C2 by Hoya

Obsolete Unknown Environmentally Dangerous

C2 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.51602 and a Vd of 56.771193. 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) 1.51602
Abbe Number (Vd) 56.771193
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.26517 - 0.00895129\,\lambda^2 + 0.0115571\,\lambda^{-2} + 0.000382382\,\lambda^{-4} - 2.29274 \times 10^{-5}\,\lambda^{-6} + 1.53504 \times 10^{-6}\,\lambda^{-8}}$$
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
H-K8 CDGM 1.51602 56.794825
NSL2 Ohara 1.516016 56.800755
S-NSL2 Ohara 1.516016 56.858179
K4 Schott 1.518952 57.399398
K5G20 Schott 1.52344 56.76
KDP Generic Birefringent 1.509182 56.224997
S-FTL10 Ohara 1.501372 56.421009
K10 Schott 1.50137 56.41
FTL10 Ohara 1.501372 56.399833
B270 Schott 1.52308 58.571369
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
C10 Hoya 1.50137 56.296772
C12 Hoya 1.523073 58.640203
CF3 Hoya 1.51454 54.628437
E-C3 Hoya 1.51823 58.96
C3 Hoya 1.518234 58.96082
ZNC1 Hoya 1.533149 58.063515
C5 Hoya 1.522488 59.447258
BACL1 Hoya 1.526417 60.113677
BACL3 Hoya 1.518351 60.396486
C40 Hoya 1.523 60.4016
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