Surface light-emitting device

Abstract

[Problem] To make it possible to perform complex optical path control inside a device. [Solution] A surface light-emitting device includes: an active layer; a first reflector that reflects light emitted by the active layer and propagating in a direction of a light-emitting surface; a second reflector that reflects light emitted by the active layer and propagating in a direction opposite from the light-emitting surface; and an insulating film disposed at least one of between the active layer and the first reflector and between the active layer and the second reflector, at least one of a film thickness or a refractive index of the insulating film changing continuously or in stages within a plane.

Dependencies are inferred from the claim text.