Patent ID: 7410264
Filing Date: 2008-08-12
Classification: G02B,G03B,H04N,Y10S

Abstract:
1. An image display apparatus that irradiates light from light sources onto an image display element and forms an optical image based on image signals, the image display apparatus comprising: a light source unit with an LED-based light-emitting section; anamorphic optics which converts a cross-sectional size or shape of the flux of light that formed a light source image of the LED-based light-emitting section, into a size or shape appropriate for an aperture of the portion that permits the flux of light of the light source image to pass through, in an optical system for irradiating light onto the image display element; a first lens array which includes a plurality of lens cells and splits the incident light into a plurality of fluxes in which the incident light is sent from the anamorphic optics; a second lens array which includes a plurality of lens cells and activates the lens cells to project shapes of the associated lens cells of the first lens array onto the image display element; and a polarizing conversion element which includes a plurality of unit prism units and causes the fluxes of light from the second lens array to align in a desired direction of polarization.