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    • 1. 发明申请
    • Scanning device including plastic high-numerical aperture objective
    • 扫描装置包括塑料高数值孔径物镜
    • US20040120053A1
    • 2004-06-24
    • US10475380
    • 2003-10-21
    • Bernardus Hendrikus Wilhelmus Hendriks
    • G02B003/02G02B013/18
    • G11B7/1374G11B7/13922G11B7/22
    • An optical scanning device for scanning an information layer (104) of an optical record carrier (102) includes a radiation source (110) for generating a radiation beam (108) and a high-NA objective system (118) for converging the radiation beam on the information layer. The objective system includes a first lens (116) and a second lens (117). The first lens and the second lens are made of plastic. The signs of the temperature-dependence of the spherical aberration of the first and second lens are different and the magnitudes of the temperature-dependence of the spherical aberration of the two lenses is substantially equal such that the temperature-dependence of the spherical aberration of the objective system as a whole is reduced to less than 30 mnull OPDrms for a temperature change of 30 K.
    • 用于扫描光学记录载体(102)的信息层(104)的光学扫描装置包括用于产生辐射束(108)的辐射源(110)和用于会聚辐射束的高NA物镜系统(118) 在信息层上。 物镜系统包括第一透镜(116)和第二透镜(117)。 第一透镜和第二透镜由塑料制成。 第一透镜和第二透镜的球面像差的温度依赖性的迹象是不同的,并且两个透镜的球面像差的温度依赖性的大小基本相等,使得球面像差的温度依赖性 客观系统作为一个整体减少到小于30毫升λ的温度变化为30 K.
    • 2. 发明申请
    • Optical recording/reproducing apparatus
    • 光记录/重放装置
    • US20040061951A1
    • 2004-04-01
    • US10676973
    • 2003-09-30
    • Ikuo NakanoEiji Yamada
    • G02B003/02G02B013/18
    • G11B7/13925G11B7/1374G11B7/1376G11B2007/0013G11B2007/13727
    • In a spherical-aberration correcting mechanism which electrically drives and changes the lens group gap of two groups of lenses so as to correct spherical aberration, in order to reduce the power consumption thereof, the optical recording/reproducing apparatus of the present invention is arranged so that, upon recording or reproducing a recording medium having a plurality of recording layers, supposing that the gap of the lens groups at the time of forming a converged light spot on the first recording layer is DIS(1), the applied current to the spherical-aberration correcting mechanism is i1, the gap of the lens groups at the time of forming a converged light spot on the N-th layer (the farthest layer from the surface of the recording medium) is DIS(N) and the applied current to the spherical-aberration correction mechanism is i2, nulli1nullnullnulli2null is satisfied, and the neutral point of the spherical-aberration correcting mechanism is set at a position satisfying the following expression: lens group gap dst(3)null((DIS(1)nullDIS(N))/2.
    • 在电驱动并改变两组透镜的透镜组间隙以校正球面像差的球面像差校正机构中,为了降低其功率消耗,本发明的光记录/再现装置被布置为 在记录或再现具有多个记录层的记录介质时,假设在第一记录层上形成会聚光点时的透镜组的间隙为DIS(1),则施加到球面的电流 补偿校正机构是i1,在形成第N层(距离记录介质表面的最远层)处的会聚光点时的透镜组的间隙为DIS(N),施加的电流为 球面像差校正机构为i2,| i1 | = | i2 | 并且将球面像差校正机构的中性点设定在满足以下表达式的位置:透镜组间隙dst(3)=((DIS(1)+ DIS(N))/ 2。
    • 3. 发明申请
    • Light collimating system
    • 光准直系统
    • US20040061950A1
    • 2004-04-01
    • US10262198
    • 2002-09-30
    • Shih-Chou ChenChung-Kuang ShiehChih-Han Fang
    • G02B027/30G02B003/02G02B013/18
    • G02B6/0023G02B6/0031G02B6/0036G02B6/0038G02B6/0046G02B6/0068G02B27/30
    • A light collimating system, comprising a transparent substrate, a plurality of conic elements and a screen. Each of the conic elements has a relatively narrow light incident side to which the screen is attached and a relatively wide light emitting side attached to the transparent substrate. Each of the conic elements has several straight or curved segments which are arranged to form a truncated cone with an opening angle that decreases towards the light emitting side. The screen has a plurality of transmission areas covered by the light incident sides of the conic elements. Outside the transmission areas, incoming light is reflected from the screen. Diffuse light entering the conic elements through the transmission areas of the screen is collimated by refraction and total reflection at peripheral surfaces of the conic elements, resulting in a light bundle of narrow angular intensity distribution emanating from the transparent substrate.
