基于介电润湿液体棱镜阵列的光束调整器

Beam conditioner based on electrowetting liquid prism array

摘要:

为实现在三维空间上对不同光束(平行光、会聚光 、发散光)的调整,提出了一种基于介电润湿液体棱镜阵列的光束调整器。根据几何光学、 矩阵光学和介电润湿理论,推导出光学传递函数,分析了该光束调整 器的控光能力,讨论了工作电压对光束调整器调控性能的影响,并通过仿真模型的验证。结 果表明,该光束调 整器可以实现平行光的扩束、缩束、平移、会聚和发散；还可对发散光进行光束调整,改变 出射光的发散角度、 使其变成会聚光或平行光；同时,该光束调整器还可以实现对会聚光进行调节的作用,出射 光可以为会聚光、 平行光或发散光。当直径为5mm的平行光经光束调整器,其直径变化范围为3.08 mm,可左右平移 0~0.92 mm,其焦距f可在7.96 mm~∞(双层液 体界面为双凸形)范围内或在－∞~－25.99 mm(双层界面为双凹 形)范围内调节；对于发散角为20°的发散光,经过该光束调整器, 当出射光为发散光时,其发散角的变化范 围为0°~45.7°,当出射光为会聚光时,其会聚角的变化范围为0°~14.48°；对于会聚角为20°的会聚光,当出 射光为会聚光时,其会聚角的变化范围为0°~49.88°,而当出射光 为发散光时,其发散角的变化范围为0°~16.02°。

Abstract:

In order to realize beam adjustment of various beams (parallel,convergent,divergent) in three-dimensional space,a beam conditioner based on electrowetting liquid prism array is proposed .According to the theories of geometrical optics,matrix optics and electrowetting,the optical transfer function is derived ,the adjustment range of the beam conditioner for different beams is calculated,and the influence of working volt age on the light control performance of the beam conditioner is discussed.The results show that the beam conditioner can ex pand,contract,translate,converge and diverge the parallel light.It can also adjust the beam of divergent light,change the divergence angle of the emitted light, and make it into convergent or parallel light.At the same time,the beam conditio ner can also adjust the converging light, and the outgoing light can be converging light,parallel light or diverging ligh t.When the parallel light with a diameter of 5mm passes through the beam conditioner,its diameter varies from 3.08mm to 6.92mm,and it can be shifted from left to right by 0mm to 0.92mm,and its focal length f can be adjusted in the range of 7.96mm to ∞ (double convex liquid interface) or －∞~25.99mm (double concave double interface);For divergent lig ht with a divergence angle of 20°, through the beam adjuster,when the outgoing light is divergent light,its diverge nce angle varies from 0° to 45.7°,and when the outgoing light is convergent light,its convergence angle varies from 0° to 14.48°;For converging light with a converging angle of 20°,the variation range of the converging angle is 0°~49.88° when the outgoing light is converging light,and the variation range of the d iverging angle is 0°~16.02° when the outgoing light is diverging light.