With WPT™ it is possible to maintain a projector’s white point integrity whilst simultaneously adjusting RGB Power and iris for contrast and black level enhancement. All Norxe projectors feature WPT™ as standard.
A mechanical iris in the light path can be used to efficiently improve the black level and contrast performance in a projector. Sacrificing brightness for contrast can be a rewarding trade-off in dusk-to-dawn applications. Closing the Iris in night scenes will improve contrast and reduce brightness. In daylight scenes the aperture can be re-opened, projecting more brightness onto the screen surface.
The true solid state illumination in a Norxe projector consists of three separate illumination sources, one for each of the primary colors; red, green and blue. The sum of the primary colors make up the projectors white point. As the aperture closes in, the light from the primaries are cut off at different angles. This creates a change in the
white point, as the delicate balance between the red, green and blue light is shifted.
Depending on the characteristics of each projector, the shift in the white point can be unpredictable and may drift towards any of the primaries. Seamless multi-channel systems are dependent on a good color balance between the channels. WPT™ enables the use of an iris for contrast enhancements in single and multi-channel systems without compromising the color balance.
Reduce the light, keep the white.