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球透镜     
相关语句
  ball lens
     And under identical conditions,comparing to two balls lens coupling, single ball lens coupling, cylinderlens coupling and cone lens coupling, the efficiency of tapered fibercoupling is higher and the structure is simpler.
     同时,在相同设置下对双球透镜耦合、球透镜耦合、圆柱透镜耦合以及圆锥透镜耦合进行了仿真分析,并与锥形光纤耦合进行比较,得出锥形光纤耦合效率高,结构简单的结论。
短句来源
     Research results indicate that when the single ball lens is used in the LD-ball lens-SMF system,the axial alignment tolerance is ±30 μm,the lateral alignment tolerance is ±1.0 μm and the tilting on the X-Y plane pivoting at the fiber tip is ±1.2°.
     结果表明:当采用单球透镜时,所带来的轴向偏差为±30μm,横向偏差为±1.0μm,沿着X-Y平面的轴向倾角偏差为±1.2°;
短句来源
     Second, in the process of developing elements, applied diffraction-refraction mixed elements (ball-lens + micro-optics elements)to light beam coupling so as to ensure the stability of performance parameter of optical devices, and made full use of ball lens symmetry to reduce the tuning freedom of elements .
     二.为了保证光器件的性能参数的稳定,在器件的研制过程中提出将折衍混合元件(球透镜加微光学元件)用于光束耦合,充分利用球透镜的对称性,减少了元件的调节自由度。
短句来源
  ball lenses
     and the optimal sphere temperature,the refractive index and the spectral transmissive index of the ball lenses which the diameter is 0.8mm are 1250℃、1.5190 and more than 90%.
     得到直径为0.8mm的球透镜最佳成球温度为1250℃、折射率为1.5190光谱透过率大于90%。
短句来源
     The coupling efficiencies of the ball lenses used in coupling of the laser diode(LD) and single mode fiber(SMF) were calculated and researched by a energy integration method.
     根据能量积分法计算了球透镜用于激光二极管(LD)与单模光纤(SMF)之间耦合的耦合效率,并对其进行研究。
短句来源
     Research on coupling efficiencies of ball lenses
     球透镜耦合效率研究
短句来源
     Testing results indicated that the refractive indexes of the optical glass and ball lenses were 1.5198 and 1.5190,respectively,and the maximum coupling efficiency was 62.5%.
     直径为0.8 mm的球透镜最大耦合效率为62.5%。
短句来源
     The sagging method was used to fabricate ball lenses according to the theory on which the transparent glass micro-sphere can be obtained because of freezing liquid due to the interfacial tension.
     依据在表面张力的作用下的液滴冷凝,得到透明玻璃微球理论[1],首次使用槽沉法来制备球透镜
短句来源
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  spherical lens
     Analysis of Spherical Lens Principle of Return Reflecting Fabric
     回归反光织物球透镜反光原理的探讨
短句来源
     The Light Reflecting Performance of the Spherical Lens Retroreflector
     球透镜逆反射器的反光性能
短句来源
     In this article, a systematic analysis is made about spherical lens principle of return reflecting fabric with the help of geometrical and analytic method.
     本文对回归反光织物中回归反光物体玻璃微珠的球透镜原理采用几何和解析两种方法进行了系统分析。
短句来源
     The conclusion has been spread to spherical lens retroreflection array. The basic idea of the spherical lens retroreflector and its key points of application have been proposed.
     并把此结论推广到球透镜逆反射阵列,提出球透镜逆反射器的基本概念及应用的要点。
短句来源
  sphere lens
     PREPARATION OF THE PLASTIC GRADIENT-INDEX SPHERE LENS
     塑料梯折球透镜研制
短句来源
     Using the theory of ray in gradient index medium the possibility of imaging for the Maxwell fisheye sphere lens to the object points with finite distance is studied on the basis of reference [1]. The formulas to calculate the image distance and the longitudinal and transverse spherical aberrations have been derived.
     本文在文献[1]的基础上用变折射率介质中的光线理论研究了Maxwell鱼眼球透镜对有限远物点成像的可能,导出了它对有限运物点的像距和纵、横向球差的计算公式。
短句来源
     in order to resolve this problem,a compound structure formed by the kind of sphere lens placed in smaller index homogeneous mediums is proposed so as to reduce the re-quirement for the difference of refractive index greatly on the premise of keeping smallest aberration.
     为解决此困难,本文提出将此类球透镜置于低折射率均匀介质内组成复合结构,可在保持最小像差的提前下,大幅度减小其对折射率的差值△n的要求。
短句来源
     The distribution of reflected light of return reflecting fabric under the condition of the sphere lens is given and the experimented verificatinons are made with a glass cylinder.
     在球透镜原理下,给出了回归反光织物反射光的分布曲线并进行了验证。
短句来源

 

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      ball lens
    Micro-ball lens array fabrication in photoresist using PTFE hydrophobic effect
          
    This paper presents a simple method for fabricating a micro-ball lens and its array.
          
