Abstract: A method of mounting a light emitting diode (LED) module (100) to a heat sink (102), the method comprising the steps of placing the LED module (100) in a hole (120) in the heat sink (102); and expanding a portion of the LED module (100) such that the LED module (100) is secured to the heat sink (102). The method provides a cost efficient way of securing an LED module to a heat sink where the mount has a high reliability over time.

Abstract: A front projection display system (100) selectively operates in either a “normal” television-replacement mode, which projects a smaller-sized image, or in a large-format “cinema” projection mode with a larger-sized image. A display size selection can be made automatically according to factors such as ambient light level, and/or manually under user control. In response to the display size selection, a controller (140) retrieves appropriate data from memory (145), and controls a projection lens system (130) to display an image on an image projection surface (150) in either a first, larger-sized, format or in a second, smaller-sized format.