CSBR by Generic IR

Standard Unknown Environmentally Friendly

CSBR by Generic IR is a standard optical glass. It transmits from 0.36 to 39.00 µm with an nd of 1.69706 and a Vd of 34.108015. It has very high thermal expansion (CTE of 47.2×10⁻⁶/K).

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.36–39.0 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.36–39.0 µm
Abbe Number Calculator
Transmission vs Wavelength

No transmission data available.

Transmission Calculator
Valid wavelength range: 0.360–39.000 µm
Optical Properties
Refractive Index (nd) 1.69706
Abbe Number (Vd) 34.108015
Dispersion Formula Sellmeier
Wavelength Range 0.36 — 39.0 µm
$$n(\lambda) = \sqrt{1 + \frac{0.953379\,\lambda^2}{\lambda^2 - 0.00820189} + \frac{0.830381\,\lambda^2}{\lambda^2 - 0.0279397} + \frac{2.84717\,\lambda^2}{\lambda^2 - 14164.7}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 47.2
TCE 100/300°C (10-6/K) —
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-0.00012 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 4.488
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 —
Notes

source: Handbook of Optics Vol. II

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
CD45 Sumita 1.6932 33.7
K-CD45 Sumita 1.6932 33.7
BAFD14 Hoya 1.699678 34.925493
K-CD45(M) Sumita 1.68673 34.1
KZFS12 Schott 1.696 36.29
C97-36 Corning 1.695989 36.517325
BPH45 Ohara 1.718502 33.515702
ADF455 Hoya 1.71852 33.456548
N-SF8 Schott 1.68894 31.31
P-SF8 Schott 1.68893 31.25
Similar Glasses (Generic IR)
Glass Manufacturer nd Vd Compare
IRG11 Generic IR 1.680932 44.434326
PBF2 Generic IR 1.766591 28.390315
GEO2 Generic IR 1.608459 41.728763
CALCITE Generic IR 1.658643 48.541403
KBR Generic IR 1.559967 31.977241
IRG3 Generic IR 1.844836 32.330322
MGO Generic IR 1.737505 53.505455
IRG7 Generic IR 1.564424 43.736647
IRGN6 Generic IR 1.589096 56.33564
SPINEL Generic IR 1.716226 60.607355
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