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    • 2. 发明授权
    • Semiconductor memory device with an adaptive output driver
    • 具有自适应输出驱动器的半导体存储器件
    • US06654310B2
    • 2003-11-25
    • US10197539
    • 2002-07-18
    • Ki-Jun Nam
    • Ki-Jun Nam
    • G11C800
    • G11C11/4096G11C7/1051
    • A semiconductor memory device employs an adaptive output driver to vary the strength of the output driver with the variation in external voltage and temperature. For this purpose, the semiconductor memory device with the adaptive output driver includes a shift register unit for producing a control signal so as to control the voltage level of the adaptive output driver, a data masking buffer for generating a reference voltage to be compared with the voltage level of the adaptive output driver, an adaptive output driver for varying its strength in response to the control signal provided from the shift register unit, and a comparator for comparing the reference voltage with the voltage level of the adaptive output driver to thereby generate a signal determining whether or not the shift register unit should perform a shift operation.
    • 半导体存储器件采用自适应输出驱动器,以随着外部电压和温度的变化来改变输出驱动器的强度。 为此,具有自适应输出驱动器的半导体存储器件包括用于产生控制信号以便控制自适应输出驱动器的电压电平的移位寄存器单元,用于产生参考电压的数据屏蔽缓冲器 自适应输出驱动器的电压电平,用于响应于从移位寄存器单元提供的控制信号改变其强度的自适应输出驱动器,以及用于将参考电压与自适应输出驱动器的电压电平进行比较的比较器,从而生成 确定移位寄存器单元是否应执行移位操作的信号。
    • 3. 发明授权
    • Optical system for automatic lens meter
    • 自动镜头光学系统
    • US07142293B2
    • 2006-11-28
    • US10960025
    • 2004-10-08
    • Ki-Jun NamSang-Jun Han
    • Ki-Jun NamSang-Jun Han
    • G01B9/00
    • G01M11/0228
    • An optical system for an automatic lens meter for measuring the refractive power of a lens to be examined. The optical system includes a light source for generating a measuring light beam, a convex collimator lens, disposed a predetermined focal distance from the light source, for collimating the measuring light beam, so that the light beam move in parallel, an expanding concave lens, disposed downstream of a lens to be examined, for expanding the measuring light beam with respect to an optic axis, a plural-apertures stop, disposed downstream of the expanding concave lens and formed with a plurality of apertures along the circumference thereof at predetermined angular intervals, for separating the measuring light beam into a plurality of measuring light beams, a prism lens in which a convex lens and a fixed prism assembly are integrally formed, disposed directly downstream of the plural-apertures stop, having the convex lens to focus the plural measuring light beams passed through the plural-apertures stop, and the same number of prisms as the number of the plural apertures to deflect the focused light beams so as to maintain the light beams in the separated beams, and an image forming lens, disposed downstream of the prism lens, for forming aperture images of the measuring light beams, passed through the prism lens, on a two-dimensional sensor array.
    • 一种用于测量被检眼镜的屈光度的自动透镜计的光学系统。 光学系统包括用于产生测量光束的光源,设置有与光源预定焦距的凸准直透镜,用于准直测量光束,使得光束平行移动,扩张凹透镜, 设置在待检查镜片的下游,用于相对于光轴扩展测量光束,设置在扩张凹透镜下游的多个孔止动件,并以预定的角度间隔沿其圆周形成有多个孔 ,用于将测量光束分离成多个测量光束,其中一个形成有凸透镜和固定棱镜组件的棱镜透镜,设置在多个孔径光阑的正下方,具有凸透镜以聚焦多个 测量通过多个孔的光束停止,以及与多个孔的数量相同数量的棱镜以使f偏转 将光束保持在分离的光束中;以及成像透镜,设置在棱镜透镜的下游,用于将通过棱镜透镜的测量光束的孔径图像形成在二维传感器上 数组。
    • 4. 发明申请
    • Optical system for automatic lens meter
    • US20060077378A1
    • 2006-04-13
    • US10960025
    • 2004-10-08
    • Ki-Jun NamSang-Jun Han
    • Ki-Jun NamSang-Jun Han
    • G01B9/00
    • G01M11/0228
    • An optical system for an automatic lens meter for measuring the refractive power of a lens to be examined. The optical system includes a light source for generating a measuring light beam, a convex collimator lens, disposed a predetermined focal distance from the light source, for collimating the measuring light beam, so that the light beam move in parallel, an expanding concave lens, disposed downstream of a lens to be examined, for expanding the measuring light beam with respect to an optic axis, a plural-apertures stop, disposed downstream of the expanding concave lens and formed with a plurality of apertures along the circumference thereof at predetermined angular intervals, for separating the measuring light beam into a plurality of measuring light beams, a prism lens in which a convex lens and a fixed prism assembly are integrally formed, disposed directly downstream of the plural-apertures stop, having the convex lens to focus the plural measuring light beams passed through the plural-apertures stop, and the same number of prisms as the number of the plural apertures to deflect the focused light beams so as to maintain the light beams in the separated beams, and an image forming lens, disposed downstream of the prism lens, for forming aperture images of the measuring light beams, passed through the prism lens, on a two-dimensional sensor array.