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Rulon Bearings

Corning PHOTOGRAY 16 High Index Photochromic crown glass
Categories: Ceramic; Glass; Optical

Material Notes: Application : Ophthalmic lenses : Single vision, G&P progressive addition.

Information provided by Corning Incorporated.

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Physical PropertiesMetricEnglishComments
Density 2.70 g/cc0.0975 lb/in³
 
Thermal PropertiesMetricEnglishComments
CTE, linear 6.00 µm/m-°C3.33 µin/in-°F
Softening Point 685 °C1270 °F
Annealing Point 530 °C986 °F
Strain Point 685 °C1270 °F
 
Optical PropertiesMetricEnglishComments
Refractive Index  1.59629
@Wavelength 656.3 nm
1.59629
@Wavelength 656.3 nm
Line: C; Hydrogen
 1.59694
@Wavelength 643.8 nm
1.59694
@Wavelength 643.8 nm
Line: C'; Cadmium
 1.60050
@Wavelength 587.6 nm
1.60050
@Wavelength 587.6 nm
Line: d; Helium
 1.60151
@Wavelength 486.1 nm
1.60151
@Wavelength 486.1 nm
Line: F; Hydrogen
 1.60387
@Wavelength 546.1 nm
1.60387
@Wavelength 546.1 nm
Line: e; Mercury
 1.61123
@Wavelength 480 nm
1.61123
@Wavelength 480 nm
Line: F'; Cadmium
Abbe Number 4242ve
 42.242.2vd
Transmission, Visible  31 %
@Wavelength 380 - 500 nm,
Thickness 2.00 mm
31 %
@Wavelength 380 - 500 nm,
Thickness 0.0787 in
Blue light transmission factor, Darkened
 32 %
@Wavelength 380 - 780 nm,
Thickness 2.00 mm
32 %
@Wavelength 380 - 780 nm,
Thickness 0.0787 in
Luminous, Darkened
 77 %
@Wavelength 380 - 500 nm,
Thickness 2.00 mm
77 %
@Wavelength 380 - 500 nm,
Thickness 0.0787 in
Blue light transmission factor, Heat Faded
 88 %
@Wavelength 380 - 780 nm,
Thickness 2.00 mm
88 %
@Wavelength 380 - 780 nm,
Thickness 0.0787 in
Luminous, Heat Faded
UV Transmittance  <= 0.10 %
@Thickness 2.00 mm
<= 0.10 %
@Thickness 0.0787 in
Solar UV-B transmission factor, Heat Faded
 <= 0.10 %
@Thickness 2.00 mm
<= 0.10 %
@Thickness 0.0787 in
Solar UV-B transmission factor, Darkened
 1.5 %
@Thickness 2.00 mm
1.5 %
@Thickness 0.0787 in
Solar UV-A transmission factor, Darkened
 4.0 %
@Thickness 2.00 mm
4.0 %
@Thickness 0.0787 in
Solar UV-A transmission factor, Heat Faded
 <= 0.10 %
@Wavelength 280 - 315 nm,
Thickness 2.00 mm
<= 0.10 %
@Wavelength 280 - 315 nm,
Thickness 0.0787 in
t(max), Heat Faded
 <= 0.10 %
@Wavelength 280 - 315 nm,
Thickness 2.00 mm
<= 0.10 %
@Wavelength 280 - 315 nm,
Thickness 0.0787 in
t(max), Darkened
 <= 0.10 %
@Wavelength 280 - 315 nm,
Thickness 2.00 mm
<= 0.10 %
@Wavelength 280 - 315 nm,
Thickness 0.0787 in
t(avg), Heat Faded
 <= 0.10 %
@Wavelength 280 - 315 nm,
Thickness 2.00 mm
<= 0.10 %
@Wavelength 280 - 315 nm,
Thickness 0.0787 in
t(avg), Darkened
 1.0 %
@Wavelength 315 - 350 nm,
Thickness 2.00 mm
1.0 %
@Wavelength 315 - 350 nm,
Thickness 0.0787 in
t(max), Darkened
 1.5 %
@Wavelength 315 - 350 nm,
Thickness 2.00 mm
1.5 %
@Wavelength 315 - 350 nm,
Thickness 0.0787 in
t(max), Heat Faded
 2.0 %
@Wavelength 380 - 500 nm,
Thickness 2.00 mm
2.0 %
@Wavelength 380 - 500 nm,
Thickness 0.0787 in
t(moy), Darkened
 6.0 %
@Wavelength 380 - 500 nm,
Thickness 2.00 mm
6.0 %
@Wavelength 380 - 500 nm,
Thickness 0.0787 in
t(moy), Heat Faded
 
Descriptive Properties
ColorClear to medium gray

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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