PHM51 by Ohara

Obsolete Unknown Environmentally Dangerous

PHM51 by Ohara is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.617001 and a Vd of 62.800809. 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) 1.617001
Abbe Number (Vd) 62.800809
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.5759 - 0.0105535\,\lambda^2 + 0.0138959\,\lambda^{-2} + 0.000264983\,\lambda^{-4} - 1.96805 \times 10^{-6}\,\lambda^{-6} + 1.099 \times 10^{-7}\,\lambda^{-8}}$$
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
PCD5 Hoya 1.616998 62.827457
N-PSK53A Schott 1.618 63.39
H-ZPK1A CDGM 1.618 63.392702
K-PSKn2 Sumita 1.618 63.4
PCD4 Hoya 1.618 63.4
PSKN2 Sumita 1.618 63.4
ATC1 Hoya 1.62 62.19284
ADC1 Hoya 1.62 62.192825
N-PSK53 Schott 1.62014 63.48
PSK53A Schott 1.620141 63.480444
Similar Glasses (Ohara)
Glass Manufacturer nd Vd Compare
S-PHM51 Ohara 1.617001 62.800809
S-PHM52Q Ohara 1.617999 63.321449
S-PHM52 Ohara 1.618 63.333504
PHM52 Ohara 1.617999 63.386441
S-BSM16 Ohara 1.620411 60.289582
BSM16 Ohara 1.62041 60.271913
BSM16C Ohara 1.62041 60.254106
BSM14 Ohara 1.603112 60.704896
BSM51Y Ohara 1.603109 60.651225
S-BSM14 Ohara 1.603112 60.64108
Compare Glasses
    Compare Selected