Optical system
AssigneeDelta Electronics, Inc.
InventorBor Wang
Life of this patent
Estimating the term…
Abstract
An optical system for a projector is provided, which includes a solid-state light source module, an optical module, a phosphor element and a light relay module which are disposed sequentially. The light source module can generate a first beam, while the optical module can relay and uniformize the first beam so that the first beam is uniformly incident on the phosphor element. The optical module also makes the light spot of the first beam incident on the phosphor element into a predetermined shape and area, so that the phosphor element will emit a second beam by an emitting area. The light relay module can receive a part of the second beam, and the part of the second beam has a solid angle. An Etendue defined by the solid angle and the emitting area may be identical to the Etendue of a light modulator of the projector.
Claims15
An optical system for a projector, comprising:
- a solid-state light source module for generating a first light beam;
- an optical module, disposed at a side of the solid-state light source module, wherein the optical module comprises two lens arrays and at least one relay lens;
- a phosphor element, disposed at a side of the optical module, wherein the optical module is disposed between the solid-state light source module and the phosphor element in a light path;
- and
- a light relay module, disposed at a side of the phosphor element, wherein the phosphor element is disposed between the optical module and the light relay module in the light path;
- wherein, the optical module is used for relaying and uniformizing the first light beam so that the first light beam is uniformly incident on the phosphor element, the optical module is also used for making a light spot of the first light beam incident on the phosphor element have a predetermined shape and a predetermined area so that the phosphor element emits a second light beam in an emitting area;
- wherein, the light relay module is used for receiving a part of the second light beam, the part of the second light beam has a solid angle, and an Etendue defined by the solid angle and the emitting area is substantially identical to an Etendue of a light modulator of the projector.
An optical system for a projector, comprising:
- a solid-state light source module for generating a first light beam;
- an optical module, disposed at a side of the solid-state light source module, wherein the optical module comprises an integration rod and at least one relay lens;
- a phosphor element, disposed at a side of the optical module, wherein the optical module is disposed between the solid-state light source module and the phosphor element in a light path;
- and
- a light relay module, disposed at a side of the phosphor element, wherein the phosphor element is disposed between the optical module and the light relay module in the light path;
- wherein, the optical module is used for relaying and uniformizing the first light beam so that the first light beam is uniformly incident on the phosphor element, the optical module is also used for making a light spot of the first light beam incident on the phosphor element have a predetermined shape and a predetermined area so that the phosphor element emits a second light beam in an emitting area;
- wherein, the light relay module is used for receiving a part of the second light beam, the part of the second light beam has a solid angle, and an Etendue defined by the solid angle and the emitting area is substantially identical to an Etendue of a light modulator of the projector;
- wherein a shape of an exit of the integration rod is identical to the light spot of the first light beam incident on the phosphor element.
Dependencies are inferred from the claim text.