WebAug 2, 2024 · BK7 is an OK material to use for most applications. I would use it for standard applications in the visible spectrum. For off-the-shelf optics, the cost is often 20-30% less than for UV grade fused silica. This adds up when considering buying a large set of optics. Share Cite Improve this answer Follow answered Mar 30, 2024 at 0:44 Ru887321 256 1 5 WebThe first lens (left side) is BK7 glass with refractive index np; = 1.5214 and center thicknesses of CT; = 2.5 mm. ... (in this case, air): I = cnE_0^2 where: c is the speed of light in the medium (3 x 10^8 m/s in air) n is the refractive index of the medium (1.00 in air) E_0 is the amplitude of the electric field (V/m). Therefore, the ...
ECE318S 2016 FUNDAMENTALS OF OPTICS.pdf - Course Hero
WebThe refractive index can be measured with the resolution (6 digits below the decimal point) necessary for grasping the optical performance, and the Abbe number can be calculated. … WebTable 2 shows spectral lines and designated letters for them. The refractive indices of optical glasses are given at these wavelengths with the N-BK7 as an example. The refractive index at a wavelength other than the spectral lines can be calculated from a dispersion formula. SCHOTT uses Sellmeier dispersion formula: (3) chan yew foon
Crown glass (optics) - Wikipedia
WebIts refractive index is slightly smaller than BK7, but it provides internal quality equivalent to BK7, and is used in various optics as in the case of BK7. Especially, this is oftenthe material of choice for use with wavelengths other than the visible range. Its low thermal expansion also makes it useful for substrates of highprecision mirrors ... WebData Sheet SCHOTT N-BK 7® 517642.251 n n d e = 1.51680 = 1.51872 ½ ½ d e = 64.17 = 63.96 n n F F'--n n C C' = 0.008054 = 0.008110 Refractive Indices » [nm] … WebThe left-hand table on page 4.13 shows the refractive index of a typical UV-grade synthetic fused silica versus wavelength at 20ºC. To obtain the index for optical-quality synthetic fused silica, round ... transmittances of UVGSFS and BK7 Refractive Index of UV-Grade Synthetic Fused Silica* *Accuracy 83!1045. =n1 0.6961663 (0.0684043) + 0. ... chany felberbaum summit