BPH5 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: 0.330–2.400 µm
Optical Properties
Refractive Index (nd) 1.654115
Abbe Number (Vd) 39.687638
Dispersion Formula Sellmeier
Wavelength Range 0.3 — 2.4 µm
$$n(\lambda) = \sqrt{1 + \frac{1.44846\,\lambda^2}{\lambda^2 - 0.00928174} + \frac{0.220448\,\lambda^2}{\lambda^2 - 0.0433002} + \frac{0.994764\,\lambda^2}{\lambda^2 - 77.6475}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 4.6
TCE 100/300°C (10-6/K) 5.7
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[9.679 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.49
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance 52
Alkali Resistance —
Phosphate Resistance 4
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
N-KZFS5 Schott 1.65412 39.7
KZFSN5 Schott 1.65412 39.63
ADF50 Hoya 1.654118 39.624202
E-ADF50 Hoya 1.65412 39.62
H-TF5 CDGM 1.6541 39.539424
NBFD38 Hoya 1.65253 39.48
C55-40 Corning 1.6555 40.115717
BAFD10 Hoya 1.650157 39.343065
BASF10 Sumita 1.65016 39.3
C51-39 Corning 1.650206 39.193419
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
S-NBH5 Ohara 1.654115 39.682794
BAH30 Ohara 1.650158 39.390461
BPH35 Ohara 1.644496 40.817749
BAH32 Ohara 1.669979 39.279752
S-BAH32 Ohara 1.669979 39.271035
BAH26 Ohara 1.667551 41.927521
S-NBH52V Ohara 1.673 38.256077
S-NBH52 Ohara 1.672999 38.14817
BPH40 Ohara 1.676498 37.537388
BAM21 Ohara 1.626059 39.215631
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