US 2026/0211308 A1Published application

Illumination system and projection device

AssigneeCoretronic Corporation

InventorYu-Hsiang Deng

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Abstract

Provided is an illumination system, which includes a light source module, an optical path switching module, and a wavelength conversion layer. The light source module includes a first light source and a second light source, respectively configured to emit a first light beam and a second light beam. The optical path switching module is disposed in a transmission path of the first light beam, and includes a driving element and an optical element. The driving element is configured to drive the optical element to move to allow the optical path switching module to switch between a first state and a second state to change the transmission path of the first light beam. The wavelength conversion layer is disposed in the transmission path of the first light beam from the first light source or the optical path switching module. Also provided is a projection device.

Claims19

Dependent claims

An illumination system, comprising:

a light source module, comprising:
a first light source, configured to emit a first light beam;
and
a second light source, configured to emit a second light beam, wherein the first light beam exits from the light source module along a first direction, the second light beam exits from the light source module along a second direction, and the first direction is different from the second direction;
an optical path switching module, disposed in a transmission path of the first light beam from the first light source, wherein the optical path switching module comprises a driving element and an optical element, and the driving element is configured to generate motion of the optical element, so that the optical path switching module switches between a first state and a second state to change the transmission path of the first light beam;
and
a wavelength conversion layer, disposed in the transmission path of the first light beam from the first light source or the optical path switching module, and configured to convert the first light beam into a conversion beam,
wherein when the optical path switching module is in the first state, the wavelength conversion layer sequentially enters the transmission path of the first light beam, and when the optical path switching module is in the second state, the wavelength conversion layer is not positioned in the transmission path of the first light beam.

5 more elements

A projection device, comprising:

an illumination system, configured to provide an illumination beam, and the illumination system comprising:
a light source module, comprising
a first light source, configured to emit a first light beam;
and
a second light source, configured to emit a second light beam, wherein the first light beam exits from the light source module along a first direction, the second light beam exits from the light source module along a second direction, and the first direction is different from the second direction;
an optical path switching module, disposed in a transmission path of the first light beam from the first light source, wherein the optical path switching module comprises a driving element and an optical element, the driving element is configured to generate motion of the optical element, so that the optical path switching module switches between a first state and a second state to change the transmission path of the first light beam;
and
a wavelength conversion layer, disposed in the transmission path of the first light beam from the first light source or the optical path switching module, wherein the wavelength conversion layer is configured to convert the first light beam into a conversion beam, wherein when the optical path switching module is in the first state, the wavelength conversion layer sequentially enters the transmission path of the first light beam, and when the optical path switching module is in the second state, the wavelength conversion layer is not positioned in the transmission path of the first light beam;
a light valve, disposed in a transmission path of the illumination beam, and configured to convert the illumination beam into an image beam, wherein the illumination beam comprises at least one of the first light beam, the second light beam and the conversion beam;
and
a projection lens, disposed in a transmission path of the image beam, and configured to project the image beam out of the projection device.

8 more elements

Dependencies are inferred from the claim text.