BPH35 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: 0.320–0.700 µm
Optical Properties
Refractive Index (nd) 1.644496
Abbe Number (Vd) 40.817749
Dispersion Formula Schott
Wavelength Range 0.3 — 2.4 µm
$$n(\lambda) = \sqrt{2.64134 - 0.0129975\,\lambda^2 + 0.0212519\,\lambda^{-2} + 0.000741669\,\lambda^{-4} - 1.98145 \times 10^{-5}\,\lambda^{-6} + 3.06989 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 4.8
TCE 100/300°C (10-6/K) 6.2
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[9.051 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.46
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
ADF355 Hoya 1.6445 40.762285
BASF57 Schott 1.651474 41.901823
C55-40 Corning 1.6555 40.115717
BAFD10 Hoya 1.650157 39.343065
BASF10 Sumita 1.65016 39.3
N-KZFS5 Schott 1.65412 39.7
NBFD38 Hoya 1.65253 39.48
KZFSN5 Schott 1.65412 39.63
ADF50 Hoya 1.654118 39.624202
E-ADF50 Hoya 1.65412 39.62
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
BAH30 Ohara 1.650158 39.390461
BPH5 Ohara 1.654115 39.687638
S-NBH5 Ohara 1.654115 39.682794
BAM21 Ohara 1.626059 39.215631
S-NBM52 Ohara 1.622049 41.079324
BAH26 Ohara 1.667551 41.927521
BAH32 Ohara 1.669979 39.279752
S-BAH32 Ohara 1.669979 39.271035
S-BAM12 Ohara 1.6393 44.872804
BAM12 Ohara 1.6393 44.878032
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