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一、概述脊椎动物的晶状体(以牛眼为例)表观上透明,它不象一般晶体那么结实坚硬,但具有晶体的双折射现象,虽然它的双折射数值很小。F.A Bettelheim 教授认为:这是由于晶体中形式双折射和本征双折射符号相反。因此一般都显得很小。我们设计了仪器的读数装置,对20个完整的牛眼晶状体作了测量,测得△n 的数量级为10~(-6);和他人的估计值相符合。此外,我们还测定了不同含水量和△n 的
I. Overview Vertebrate lens (bovine eye, for example) is visually transparent, it is not as strong as the general hard crystal, but with the phenomenon of birefringence, although its birefringence values are small. F.A Bettelheim professor thinks: This is because the form of crystal birefringence and intrinsic birefringence opposite sign. So generally seem very small. We designed the reading device of the instrument to measure 20 intact bovine lenses and found that the value of Δn was on the order of 10 ~ (-6), in agreement with the estimates of others. In addition, we also measured different water content and △ n