因此，由这种晶体构成的眼睛，可以用一种折射率在水中成像，而用另一种折射率在空气中成像。
With an aragonite eye, one index creates an image on the eye in water while the other works in air.
介绍了宽谱段傅里叶变换镜头中光学玻璃的折射率、色散变化对系统的成像质量的影响。
The effect induced by the increment of refraction index and dispersion of glass in the wide bands FT(Fourier Translate) lens were introduced.
该方法基于共轴球面光学系统的成像原理，通过读数显微镜对吸入待测液体后毛细管的焦点位置进行单一参数的测量，进而计算出待测液体的折射率。
The refractive index was obtained through measuring the focal position of a capillary filled with the liquid by a reading microscope, and doing a calculation with an analytic formula.
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