Zoom lens
    1.
    发明授权
    Zoom lens 失效
    变焦镜头

    公开(公告)号:US06404562B1

    公开(公告)日:2002-06-11

    申请号:US09573421

    申请日:2000-05-18

    IPC分类号: G02B1514

    CPC分类号: G02B15/161

    摘要: A zoom lens to form an image of an object with variable magnification, is provided with a first lens group having a positive refracting power, and a second lens group positioned closer to the image than the first lens group and having a negative refracting power. When the magnification is changed, a distance between the first lens group and the second lens group is changed. The first lens group comprises a 1-1 lens, a 1-2 lens and a 1-3 lens aligned in this order from the object. The zoom lens comprises at least two plastic lenses.

    摘要翻译: 以可变放大率形成对象的图像的变焦透镜设置有具有正折射率的第一透镜组和位于比第一透镜组更靠近图像并且具有负折射力的第二透镜组。 当放大率改变时,第一透镜组和第二透镜组之间的距离改变。 第一透镜组包括1-1个透镜,1-2个透镜和1-3个透镜,从该物体依次排列。 变焦透镜包括至少两个塑料透镜。

    Zoom lens having two lens groups
    2.
    发明授权
    Zoom lens having two lens groups 失效
    变焦镜头有两个镜头组

    公开(公告)号:US06185050B2

    公开(公告)日:2001-02-06

    申请号:US09276813

    申请日:1999-03-26

    IPC分类号: G02B1514

    CPC分类号: G02B15/161

    摘要: A zoom lens includes: a first lens group having positive refracting power; and a second lens group provided on an image side of the first lens group, having negative refracting power. The zoom lens has a variable power ratio of not less than 2.5 and a field angle of not less than 70° at a wide angle end, and a magnification of the zoom lens is changed by changing a distance between the first lens group and the second lens group, and further the following conditions are satisfied, 1.25≦Tw/Tt≦1.8 0.6≦fFc/fw≦0.9 where Tw represents a telephoto ratio at a wide angle end of the zoom lens, Tt represents a telephoto ratio at a telephoto end of the zoom lens, fw represents a focal length of the zoom lens at the wide angle end, and fFc represents a focal length of the first lens group.

    摘要翻译: 变焦镜头包括:具有正折射力的第一透镜组; 以及设置在第一透镜组的像侧上的具有负折射力的第二透镜组。 变焦透镜在广角端具有不小于2.5的可变功率比和不小于70°的场角,并且通过改变第一透镜组和第二透镜组之间的距离来改变变焦透镜的倍率 透镜组,并且还满足以下条件,其中Tw表示变焦透镜的广角端的远摄比,Tt表示变焦透镜的望远端的远摄比,fw表示变焦透镜的焦距 在广角端,fFc表示第一透镜组的焦距。

    Sulfur dioxide gas sensor
    3.
    发明授权
    Sulfur dioxide gas sensor 失效
    二氧化硫气体传感器

    公开(公告)号:US06200445B1

    公开(公告)日:2001-03-13

    申请号:US09198612

    申请日:1998-11-24

    IPC分类号: G01N27407

    CPC分类号: G01N27/4074 G01N27/4075

    摘要: A sulfur dioxide gas sensor having a high selectivity of SO2 gas, and an operability at a high temperature which comprises: a solid electrolyte having oxygen ion conductivity; a detecting electrode for measuring sulfur dioxide gas, electrically connected to at least a part of a surface of the solid electrolyte and containing glass and either gold or a gold alloy; and a basic electrode for measuring sulfur dioxide gas, electrically connected to at least a part of a surface of the solid electrolyte and containing Pt.

    摘要翻译: 具有高选择性的SO 2气体的二氧化硫气体传感器和高温下的可操作性,其包括:具有氧离子传导性的固体电解质; 用于测量二氧化硫气体的检测电极,电连接到固体电解质的表面的至少一部分并且包含玻璃和金或金合金; 以及用于测量二氧化硫气体的基本电极,与固体电解质的表面的至少一部分电连接并含有Pt。

    Process for producing infrared light transmitting optical fiber
    4.
    发明授权
    Process for producing infrared light transmitting optical fiber 失效
    制造红外光传输光纤的工艺

    公开(公告)号:US4504298A

    公开(公告)日:1985-03-12

    申请号:US542900

    申请日:1983-10-19

    摘要: A process is disclosed for producing an infrared light transmitting optical fiber by drawing a rod of single crystal or polycrystalline metal halide into a fiber through a die; also disclosed is a process for producing an infrared light transmitting optical fiber of step-index type by forming around a single crystal or polycrystalline fiber core, an intimate cladding crystal layer having a lower refractive index than the core by working in the temperature range that does not cause recrystallization of the core or cladding during working.

