Patent ID: 6788467
Filing Date: 2004-09-07
Classification: G02B,G02F

Abstract:
An electro-optical device, comprising:a dot-like light source array in which a plurality of light-emitting elements that emit red light, a plurality of light-emitting elements that emit green light, and a plurality of light-emitting elements that emit blue light are arranged; a microlens array in which a plurality of microlenses are arranged; and an optical modulation panel having a plurality of pixels for red light, a plurality of pixels for green light, a plurality of pixels for blue light, and a plurality of transmissive windows corresponding to the pixels; the electro-optical device being configured so that the microlens array collects light from the light-emitting elements that emit red light at the transmissive windows corresponding to the pixels for red light, light from the light-emitting elements that emits green light at the transmissive windows corresponding to the pixels for green light, and light from the light-emitting elements that emits blue light at the transmissive windows corresponding to the pixels for blue light,-and the light from one light-emitting element crosses paths with the light from another light-emitting element between the light-emitting elements and the transmissive windows so as to be focused at two or more transmissive windows, the dot-like light source array including a plurality of dot-like light source units, each of the dot-like light source units having at least one light-emitting element that emits red light, at least one light-emitting element that emits green light, and at least one light-emitting element that emits blue light, the optical modulation panel including an optical modulation unit array in which a plurality of optical modulation units are arranged, each of the optical modulation units having at least one pixel for red light and a corresponding transmissive window, at least one pixel for green light and a corresponding transmissive window, and at least one pixel for blue light and a corresponding transmissive window, and the electro-optical device being configured so that conditions given by the following equations are satisfied: PL={PsÂ·Pa/(Ps+Pa)}Â·n (n is a natural number) La/Ls=Pa/Ps where Ps represents a pitch of the dot-like light source units, Pa represents a pitch of the optical modulation units, PL represents a pitch of the microlenses of the microlens array, Ls represents an optical distance between the light-emitting elements and the microlens array, and La represents an optical distance between the microlens array and the transmissive windows of the optical modulation panel.