MP-FDS2 by Hoya

Preferred Common Precision Molding Environmentally Friendly

MP-FDS2 by Hoya is a preferred optical glass with a common melt frequency. It transmits from 0.40 to 1.55 µm with an nd of 2.00178 and a Vd of 19.32. It has medium thermal expansion (CTE of 7.9×10⁻⁶/K), excellent chemical resistance, and precision molding compatibility.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.36501–1.5296 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.36501–1.5296 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.400–1.550 µm
Optical Properties
Refractive Index (nd) 2.00178
Abbe Number (Vd) 19.32
Dispersion Formula Schott
Wavelength Range 0.36501 — 1.5296 µm
$$n(\lambda) = \sqrt{3.77158 - 0.0204454\,\lambda^2 + 0.0639426\,\lambda^{-2} + 0.00835455\,\lambda^{-4} - 0.00082032\,\lambda^{-6} + 0.000102795\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.9
TCE 100/300°C (10-6/K) 10.1
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[2.17 \times 10^{-7} + 2(1.14 \times 10^{-8})\,\Delta T + 3(-3.07 \times 10^{-11})\,\Delta T^2 + \frac{1.84 \times 10^{-6} + 2(2.48 \times 10^{-9})\,\Delta T}{\lambda - 0.308}\right] \Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
Density (g/cm³) 5.09
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance 1
Acid Resistance 1
Alkali Resistance —
Phosphate Resistance —
Notes

Preforms for Precision molding

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
K-PSFn2 Sumita 2.0017 20.6
D-ZF93 CDGM 2.0017 20.700195
D-ZF93-25 CDGM 1.9998 20.686444
K-PSFn2(M) Sumita 1.9967 20.6
P-SF68 Schott 2.0052 21.0
K-PSFn203(M) Sumita 2.01105 20.8
K-PSFn203 Sumita 2.017 20.8
K-PSFn202(M) Sumita 2.01365 21.4
K-PSFn202 Sumita 2.0196 21.5
K-PSFn202P Sumita 2.0216 21.4
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
MC-FDS2 Hoya 2.00178 19.32
M-FDS2 Hoya 2.00178 19.32
E-FDS2 Hoya 2.00272 19.32
FDS165-W Hoya 1.98611 17.25
FDS16-W Hoya 1.98612 16.48
TAFD43 Hoya 2.002944 23.512743
TAFD40 Hoya 2.00069 25.46
TAFD40-W Hoya 2.00069 25.46
FDS18 Hoya 1.94595 17.98
FDS18-W Hoya 1.94595 17.98
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