    摘要翻译: 公开了通过将模具中的单晶或多晶金属卤化物棒拉入纤维来制造红外光透射光纤的方法; 还公开了通过在单晶或多晶纤维芯周围形成折射率较低的折射率的紧密包层结晶层,通过在温度范围内进行工作来制造阶跃折射率型红外光透射光纤的方法 在加工过程中不会引起芯或包层的再结晶。

    Electric plug
    5.
    发明授权
    Electric plug 失效
    电插头

    公开(公告)号:US06309256B1

    公开(公告)日:2001-10-30

    申请号:US09575365

    申请日:2000-05-22

    IPC分类号: H01R1304

    摘要: An electric plug made of a synthetic resin material and capable of preventing tracking comprises a plug main body made of a synthetic resin material such as PVC, a pair of blades connected to electrical wires exposed at one end of a cable, and a groove formed in the front face portion of the plug main body at a position between the blades, so that the blades are prevented from becoming short-circuited due to the presence of dust or water-drops between the plug blades.

    摘要翻译: 由合成树脂材料制成并且能够防止跟踪的电插头包括由诸如PVC的合成树脂材料制成的插头主体,连接到在电缆的一端露出的电线的一对刀片和形成在 插头主体的前面部分在叶片之间的位置处,从而防止由于插头片之间存在灰尘或水滴而使叶片变得短路。

    Silver halide photographic material and a manufacturing method therefor
    7.
    发明授权
    Silver halide photographic material and a manufacturing method therefor 失效
    卤化银照相材料及其制备方法

    公开(公告)号:US5413900A

    公开(公告)日:1995-05-09

    申请号:US181411

    申请日:1994-01-14

    申请人: Minoru Yokota

    发明人: Minoru Yokota

    摘要: A manufacturing process for a light-sensitive material having thereon a magnetic recording layer, the magnetic recording layer having excellent optical transparency, a high magnetic recording performance (S/N ratio) and good graininess. After applying a coating solution on a support, the coating solution containing a magnetic substance, the support is dried while it is passed through an orienting magnetic field to orient the magnetic substance contained in the coating solution in a fixed direction.

    摘要翻译: 一种其上具有磁记录层的感光材料的制造方法,该磁记录层具有优异的光学透明度,高的磁记录性能(S / N比)和良好的颗粒度。 将涂布溶液涂布在载体上后,将含有磁性物质的涂布溶液通过定向磁场进行干燥,使涂布溶液中所含的磁性物质沿固定方向取向。

    Aluminum alloy electric conductor wire
    9.
    发明授权
    Aluminum alloy electric conductor wire 失效
    铝合金导线

    公开(公告)号:US4182640A

    公开(公告)日:1980-01-08

    申请号:US838762

    申请日:1977-10-03

    申请人: Minoru Yokota

    发明人: Minoru Yokota

    IPC分类号: C22C21/12 H01B1/02 C22C21/00

    CPC分类号: H01B1/023 C22C21/12

    摘要: A heat-resistant high strength aluminum alloy electric conductor wire which is an aluminum alloy consisting essentially of 0.01-0.5% copper, 0.01-0.5% zirconium, 0.05-1.0% iron and the balance of aluminum and impurities with a magnesium content limited not to exceed 0.1%, or an aluminum alloy electric conductor wire consisting of said alloy and one or more elements selected from a group consisting of 0.0005-0.05% yttrium, 0.005-0.5% beryllium, 0.0005-0.3% molybdenum, and 0.01-2.0% calcium.

    摘要翻译: 一种耐热高强度铝合金导线,它是一种铝合金,其基本上由铜,0.01-0.5%的锆,0.01-0.5%的铁,0.05-1.0%的铁组成,余量的铝和杂质的镁含量不限于 或超过0.1%的铝合金导电线,或由所述合金和选自0.0005-0.05%钇,0.005-0.5%铍,0.0005-0.3%钼和0.01-2.0%钙组成的组中的一种或多种元素组成的铝合金电导线 。

    Copying lens
    10.
    发明授权
    Copying lens 失效
    复制镜头

    公开(公告)号:US4173396A

    公开(公告)日:1979-11-06

    申请号:US907344

    申请日:1978-05-18

    申请人: Minoru Yokota

    发明人: Minoru Yokota

    CPC分类号: G02B13/24

    摘要: In a lens system of five groups of five lens elements in which a front group of two lens elements and a back group of two lens elements are symmetrically arranged on either side of a biconvex lens centrally located therebetween, a copying lens characterized in that the lens elements in sequence from the object comprise a first lens having a positive meniscus configuration with its convex surface directed toward an object, the second lens having a biconcave configuration, a third lens having a biconcovex configuration, a fourth lens having a biconcave configuration and a fifth lens having a positive meniscus configuration with its convex surface being directed toward the image and in which the condition0.2 f

    摘要翻译: 在五组五个透镜元件的透镜系统中,两个透镜元件的前组和两个透镜元件的背组对称地布置在位于它们之间的双凸透镜的两侧,复印透镜的特征在于,透镜 从物体依次排列的元件包括具有正弯月形结构的第一透镜,其凸表面指向物体,第二透镜具有双凹形结构,具有双凸透镜结构的第三透镜,具有双凹形结构的第四透镜和第五透镜 具有正弯月面构型的透镜,其凸表面指向图像,并且其中条件0.2f