REALVIEW_1.9_LIGHTWEIGHT by Schott

Preferred Unknown Environmentally Dangerous

REALVIEW_1.9_LIGHTWEIGHT by Schott is a preferred optical glass. It transmits from 0.38 to 2.50 µm with an nd of 1.922002 and a Vd of 21.44. It has medium thermal expansion (CTE of 8.34×10⁻⁶/K), excellent chemical resistance, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.38–2.5 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.38–2.5 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.380–2.500 µm
Optical Properties
Refractive Index (nd) 1.922002
Abbe Number (Vd) 21.44
Dispersion Formula Sellmeier
Wavelength Range 0.38 — 2.5 µm
$$n(\lambda) = \sqrt{1 + \frac{1.99085\,\lambda^2}{\lambda^2 - 0.0148094} + \frac{0.502624\,\lambda^2}{\lambda^2 - 0.0648963} + \frac{2.89672\,\lambda^2}{\lambda^2 - 201.494}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.34
TCE 100/300°C (10-6/K) 9.7
Thermal Conductivity (W/mK) 1.03
Heat Capacity (J/gK) 0.66
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-5 \times 10^{-6} + 2(8.92 \times 10^{-9})\,\Delta T + 3(-2.05 \times 10^{-11})\,\Delta T^2 + \frac{1.17 \times 10^{-6} + 2(1.79 \times 10^{-9})\,\Delta T}{\lambda - 0.301}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.619
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) 99.4
Poisson's Ratio 0.27
Knoop Hardness (kgf/mm²) 556.0
Chemical Resistance
Climatic Resistance —
Stain Resistance 0
Acid Resistance 1
Alkali Resistance 1
Phosphate Resistance 1
Notes

augmented reality glass

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
PBH71 Ohara 1.922864 21.288699
PBH21 Ohara 1.922861 20.884172
FDS1 Hoya 1.922859 20.883457
E-FDS1-W Hoya 1.92286 20.88
MP-FDS1 Hoya 1.92286 20.88
E-FDS1 Hoya 1.92286 20.88
M-FDS1 Hoya 1.92286 20.88
H-ZF62GT CDGM 1.92286 20.879915
H-ZF62 CDGM 1.92286 20.879915
PBH72 Ohara 1.915356 21.171926
Similar Glasses (Schott)
Glass Manufacturer nd Vd Compare
N-SF66 Schott 1.92286 20.88
SF66 Schott 1.92286 20.88
SF58 Schott 1.917613 21.51112
P-SF67 Schott 1.9068 21.4
SF59 Schott 1.952497 20.363706
N-LASF55 Schott 1.9538 30.56
N-LASF46A Schott 1.90366 31.32
N-LASF46B Schott 1.90366 31.32
SFL57 Schott 1.84666 23.62
SF57HHT Schott 1.84666 23.779912
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