MatWeb - Material Property Data Advertise with MatWeb!     Register Now
Data sheets for over 180,000 metals, plastics, ceramics, and composites.
MatWeb - Material Property Data HOME  •   SEARCH  •   TOOLS  •   SUPPLIERS  •   FOLDERS  •   ABOUT US  •   FAQ  •   LOG IN    
Recently Viewed Materials (most recent at top)  

Login to see your most recently viewed materials here.

Or if you don't have an account with us yet, then click here to register.

  Searches:   Advanced  | Category  | Property  | Metals  | Trade Name  | Manufacturer  | Recently Viewed Materials
  

Corning PHOTOBROWN EXTRA™ Photochromic crown glass.
Categories: Ceramic; Glass; Optical

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

Information provided by Corning Incorporated.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 2.41 g/cc0.0871 lb/in³
 
Thermal PropertiesMetricEnglishComments
CTE, linear 6.35 µm/m-°C3.53 µin/in-°F
Softening Point 665 °C1230 °F
Annealing Point 495 °C923 °F
Strain Point 665 °C1230 °F
 
Optical PropertiesMetricEnglishComments
Refractive Index  1.52016
@Wavelength 656.3 nm
1.52016
@Wavelength 656.3 nm
Line: C; Hydrogen
 1.52064
@Wavelength 643.8 nm
1.52064
@Wavelength 643.8 nm
Line: C'; Cadmium
 1.523
@Wavelength 587.6 nm
1.523
@Wavelength 587.6 nm
Line: d; Helium
 1.52523
@Wavelength 546.1 nm
1.52523
@Wavelength 546.1 nm
Line: e; Mercury
 1.52944
@Wavelength 486.1 nm
1.52944
@Wavelength 486.1 nm
Line: F; Hydrogen
 1.52999
@Wavelength 480 nm
1.52999
@Wavelength 480 nm
Line: F'; Cadmium
Abbe Number 56.256.2ve
 56.456.4vd
Transmission, Visible  21.5 %
@Wavelength 380 - 500 nm,
Thickness 2.00 mm
21.5 %
@Wavelength 380 - 500 nm,
Thickness 0.0787 in
Blue light transmission factor, Darkened
 29 %
@Wavelength 380 - 780 nm,
Thickness 2.00 mm
29 %
@Wavelength 380 - 780 nm,
Thickness 0.0787 in
Luminous, Darkened
 81.5 %
@Wavelength 380 - 500 nm,
Thickness 2.00 mm
81.5 %
@Wavelength 380 - 500 nm,
Thickness 0.0787 in
Blue light transmission factor, Faded
 89 %
@Wavelength 380 - 780 nm,
Thickness 2.00 mm
89 %
@Wavelength 380 - 780 nm,
Thickness 0.0787 in
Luminous, Faded
UV Transmittance  <= 0.10 %
@Thickness 2.00 mm
<= 0.10 %
@Thickness 0.0787 in
Solar UV-B transmission factor, Faded
 <= 0.10 %
@Thickness 2.00 mm
<= 0.10 %
@Thickness 0.0787 in
Solar UV-B transmission factor, Darkened
 2.0 %
@Thickness 2.00 mm
2.0 %
@Thickness 0.0787 in
Solar UV-A transmission factor, Darkened
 6.0 %
@Thickness 2.00 mm
6.0 %
@Thickness 0.0787 in
Solar UV-A transmission factor, Faded
 <= 0.10 %
@Wavelength 280 - 315 nm,
Thickness 2.00 mm
<= 0.10 %
@Wavelength 280 - 315 nm,
Thickness 0.0787 in
t(max), 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), Faded
 <= 0.10 %
@Wavelength 280 - 315 nm,
Thickness 2.00 mm
<= 0.10 %
@Wavelength 280 - 315 nm,
Thickness 0.0787 in
t(avg), Darkened
 1.5 %
@Wavelength 315 - 350 nm,
Thickness 2.00 mm
1.5 %
@Wavelength 315 - 350 nm,
Thickness 0.0787 in
t(max), Darkened
 2.5 %
@Wavelength 380 - 500 nm,
Thickness 2.00 mm
2.5 %
@Wavelength 380 - 500 nm,
Thickness 0.0787 in
t(moy), Darkened
 5.0 %
@Wavelength 315 - 350 nm,
Thickness 2.00 mm
5.0 %
@Wavelength 315 - 350 nm,
Thickness 0.0787 in
t(max), Faded
 8.5 %
@Wavelength 380 - 500 nm,
Thickness 2.00 mm
8.5 %
@Wavelength 380 - 500 nm,
Thickness 0.0787 in
t(moy), Faded
 
Descriptive Properties
ColorClear to medium brown

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.

Users viewing this material also viewed the following:
Corning FUSIBLE PHOTOBROWN EXTRA ™ Photochromic crown glass
Corning Unicrown Chemtemperable, UV absorbing crown glass
Corning PHOTOGRAY EXTRA™ Photochromic crown glass.
Corning PHOTOGRAY 16 High Index Photochromic crown glass
Corning PHOTOBROWN 16/45 High index photochromic crown glass

CCORN920 / 233331

Specialty Compounds RTP Company

Please read our License Agreement regarding materials data and our Privacy Policy. Questions or comments about MatWeb? Please contact us at webmaster@matweb.com. We appreciate your input.

The contents of this web site, the MatWeb logo, and "MatWeb" are Copyright 1996-2024 by MatWeb, LLC. MatWeb is intended for personal, non-commercial use. The contents, results, and technical data from this site may not be reproduced either electronically, photographically or substantively without permission from MatWeb, LLC.