PBH1 by Ohara

Obsolete Unknown Environmentally Dangerous

PBH1 by Ohara is an obsolete optical glass. It transmits from 0.34 to 2.40 µm with an nd of 1.717362 and a Vd of 29.513538. It has medium thermal expansion (CTE of 8.0×10⁻⁶/K), average chemical resistance, and dangerous environmental properties.

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: 0.340–2.400 µm
Optical Properties
Refractive Index (nd) 1.717362
Abbe Number (Vd) 29.513538
Dispersion Formula Sellmeier
Wavelength Range 0.3 — 2.4 µm
$$n(\lambda) = \sqrt{1 + \frac{1.55408\,\lambda^2}{\lambda^2 - 0.0120147} + \frac{0.289398\,\lambda^2}{\lambda^2 - 0.0532883} + \frac{1.06728\,\lambda^2}{\lambda^2 - 122.863}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.0
TCE 100/300°C (10-6/K) 8.9
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.076 \times 10^{-5} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 4.47
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 Compare
ZF3 CDGM 1.717365 29.510385
SF1 Schott 1.71736 29.51
FD1 Hoya 1.71736 29.50028
K-SFLD1 Sumita 1.71736 29.5
SF1 Sumita 1.71736 29.5
E-FD1 Hoya 1.71736 29.5
E-FD1L Hoya 1.71736 29.5
H-ZF3 CDGM 1.71736 29.49911
D17-29 Corning 1.717409 29.492751
N-SF1 Schott 1.71736 29.62
Similar Glasses (Ohara)
Glass Manufacturer nd Vd Compare
S-TIH1 Ohara 1.717362 29.518091
PBH18 Ohara 1.721506 29.243262
S-TIH18 Ohara 1.721507 29.23233
S-TIH20 Ohara 1.70585 30.244176
PBH10 Ohara 1.728249 28.4623
S-TIH10 Ohara 1.72825 28.460599
PBM35 Ohara 1.698947 30.121211
S-TIM35 Ohara 1.698947 30.127865
L-TIM28P Ohara 1.694529 30.655992
S-TIH3 Ohara 1.739998 28.296005
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