LUMINESCENT DEVICE

摘要

[Problem];To collect emitted light while sufficiently improving light extraction efficiency of a light emitting element, and to make it easy for the emitted light to enter the optical system of a latter stage.;[Solution];A light emitting element and a taper rod having the area of its emission plane larger than that of its incidence plane are provided, and a transparent resin is filled between the light emitting element and the taper rod. At least part of the taper rod has a refractive index higher than that of the transparent resin.

主权项

1. A luminescent device, comprising:
a light emitting element; a taper rod having an area of an emission plane larger than an area of an incidence plane; a transparent resin being filled between said light emitting element and said taper rod; and at least part of said taper rod having a refractive index higher than a refractive index of said transparent resin.