C7 by Hoya

Obsolete Unknown Environmentally Dangerous

C7 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.511122 and a Vd of 60.485929. 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) 1.511122
Abbe Number (Vd) 60.485929
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.25136 - 0.00794946\,\lambda^2 + 0.0116168\,\lambda^{-2} + 0.0001515\,\lambda^{-4} - 3.15249 \times 10^{-6}\,\lambda^{-6} + 4.84127 \times 10^{-7}\,\lambda^{-8}}$$
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
NSL7 Ohara 1.511121 60.485793
H-K6 CDGM 1.511125 60.478905
K7 Sumita 1.51112 60.5
K7HT Schott 1.511144 60.466081
K7 Schott 1.51112 60.41
B11-60 Corning 1.510999 60.383147
H-K7 CDGM 1.51478 60.634896
N-ZK7A Schott 1.508054 61.04
K4A CDGM 1.50802 61.052897
ZKN7 Schott 1.508469 61.187789
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
ZNC7 Hoya 1.508471 61.266087
BACL3 Hoya 1.518351 60.396486
C40 Hoya 1.523 60.4016
C3 Hoya 1.518234 58.96082
E-C3 Hoya 1.51823 58.96
C5 Hoya 1.522488 59.447258
BACL1 Hoya 1.526417 60.113677
C12 Hoya 1.523073 58.640203
BSC1 Hoya 1.510091 63.435118
BSC6 Hoya 1.531128 62.075664
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