BSM23 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: 0.340–0.700 µm
Optical Properties
Refractive Index (nd) 1.614839
Abbe Number (Vd) 51.172377
Dispersion Formula Schott
Wavelength Range 0.3 — 2.4 µm
$$n(\lambda) = \sqrt{2.56006 - 0.00974572\,\lambda^2 + 0.0159706\,\lambda^{-2} + 0.000668021\,\lambda^{-4} - 4.41728 \times 10^{-5}\,\lambda^{-6} + 3.10249 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.1
TCE 100/300°C (10-6/K) 8.2
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[2.882 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.45
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance 4
Alkali Resistance —
Phosphate Resistance 2
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
SSK3 Schott 1.614837 51.1603
BACED3 Hoya 1.614838 51.1513
SSK3 Sumita 1.61484 51.1
K-SSK3 Sumita 1.61484 51.1
N-SSK8 Schott 1.61773 49.83
SSKN8 Schott 1.61772 49.771451
SSK50 Schott 1.617954 52.609086
BACED9 Hoya 1.620119 49.823001
C0550 Corning 1.605004 50.419332
C05-50 Corning 1.605004 50.419332
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
BSM28 Ohara 1.617722 49.83232
S-BSM28 Ohara 1.617722 49.815052
BAM5 Ohara 1.607289 49.188575
S-BSM22 Ohara 1.622296 53.169067
BSM22 Ohara 1.622296 53.186644
BSM21 Ohara 1.617196 54.040511
S-BSM21 Ohara 1.617195 54.062144
BAL7 Ohara 1.58875 51.179278
BSM9 Ohara 1.614047 54.971106
S-BSM9 Ohara 1.614047 54.990097
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