BSL3 by Ohara

Obsolete Unknown Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.3–2.4 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.3–2.4 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.300–0.900 µm
Optical Properties
Refractive Index (nd) 1.498308
Abbe Number (Vd) 65.026785
Dispersion Formula Schott
Wavelength Range 0.3 — 2.4 µm
$$n(\lambda) = \sqrt{2.21876 - 0.0104472\,\lambda^2 + 0.00959045\,\lambda^{-2} + 0.000285409\,\lambda^{-4} - 1.91837 \times 10^{-5}\,\lambda^{-6} + 9.70045 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 5.8
TCE 100/300°C (10-6/K) 6.5
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[4.431 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 2.36
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance 3
Alkali Resistance —
Phosphate Resistance 2
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
BK3 Schott 1.498311 65.063609
BK3 Sumita 1.49831 65.1
BSC3 Hoya 1.498309 65.130542
H-K3 CDGM 1.50463 64.720718
BSC4 Hoya 1.50048 65.996466
BK4 Sumita 1.50048 66.0
H-K2 CDGM 1.50047 66.020774
A88-66 Corning 1.487502 65.807152
N-BK10 Schott 1.49782 66.95
BK10 Schott 1.497821 66.95447
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
BSL21 Ohara 1.503779 66.814545
BSL1 Ohara 1.510091 63.635037
BSL7Y Ohara 1.51633 64.243778
BSL7 Ohara 1.51633 64.150145
S-BSL7 Ohara 1.51633 64.142022
L-BSL7 Ohara 1.51633 64.065129
BSL22 Ohara 1.518206 65.039654
S-BSL7R Ohara 1.51633 63.881689
FSL3 Ohara 1.464499 65.938855
NSL7 Ohara 1.511121 60.485793
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