Patent ID: 7733310

Claim:
A device, comprising a display screen and an optical module that includes one or more lasers producing excitation light of one or more optical excitation beams modulated to carry optical pulses carrying images and scans the excitation light onto the display screen in a two dimensional pattern to direct the optical pulses at different locations on the display screen to display the images, wherein the display screen further comprises: a fluorescent layer that absorbs excitation light to emit visible light, comprises a plurality of different fluorescent materials which absorb the excitation light to emit light at different visible wavelengths which are different in wavelength from the excitation light, and is patterned into parallel stripes, wherein three adjacent stripes are made of three different fluorescent materials and emit light at three different visible wavelengths, respectively, and define a color pixel dimension of the display screen, a first layer on a first side of the fluorescent layer to transmit the excitation light and to reflect the visible light, the first layer comprising a composite film stack of multiple polymer films that are coextruded to have alternating high and low refractive indices to form an optical interference filter, a second layer on a second side of the fluorescent layer to transmit the visible light and to block the excitation light, and a Fresnel lens located on the first side of the fluorescent layer to direct the excitation light of the one or more optical excitation beams scanned by the optical module at different incident angles at different locations on the display screen to be approximately normal to the first layer and the fluorescent layer.