Epson’s E-TORL lamp’s innovative design makes it smaller, cooler running, more efficient and brighter than an ordinary lamp.

As can be seen in the comparison image, light emitted from the burner’s electrodes hits the reflector and is reflected into the optic lenses to pass on to the LCD panels (3x) for projection. An ordinary lamps parabola-shaped reflector actually leaks a sizeable portion of the lamps light rather than reflecting it into the optical train.

With their new E-TORL lamp design, Epson have replaced the parabolic reflector with an elliptical reflector combined with a twin sub-reflector unit which collects light which would be otherwise lost and redirects it back to the rear elliptical reflector and into the optics. This design change has achieved a 20% improvement in efficiency making the light output brighter and reducing the waste heat which resulted from lost light in the ordinary lamp design.

Resources

Projection Screen Selection Guide

Tips for Extending Projector Lamp Life

Guide to Replacement Projector Lamps and Bulbs