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    • 24. 发明申请
    • Beam shaping optical device, optical head, and optical information medium drive device
    • 光束成形光学装置,光头,光信息媒体驱动装置
    • US20060114580A1
    • 2006-06-01
    • US10542361
    • 2004-07-06
    • Eishin MoriKeiichi MatsuzakiHidenori WadaHideki Hayashi
    • Eishin MoriKeiichi MatsuzakiHidenori WadaHideki Hayashi
    • G02B7/02
    • G02B7/028G02B19/0014G02B19/0052G11B7/1359G11B7/1376G11B7/13925G11B7/1398G11B2007/13727
    • An object of the present invention is to suppress the deterioration of a collimation quality resulting from a temperature change. A lens surface of a collimating lens closer to a light source is in contact with a retracted surface at one end surface of a barrel. On a projecting surface at an outer side of the one end surface of the barrel, grooves are formed at a plurality of positions symmetric with respect to an optical axis. An adhesive depositing in the grooves are applied to the outer circumferential surface of the collimating lens to fix the collimating lens in the barrel. Since the grooves are formed to be shallower than the retracted surface, the adhesive does not intrude onto the retracted surface. The barrel is pressed against a wall surface formed in the inner circumferential surface of a barrel holder main portion and having a V-shaped cross section by a leaf spring, thereby being held at a specified position in the barrel holder main portion. An amount of change in distance from a reference surface to a held position of the collimating lens per unit temperature is set to conform to a sum of an amount of change in the movement of the light source from the reference position per unit temperature and an amount of change of the back focus of the collimating lens per unit temperature.
    • 本发明的目的是抑制由温度变化引起的准直质量的劣化。 靠近光源的准直透镜的透镜表面与筒的一个端面处的缩回表面接触。 在筒的一端面的外侧的突出面上形成有相对于光轴对称的多个位置的槽。 将沉积在凹槽中的粘合剂施加到准直透镜的外周表面以将准直透镜固定在镜筒中。 由于凹槽形成为比缩回表面浅,所以粘合剂不会侵入缩回的表面。 筒被压在形成于筒保持器主体部的内周面的壁面上,并且通过片簧具有V形截面,从而被保持在筒保持器主体部的规定位置。 将每单位温度的准直透镜的基准面到保持位置的距离的变化量设定为与光单元的移动量相对于每单位温度的基准位置的变化量与量 每单位温度的准直透镜的后焦点的变化。
    • 25. 发明授权
    • Beam shaping optical device, optical head, and optical information medium drive unit
    • 光束成形光学器件,光学头和光学信息介质驱动单元
    • US07529043B2
    • 2009-05-05
    • US10542361
    • 2004-07-06
    • Eishin MoriKeiichi MatsuzakiHidenori WadaHideki Hayashi
    • Eishin MoriKeiichi MatsuzakiHidenori WadaHideki Hayashi
    • G02B7/02
    • G02B7/028G02B19/0014G02B19/0052G11B7/1359G11B7/1376G11B7/13925G11B7/1398G11B2007/13727
    • A lens surface of a collimating lens closer to a light source is in contact with a retracted surface at one end surface of a barrel. On a projecting surface at an outer side of the one end surface of the barrel, grooves are formed at a plurality of positions symmetric with respect to an optical axis. An adhesive deposited in the grooves is applied to an outer circumferential surface of the collimating lens to fix the collimating lens in the barrel. Since the grooves are formed to be shallower than the retracted surface, the adhesive does not intrude onto the retracted surface. The barrel is pressed against a wall surface formed in an inner circumferential surface of a barrel holder main portion and having a V-shaped cross section by a leaf spring, thereby being held at a specified position in the barrel holder main portion. An amount of change in distance from a reference surface to a held position of the collimating lens per unit temperature is set to conform to a sum of an amount of change in movement of the light source from the reference position per unit temperature and an amount of change of back focus of the collimating lens per unit temperature.
    • 靠近光源的准直透镜的透镜表面与筒的一个端面处的缩回表面接触。 在筒的一端面的外侧的突出面上形成有相对于光轴对称的多个位置的槽。 将沉积在凹槽中的粘合剂施加到准直透镜的外周表面,以将准直透镜固定在镜筒中。 由于凹槽形成为比缩回表面浅,所以粘合剂不会侵入缩回的表面。 筒被压在形成于筒保持器主体部的内周面的壁面上,并且通过片簧具有V形横截面,从而被保持在筒保持器主体部分中的指定位置。 将每单位温度的准直透镜的基准面到保持位置的距离的变化量设定为与光单元相对于每单位温度的基准位置的移动量的变化量和 每单位温度改变准直透镜的后焦距。
    • 29. 发明授权
    • Silicon carbide semiconductor device
    • 碳化硅半导体器件
    • US08766278B2
    • 2014-07-01
    • US13565388
    • 2012-08-02
    • Hideki Hayashi
    • Hideki Hayashi
    • H01L29/15H01L21/8238
    • H01L27/088H01L21/8213
    • First, second, fourth, and fifth impurity regions have a first conductivity type, and a third impurity region has a second conductivity type. The first to third impurity regions reach a first layer having the first conductivity type. The fourth and fifth impurity regions are provided on a second layer. First to fifth electrodes are provided on the first to fifth impurity regions, respectively. Electrical connection is established between the first and fifth electrodes, and between the third and fourth electrodes. A sixth electrode is provided on a gate insulating film covering a portion between the fourth and fifth impurity regions.
    • 第一,第二,第四和第五杂质区具有第一导电类型,第三杂质区具有第二导电类型。 第一至第三杂质区域到达具有第一导电类型的第一层。 第四和第五杂质区设置在第二层上。 第一至第五电极分别设置在第一至第五杂质区上。 在第一和第五电极之间以及第三和第四电极之间建立电连接。 第六电极设置在覆盖第四和第五杂质区域之间的部分的栅极绝缘膜上。