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    • 3. 发明申请
    • Subminiature imaging optical system
    • 超小型成像光学系统
    • US20080291553A1
    • 2008-11-27
    • US12068865
    • 2008-02-12
    • Tae Young KimYoung Gi Kim
    • Tae Young KimYoung Gi Kim
    • G02B9/34
    • G02B13/004G02B9/34
    • There is provided a subminiature imaging optical system including, sequentially from an object side to an image side: a first lens having positive refractive power; a second lens having negative refractive power and both sides concaved toward an image side; a third lens having positive refractive power and a meniscus shape with a convex image-side surface; and a fourth lens having positive refractive power. The first and second lenses have refractive power satisfying following condition 1, the second lens has a shape satisfying following condition 2, and the third and fourth lenses have refractive power satisfying following condition 3, 0.3
    • 提供了一种超小型成像光学系统,其从物体侧到像侧依次包括:具有正折射光焦度的第一透镜; 具有负折光力的第二透镜和朝向图像侧的两侧凹陷; 具有正折射力的第三透镜和具有凸形图像侧表面的弯月形状; 以及具有正折射光焦度的第四透镜。 第一透镜和第二透镜具有满足以下条件1的屈光力,第二透镜具有满足以下条件2的形状,并且第三透镜和第四透镜具有满足以下条件3的折射力,<?in-line-formula description =“In- 线公式“end =”lead“?> 0.3 <| f1 / f2 | <2.0条件1,<?in-line-formula description =”In-line Formulas“end =”tail“?> <?in-line- 公式描述=“内联公式”end =“lead”?> 0.2 <| R5 / f2 | << 4条件2,<?in-line-formula description =“内联公式”end =“tail”? > <?in-line-formula description =“In-line Formulas”end =“lead”?> 0 <| f3 / f4 | <10条件3,<?in-line-formula description =“In-line Formulas” end =“tail”?>其中f1是第一透镜的焦距,f2是第二透镜的焦距,f3是第三透镜的焦距,f4是第四透镜的焦距,R5 是第二透镜的图像侧表面的曲率半径。
    • 4. 发明授权
    • Electrocatalyst for fuel cells using support body resistant to carbon monoxide poisoning
    • 用于燃料电池的电催化剂,使用对一氧化碳中毒的支持体
    • US07432221B2
    • 2008-10-07
    • US10453136
    • 2003-06-03
    • Chang-Soo KimYoung-Gi KimWong-Yong LeeGu-Gon ParkTae-Hyun Yang
    • Chang-Soo KimYoung-Gi KimWong-Yong LeeGu-Gon ParkTae-Hyun Yang
    • B01J23/00B01J23/40B01J21/18
    • H01M4/925B01J21/18B01J23/40B01J23/56B01J23/89B01J35/10B01J35/1061H01M4/8605H01M4/921
    • Disclosed is an electrocatalyst for fuel cells, in which a porous carbon material including pores having a diameter smaller than a kinetic diameter of carbon monoxide is used as a support body and contact probability between an activated metal and carbon monoxide is decreased, thereby preventing fuel cell performance from being degraded by carbon monoxide. The electrocatalyst is obtained by adsorbing 10-80 parts by weight of an activated metal to 20-90 parts by weight of a porous support body, characterized in that the porous support body has a total surface area of 200-2,500 m2/g including an outer surface thereof and an inner surface of pores thereof, and has a plurality of pores penetrating into an interior of the support body with an average diameter of 2-15 nm and a total volume of 0.4-2.0 m3/g, and the activated metal is alloyed with 20-95 at % of platinum and 5-80 at % of one metal selected from among Ru, Sn, Os, Rh, Ir, Pd, V, Cr, Co, Ni, Fe and Mn. As for such an electrocatalyst, carbon monoxide does not fundamentally come in contact with the activated metal adsorbed to the inner surface of the pores of the support body, thereby minimizing degradation of fuel cell performance, thus overcoming fuel-feeding problems.
