BK7 is a borosilicate crown glass that is used extensively for lenses, windows, and mirror substrates. It is relatively hard, does not scratch easily, and performs well in chemical tests. It also has excellent transmittance--as low as 350 nm.
Index of Refraction (@587.6 nm): 1.51680
Abbé Factor (vd): 64.17
Density (gm/cm3) 2.51
Coefficient of Linear Expansion
(-30o to +70o): 7.1 x 10-6/oC
Coefficient of Linear Expansion
(+20o to +300o): 8.3 x 10-6/oC
Transformation Temperature (oC): 557
Young’s Modulus (dynes/mm2): 8.20 x 109
Climate Resistance: 2
Stain Resistance: 0
Acid Resistance: 1.0
Alkali Resistance: 2.0
Phosphate Resistance: 2.3
Knoop Hardness: 610
Poisson’s Ratio: 0.206作者: ddd2008aoyun 时间: 2010-12-16 15:45
在zemax哪里能看到呢? 作者: helenlee2007 时间: 2010-12-17 10:51
在属性里面可以看到,切换不同的波长时可以查看折射率。