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44 条记录 (耗时 0.05 秒)

    Ferro-electric azimuth rotator
    36.
    发明授权
    Ferro-electric azimuth rotator 有权
    铁电方位旋转器

    公开(公告)号：US06700694B2

    公开(公告)日：2004-03-02

    申请号：US10164866

    申请日：2002-08-14

    申请人： Yingyin Zou ,  Feiling Wang ,  Jingwen Zhang

    发明人： Yingyin Zou ,  Feiling Wang ,  Jingwen Zhang

    IPC分类号： G02F109

    CPC分类号： G02F1/0555 ,  G02F1/0136 ,  G02F1/21 ,  G02F2001/212 ,  G02F2202/40 ,  G02F2203/055 ,  G02F2203/48

    摘要： An electrically controllable azimuth optical rotator (10) includes a first quarterwave plate (16) for receiving a first beam of electromagnetic energy (22) having a first arbitrary polarization state, and outputting a second beam (122) in response to the first quarterwave plate (16). An electric voltage controlled ferro-electric variable phase retarder (20) aligned at approximately 45 degrees to the first quarterwave plate (16) receives the second beam 122 and provides a third beam 38 in response to the retarder (20). The electric voltage controlled ferro-electric variable phase retarder (20) is characterized by a phase shift of &phgr;=2&agr;, where &agr; is a desired angle of rotation of the first arbitrary polarization state. To provide a voltage-controlled rotation, a second quarterwave plate (18) is aligned either parallel or perpendicular to the first quarterwave plate (16) for receiving the third beam (38) and outputting a fourth beam (46) in response to the retarder (20). As a result, the fourth beam (46) has a polarization state similar to the first arbitrary polarization state but rotated by &agr;.

    摘要翻译： 电可控方位光旋转器（10）包括用于接收具有第一任意偏振状态的第一电磁能束（22）的第一四分之一波片（16），并响应于第一四分之一波片输出第二光束（122） （16）。 与第一四分之一波片（16）大致45度对准的电压控制铁电可变相位延迟器（20）接收第二光束122并响应于延迟器（20）提供第三光束38。 电压控制铁电可变相位延迟器（20）的特征在于phi = 2alpha的相移，其中α是第一任意偏振态的期望的旋转角。 为了提供电压控制的旋转，第二四分之一波片（18）被平行或垂直于第一四分之一波片（16）对准，用于接收第三波束（38）并响应于延迟器输出第四波束（46） （20）。 结果，第四光束（46）具有与第一任意偏振态类似的旋转α的极化状态。

    Thin film electro-optic beam steering device
    37.
    发明授权
    Thin film electro-optic beam steering device 失效
    薄膜电光束转向装置

    公开(公告)号：US06317251B1

    公开(公告)日：2001-11-13

    申请号：US09362208

    申请日：1999-07-28

    申请人： Feiling Wang

    发明人： Feiling Wang

    IPC分类号： G02F129

    CPC分类号： G02F1/292 ,  G02F2001/213

    摘要： A light beam deflector comprising a modified asymmetric Fabry-Perot (Gires-Tournois) etalon having a back reflecting and electrically conducting mirror and a front partially transmitting mirror spaced apart by an electro-optic material, there also being a transparent sheet resistor between the electro-optic material and the front mirror. The invention further comprises a pair of electrodes contacting two generally parallel edges of the transparent sheet resistor so that if different voltages are applied between the electrodes with respect to the back conducting mirror, a front to back electric field which varies in a linear manner from one electrode to the other will be produced. By utilizing an electro-optic material with either a linear longitudinal electro-optic effect or one having a linearized quadratic electro-optic effect, a linear variation of refractive index in the material will be produced between the electrodes, further resulting in a linear phase shift across a light beam impinging on the front and undergoing multiple reflections inside the electro-optic material and still further resulting in an overall deflection of the reflected beam.

    摘要翻译： 一种光束偏转器，包括具有背反射和导电反射镜的修改的不对称法布里 - 珀罗（Gires-Tournois）标准具和由电光材料隔开的前部部分透射镜，在电极之间还具有透明片状电阻器 - 光学材料和前视镜。 本发明还包括一对电极，其接触透明薄片电阻器的两个大致平行的边缘，使得如果在电极之间相对于后导电反射镜施加不同的电压，则以从线性方式与一个线性方式变化的前后电场 将生产电极到另一个。 通过利用具有线性纵向电光效应的电光材料或具有线性二次电光效应的电光材料，将在电极之间产生材料中折射率的线性变化，进一步导致线性相移 穿过照射在前面的光束并且在电光材料内部经历多次反射，并且还进一步导致反射光束的整体偏转。