Back to results
US 7,244,031 B2Granted
Light source arrangement
AssigneeHewlett-Packard Development Company, L.P.
InventorsStephan R. Clark, Anurag Gupta
Life of this patent
Estimating the term…
Abstract
A light source arrangement has a first light source, a second light source and a dichroic mirror. The dichroic mirror is disposed with the first and second light sources and configured to reflect a predetermined portion of the light emitted from the first light source and to transmit the remaining portion. The dichroic mirror is also configured to reflect light emitted from the second light source so that it propagates in the same direction as the remaining portion of the light from the first light source which is transmitted through the dichroic mirror.
Claims38
A light source arrangement comprising:
- a first light source;
- a second light source;
- a dichroic mirror disposed with the first light source and second light source and configured to:
- reflect a predetermined portion of the light emitted from the first light source and to transmit the remaining portion;
- and
- reflect light emitted from the second light source so that it propagates in the same direction as the remaining portion of the light from the first light source which is transmitted through the dichroic mirror;
- and
- an etalon disposed between the first light source and the dichroic mirror, wherein the etalon is operatively connected with the second light source.
5 more elements
A light source arrangement comprising:
- a first light source;
- a second light source;
- a dichroic mirror disposed with the first light source and second light source and configured to:
- reflect a predetermined portion of the light emitted from the first light source and to transmit the remaining portion;
- reflect light emitted from the second light source so that it propagates in the same direction as the remaining portion of the light from the first light source which is transmitted through the dichroic mirror;
- a condenser lens arranged to receive and focus light from the dichroic mirror;
- and
- an etalon disposed between the dichroic mirror and the condenser lens.
5 more elements
An image projection system comprising:
- a first light source;
- a second light source;
- a dichroic mirror disposed with the first light source and second light source and configured to:
- reflect a predetermined portion of the light emitted from the first light source and to transmit the remaining portion;
- and
- reflect light emitted from the second light source and direct the light from the second light source so that it propagates in the same direction as the portion of light which is transmitted through the dichroic mirror;
- and
- an etalon disposed between the first source of light and the dichroic mirror, wherein the etalon is operatively connected with the second light source.
5 more elements
An image projection system comprising:
- a first light source;
- a second light source;
- a dichroic mirror disposed with the first light source and second light source and configured to:
- reflect a predetermined portion of the light emitted from the first light source and to transmit the remaining portion;
- and
- reflect light emitted from the second light source and direct the light from the second light source so that it propagates in the same direction as the portion of light which is transmitted through the dichroic mirror;
- and
- an etalon disposed between the dichroic mirror and the condenser lens.
5 more elements
A method of producing light comprising:
- generating light which has a low intensity in a predetermined spectrum using a first light source;
- directing the light from the first light source against a dichroic mirror;
- orienting the dichroic mirror so that the predetermined spectrum in the light from the first source is reflected and the remaining portion of the light from the first source is transmitted through the dichroic mirror;
- generating light which has a high intensity in the predetermined spectrum using a second light source;
- directing the light from the second light source against the dichroic mirror;
- reflecting the light from the second light source using the dichroic mirror so that the light from the second light source and the remaining portion of the light from the first light source propagate in the same direction;
- disposing an etalon in the path of the light from the second light source after it has been reflected off the dichroic mirror;
- and
- timing the operation of the etalon to pass red, green and blue light in a predetermined sequence.
6 more elements
A light source arrangement comprising:
- first light source means for generating light which has a low intensity in a predetermined light spectrum;
- first directing means for directing light from the first light source against dichroic mirror means which is oriented so that the predetermined light spectrum in the light from the first source is reflected and the remaining portion of the light from the first source is transmitted through the dichroic mirror;
- a second light source means for generating light which has a high intensity in the predetermined light spectrum;
- second directing means for directing the light from the second light source against the dichroic mirror and for reflecting the light from the second light source using the dichroic mirror so that the light from the second light source and the remaining portion of the light from the first light source propagate in the same direction;
- and
- a gamut generator means for selectively transmitting red, green and blue light from at least one of the first light source and the second light source, wherein the gamut generator comprises an etalon, and wherein the operation of the etalon is timed in a predetermined relationship with pulsing applied to at least one of the first light source and the second light source.
3 more elements
Dependencies are inferred from the claim text.