摘要:
A hemispherical Luneberg dielectric lens including a hemispherical center layer having a hemispherical outer surface, and a plurality of hemispherical dome-shaped layers each having concentric hemispherical inner and outer surfaces, the outer surfaces of the center layer and dome-shaped layers having different diameters and the inner surfaces of said dome-shaped layers having different diameters. The center layer and dome-shaped layers are successively concentrically fitted into one another and integrated into a hemispherical shape. The center layer is a foam molding of ceramic-containing thermoplastic resin expanded beads, while each of said dome-shaped layers is a foam molding of thermoplastic resin expanded beads containing 0 to 80% by weight of a ceramic. The ceramic content per unit volume of the center and dome-shaped layers decreases from the center layer to the outermost dome-shaped layer, and the standard deviation of the apparent density of each of the center and dome-shaped layers is 0.07 g/cm3 or lower.
摘要翻译:一种半球形Luneberg介质透镜,包括具有半球形外表面的半球形中心层和多个具有同心半球形内表面和外表面的半球形圆顶形层,中心层和圆顶形层的外表面具有不同的直径和 所述圆顶形的层的内表面具有不同的直径。 中心层和圆顶形的层被相继地同心地装配在一起并整合为半球形。 中心层是含有陶瓷的热塑性树脂发泡珠的发泡成型体,而每个所述圆顶形层是含有0至80重量%陶瓷的热塑性树脂发泡珠的发泡成型体。 中心层和圆顶形层的单位体积的陶瓷含量从中心层到最外面的圆顶状层减少,中心圆顶形层的表观密度的标准偏差为0.07g / cm 3 或更低。
摘要:
A hemispherical Luneberg dielectric lens including a hemispherical center layer having a hemispherical outer surface, and a plurality of hemispherical dome-shaped layers each having concentric hemispherical inner and outer surfaces, the outer surfaces of the center layer and dome-shaped layers having different diameters and the inner surfaces of said dome-shaped layers having different diameters. The center layer and dome-shaped layers are successively concentrically fitted into one another and integrated into a hemispherical shape. The center layer is a foam molding of ceramic-containing thermoplastic resin expanded beads, while each of said dome-shaped layers is a foam molding of thermoplastic resin expanded beads containing 0 to 80% by weight of a ceramic. The ceramic content per unit volume of the center and dome-shaped layers decreases from the center layer to the outermost dome-shaped layer, and the standard deviation of the apparent density of each of the center and dome-shaped layers is 0.07 g/cm3 or lower
摘要翻译:一种半球形Luneberg介质透镜,包括具有半球形外表面的半球形中心层和多个具有同心半球形内表面和外表面的半球形圆顶形层,中心层和圆顶形层的外表面具有不同的直径和 所述圆顶形的层的内表面具有不同的直径。 中心层和圆顶形的层被相继地同心地装配在一起并整合为半球形。 中心层是含有陶瓷的热塑性树脂发泡珠的发泡成型体,而每个所述圆顶形层是含有0至80重量%陶瓷的热塑性树脂发泡珠的发泡成型体。 中心层和圆顶形层的单位体积的陶瓷含量从中心层到最外面的圆顶状层减少,中心圆顶形层的表观密度的标准偏差为0.07g / cm 3 或更低
摘要:
Provided is an image blur correction apparatus for correcting an image blur caused by a vibration by driving an optical element, including: a vibration detector for detecting the vibration; a diving mechanism for driving the optical element; a controller for controlling the driving mechanism based on an output of the vibration detector; and a posture detector for detecting a posture of the apparatus, in which the controller changes driving characteristic of the driving mechanism in accordance with an output of the posture detector. The present invention provides an image blur correction apparatus which can improve driving characteristic of a correction optical system in a hand vibration frequency domain irrespective of a direction in which a force of gravity is applied.
