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US 11,635,673 B2Granted
Luminescent material protection mechanism, light source unit, and projector
AssigneeCasio Computer Co., Ltd.
InventorMasahiro Ogawa
Life of this patent
Estimating the term…
Abstract
A luminescent light emitting device includes a base, a luminescent material layer provided on the base, a heat dissipating rib provided on an outer circumferential side of the luminescent material layer in such a manner as to rise erect from the base, and a collective lens fixed to the heat dissipating rib to seal in the luminescent material layer.
Claims24
A luminescent material protection mechanism comprising:
- a base;
- a luminescent material layer provided on a surface of the base;
- a cylindrical casing provided on the outer circumferential side of the luminescent material layer in such a manner as to rise erect from the surface of the base;
- and
- a collective lens fixed to the cylindrical casing to seal in the luminescent material layer,
- wherein the cylindrical casing has a heat dissipation rib provided so as to protrude from an outer circumferential surface,
- wherein the luminescent material layer emits luminescent light excited by excitation light incident from a light source via the collective lens toward the collective lens,
- wherein the light source is not disposed between the luminescent material layer and the base, and
- wherein a length from the surface of the base to a distal end portion of the cylindrical casing is longer than a length from the surface of the base to an apex of an emerging surface of the collective lens.
6 more elements
A light source unit comprising:
- an excitation light shining device for emitting excitation light;
- and
- a luminescent material protection mechanism,
- wherein the luminescent material protection mechanism comprises:
- a base;
- a luminescent material layer provided on a surface of the base;
- a cylindrical casing provided on the outer circumferential side of the luminescent material layer in such a manner as to rise erect from the surface of the base;
- and
- a collective lens fixed to the cylindrical casing to seal in the luminescent material layer,
- wherein the cylindrical casing has a heat dissipation rib provided so as to protrude from an outer circumferential surface,
- wherein the luminescent material layer emits luminescent light excited by the excitation light incident from the light source via the collective lens toward the collective lens,
- wherein the light source is not disposed between the luminescent material layer and the base, and
- wherein a length from the surface of the base to a distal end portion of the cylindrical casing is longer than a length from the surface of the base to an apex of an emerging surface of the collective lens.
10 more elements
Dependencies are inferred from the claim text.