DEEP ULTRAVIOLET LED AND METHOD FOR PRODUCING THE SAME

    公开(公告)号:US20210036186A1

    公开(公告)日:2021-02-04

    申请号:US16964881

    申请日:2019-01-25

    摘要: A deep ultraviolet LED with a design wavelength λ, including a reflecting electrode layer (Au), a metal layer (Ni), a p-GaN contact layer, a p-block layer made of a p-AlGaN layer, an i-guide layer made of an AlN layer, a multi-quantum well layer, an n-AlGaN contact layer, a u-AlGaN layer, an AlN template, and a sapphire substrate that are arranged in this order from a side opposite to the sapphire substrate, in which the thickness of the p-block layer is 52 to 56 nm, a two-dimensional reflecting photonic crystal periodic structure having a plurality of voids is provided in a region from the interface between the metal layer and the p-GaN contact layer to a position not beyond the interface between the p-GaN contact layer and the p-block layer in the thickness direction of the p-GaN contact layer, the distance from an end face of each of the voids in the direction of the sapphire substrate to the interface between the multi-quantum well layer and the i-guide layer satisfies λ/2n1Deff (where λ is the design wavelength and n1Deff is the effective average refractive index of each film of the stacked structure from the end face of each void to the i-guide layer) in the perpendicular direction, the distance being in the range of 53 to 57 nm, the two-dimensional reflecting photonic crystal periodic structure has a photonic band gap that opens for TE polarized components, and provided that the period a of the two-dimensional reflecting photonic crystal periodic structure satisfies a Bragg condition with respect to light with the design wavelength λ, the order m of a formula of the Bragg condition: mλ/n2Deff=2a (where m is the order, λ is the design wavelength, n2Deff is the effective refractive index of two-dimensional photonic crystals, and a is the period of the two-dimensional photonic crystals) satisfies 2≤m≤4, and the radius of each void is R, R/a satisfies 0.30≤R/a≤0.40.

    Roll for rotary cutter and rotary cutter

    公开(公告)号:US10391663B2

    公开(公告)日:2019-08-27

    申请号:US15439016

    申请日:2017-02-22

    摘要: A cutter roll and an anvil roll, with which it is possible to control deformation in the axial direction, and a rotary cutter having the same. A roll 101, 210 for a rotary cutter includes: a barrel portion having a circumferential surface and a pair of end surfaces located respectively at opposite ends of the circumferential surface; a pair of first depressions 113, 213 having a ring shape or a cylindrical shape and located respectively at the pair of end surfaces of the barrel portion, the pair of first depressions each having a depth direction that is parallel to an axis of the barrel portion; a pair of first bearings 152, 252 located respectively in the pair of first depressions and being in contact with outer walls of the first depressions; and a pair of first bearing boxes 156 located on an outside of the pair of first depressions and having support portions 151b, 251b to be in contact with a support frame or a pressure mechanism, the pair of first bearing boxes supporting the respective bearings.

    High-density composite material
    5.
    发明授权
    High-density composite material 失效
    高密度复合材料

    公开(公告)号:US07304105B2

    公开(公告)日:2007-12-04

    申请号:US10490493

    申请日:2002-09-30

    IPC分类号: C08K3/10

    摘要: A composite material which comprises an elastomer or vulcanized rubber and particles of a high-density material, such as tungsten, evenly dispersed therein, wherein the contents of the elastomer or vulcanized rubber and the high-density particles are 35 to 50 vol. % and 50 to 65 vol. %, respectively, based on the whole composite material, and the high-density particles have a particle composition comprising 60 to 80 vol. % coarse particles having a particle diameter of 10 to 100 μm, 10 to 20 vol. % medium particles having a particle diameter of 3 to 6 μm, and 10 to 20 vol. % fine particles having a particle diameter of 1 to 2 μm, the spaces among the coarse particles being filled with the medium particles and fine particles. The composite material is excellent in flexibility and processability and is suitable for use as a radiation-shielding sheet material, weight member, vibration-damping material, balancing member, radiating material, and shot material.

