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US 7,001,025 B2Granted
Projection apparatus with three light source units to output light bundles into an integrating tunnel from a direction nonparallel to output direction
AssigneeInFocus Corporation
InventorT. Scott Engle
Life of this patent
Estimating the term…
Abstract
A projection apparatus having three light source units optically coupled to an integrating tunnel. The three light source units to output three different color light bundles of different wavelengths into the integrating tunnel from a direction nonparallel to the output direction of the integrating tunnel.
Claims29
An illumination module, comprising:
- an integrating tunnel having an output end to output light in an output direction;
- three light source units optically coupled to the integrating tunnel to output three different color light bundles of different wavelengths into the integrating tunnel from a direction nonparallel to the direction of the output direction;
- and
- wherein a most efficient of the three light source units is located furthest away from the output end.
1 more element
An illumination module, comprising:
- an integrating tunnel having an output end to output light in an output direction;
- three light source units optically coupled to the integrating tunnel to output three different color light bundles of different wavelengths into the integrating tunnel from a direction nonparallel to the direction of the output direction;
- and
- wherein a least efficient of the three light source units is located nearest to the output end.
1 more element
A projection system, comprising:
- a projection lens;
- an integrating tunnel optically coupled to the projection lens, the integrating tunnel having an output end to output light in an output direction;
- three light source units optically coupled to the integrating tunnel to output three different color light bundles of different wavelengths into the integrating tunnel from a direction nonparallel to the direction of the output direction;
- and
- wherein a most efficient of the three light source units is located furthest away from the output end.
2 more elements
A projection system, comprising:
- a projection lens;
- an integrating tunnel optically coupled to the projection lens, the integrating tunnel having an output end to output light in an output direction;
- three light source units optically coupled to the integrating tunnel to output three different color light bundles of different wavelengths into the integrating tunnel from a direction nonparallel to the direction of the output direction;
- and
- wherein a least efficient of the three light source units is located nearest to the output end.
2 more elements
In a projection system, a method of operation, comprising:
- receiving pixel data of an image to be projected;
- controlling three light source units to transmit three different color light bundles of different wavelengths into an integrating tunnel from a direction nonparallel to output direction of light outputted by the integrated tunnel, wherein a most efficient of the three light source units is located furthest away from an output end of the integrating tunnel;
- and
- wherein said controlling of three light source units comprises controlling the light sources to alternate in transmitting the different color light bundles at different points in time as needed for the projection of the image.
1 more element
In a projection system, a method of operation, comprising:
- receiving pixel data of an image to be projected;
- controlling three light source units to transmit three different color light bundles of different wavelengths into an integrating tunnel from a direction nonparallel to output direction of light outputted by the integrated tunnel, wherein a least
- efficient of the three light source units is located nearest to an output end of the integrating tunnel;
- and
- wherein said controlling of three light source units comprises controlling the light sources to alternate in transmitting the different color light bundles at different points in time as needed for the projection of the image.
2 more elements
Dependencies are inferred from the claim text.