摘要:
Providing an optical system having excellent optical performance, an imaging apparatus, and a method for forming an image by the optical system. The optical system includes, in order from an object, a first lens group G1 having negative refractive power, a second lens group G2 having positive refractive power, a third lens group G3 having negative refractive power, and a fourth lens group G4 having positive refractive power. At least one of the first lens group G1, the second lens group G2, the third lens group G3, and the fourth lens group G4 has at least one A lens satisfying given conditional expressions.
摘要:
Providing an optical system having excellent optical performance with sufficiently correcting spherical aberration and curvature of field, an imaging apparatus, and a method for forming an image by the optical system. The optical system includes a plurality of lens groups, at least one of the plurality of lens groups having an A lens that satisfies at least one of given conditional expressions.
摘要:
Providing an optical system having excellent optical performance with sufficiently correcting spherical aberration and curvature of field, an imaging apparatus, and a method for forming an image by the optical system. The optical system includes a plurality of lens groups, at least one of the plurality of lens groups having an A lens that satisfies at least one of given conditional expressions.
摘要:
Providing an optical system having excellent optical performance, an imaging apparatus, and a method for forming an image by the optical system. The optical system includes, in order from an object, a first lens group G1 having negative refractive power, a second lens group G2 having positive refractive power, a third lens group G3 having negative refractive power, and a fourth lens group G4 having positive refractive power. At least one of the first lens group G1, the second lens group G2, the third lens group G3, and the fourth lens group G4 has at least one A lens satisfying given conditional expressions.
摘要:
A substrate having a transparent conductive layer has a transparent conductive pattern that is not easily visually recognizable by a naked human eye on a transparent substrate and can be formed by a simple and efficient method. In the case where a transparent conductive pattern is formed on a transparent substrate, the pattern region does not include conductive regions covered with uniform transparent conductive films or a high-resistance region that is not covered with the transparent conductive film, the high-resistance region electrically insulating the conductive regions. Instead of the conductive regions or the high-resistance region, the inventors use a region having a structure including a mixture of a portion covered with the transparent conductive film and a portion not covered with the transparent conductive film, thereby solving the foregoing visual recognition issue.
摘要:
By forming a bone-compatible implant wherein a groove or hole has been formed in the surface of a base material made of titanium metal or a titanium alloy at its joint with a bone tissue and the groove or hole has on the inner surface thereof an oxide film formed by heating in an oxygen-containing atmosphere, apatite is allowed to deposit on the inner surface of the groove or hole easily. Thus, an implant is provided which can be attached to a bone within a relatively short period of time even without resorting to bone cement.
摘要:
A variable magnification optical system ZL has, in order from the object side, a first lens unit G1 with a positive refractive power, a second lens unit G2 with a negative refractive power, a third lens unit G3 with a positive refractive power, a fourth lens unit G4, and a fifth lens unit G5 with a positive refractive power, and is configured to satisfy conditions of the following expressions: 2.49
摘要:
Providing a zoom lens system that can excellently correct aberrations over entire range from a wide-angle end state W to a telephoto end state T in spite of having a high zoom ratio including, in order from an object, a first group G1 having positive power, a second group G2 having negative power, a third group G3 having positive power, a fourth group G4 having negative power, and a fifth group G5 having positive power. When zooming from the wide-angle end state W to the telephoto end state T, a distance between the first group G1 and the second group G2 increases, a distance between the second group G2 and the third group G3 decreases, a distance between the third group G3 and the fourth group G4 increases, and a distance between the fourth group G4 and the fifth group G5 decreases. Given conditions are satisfied.
摘要:
Embodiments of the invention provide a disk drive capable of reducing vibrations of a disk generated by an airflow produced as the disk rotates. In one embodiment, a disk drive comprises: a rotary magnetic disk, a base for housing the magnetic disk, a top cover for closing the disk in the base to form an enclosure, a circulating filter arranged externally of the magnetic disk to trap dust within the enclosure, and an airflow guide for guiding an airflow which flows out of the circulating filter more to the center side than to the outer edge portion of the magnetic disk. Further, a shut out portion is provided in the vicinity of the outer edge portion of the magnetic disk to shut out an airflow which flows out in the vicinity of the outer edge portion.
摘要:
A heat-shrinkable polyester type film has a dynamic friction coefficient of at least one face with one face of another film of μd≦0.27 and range R≦0.05 and a weight loss of less than 0.24 g/m2 after 10 reciprocation times with 400 g load using a color fastness rubbing tester comprising a friction element bearing a sand paper with #1000 particle diameter.
摘要翻译:热收缩聚酯型膜具有至少一个面的动摩擦系数,其中另一个泥浆膜的一面为<0.27,范围R <= 0.05,重量损失小于0.24g / m 2, / SUP>,使用具有#1000粒径的砂纸的摩擦元件的色牢度摩擦测试仪,使用400g负荷进行10次往复运动。