摘要:
A polycarbonate resin foamed molding having a density D of 0.6 g/cm3 or less and at least 30 (kg·cm/cm3)/(g/cm3) of a value E80/D obtained by dividing an amount of energy absorbed through 50% compression of the molding at 80° C. (E80 kg·cm/cm3) by the density of the molding. A shock absorber for a vehicle includes a core of the above molding, and a skin covering a surface of the core.
摘要翻译:密度D为0.6g / cm 3以下的聚碳酸酯树脂发泡成型体和通过将吸收的能量的量除以50%得到的值E80 / D的至少30(kg·cm / cm 3)/(g / cm 3) 在80℃下成型(E80kg·cm / cm 3)压缩成型体的密度。 用于车辆的减震器包括上述模制品的芯和覆盖芯的表面的皮肤。
摘要:
An axis adjustment device, which may adjust an optical axis mismatch of an optical device at a high precision, and may perform an axis adjustment operation, includes a holding member to hold an optical device, a support member to support the holding member so that the holding member moves within a facing surface, a first rotating member to hold the holding member and rotatably supported around a first point S1 formed at a surface facing the support member, and a second rotating member to hold the holding member and to be rotatably supported around a second point formed at the surface facing the support member. The holding member moves within the surface facing the support member due to a rotation of one of the first and second rotating members and in order to adjust a relative position in a direction orthogonal to an optical axis of the optical device.
摘要:
A lens barrel includes a first retaining member to retain a first driving unit, a second retaining member to retain a second driving unit, a fixing cylinder in which the first retaining member and the second retaining member are disposed adjacent to each other in an optical axis direction, and a cam cylinder disposed about an outer circumference of the fixing cylinder rotatable in a circumferential direction, and the first and the second retaining members are moveable in the fixing cylinder following a same trajectory according to a rotation of the cam cylinder.
摘要:
An image blur compensation unit and image blur compensation device that can be made smaller in size. Wedge prisms, which refract light that is guided to an imaging element after passing through a lens group, are disposed on the same plane perpendicular to a central axis, and are supported by rotatable prism support portions. In order for the wedge prisms to be spaced by a predetermined distance and face each other along the central axis in a space that is formed when being placed adjacent to each other, the prism support portion supports the wedge prism on one end side along the central axis, and the prism support portion supports the wedge prism on one end side along the central axis. In this manner, the prism support portions supporting the wedge prisms, which need to be disposed along the central axis so as to be spaced by a predetermined distance and face each other, are disposed on the same plane. Therefore, the central axis-direction thickness can be made thinner, and the device can be made smaller in size.
摘要:
A seed beads dispersing disperse system is obtained by dispersing olefin resin seed beads 1 with a specific tubular shape in an aqueous medium. Then, the olefin resin seed beads 1 are impregnated with styrene monomers and the styrene monomers are polymerized in the presence of a polymerization initiator by heating at a temperature in a specified range, to thereby obtain tubular thermoplastic resin composite beads. Expandable thermoplastic resin composite beads obtained by impregnating the thermoplastic resin composite beads with a blowing agent, expanded thermoplastic resin composite beads obtained by foaming and expanding the expandable thermoplastic resin composite beads, and a foamed molded article formed from the expanded thermoplastic resin composite beads by molding are also obtained.
摘要:
Polylactic acid resin expanded beads exhibiting excellent fusion bonding at the time of in-mold molding have such a crystal structure that gives a first time DSC curve when heated according to heat flux differential scanning calorimetry referenced in JIS K7122(1987) and a second time DSC curve when thereafter cooled and then again heated, the second time DSC curve having a fusion peak having a reference peak temperature and the first time DSC curve having at least one fusion peak with a peak temperature higher than the reference peak temperature and another at least one fusion peak with a peak temperature not lower temperature than the reference peak temperature.
摘要:
Foamed polyolefin resin beads having antistatic properties obtained by a process, which includes dispersing polyolefin resin beads into an aqueous medium, injecting a blowing agent, stirring and allowing the polyolefin resin beads to foam and expand. The polyolefin resin beads are composite resin beads comprising a core layer of a core layer polyolefin resin and a covering layer of a covering layer polyolefin resin.