Skip to main content

Colored Glass

Kopp has been at the forefront of industry innovation for nearly a century. At the turn of the 20th century, with the onset of the railroad, there was a need for improved safety. We responded with the invention of "Selenium Red" glass and manufacture of these red glasses into lenses which quickly became the standard for railroad signal lighting. Since then, our ability to adapt and respond to changing technologies and deep understanding of industry requirements has enabled the expansion of our Colored Glass offerings. These glasses are engineered to withstand the punishing environments of mission-critical applications by offering superior durability, resistance to abrasion, chemical corrosion and thermal shock. They are compatible with a variety of light sources, including white and colored LEDs, plasma, HID, and incandescent.

Not only do our glasses meet our own and customer-specific performance specifications, but our glass formulations are also designed to meet industry and regulatory standards, including:

  • Federal Aviation Administration (FAA)
  • Military Specifications (MIL)
  • International Civil Aviation Organization (ICAO)
  • American Railway Engineering and Maintenance-of-Way Association (AREMA)
  • SAE International (SAE)
  • Institute for Traffic Engineers (ITE)
  • Underwriters Laboratories (UL)
  • Atmosphere Explosives (ATEX)

  • Blue Glass Transmission Graph

    Click here to view blue glass data.

    Glass

    Primary Application

    Industry Specification

    Nominal Thickness (in)

    Light Source

    2001 Signal SAE 0.175 - 0.240 Incandescent
    2003 Signal SAE 0.150 - 0.240 Incandescent
    2004 Aviation EB67D 0.150 - 0.240 LED
    2600 Aviation (Low CTE) ICAO 0.120 - 0.180 Incandescent
    2601 Aviation (Low CTE) ICAO 0.200 - 0.315 Incandescent
    2820 Architectural - 0.200 - 0.240 -
    312X *The glasses in the 312X series were averaged and plotted as one glass in the graph displayed above. They have the same spectral transmission, but at different nominal thickness ranges.
    3121* Aviation SAE AS25050 0.095 - 0.150 Incandescent
    3122* Aviation SAE AS25050 0.120 - 0.190 Incandescent
    3123* Aviation SAE AS25050 0.145 - 0.250 Incandescent
    3124* Aviation SAE AS25050 0.200 - 0.340 Incandescent
    3125* Aviation SAE AS25050 0.210 - 0.300 Incandescent
    3127* Aviation SAE AS25050 0.280 - 0.500 Incandescent
    3128* Aviation SAE AS25050, ICAO 0.325 - 0.575 Incandescent
    3330 Sight Glass - 0.125 - 0.200 -
    3615 Aviation (ICAO) SAE AS25050, ICAO 0.270 - 0.460 Incandescent
    3625 Aviation (High %T) SAE AS25050, ICAO 0.220 - 0.520 LED, Incandescent
    3627 Aviation (High %T) SAE AS25050, ICAO 0.290 - 0.680 LED, Incandescent