IMAGE DISPLAY DEVICE

摘要

An image display device comprises a light-emitting unit (1), an optical fiber (2) through which light emitted from the light-emitting unit (1) propagates, and a plurality of balls (3) disposed so as to be coupled to the optical fiber (2) by evanescent coupling and having an optical transparency. Each of the balls (3) produces an optical mode in which light entering each ball from the optical fiber (2) by the evanescent coupling is confined inside, and are so formed that predetermined resonant frequencies of the balls for producing the optical mode are different from one another, so that an image is displayed by the light emitted from the balls (3). This provides a simply structured image display device having a high response speed and capable of achieving power saving, a high luminance, a wide view angle, and a high contrast.