FDS3 by Hoya

Obsolete Unknown Environmentally Dangerous

FDS3 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.7847 and a Vd of 26.057653. It has dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.334–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.334–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength

No transmission data available.

Transmission Calculator
Valid wavelength range: 0.334–2.325 µm
Optical Properties
Refractive Index (nd) 1.7847
Abbe Number (Vd) 26.057653
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{3.04316 - 0.00578196\,\lambda^2 + 0.0473682\,\lambda^{-2} + 0.000154435\,\lambda^{-4} + 0.000223277\,\lambda^{-6} + 8.22994 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) —
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) —
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
ZF51 CDGM 1.784701 26.075871
SFL56 Schott 1.7847 26.078312
SF56A Schott 1.7847 26.08
N-SF56 Schott 1.7847 26.1
SFS3 Sumita 1.7847 26.2
SFLD11 Sumita 1.78472 25.9
K-SFLD11 Sumita 1.78472 25.9
PBH23 Ohara 1.784702 26.216753
PBH23W Ohara 1.784702 26.216753
D85-26 Corning 1.784994 25.902085
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
FDS30 Hoya 1.784701 26.102957
FD110 Hoya 1.78472 25.72
FD11 Hoya 1.784715 25.704276
FD6 Hoya 1.805184 25.465194
FD60 Hoya 1.80518 25.46
FD60-W Hoya 1.80518 25.46
FD14 Hoya 1.761823 26.552048
FD140 Hoya 1.76182 26.61
FDS5 Hoya 1.761804 26.914901
NBFD29 Hoya 1.77047 29.74
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