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    • 6. 发明授权
    • Lens testing device and testing sheet
    • 镜头测试装置和测试表
    • US06788401B1
    • 2004-09-07
    • US10189601
    • 2002-07-08
    • Masashi KitabayashiKoichi Kojima
    • Masashi KitabayashiKoichi Kojima
    • G01B900
    • G01M11/0264G01M11/0292
    • The present invention provides a lens inspection apparatus and an inspection sheet that make is possible to easily evaluate the resolution of a lens at low cost. A lens inspection apparatus can include an inspection sheet having a test pattern, a sliding holding portion for holding the inspection sheet, a light source for introducing a light beam into the test pattern of the inspection sheet held by the sliding holding portion, a rotary holding portion for holding the sliding holding portion so that the sliding holding portion can rotate in a plane, and a measuring section for capturing an image projected on a screen through the inspection sheet and a projection lens to be inspected, and subjecting the image to image processing. The test pattern has a measuring region in which linear light-shielding portions are arranged in stripes so as to achieve a predetermined spatial frequency. By rotating the rotary holding portion, the resolution of the test pattern, in which the light-shielding portions extend in different directions, can be easily evaluated. Accordingly, the invention makes it possible to simply evaluate the lens resolution at a low cost.
    • 本发明提供一种透镜检查装置和检查片,其能够以低成本容易地评价透镜的分辨率。 透镜检查装置可以包括具有测试图案的检查片,用于保持检查片的滑动保持部,用于将光束引入到由滑动保持部保持的检查片的测试图案中的光源,旋转保持 用于保持滑动保持部分以使得滑动保持部分能够在平面中旋转的部分;以及用于捕获通过检查片投射在屏幕上的图像的测量部分和待检查的投影透镜,并且对图像进行图像处理 。 测试图案具有测量区域,其中线状遮光部分以条纹排列,以达到预定的空间频率。 通过旋转旋转保持部,可以容易地评价遮光部在不同方向上延伸的测试图案的分辨率。 因此,本发明使得可以以低成本简单地评估透镜分辨率。
    • 10. 发明授权
    • Pneumatic radial tires
    • 气动子午线轮胎
    • US4436131A
    • 1984-03-13
    • US422912
    • 1982-09-24
    • Yutaka YamaguchiNobuyuki KoizumiTamio ArakiKoichi KojimaNobumasa Ikeda
    • Yutaka YamaguchiNobuyuki KoizumiTamio ArakiKoichi KojimaNobumasa Ikeda
    • B60C9/00B60C9/18B60C9/20B60C9/26
    • B60C9/18B60C9/26Y10S57/902Y10T152/1081
    • A pneumatic radial tire is disclosed, which comprises as a reinforcement a belt consisting of a first belt body composed of a single ply containing metal twisted cords arranged at an inclination angle of 5.degree.-25.degree. with respect to the equatorial plane of the tire and embedded in a coating rubber, both end portions in widthwise direction of which being folded on the remaining central base portion thereof, and a second belt body composed of at least one rubberized ply containing inextensible cords crossed with the cords in the base portion of the first belt body. In the first belt body, the coating rubber has a dynamic modulus of 160-400 kg/cm.sup.2 and a gauge of rubber interposed between the cords in the base portion and the cords in the folded portion is within a range of 1.3-4.5 times an average diameter of the cords and is not less than 2 times a gauge of the coating rubber located outside the cords in the base portion opposite to the folded portion.
    • 公开了一种充气子午线轮胎,其包括作为增强件的带,该带由第一带体组成,第一带体由相对于轮胎的赤道平面以5°-25°的倾斜角布置的金属扭绞线的单层组成, 嵌入涂层橡胶中,其宽度方向上的两个端部在其剩余的中心基部上折叠,第二带体由至少一个橡胶层组成,所述橡胶层包含不可延伸的帘线,所述帘布层在所述第一 皮带体。 在第一带体中,涂层橡胶的动态模量为160-400kg / cm 2,插入在基部中的帘线和折叠部分的帘线之间的橡胶规尺在1.3-4.5倍的范围内 帘线的平均直径并且不小于位于与折叠部分相对的基部中的帘线外侧的涂层橡胶的规格的2倍。