PCD4 by Hoya

Preferred Common Environmentally Dangerous

PCD4 by Hoya is a preferred optical glass with a common melt frequency. It transmits from 0.28 to 2.50 µm with an nd of 1.618 and a Vd of 63.4. It has medium thermal expansion (CTE of 8.7×10⁻⁶/K), average chemical resistance, and dangerous environmental properties.

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: 0.280–2.500 µm
Optical Properties
Refractive Index (nd) 1.618
Abbe Number (Vd) 63.4
Dispersion Formula Schott
Wavelength Range 0.36501 — 1.5296 µm
$$n(\lambda) = \sqrt{2.5807 - 0.0109575\,\lambda^2 + 0.0126894\,\lambda^{-2} + 0.000663878\,\lambda^{-4} - 6.48497 \times 10^{-5}\,\lambda^{-6} + 3.47879 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.7
TCE 100/300°C (10-6/K) 11.1
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-8.93 \times 10^{-6} + 2(1.28 \times 10^{-8})\,\Delta T + 3(-1.34 \times 10^{-11})\,\Delta T^2 + \frac{5.36 \times 10^{-7} + 2(-8.84 \times 10^{-11})\,\Delta T}{\lambda - 2.93 \times 10^{-9}}\right] \Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.52
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance 3
Acid Resistance 5
Alkali Resistance —
Phosphate Resistance —
Notes

Recommended glass type

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
K-PSKn2 Sumita 1.618 63.4
PSKN2 Sumita 1.618 63.4
H-ZPK1A CDGM 1.618 63.392702
N-PSK53A Schott 1.618 63.39
PHM52 Ohara 1.617999 63.386441
S-PHM52 Ohara 1.618 63.333504
S-PHM52Q Ohara 1.617999 63.321449
N-PSK53 Schott 1.62014 63.48
PSK53A Schott 1.620141 63.480444
D-ZPK1A-25 CDGM 1.61999 63.763831
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
PCD53 Hoya 1.620139 63.516754
M-PCD4 Hoya 1.61881 63.85
MP-PCD4-40 Hoya 1.61921 63.85
MC-PCD4-40 Hoya 1.61921 63.85
PCD40 Hoya 1.61997 63.88
PCD5 Hoya 1.616998 62.827457
ATC1 Hoya 1.62 62.19284
ADC1 Hoya 1.62 62.192825
LBC3N Hoya 1.60625 63.72
BACD16 Hoya 1.62041 60.35
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