Patent ID: 6057899
Filing Date: 2000-05-02
Classification: G02F,G03B

Abstract:
A lighting optical system for irradiating a light into a display panel, comprising:a light source for emitting a light;a reflector for reflecting the emitted light;a first integrator lens unit disposed at a place where a surface thereof crosses an optical axis of the reflected light, the first integrator lens unit having a plurality of micro lenses arranged in a matrix, the first integrator lens unit dividing at least the reflected light into a plurality of light beams corresponding to the micro lenses respectively, an area of at least one of the micro lenses disposed at a center portion of the first integrator lens unit being larger than an area of any one of the micro lenses disposed in the first integrator lens unit other than said at least one; anda second integrator lens unit disposed at a place where a surface thereof crosses an optical axis of each of the divided light beams, the second integrator lens unit having a plurality of micro lenses arranged in a matrix, the second integrator lens unit for condensing the divided light beams so that the condensed light beams are irradiated into the display panel.