Borosilicate Glass Flashlamps

borosilicate glass flashlamps

Borosilicate glass or hard glass is suited for flash lamps operating under low average operating power. This includes signal beacons, low power stroboscopes and low power photographic applications such as camera flashes.

There are four borosilicate glasses characterized by their exceptional resistance to the arc and by optical quality.

  • Borosilicate glass B1
    This standard glass is suited for automatic processing ability. We have many tube diameters available.
  • Borosilicate glass B2
    This glass withstands approximately 30% more power than B1 but requires manual processing
  • Borosilicate glass B3
    Features UV transparency with automatic processing ability similar to B1
  • Borosilicate glass B4
    This glass allows up to double the flash energy in photoflash applications compared to B1 with similar automatic processing ability.

Hard glass can be coated with a yellow layer that absorbs the excessive blue radiation for photograpic use. The color temperature is reduced by 1000 to 2000 K.

For special applications, flash tubes can be colored with a uniform and crack-free colored layer. Typical colors are red, blue, amber, green and purple.