Electro-optical device having reduced size and improved light utilization efficiency and electronic using the same

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 emits 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 light-emitting elements, the microlenses of the microlens array, and the pixels and the transmissive windows of the optical modulation panel being arranged 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={Ps·Pa/(Ps+Pa)}·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.

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 light-emitting elements, the microlenses of the microlens array, and the pixels and the transmissive windows of the optical modulation panel being arranged so that
• the microlenses of the microlens array collect light from the light-emitting elements that emit red light at the transmissive windows corresponding to the pixels for red light, collect light from the light-emitting elements that emit green light at the transmissive windows corresponding to the pixels for green light, and collect light from the light-emitting elements that emit 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={Ps·Pa/(Ps+Pa)}·n (n is a natural number) La/Ls=Pa/Ps
• where Ps represents a Ditch 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.