    摘要翻译: 包含弹性体或硫化橡胶的复合材料以及均匀分散在其中的诸如钨的高密度材料的颗粒,其中弹性体或硫化橡胶和高密度颗粒的含量为35〜50体积%。 %和50至65体积% %,基于整个复合材料,高密度颗粒具有60至80体积%的颗粒组成。 粒径为10〜100μm的粗粒子,10〜20体积% 粒径为3〜6μm的中等粒径的微粒,10〜20体积% 粒径为1〜2μm的微细粒子,粗粒子之间的空隙填充有中等粒子和微粒。 复合材料的柔软性和加工性优异,适用于辐射屏蔽片材,重量件,减振材料,平衡构件,辐射材料和射出材料。

    Sub-nozzle in an air injection type weaving machine
    6.
    发明授权
    Sub-nozzle in an air injection type weaving machine 失效
    喷嘴型喷气式喷丝机

    公开(公告)号:US5649571A

    公开(公告)日:1997-07-22

    申请号:US495687

    申请日:1995-07-24

    IPC分类号: D03D47/30

    CPC分类号: D03D47/302 Y10S239/19

    摘要: A sub-nozzle in an air injection type weaving machine in which fluffing or the like caused by contact thereof with warp etc. does not occur, and for which its manufacture and control is facilitated. A sub-nozzle jetting a high-speed air flow for acceleration toward weft thrown from a main nozzle to between warps when they are raised and lowered to form shed opening comprises a holder connected to the side of a supply source of compressed air and a nozzle head connected to the holder, where at least the nozzle head is integrally formed by a high-strength glass material and occurrence of warp damage or wear of the nozzle head per se is restrained by the smoothness of its surface.

    摘要翻译: PCT No.PCT / JP94 / 02213 Sec。 371日期1995年7月24日 102(e)日期1995年7月24日PCT 1994年12月26日PCT PCT。 WO95 / 18253 PCT出版物 日期1995年7月6日在空气喷射式织造机中的副喷嘴,其中不发生由与翘曲等的接触引起的起毛等,并且其制造和控制变得容易。 喷射高速空气流的副喷嘴,当其被升降降低以形成梭口时,从主喷嘴向纬线向纬纱喷射加速,包括连接到压缩空气供给源侧的保持架和喷嘴 头部连接到保持器,其中至少喷嘴头由高强度玻璃材料一体形成,并且喷嘴头本身的翘曲损坏或磨损的发生受其表面的平滑度的限制。

    PTC planar heater and method for adjusting the resistance of the same
    10.
    发明授权
    PTC planar heater and method for adjusting the resistance of the same 失效
    PTC平面加热器及其调节电阻的方法

    公开(公告)号:US5804797A

    公开(公告)日:1998-09-08

    申请号:US522366

    申请日:1995-09-18

    IPC分类号: H01C7/02 H05B3/14 H05B1/02

    摘要: A PTC planar heater according to the present invention is produced by bonding one or a plurality of PTC ceramic sheets, each having a pair of electrodes formed on the surface thereof, to an insulator. The electrode pairs are electrically connected in parallel by lead wires. An insulating elastic layer covers the electrodes to prevent warpage, electrical leaks, and shorting. A thickness of the PTC ceramic sheets equal to or greater than 0.5 mm prevents warpage. Resistance is adjusted by cutting conductive paths in the electrodes or by connecting predetermined portions of the electrodes. Further, in a PTC planar unit according to the present invention, a PTC thermistor element having a pair of electrodes formed thereon is in direct contact with one side of an insulation substrate, and a insulation substrate is mounted to the other side thereof.

    摘要翻译: PCT No.PCT / JP95 / 00095 Sec。 371 1995年9月18日第 102(e)1995年9月18日PCT PCT 1995年1月27日PCT公布。 出版物WO95 / 20819 日期1995年8月3日根据本发明的PTC平面加热器是通过将一个或多个各自具有形成在其表面上的一对电极的PTC陶瓷片接合到绝缘体来制造的。 电极对通过引线并联电连接。 绝缘弹性层覆盖电极以防止翘曲,电气泄漏和短路。 PTC陶瓷片的厚度等于或大于0.5mm可防止翘曲。 通过切割电极中的导电路径或连接电极的预定部分来调节电阻。 此外,在根据本发明的PTC平面单元中,其上形成有一对电极的PTC热敏电阻元件与绝缘基板的一侧直接接触,并且绝缘基板安装在其另一侧。