    • 一种光准直系统,包括透明基板,多个圆锥元件和屏幕。 每个圆锥元件具有相对窄的光入射侧,屏幕附接到该入射侧,并且相对宽的发光侧附着到透明基板。 每个圆锥元件具有多个直的或弯曲的部分,其被布置成形成具有朝向发光侧减小的开口角度的截头圆锥体。 屏幕具有由圆锥元件的光入射侧覆盖的多个透射区域。 在传输区域外,入射光从屏幕反射。 通过屏幕的透射区域进入圆锥元件的漫射光通过在圆锥元件的外围表面处的折射和全反射而被准直,导致从透明基底发出的窄的角强度分布的光束。
    • 4. 发明申请
    • Low-order aberration correction using articulated optical element
    • 使用铰接式光学元件的低阶像差校正
    • US20030206350A1
    • 2003-11-06
    • US10139969
    • 2002-05-06
    • Robert W. ByrenLacy G. CookWilliam S. Griffin
    • G02B027/00G02B003/02G02B013/18
    • G02B26/06
    • A system (200) for effecting low-order aberration correction of a beam of electromagnetic energy. The inventive system (200) includes a first mechanism (220), including at least one articulated optical element (222), for receiving and correcting the beam; a second mechanism (270) for generating a signal indicative of the aberrations to be corrected; and a third mechanism (226), responsive to the second mechanism (270), for adjusting the position of the optical element (222) to generate an output beam that is at least partially compensated with respect to the aberrations. In the preferred embodiment, the first mechanism (220) is a telescope comprising a fixed primary lens or mirror (224) and an articulated secondary lens or mirror (222). The second mechanism (270) includes a wavefront error sensor for detecting aberrations in the received beam. The third mechanism includes a processor (320) responsive to the second mechanism (270) for providing a correction signal, and six linear actuator struts (226) arranged in a non-redundant hexapod configuration to move the secondary lens or mirror (222) in at least five degrees-of-freedom in response to the correction signal.
    • 一种用于实现电磁能束的低阶像差校正的系统(200)。 本发明的系统(200)包括第一机构(220),其包括至少一个铰接的光学元件(222),用于接收和校正光束; 用于产生指示要校正的像差的信号的第二机构(270); 以及响应于所述第二机构(270)的第三机构(226),用于调整所述光学元件(222)的位置以产生相对于所述像差至少部分地补偿的输出光束。 在优选实施例中,第一机构(220)是包括固定的主透镜或反射镜(224)和铰接的次要透镜或反射镜(222)的望远镜。 第二机构(270)包括用于检测接收波束中的像差的波前误差传感器。 第三机构包括响应于第二机构(270)提供校正信号的处理器(320)和布置成非冗余六足配置的六个线性致动器支柱(226),以将副透镜或反射镜(222)移动到 响应于校正信号至少五个自由度。
    • 9. 发明申请
    • Facial contact lens system for laser diode
    • 用于激光二极管的面部隐形眼镜系统
    • US20030007257A1
    • 2003-01-09
    • US09900722
    • 2001-07-06
    • Bernard W. Bell JR.Ian R. RedmondMasud Mansuripur
    • G02B013/18G02B027/10G02B003/02
    • H01S5/0267H01S5/005H01S5/02252
    • A beam shaper lens or other optic is positioned with respect to a laser diode or other laser emitter in such a way as to eliminate an air gap, or other low-index region, between the emitter and the beam shaper optic. In one embodiment, a planar emitter is in direct face-to-face contact with a planar surface of a beam shaper lens. The beam, as it exits the laser source, directly enters the lens or another relatively high-index medium, compared to the index of air. By reducing the number of interfaces which the beam passes through and/or the difference in index across such interfaces, beam shaping can be achieved while reducing or eliminating interfacial reflections, refractions, or diffractions.
    • 光束整形透镜或其他光学器件相对于激光二极管或其它激光发射器被定位成消除发射器和光束整形器光学器件之间的气隙或其它低折射率区域。 在一个实施例中,平面发射器与光束整形透镜的平坦表面直接面对面接触。 与空气指数相比,光束离开激光源时直接进入透镜或另一种相对高折射率的介质。 通过减少光束通过的界面数和/或这些界面上的折射率差异,可以在减少或消除界面反射,折射或衍射的同时实现光束整形。