object. The pattern reading apparatus includes a minute-area light source, an objective lens system, an imaging lens, and an imaging element. The objective lens system causes the illumination light beam from the light source to be incident on the object and converges the light beam reflected from the object. The imaging lens forms an image of the object using only a diffused component of light which has been reflected from the object. The imaging element is positioned where the image of the pattern is imaged for reading the pattern.
    • 图案读取装置从反射物体读取图案。 图案读取装置包括微小区域光源,物镜系统,摄像透镜和摄像元件。 物镜系统使得来自光源的照明光束入射到物体上并使从物体反射的光束会聚。 成像透镜仅使用已经从物体反射的光的扩散分量来形成对象的图像。 成像元件定位在图案的图像被成像以读取图案的位置。
    • 9. 发明授权
    • Pattern reading apparatus
    • 图案阅读器
    • US06429937B2
    • 2002-08-06
    • US09820822
    • 2001-03-30
    • Tuyoshi Ishikawa
    • Tuyoshi Ishikawa
    • G01N2155
    • G03F7/70616G02B27/021
    • A pattern reading apparatus reads a pattern from a reflective object. The pattern reading apparatus includes a minute-area light source, an objective lens system, an imaging lens, and an imaging element. The objective lens system causes the illumination light beam from the light source to be incident on the object and converges the light beam reflected from the object. The imaging lens forms an image of the object using only a diffused component of light which has been reflected from the object. The imaging element is disposed at a position where the image of the pattern is imaged for reading the pattern. An adjustment mechanism adjusts a position of the light source in a plane perpendicular to a principal beam of the illumination light beam.
    • 图案读取装置从反射物体读取图案。 图案读取装置包括微小区域光源,物镜系统,摄像透镜和摄像元件。 物镜系统使得来自光源的照明光束入射到物体上并使从物体反射的光束会聚。 成像透镜仅使用已经从物体反射的光的扩散分量来形成对象的图像。 成像元件设置在图案的图像被成像以读取图案的位置处。 调整机构调整在与照明光束的主光束垂直的平面内的光源的位置。