双反射，也称反射多色性，是在单偏光下看到的一种光学现象。当转动台改变物体的方位时，有一些物体的切面可观察到亮度(反射率)的变化，此即为物体的“双反射(Bireflectance，Bireflection)”。
Also,according to requirements,appropriate symmetric splitting angle can be obtained by choosing different angle parameters.2. The design ideas of parallel beam splitting prism with large shear difference and the bireflective parallel distensible beam splitting prism are proposed.
本文的主要创新之处在于:(1)提出了Ⅰ、Ⅱ型双反射对称分束棱镜设计思想,该设计不仅能保证分束角的对称,而且可以拓宽分束角,并可以根据需要,选择不同的结构角参数以获得合适的对称分束角。
参考来源 - 双反射对称分束与平行分束偏光镜的设计·2,447,543篇论文数据，部分数据来源于NoteExpress
弹光效应双反射膜是一种各向异性的高反射膜。
Bireflectance film based on the photoelastic effect is a kind of anisotropic high reflection coating.
接下来，宽带双反射带通和导向孔箱体也有很好的效率。
Next in line, the wide-bandwidth dual-reflex and the ported enclosure exhibit very good efficiency as well.
讨论了双贴合无光焦度校正板放在次镜后的双反射球面系统。
A two-sphere system with a two-lens zero-power corrector placed behind the secondary mirror was discussed.
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