    • 公开了一种用于燃料电池的电极催化剂,其中使用包含直径小于一氧化碳的动力学直径的孔的多孔碳材料作为支撑体,活化金属与一氧化碳之间的接触概率降低,从而防止燃料电池 一氧化碳降解的性能。 通过将10-80重量份的活化金属吸附到20-90重量份的多孔支撑体中而获得电催化剂,其特征在于,所述多孔支撑体的总表面积为200-2,500μm2 包括其外表面和其孔的内表面,并且具有贯穿支撑体内部的多个孔,平均直径为2-15nm,总体积为0.4-2.0 活性金属与选自Ru,Sn,Os,Rh,Ir,Pd等的一种金属合金为20-95at%的铂和5-80at%的金属, V,Cr,Co,Ni,Fe和Mn。 对于这样的电催化剂,一氧化碳与吸附在支撑体的孔的内表面的活化金属基本上不接触,从而使燃料电池性能的劣化最小化,从而克服了燃料供给问题。
    • 7. 发明授权
    • Acoustic sensor apparatus and acoustic camera for using MEMS microphone array
    • 用于MEMS麦克风阵列的声学传感器和声学相机
    • US09525926B2
    • 2016-12-20
    • US14239036
    • 2011-08-19
    • Young-Gi KimKang-Hyun LeeJun-Goo Kang
    • Young-Gi KimKang-Hyun LeeJun-Goo Kang
    • H04R1/02H04R1/08H04R3/00H04R29/00G01H11/06
    • H04R1/083G01H11/06H04R1/028H04R3/005H04R29/005H04R2201/003
    • An acoustic camera for using a MEMS microphone array comprises: an acoustic sensor apparatus (30) comprising a print circuit board (20) on which the plural of MEMS microphone (10) are mounted, to send signals for the detected sound to a data collection unit (40); a data collection unit (40) connected to the acoustic sensor apparatus (30), which samples analog signals related to sound transmitted from the acoustic sensor apparatus (30) to transform into digital signals and transmit them to the central processing unit (40); a central processing unit (50) connected to the data collection unit (40), which calculates noise level based on digital signals related to sound transmitted from the data collection unit (40); and a display unit (60) which is connected to the central processing unit (50), which displays in color the noise level calculated at the central processing unit.
    • 一种用于使用MEMS麦克风阵列的声学相机包括:声学传感器设备(30),包括其上安装有多个MEMS麦克风(10)的打印电路板(20),用于将检测到的声音的信号发送到数据采集 单位(40); 连接到所述声学传感器装置的数据收集单元,其对与从所述声学传感器装置发送的声音相关的模拟信号进行采样以变换为数字信号并将其发送到所述中央处理单元)。 连接到数据收集单元(40)的中央处理单元(50),其基于与从数据收集单元(40)发送的声音相关的数字信号来计算噪声电平; 以及连接到中央处理单元(50)的显示单元(60),其以彩色显示在中央处理单元处计算出的噪声水平。
    • 10. 发明授权
    • Aluminum alloy for vehicle cylinder liner and method of manufacturing vehicle cylinder liner using the same
    • 汽车气缸套用铝合金及其制造方法
    • US08122941B2
    • 2012-02-28
    • US12631925
    • 2009-12-07
    • Young Gi KimSeok Jun KimHoon Mo Park
    • Young Gi KimSeok Jun KimHoon Mo Park
    • B22D11/10B22D11/07B22D46/00
    • B22D11/003B21J5/00B22D11/108C22C21/02
    • The present invention is directed to an aluminum alloy including aluminum as a basic component, silicon, copper, magnesium, iron, manganese, zinc, nickel and the like in a predetermined composition ratio, and a method of manufacturing of a vehicle cylinder liner having excellent wear resistance and heat resistance using the aluminum alloy.The method of manufacturing a vehicle cylinder liner includes the steps of: adding 50˜500 ppm of phosphorus (P) to the aluminum alloy while maintaining a temperature of the aluminum alloy at 700˜800° C. in a holding furnace, stabilizing the molten aluminum alloy including the phosphorus (P) for 30˜60 minutes to reform the molten aluminum alloy, and then continuous-casting the reformed molten aluminum alloy to form a round bar; hot-forging the round bar to forming a cylindrical liner; and machining an internal surface of the cylinder liner, with which a reciprocating piston comes into contact, to allow silicon particles to protrude.
    • 本发明涉及以规定的组成比包含作为碱性成分的铝,硅,铜,镁,铁,锰,锌,镍等的铝合金,以及具有优异的车辆气缸套的制造方法 使用铝合金的耐磨性和耐热性。 制造车辆气缸套的方法包括以下步骤:在保持炉中将铝合金的温度保持在700〜800℃,同时向铝合金中加入50〜500ppm的磷(P),使熔融 包括磷(P)的铝合金30〜60分钟,以改造熔融铝合金,然后连续铸造重整熔融铝合金以形成圆棒; 热锻圆棒以形成圆柱形衬套; 并且加工气缸套的内表面,往复运动活塞与其接触,以允许硅颗粒突出。