Also spelled roundel. Circular glass color media used in compartmentalized striplights or borderlights, sometimes called "X-rays".

Kopp Glass was/is probably the most common manufacturer.

Colors are limited to Primary Red/Blu/Grn, Amber, and Clear. Diameter varies from about 3" to 8"; the most common is 5-5/8" which fit the Altman R40 striplight. Kliegl Bros., Hub Electric Company, and Major Equipment Company also produced fixtures that used roundels.

While some may refer to them as lenses, rondels have no magnifying power, although are available in a variety of finishes: smooth, stippled (diffusion), and 50° spread.

An exception is the Corona PAR3 and PAR4 fixtures by L&E:
If you prefer to use roundels, we offer them specially designed for use in this fixture in a Wide Beam spread. These roundels are available in Red, Blue, Green, and Amber.

This page has been seen 1,258 times.

Industry Advertising

Recent Activity

Readability Information

An automated review of this page attempts to determine its readability in English (US). The page contains roughly 136 words across 10 sentences.
Readability score
Readability score: 37.51
Grade level
For the information in this page to be accessible to the widest audience of readers, both a high readability score and a low grade level are ideal.

Icon Legend

  • Normal page
  • Color code

    • Content has new updates
    • Content has no updates

CB Advertising

Sign up to Advertise Today