D28-28 by Corning

Standard Unknown Environmentally Friendly

D28-28 by Corning is a standard optical glass. It transmits from 0.36 to 1.80 µm with an nd of 1.728304 and a Vd of 28.397796. It has medium thermal expansion (CTE of 7.1×10⁻⁶/K).

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.36–1.8 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.36–1.8 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.360–1.800 µm
Optical Properties
Refractive Index (nd) 1.728304
Abbe Number (Vd) 28.397796
Dispersion Formula Schott
Wavelength Range 0.36 — 1.8 µm
$$n(\lambda) = \sqrt{2.87725 - 0.0097339\,\lambda^2 + 0.0338587\,\lambda^{-2} + 0.00200828\,\lambda^{-4} - 0.000123822\,\lambda^{-6} + 1.74151 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.1
TCE 100/300°C (10-6/K) 8.4
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) 4.45
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
SF10 Schott 1.72825 28.41
S-TIH10 Ohara 1.72825 28.460599
PBH10 Ohara 1.728249 28.4623
ZF4 CDGM 1.728251 28.3239
E-FD10L Hoya 1.72825 28.32
E-FD10 Hoya 1.72825 28.32
FD10 Hoya 1.728252 28.319563
H-ZF4A CDGM 1.72825 28.318797
H-ZF4AGT CDGM 1.72825 28.318797
SF10W Sumita 1.72825 28.3
Similar Glasses (Corning)
Glass Manufacturer nd Vd Compare
D40-28 Corning 1.740001 28.102623
D17-29 Corning 1.717409 29.492751
D34-26 Corning 1.73402 26.500794
D56-27 Corning 1.755203 27.591377
C99-30 Corning 1.699002 30.107427
D62-27 Corning 1.761802 26.90455
C89-31 Corning 1.689004 31.210861
D85-26 Corning 1.784994 25.902085
D85-25 Corning 1.784752 25.799504
C72-32 Corning 1.672698 32.31788
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