Holographic diffuser for back-lit display

摘要: A holographic diffuser for use in conjunction with a back-lit flat-panel display and source of illumination the form one or more tubular lamp segments is recorded so as to receive light from scatter it preferentially along plane perpendicular axis bulbs. In having vertically oriented lamps, scatters substantially horizontal dimension, thus filling gaps intensity between bulbs, which would otherwise be viewed by an observer, conventional diffusers. The high aspect ratio diffusers present invention are preferably formed projecting coherent radiation through mask dimensions functionally related desired final ratio, optional collimating lens being used project that infinity. contact exposure process also described.