B64-61 by Corning

Standard Unknown Environmentally Friendly

B64-61 by Corning is a standard optical glass. It transmits from 0.29 to 1.80 µm with an nd of 1.564005 and a Vd of 60.964853. It has medium thermal expansion (CTE of 7.4×10⁻⁶/K).

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.29–1.8 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.29–1.8 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.290–1.800 µm
Optical Properties
Refractive Index (nd) 1.564005
Abbe Number (Vd) 60.964853
Dispersion Formula Schott
Wavelength Range 0.29 — 1.8 µm
$$n(\lambda) = \sqrt{2.40952 - 0.0096547\,\lambda^2 + 0.0137681\,\lambda^{-2} - 9.76152 \times 10^{-5}\,\lambda^{-4} + 4.11201 \times 10^{-5}\,\lambda^{-6} - 1.97684 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.4
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) 3.01
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
BACD11 Hoya 1.56384 60.83
L-PHL1 Ohara 1.56455 60.818065
SK11 Sumita 1.56384 60.8
N-SK11 Schott 1.56384 60.8
SK11 Schott 1.56384 60.798869
H-BAK6 CDGM 1.56388 60.764747
K-PSK11 Sumita 1.5658 61.0
P-SK11 Sumita 1.5658 61.0
BAL41 Ohara 1.563839 60.695914
S-BAL41 Ohara 1.563839 60.666575
Similar Glasses (Corning)
Glass Manufacturer nd Vd Compare
B89-61 Corning 1.588998 61.218914
B39-59 Corning 1.539505 59.712433
B72-57 Corning 1.572498 57.494511
B69-56 Corning 1.568797 56.044859
B23-59 Corning 1.522996 59.479482
C04-64 Corning 1.603507 63.401916
B19-61 Corning 1.519061 61.386004
B18-60 Corning 1.518201 60.291781
B52-67 Corning 1.552198 67.059229
C09-59 Corning 1.608756 59.036803
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