E37-30 by Corning

Standard Unknown Environmentally Friendly

E37-30 by Corning is a standard optical glass. It transmits from 0.35 to 1.80 µm with an nd of 1.836406 and a Vd of 30.205692. It has low thermal expansion (CTE of 6.5×10⁻⁶/K).

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.35–1.8 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.35–1.8 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.350–1.800 µm
Optical Properties
Refractive Index (nd) 1.836406
Abbe Number (Vd) 30.205692
Dispersion Formula Schott
Wavelength Range 0.35 — 1.8 µm
$$n(\lambda) = \sqrt{3.24655 - 0.0131056\,\lambda^2 + 0.039645\,\lambda^{-2} + 0.00200443\,\lambda^{-4} - 0.000108552\,\lambda^{-6} + 1.90392 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 6.5
TCE 100/300°C (10-6/K) 8.6
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.89
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
H-ZLAF76 CDGM 1.85013 30.055517
H-ZLAF76A CDGM 1.85013 30.012319
S-NBH57 Ohara 1.850249 30.046429
M-NBFD83 Hoya 1.820268 29.696286
IRG3 Generic IR 1.844836 32.330322
N-LASF9HT Schott 1.85025 32.17
N-LASF9 Schott 1.85025 32.17
LASFN9 Schott 1.85025 32.17
TAFD9 Hoya 1.850299 32.181026
H-ZLAF71AGT CDGM 1.85026 32.216801
Similar Glasses (Corning)
Glass Manufacturer nd Vd Compare
E05-25 Corning 1.805093 25.506125
D85-26 Corning 1.784994 25.902085
D85-25 Corning 1.784752 25.799504
E78-38 Corning 1.878005 38.494794
E65-40 Corning 1.865 40.112393
D62-27 Corning 1.761802 26.90455
D56-27 Corning 1.755203 27.591377
D40-28 Corning 1.740001 28.102623
D96-43 Corning 1.796195 43.217783
D34-26 Corning 1.73402 26.500794
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