Title:
LIGHT EMITTING DEVICE AND PROJECTOR
Document Type and Number:
Japanese Patent JP2021057442
Kind Code:
A
Abstract:
To provide a light emitting device capable of reducing the amount of injection current.SOLUTION: A light emitting device includes an excitation light source, and a light emitting light source. The light emitting light source includes a substrate, a photonic crystal structure provided on the substrate and having a light emitting layer, and an electrode configured to inject an electrical current into the light emitting layer. The excitation light source irradiates the light emitting layer with excitation light. The light emitting layer generates light due to the electrical current injected from the electrode and the excitation light. In the photonic crystal structure, the light emitted in the light emitting layer resonates in an in-plane direction of the substrate, and a laser beam is emitted in a normal direction of the substrate.SELECTED DRAWING: Figure 1
Inventors:
NAKAJIMA YOSHIKI
Application Number:
JP2019178863A
Publication Date:
April 08, 2021
Filing Date:
September 30, 2019
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
H01S5/18; G03B21/00; G03B21/14
Attorney, Agent or Firm:
Kazuaki Watanabe
Satoshi Nakai
Hiroki Matsuoka
Satoshi Nakai
Hiroki Matsuoka