Image display device which reduces mutual interference of light reflected by a screen

摘要

An image display device which reduces speckles in an image display device using a laser source includes: a laser source which emits excitation light; a collecting lens which collects the excitation light; a deflecting element which scans the excitation light collected by the collecting lens; and a light conversion panel which converts a wavelength of the excitation light scanned by the deflecting element and emits fluorescence, wherein the light conversion panel includes a plurality of phosphor layers which are planarly disposed, absorb the excitation light, and emit the fluorescence.

主权项

1. An image display device comprising:
a laser source which emits laser light having a single center wavelength; a collecting lens which is disposed on a light-emission side of the laser source and collects the laser light; a deflecting element which is disposed on a light-collection side of the collecting lens and scans the laser light; a light conversion panel which receives the laser light scanned, converts a wavelength of the laser light, and emits multi-colored fluorescence; and a projector lens which projects the light emitted from the light conversion panel, wherein the light conversion panel includes a plurality of phosphor layers which are planarly disposed, absorb the laser light having the single center wavelength, and emit the multi-colored fluorescence, wherein the light conversion panel includes a first optical element which guides the laser light to the phosphor layers, wherein the light conversion panel includes a second optical element which transmits the fluorescence, wherein the light conversion panel further includes a transparent substrate which is disposed between the phosphor layers and the first optical element and transmits the laser light, and the first optical element is a first microlens array and the second optical element is a second microlens array, and the phosphor layers including a red layer, a green layer, and a blue layer, the red layer absorbs the laser light and emits red light, the green layer absorbs the laser light and emits green light, and the blue layer absorbs the laser light and emits blue light, the red layer, the green layer, and the blue layer are each linearly disposed, the first microlens array including a plurality of microlenses formed in dots, the second microlens array including a plurality of microlenses formed in dots, the microlenses included in the first microlens array and the microlenses included in the second microlens array are disposed on a plane in correspondence with the lines of the phosphor layers, three microlenses included in the first microlens array and three microlenses included in the second microlens array disposed in a direction perpendicular to the straight lines correspond to three colors and make up a full-colored unit pixel.