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    • 3. 发明授权
    • Imaging lens
    • 成像镜头
    • US07295383B2
    • 2007-11-13
    • US11580422
    • 2006-10-12
    • Tomohiro Saito
    • Tomohiro Saito
    • G02B13/18G02B9/00
    • G02B13/0035G02B9/12
    • It is to provide an imaging lens that maintains optical performance and achieves reduction in size and weight. The imaging lens comprises, in order from an object side towards an image surface side, a first lens which is a meniscus lens having a positive power whose convex surface faces the object side, a diaphragm, a second lens which is a meniscus lens having a positive power whose convex surface faces the image surface side, and a third lens which is a biconcave lens having a negative power, wherein the following conditions are to be satisfied; 1.3≧L/fl≧1, 0.8≧f1/fl≧0.6, 0.12≧f1/f2>0, −0.1≧f1/f3≧−0.25 (where, L: entire length of the lens system [distance from the surface of the object side of the first lens to the image taking surface [air reduced length]], fl: focal distance of the entire lens system, f1: focal distance of the first lens, f2: focal distance of the second lens, and f3: focal distance of the third lens).
    • 它是提供保持光学性能并实现尺寸和重量的减小的成像透镜。 成像透镜从物体侧朝向图像面侧依次包括作为其凸面朝向物体侧的正光焦度的弯月形透镜的第一透镜,隔膜,作为弯月形透镜的第二透镜,具有 凸面朝向图像面侧的正电力以及具有负电力的双凹透镜的第三透镜,其中满足以下条件; 1.3> = L / fl> = 1,0.8> = f 1 / f 1 = 0.6,0.12> = f 1 / f 2 > 0,-0.1> = f 1 / f 3 3 / / SUB >> = - 0.25(其中,L:透镜系统的整个长度[距物体表面的距离 第一透镜到图像拍摄表面[空气减小长度]],fl:整个透镜系统的焦距f 1 :第一透镜的焦距,f 2 < SUB>:第二透镜的焦距和f 3 3:第三透镜的焦距)。
    • 9. 发明授权
    • CDMA communications system using multiple spreading sequences
    • CDMA通信系统使用多个扩展序列
    • US07245650B2
    • 2007-07-17
    • US10471671
    • 2002-03-07
    • Noriyoshi KuroyanagiNaoki SuehiroSatoru OzawaMitsuhiro TomitaKohei OtakeMasakazu Takahashi
    • Noriyoshi KuroyanagiNaoki SuehiroSatoru OzawaMitsuhiro TomitaKohei OtakeMasakazu Takahashi
    • H04B1/00
    • H04J13/00H04J13/10
    • This invention provides techniques for a CDMA system having high spectrum efficiency with low transmit power. Each transmitter comprises means of selecting some core-sequences out of multiple sequences to make them convey plural data, means of producing an enveloped selected sequence with such a method as to arrange as guard sequences to a repeated sequence made by repeating each of the selected core-sequences, means of modulating a user specific orthogonal carrier frequency by the enveloped selected sequence to produce a transmit-symbol, and means of transmitting the transmit-symbols. And a receiver comprises means of demodulating a receive-symbol with one of the user specific carrier frequencies to produce a base-band receive-symbol, means of separating respective components corresponding to the sequences selected by the user, by analyzing the base-band receive-symbol with a matrix composed of a channel response vector from the user to the receiver to detect plural data on the components.
    • 本发明提供了具有低发射功率的高频谱效率的CDMA系统的技术。 每个发射机包括从多个序列中选择一些核心序列以使它们传送多个数据的装置,用于产生包络的所选择的序列的装置,其方法是将重复的序列排列成通过重复每个所选择的核心 序列,通过包络的所选序列调制用户特定的正交载波频率以产生发射符号的装置,以及发送发射符号的装置。 并且接收机包括用用户特定载波频率之一解调接收符号以产生基带接收符号的装置,通过分析基带接收,分离对应于用户选择的序列的各个分量的装置 符号,其具有由从用户到接收器的信道响应向量组成的矩阵,以检测组件上的多个数据。
    • 10. 发明授权
    • Polarization phase difference plate
    • 极化相差板
    • US07230762B1
    • 2007-06-12
    • US11361639
    • 2006-02-24
    • Takayoshi Suganuma
    • Takayoshi Suganuma
    • G02B5/18
    • G02B5/1871
    • The object of the present invention is to provide an excellent-quality polarization phase difference plate that enables, by a simple structure: decrease in light loss and in oscillation of the intensity of the transmitting emission light through effectively suppressing Fresnel reflection in the polarization phase difference plate; improvements in the optical property, cut in the cost; and decrease in the manufacture inferior. In the polarization phase difference plate, cross-sectional shape of the convex part is formed in a taper shape from the bottom part thereof towards the top part; a flat part is formed at least between the convex parts being adjacent to each other; and the period of the diffraction grating is formed in a size that is equal to or smaller than the wavelength of light to be used.
    • 本发明的目的是提供一种优质的极化相位差板,其通过简单的结构可以实现:通过有效地抑制偏振相位差中的菲涅尔反射,减少光损失和发射发射光强度的振荡 盘子; 改善光学性能,降低成本; 并减少制造劣质。 在极化相位差板中,凸部的截面形状从其底部向顶部形成为锥形, 至少在彼此相邻的凸部之间形成平坦部分; 并且衍射光栅的周期形成为等于或小于所使用的光的波长的尺寸。