A lighting device includes a plurality of self-luminous elements formed on
a substrate and emitting different wavelengths of light from each other,
a hemispherical lens structure formed on the substrate to cover the
self-luminous elements, and a plurality of translucent spherical
particles covering a surface of the lens structure. Light emitted from
the self-luminous elements passes through the lens structure and enters
the translucent spherical particles where its direction is largely
inclined to scatter due to a difference in refractive index between the
translucent spherical particles and air. Consequently, different
wavelengths of light from the self-luminous elements are mixed to produce
a desired color of light.