The full name of TIR is "Total Internal Reflection". The principle of TIR wedge prism technology is to realize the control and adjustment of light through multiple total internal reflections of light inside the prism, thereby greatly improving optical utilization and light efficiency.

The light efficiency of traditional reflective bowls is only 40% low. If you want to increase the brightness, you can only increase the power. But high power creates more temperature. High Temperature can reduce the bi-led projector lens lifespan.

TIR light wedge prism light efficiency up to 80%. 100% higher than traditional reflective bowls. TIR tech keeps the same power and higher brightness.

Royalin bi-led projector lens GT60 is the first generation bi-led projector lens to adopt the TIR tech.

The light is emitted from the lamp beads at the bottom into the prism, and then collected at the bottom of the prism, and then all the collected light is hit on the reflective surface. Finally, reflect all the light. The light is fully utilized throughout the process. In this way, the bifocal lens using TIR technology is twice as bright as the traditional lens, whether it is a low beam or a high beam.