SBF1 by Hoya

Obsolete Unknown Environmentally Dangerous

SBF1 by Hoya is an obsolete optical glass. It transmits from 0.31 to 1.55 µm with an nd of 1.551151 and a Vd of 49.517289. It has below average chemical resistance, moderate relative cost, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.25–1.55 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.25–1.55 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.310–1.550 µm
Optical Properties
Refractive Index (nd) 1.551151
Abbe Number (Vd) 49.517289
Dispersion Formula Schott
Wavelength Range 0.25 — 1.55 µm
$$n(\lambda) = \sqrt{2.36158 - 0.00878619\,\lambda^2 + 0.0162997\,\lambda^{-2} - 0.0001317\,\lambda^{-4} + 6.53375 \times 10^{-5}\,\lambda^{-6} - 2.53517 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 69.0
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) 2.72
Relative Cost 5.7
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 4
Stain Resistance —
Acid Resistance 3
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
KZFN1 Schott 1.551149 49.637723
BAF1 Sumita 1.5569 48.5
QF70GFI CDGM 1.547 48.161896
H-BAF2 CDGM 1.5697 49.452646
BAF2 CDGM 1.569703 49.435926
PBL2 Ohara 1.54072 47.23368
LLF6HT Schott 1.531739 48.974492
H-QF8 CDGM 1.54072 47.230007
S-TIL2 Ohara 1.54072 47.227127
PBL6Y Ohara 1.531717 48.956017
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
BAF2 Hoya 1.56965 49.392725
FEL3 Hoya 1.560125 47.090971
E-FEL2 Hoya 1.54072 47.2
FEL2 Hoya 1.540718 47.198247
E-FEL6 Hoya 1.53172 48.84
FEL6 Hoya 1.53172 48.837531
BAFL2 Hoya 1.570989 50.858935
CF4 Hoya 1.533577 51.545117
SBF2 Hoya 1.52944 51.643052
CF2 Hoya 1.526296 51.046045
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