US 2026/0244086 A1Published application

Light source apparatus and projection-type image display apparatus

AssigneePanasonic Projector & Display Corporation

InventorsTakashi IKEDA, Manabu Okuno, Michihiro Okuda, Yusaku Nishikawa

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Abstract

A light source apparatus includes a light source, a first wavelength selection element, a light-collecting element, a second wavelength selection element, a wavelength conversion element. The first wavelength selection element is disposed at a position where the first light is incident and having a reflective portion that reflects the first light and a transmissive portion that transmits the first light, the first wavelength selection element transmitting a second light. The light-collecting element is disposed at a position to receive the first light reflected by the first wavelength selection element. The second wavelength selection element transmits or reflects, depending on its rotation state, the first light collected by the light-collecting element. The first light incidence on the second wavelength selection element and the first light reflected by the second wavelength selection element pass through spatially different positions in the light-collecting element.

Claims18

Dependent claims

A light source apparatus comprising:

a light source that emits a first light having a first wavelength range;
a first wavelength selection element disposed at a position where the first light is incident and having a reflective portion that reflects the first light and a transmissive portion that transmits the first light, the first wavelength selection element transmitting a second light having a second wavelength range different from the first wavelength range;
a light-collecting element disposed at a position to receive the first light reflected by the first wavelength selection element;
a second wavelength selection element that transmits or reflects, depending on its rotation state, the first light collected by the light-collecting element;
and
a wavelength conversion element having a wavelength conversion segment that wavelength-converts the first light reflected by the second wavelength selection element into the second light, wherein the first light incidence on the second wavelength selection element and the first light reflected by the second wavelength selection element pass through spatially different positions in the light-collecting element.

3 more elements

A light source apparatus comprising:

a light source that emits a first light having a first wavelength range;
a first wavelength selection element disposed at a position where the first light is incident and having a reflective portion that reflects the first light and a transmissive portion that transmits the first light, the first wavelength selection element reflecting a second light having a second wavelength range different from the first wavelength range;
a light-collecting element disposed at a position to receive light transmitted through the first wavelength selection element;
a second wavelength selection element that transmits or reflects, depending on its rotation state, light collected by the light-collecting element;
and
a wavelength conversion element having a wavelength conversion segment that wavelength-converts the first light reflected by the second wavelength selection element into the second light, wherein
the first light incidence on the second wavelength selection element and the first light reflected by the second wavelength selection element pass through spatially different positions in the light-collecting element.

4 more elements

Dependencies are inferred from the claim text.