Title:
波長変換素子、光源装置およびプロジェクター
Document Type and Number:
Japanese Patent JP6977285
Kind Code:
B2
Abstract:
A wavelength conversion element according to an aspect of the invention includes a wavelength conversion section having a first surface, a reflection section having a reflection surface that reflects the fluorescence, a light-transparent bonding section that bonds the wavelength conversion section to the reflection section, and a refractive index interface which is provided between the first surface and the reflection surface and where a first medium and a second medium having refractive indices different from each other are in contact with each other. The refractive index of the first medium is higher than the refractive index of the second medium, and regarding the fluorescence traveling from the wavelength conversion section toward the reflection section, the angular distribution of the fluorescence having passed through the refractive index interface is narrower than the angular distribution of the fluorescence before passing through the refractive index interface.
Inventors:
Yoshitaka Ito
Application Number:
JP2017063251A
Publication Date:
December 08, 2021
Filing Date:
March 28, 2017
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G03B21/14; F21S2/00; H04N9/31
Domestic Patent References:
| JP2015119046A | ||||
| JP2016114728A | ||||
| JP2012027052A | ||||
| JP2003330111A | ||||
| JP2016099566A | ||||
| JP2015050124A | ||||
| JP2016070947A | ||||
| JP2017040905A | ||||
| JP2016136184A |
Foreign References:
| US20160091712 | ||||
| EP2966502A1 |
Attorney, Agent or Firm:
Yasushi Matsunuma
Kazunori Onami
Hiroyuki Matsumoto
Akio Sato
Masatake Shiga
Yoshifumi Saeki
Kazunori Onami
Hiroyuki Matsumoto
Akio Sato
Masatake Shiga
Yoshifumi Saeki