초록 ▼

An improved display system includes a plurality of light sources which are electroluminescent devices, such as light emitting diodes. The light emitting diodes have an intensity of 0.5 with a light dispersion angle of 24.degree. or less. An optical device creates a plurality of dispersion patterns f

An improved display system includes a plurality of light sources which are electroluminescent devices, such as light emitting diodes. The light emitting diodes have an intensity of 0.5 with a light dispersion angle of 24.degree. or less. An optical device creates a plurality of dispersion patterns from the light emitted by each of the light emitting diodes. The dispersion patterns have a viewing angle of 50.degree. or more. The optical device includes a plurality of linear grooves having side surfaces which cooperate to create a plurality of separate dispersion patterns from the light emitted by each light emitting diode. The dispersion patterns from the light emitted by one light emitting diode are disposed along a line which extends perpendicular to the longitudinal axes of the grooves. The longitudinal axes of the grooves may extend transverse to sides of a rectangular array of light emitting diodes to minimize overlapping of the dispersion patterns and maximize the uniformity with which light is transmitted from the optical device to an outer side of a display panel.

대표청구항 ▼

[ Having described the invention, the following is claimed:] [1.] A display system comprising a base, a plurality of electroluminescent devices mounted on said base, each of said electroluminescent devices emitting light having an intensity of 0.5 with a light dispersion angle of 24.degree. or less,

[ Having described the invention, the following is claimed:] [1.] A display system comprising a base, a plurality of electroluminescent devices mounted on said base, each of said electroluminescent devices emitting light having an intensity of 0.5 with a light dispersion angle of 24.degree. or less, a display panel connected with said base and having an outer side which is visible to an observer and an inner side which faces toward said electroluminescent devices, and optical means disposed between the inner side of said display panel and said plurality of electroluminescent devices for creating a plurality of dispersion patterns which are projected onto the inner side of said display panel, said optical means being effective to create a plurality of dispersion patterns from the light emitted by each electroluminescent device with each of the dispersion patterns having a viewing angle of 50.degree. or more at the inner side of said display panel.