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Borosilicate glass is a type of glass with silica and boron trioxide as the main ... It is also designated as 517642 glass after its 1.517 refractive index and 64.2 ...
In general, an index of refraction is a complex number with both a real and imaginary part, ... Pyrex (a borosilicate glass) 1.470 [27] Vegetable oil: 1.47 [28 ...
where n is the refractive index, λ is the wavelength, A, B, C, ... Borosilicate glass BK7: 1.5046: 0.00420 Hard crown glass K5: 1.5220: 0.00459 Barium crown glass BaK4:
The B in BK7 indicates that it is a borosilicate glass composition. BAK-4 barium crown glass (glass code 569560) has a higher index of refraction than BK7, and is used for prisms in high-end binoculars. In that application, it gives better image quality and a round exit pupil. An achromatic doublet, which combines crown glass and flint glass.
Optical glass refers to a quality of glass suitable for the manufacture of optical systems such as optical lenses, prisms or mirrors.Unlike window glass or crystal, whose formula is adapted to the desired aesthetic effect, optical glass contains additives designed to modify certain optical or mechanical properties of the glass: refractive index, dispersion, transmittance, thermal expansion and ...
A ray of light being refracted through a glass slab Refraction of a light ray. In optics, the refractive index (or refraction index) of an optical medium is the ratio of the apparent speed of light in the air or vacuum to the speed in the medium.
Refractive index variation for SF11 flint glass, BK7 borosilicate crown glass, and fused quartz, and calculation for two Abbe numbers for SF11. The Abbe number, [ 1 ] V d , {\displaystyle V_{\mathsf {d}}\ ,} of a material is defined as
K9 glass, sometimes referred to as K9 crystal, is a variety of optical borosilicate crown glass. The letter "K" is a reference to the German word for "crown" (Krone) and the number 9 refers to the lead oxide content of the glass (9%). K9 glass has high optical clarity, and is used in many contexts requiring this characteristic.