IP Library › Granted Patent US 12,455,411
Granted Patent B2
US 12,455,411 · App. 18/793,252 · Granted Oct 28, 2025

Light source device and projector

Inventors: Yuichiro Iwama (Azumino, JP); Norio Imaoka (Takamori-machi, JP)
Assignee: SEIKO EPSON CORPORATION
G02B6/0093G02B6/0003G02B6/0068G02B6/0085G02B21/16
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Quick Facts
Patent No.
US 12,455,411
App. No.
18/793,252
Granted
Oct 28, 2025
Kind
B2
Abstract

A light source device including: a support member includes a groove in which a light guide member is disposed, a light source substrate and the support member are in contact with each other with a convex portion, and the convex portion is disposed on at least one of an opposed surface opposed to a first surface of the light source substrate and the first surface of the light source substrate to separate a light emitting element from the support member and a light guide member.

Claims (25)

1. A projector comprising:

a light source including a light source substrate having a first surface and a second surface opposite to the first surface, and a light emitter disposed on the first surface of the light source substrate;

a light guide guiding light emitted from the light emitter of the light source;

a support supporting the light guide in a groove;

a fixator provided to an outer peripheral edge portion of the light source substrate for fixing the light source and the support to each other so that the light emitter disposed on the first surface of the light source substrate and the light guide are opposed to each other; and

a convex portion located at an inner peripheral side of the light source substrate with respect to the fixator, wherein

the support includes the groove in which the light guide is disposed,

the light source substrate and the support are in contact with each other and the convex portion,

the convex portion is disposed on at least one of an opposed surface opposed to the first surface of the light source substrate and the first surface of the light source substrate to separate the light emitter from the support and the light guide,

the convex portion is provided to the support,

the light source substrate of the light source includes a base, a first insulating layer disposed on one surface of the base, an interconnection layer stacked at an opposite side of the first insulating layer to the base, and a second insulating layer stacked at an opposite side of the first insulating layer to the base so as to cover at least a part of the interconnection layer, and

the convex portion is in contact with the first insulating layer.

2. The projector according to claim 1 , further comprising:

a heat dissipator fixed to the second surface of the light source substrate of the light source.

3. The projector according to claim 1 , further comprising:

a positional restrictor for pressing the light guide against the support, wherein

the convex portion separates the pressing member and the light source from each other.

4. The projector according to claim 1 , wherein

the convex portion is disposed at a position where the convex portion does not overlap the light emitter in a plan view in a normal direction of the opposed surface of the support and is not in contact with the light guide.

5. The projector according to claim 1 , wherein

the light emitter emits a first light having a first wavelength band, and

the light guide is a wavelength converter that includes a phosphor, and the light guide converts the first light emitted from the light emitter into a second light having a second wavelength band different from the first wavelength band.

6. The projector according to claim 1 , wherein

a light modulation device is configured to modulate light emitted from the projector in accordance with image information to form a modulated emitted light; and

a projection optical device configured to project the modulated emitted light.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 2, 2024
From: IWAMA, YUICHIRO; IMAOKA, NORIO
To: SEIKO EPSON CORPORATION
Reel/Frame 068169/0086 →
Continuity (1)
Related Publication 20250044501A1 · Feb 6, 2025
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