公开(公告)号：US11022869B2

公开(公告)日：2021-06-01

申请号：US16690537

申请日：2019-11-21

Applicant: SEIKO EPSON CORPORATION

Inventor： Hidefumi Sakata ,  Junichi Suzuki ,  Shingo Komiyama ,  Yuichiro Iwama

IPC: G03B21/20 ,  F21V8/00 ,  F21Y115/30

Abstract: A light source apparatus according to an aspect of the present disclosure includes a first light source that emits first light, a second light source that emits second light, a light guide that causes the first light emitted from the first light source to propagate, a wavelength converter containing a phosphor that emits fluorescence when excited with the second light emitted from the second light source, and a light combiner that combines the first light having exited out of the light guide with the fluorescence having exited out of the wavelength converter. The light guide and the wavelength converter are disposed side by side. The light guide has a first end section and a second end section. The wavelength converter has a third end section and a fourth end section. The first light enters the light guide via the first end section thereof.

公开(公告)号：US11187970B2

公开(公告)日：2021-11-30

申请号：US16724707

申请日：2019-12-23

Applicant: SEIKO EPSON CORPORATION

Inventor： Junichi Suzuki ,  Hidefumi Sakata ,  Yuichiro Iwama ,  Shingo Komiyama

IPC: F21V9/30 ,  G03B21/20 ,  F21V9/32 ,  F21V8/00 ,  G02F1/13357

Abstract: A light source apparatus includes a light source section emitting first light having a first wavelength band, a light guide propagating part of the first light, a wavelength converter disposed side by side with the light guide and including a phosphor emitting second light having a second wavelength band when excited by another part of the first light, and a light combiner that combines the first light exiting the light guide with the second light exiting the wavelength converter. The light source section faces the light guide and the wavelength converter.

公开(公告)号：US11906888B2

公开(公告)日：2024-02-20

申请号：US17212710

申请日：2021-03-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Shigekazu Aoki ,  Shingo Komiyama ,  Junichi Suzuki

IPC: G03B21/20 ,  H04N9/31 ,  G03B21/16

CPC classification number: G03B21/2013 ,  G03B21/16 ,  G03B21/204 ,  H04N9/3161 ,  H04N9/3164

Abstract: A light source apparatus includes a first light source that emits first light belonging to a first wavelength band, a second light source that emits second light belonging to a second wavelength band, a wavelength converter that contains a phosphor and converts the first light into third light belonging to a third wavelength band different from the first, a first heat dissipation member that includes a plurality of first fins and dissipates heat generated by the first light source, a second heat dissipation member that includes a plurality of second fins and dissipates heat generated by the second light source, and a first direction wherein first channels, specified by the gaps between the first fins and along which a refrigerant is supplied, extend coincides with a second direction wherein second channels, specified by the gaps between the second fins and along which the refrigerant is supplied, extend.

公开(公告)号：US11175574B2

公开(公告)日：2021-11-16

申请号：US16724506

申请日：2019-12-23

Applicant: SEIKO EPSON CORPORATION

Inventor： Junichi Suzuki ,  Hidefumi Sakata ,  Shingo Komiyama

IPC: G03B21/20 ,  H04N9/31 ,  F21V8/00 ,  G02B27/14

Abstract: A light source apparatus according to an aspect of the present disclosure includes a light source section that emits first light and excitation light having a first wavelength band, a light guide that causes the first light emitted from the light source section to propagate, a wavelength converter including a phosphor that emits second light having a wavelength band different from the wavelength band of the excitation light when the wavelength converter is excited with the excitation light emitted from the light source section, and a light combiner that combines the first light having exited out of the light guide with the second light having exited out of the wavelength converter. The light guide and the wavelength converter are disposed side by side, and a light transmissive member that transmits the first light is provided between the light source section and the light guide.

公开(公告)号：US11347141B2

公开(公告)日：2022-05-31

申请号：US17208600

申请日：2021-03-22

Applicant: SEIKO EPSON CORPORATION

Inventor： Junichi Suzuki ,  Hidefumi Sakata ,  Shingo Komiyama

IPC: G03B33/12 ,  G03B21/20 ,  G02B27/28

Abstract: A light source device according to the present disclosure includes a first light source, a second light source, a wavelength conversion section, a polarization splitting/combining element, a dichroic mirror for reflecting second light and transmitting third light emitted from the wavelength conversion section, a retardation plate, a diffusion section, and a condensing optical section. Condensing optical section has a first end part, a second end part, and a reflecting part. Second light proceeding via the polarization splitting/combining element is transmitted through the condensing optical section from the second end part toward the first end part, and then enters the dichroic mirror. Second light reflected by the dichroic mirror passes through the condensing optical section and then enters the polarization splitting/combining element. Third light passes through the condensing optical section and then enters the polarization splitting/combining element. Polarization splitting/combining element combines the second light and the third light with each other.

公开(公告)号：US10921698B2

公开(公告)日：2021-02-16

申请号：US16737976

申请日：2020-01-09

Applicant: SEIKO EPSON CORPORATION

Inventor： Hidefumi Sakata ,  Junichi Suzuki ,  Shingo Komiyama

IPC: G03B21/20

Abstract: A light source device according to the present disclosure includes a light source configured to emit excitation light, a first rod part including a phosphor and configured to emit fluorescence in response to incidence of the excitation light, a second rod part located in parallel to the first rod part, including a phosphor, and configured to emit fluorescence in response to incidence of the excitation light, a first reflecting film disposed so as to be opposed to a tilted surface formed in an end part of the first rod part, and a second reflecting film disposed so as to be opposed to a tilted surface formed in an end part of the second rod part.