A88-66 by Corning

Standard Unknown Environmentally Friendly

A88-66 by Corning is a standard optical glass. It transmits from 0.28 to 1.80 µm with an nd of 1.487502 and a Vd of 65.807152. It has low thermal expansion (CTE of 4.3×10⁻⁶/K).

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.28–1.8 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.28–1.8 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.280–1.800 µm
Optical Properties
Refractive Index (nd) 1.487502
Abbe Number (Vd) 65.807152
Dispersion Formula Schott
Wavelength Range 0.28 — 1.8 µm
$$n(\lambda) = \sqrt{2.18707 - 0.010244\,\lambda^2 + 0.00978239\,\lambda^{-2} + 6.29459 \times 10^{-5}\,\lambda^{-4} + 1.3394 \times 10^{-5}\,\lambda^{-6} - 8.46451 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 4.3
TCE 100/300°C (10-6/K) 5.0
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) 2.28
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
BSC3 Hoya 1.498309 65.130542
BK3 Sumita 1.49831 65.1
BK3 Schott 1.498311 65.063609
BSL3 Ohara 1.498308 65.026785
BSC4 Hoya 1.50048 65.996466
BK4 Sumita 1.50048 66.0
H-K2 CDGM 1.50047 66.020774
N-BK10 Schott 1.49782 66.95
BK10 Schott 1.497821 66.95447
BK10 Sumita 1.49782 67.0
Similar Glasses (Corning)
Glass Manufacturer nd Vd Compare
A63-65 Corning 1.464501 65.763211
B10-63 Corning 1.509992 63.551713
B18-65 Corning 1.518199 65.115452
B16-64 Corning 1.516804 64.224234
C79-80 Corning 1.458467 67.795012
A87-70 Corning 1.487248 70.500557
B19-61 Corning 1.519061 61.386004
B11-60 Corning 1.510999 60.383147
B18-60 Corning 1.518201 60.291781
B23-59 Corning 1.522996 59.479482
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