All about glass > Light Transmission

Optical properties of glass products are expressed by:

  • light transmission TL
     
  • light reflexion  RL 

     
  • light absorption  AL

TL + RL + AL = 100%











Light transmission TL is the proportion of the visible spectrum which is transmitted through the glass
expressed as a percentage%

For a greater light transmission an extra-clear or low-iron glass may be necessary :
 

thickness in  mm 8 10 12 15 19
low-iron glass 91 91 91 90 90
traditional float glass 87 86 85 84 82