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    • 7. 发明授权
    • Solid state dye laser
    • 固态染料激光
    • US6141367A
    • 2000-10-31
    • US45307
    • 1998-03-20
    • Bunsen FanSadeg Mustafa Faris
    • Bunsen FanSadeg Mustafa Faris
    • H01S3/10H01S3/16H01S3/20
    • H01S3/10H01S3/168H01S3/1686
    • A solid state dye laser is adapted for use in a solid state dye laser assembly having a pump adapted to emit light at a first frequency and intensity. The solid state dye laser includes an elongated web of polymeric host material having a gain medium disposed therein, the gain medium being in a substantially solid state and doped with a fluorescent dye adapted to emit light within a predetermined spectral tuning range. The gain medium includes polymeric cholesteric liquid crystal disposed in a planar texture and frozen into a characteristic wavelength. The solid state dye laser, including the gain medium, is adapted for convenient movement relative to the pump.
    • 固态染料激光器适用于具有适于以第一频率和强度发光的泵的固态染料激光器组件。 固态染料激光器包括具有设置在其中的增益介质的聚合物主体材料的细长网,增益介质处于基本上固态并掺杂有适于在预定光谱调谐范围内发光的荧光染料。 增益介质包括以平面结构设置并冷冻成特征波长的聚合胆甾型液晶。 包括增益介质的固态染料激光器适于相对于泵的方便的移动。
    • 8. 发明授权
    • Polarizer devices and methods for making the same
    • 偏振器装置和制作相同的方法
    • US6072629A
    • 2000-06-06
    • US807020
    • 1997-02-26
    • Bunsen FanSadeg Mustafa FarisJohn Charles KralikHemasiri Vithana
    • Bunsen FanSadeg Mustafa FarisJohn Charles KralikHemasiri Vithana
    • G02B5/30
    • G02B5/3083
    • A light polarizer includes a plurality of discrete layers of birefringent film disposed in superposed relation on a transparent substrate. The planar components of the optic axes of each successive one of the discrete layers are angularly offset relative each preceding one of the discrete layers by a predetermined angle in one or either a positive or negative direction to provide the light polarizer with selectivity for either right-handed circularly polarized (RHCP) or left-handed circularly polarized (LHCP) incident light. In another aspect of the invention, the layers are of quarter-wave thickness having planar components orthogonally offset to provide selectivity for either right or left linearly polarized light. In a still further aspect of the invention, an optically isotropic layer of quarter-wave thickness is disposed between adjacent birefringent quarter-wave plates.
    • 光偏振器包括在透明基板上以重叠关系设置的多个离散的双折射膜层。 每个连续的一个离散层的光轴的平面分量相对于离散层中的每一个之前的一个离散层以一个或任一个正或负方向成角度地偏移预定的角度,以提供光偏振器, (RHCP)或左旋圆极化(LHCP)入射光。 在本发明的另一方面,这些层是四分之一波长的厚度,具有正交偏移的平面分量,以为右或左线偏振光提供选择性。 在本发明的又一方面中,在相邻的双折射四分之一波片之间设置四分之一波长厚度的光学各向同性层。
    • 10. 发明授权
    • Laser beam homogenizer
    • 激光束匀浆器
    • US4744615A
    • 1988-05-17
    • US823554
    • 1986-01-29
    • Bunsen FanRaymond E. TibbettsJanusz S. WilczynskiDavid F. Witman
    • Bunsen FanRaymond E. TibbettsJanusz S. WilczynskiDavid F. Witman
    • H01S3/101G02B5/02G02B5/08G02B27/09G03F7/20H01L21/027H01L21/30G02B6/00F21V7/04H01S3/10
    • G03F7/70583G02B27/09G02B27/0994G03F7/70075
    • A coherent laser beam having a possibly non-uniform spatial intensity distribution is transformed into an incoherent light beam having a substantially uniform spatial intensity distribution by homogenizing the laser beam with a light tunnel (a transparent light passageway having flat internally reflective side surfaces). It has been determined that when the cross-section of the tunnel is a polygon (as preferred) and the sides of the tunnel are all parallel to the axis of the tunnel (as preferred), the laser light at the exit of the light tunnel (or alternatively at any image plane with respect thereto) will have a substantially uniform intensity distribution and will be incoherent only when the aspect ratio of the tunnel (length divided by width) equals or exceeds the contangent of the input beam divergence angle .theta. and whenW.sub.min =L.sub.coh (R+(1+R.sup.2).sup.1/2)>2RL.sub.coh,where W.sub.min is the minimum required width for the light tunnel, L.sub.coh is the effective coherence length of the laser light being homogenized and R is the chosen aspect ratio for the light tunnel.
    • 具有可能不均匀的空间强度分布的相干激光束通过用光通道(具有平坦的内部反射侧表面的透明光通道)均化激光束而被转换成具有基本均匀的空间强度分布的非相干光束。 已经确定,当隧道的横截面是多边形(优选地)并且隧道的侧面都平行于隧道的轴线(优选地)时,光隧道出口处的激光 (或者相对于任何图像平面),将具有基本上均匀的强度分布,并且仅当隧道的长宽比(长度除以宽度)等于或超过输入光束发散角θ的范围时才会不相干 Wmin = Lcoh(R +(1 + R2)1/2)> 2RLcoh,其中Wmin是光通道的最小所需宽度,Lcoh是均匀化的激光的有效相干长度,R是所选择的宽高比 轻隧道。