FD3 by Hoya

Obsolete Unknown Environmentally Dangerous

FD3 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.739999 and a Vd of 28.245048. 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) 1.739999
Abbe Number (Vd) 28.245048
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.91604 - 0.0104356\,\lambda^2 + 0.0339079\,\lambda^{-2} + 0.00227288\,\lambda^{-4} - 0.000135632\,\lambda^{-6} + 1.65276 \times 10^{-5}\,\lambda^{-8}}$$
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
ZF5 CDGM 1.739999 28.245048
PBH3 Ohara 1.739998 28.283809
PBH3W Ohara 1.739998 28.287409
SF3 Schott 1.74 28.2
SF3 Sumita 1.74 28.2
H-ZF5 CDGM 1.74 28.295649
S-TIH3 Ohara 1.739998 28.296005
D40-28 Corning 1.740001 28.102623
SF54 Schott 1.7408 28.090813
PBH13W Ohara 1.740769 27.793228
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
FD13 Hoya 1.740774 27.764991
E-FD13 Hoya 1.74077 27.76
FD41 Hoya 1.750839 27.686615
FD10 Hoya 1.728252 28.319563
E-FD10 Hoya 1.72825 28.32
E-FD10L Hoya 1.72825 28.32
FDS2 Hoya 1.7283 28.674457
FD4 Hoya 1.755199 27.530242
E-FD4 Hoya 1.7552 27.53
E-FD4L Hoya 1.7552 27.53
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