    High contact angle between the melted photoresist pattern and PTFE generates the micro-ball lens and array.
          
    A thermal reflow process is then applied to melt these micro-column patterns into a micro-ball lens array.
          
    The achieved micro-ball lens array has a diameter of 98?μm fabricated using 80?μm diameter patterns.
          
    更多          
      ball lenses
    Spherical tips and ball lenses have been used for a variety of purposes in optical probes for biomedical applications.
          
      spherical lens
    Experimental, numerical, and theoretical investigations are made of a gas flow generated by a pulsed high-current discharge in an axisymmetric cavity bounded by a spherical lens adjacent to a flat plate.
          
    A microwave indoor experiment was also performed using a stepped index (six-layer) spherical lens and horn antenna.
          
    Performances of hyperbolical and spherical lens imaging systems at millimeter wavelengths
          
    Analysis of an extended hemi-spherical lens antenna at millimeter wavelengths
          
    An analysis of an extended hemi-spherical lens fed by a microstrip patch antenna is presented.
          
    更多          
      sphere lens
    Analysis of a sphere lens quasi-optical monopulse antenna/feed structure
          
    A novel sphere lens quasi-optical monopulse antenna/feed is proposed and analyzed using finite-difference time-domain (FDTD) method.
          
    A method of calculating the efficiency for coupling light power from a LED into an optical fibre by use of a sphere lens
          


    The structure of a fiber-optic transmission system is described. Some parametric computing formulae are derived with an optical fiber with spherical end used for out-of-focusing coupling, and by means of this, the laser-induced damage on fiber flat end face is eliminated in the case of inserting a pulsed YAG: Nd laser beam into the fiber.

    本文描述了光纤的光学传输系统的结构。导出了用端面球透镜离焦耦合时一些参数的计算公式,并用这种耦合方法消除了脉冲YAG:Nd激光注入光纤时在光纤平端面产生的损伤现象。

    It is of the key importance to choose the parameter s/r for the design of the light coupling from a laser diode into a multimode fiber with spheric end. This paper discusses a method by which the optimal radious of curvature of the spheric-lensed fiber roptim and the optimal distance from the endface of the fiber to the light source soptim can be rather easily found. In this method the analytic expressions of γmin and (y/r) γmin are derived because y/r is adopted as the variable, therefore, the parameter (s/r)optim...

    It is of the key importance to choose the parameter s/r for the design of the light coupling from a laser diode into a multimode fiber with spheric end. This paper discusses a method by which the optimal radious of curvature of the spheric-lensed fiber roptim and the optimal distance from the endface of the fiber to the light source soptim can be rather easily found. In this method the analytic expressions of γmin and (y/r) γmin are derived because y/r is adopted as the variable, therefore, the parameter (s/r)optim can be determined precisely.

    选取s/r,是光纤端面球透镜耦合设计的关键。本文主要讨论求最佳的光纤球面状端面曲率半径roptim和光纤端面到光源距离soptim的一种较为简便的方法。由于采用y/r作变数就可以给出(y/r)_(γmin)的解析表达式,所以可以把参数(s/f)_(optim)的确定做得很精确。

    Design and fabrication of 1.3nm InGaAsP/InP DH LED with a monolithic integral lens, which exhibits high-speed performance,have been presented.Dependences of operating characteristics, such as the coupled power, the far field radiation patterns and the cut-off frequency on the LED and fiber structure parameters, have been analyzed and applied to complete an optimal design. LED's coupled to graded fiber with 50μm core, 0.2NA were fabricated at the wavelength of 1.3μm. A significant improvement has been achieved...

    Design and fabrication of 1.3nm InGaAsP/InP DH LED with a monolithic integral lens, which exhibits high-speed performance,have been presented.Dependences of operating characteristics, such as the coupled power, the far field radiation patterns and the cut-off frequency on the LED and fiber structure parameters, have been analyzed and applied to complete an optimal design. LED's coupled to graded fiber with 50μm core, 0.2NA were fabricated at the wavelength of 1.3μm. A significant improvement has been achieved particularly in the cut-off frequency and the maximum value of 425MHz at 150mA has been realized.Remarkable improvement in the coupling efficiency is demonstrated.

    本文设计与制作了集成球透镜1.3μm InGaAsP/InP DH LED,并对集成透镜LED的频响特性,光强远场分布以及与光纤的耦合特性等方面进行了测试分析.研究结果表明,球透镜LED与标准光纤的耦合效率较之乎面型LED有显著提高,达7.5%,器件截止频率也比平面型LED提高的20%,最高截止带宽达425MHz.

     
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