Varying light beam for a display system
First Claim
Patent Images
1. A method of producing a beam of light for a display system comprising:
- generating a light beam having a tranverse cross section taken in a plane generally perpendicular to a light path of the light beam, the transverse cross section being elongate along a longitudinal axis; and
moving a plurality of beam-modifying optical elements sequentially along a travel path that intersects the light path with the longitudinal axis of the transverse cross section of the light beam oriented transverse to the travel path.
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Abstract
A method of producing a light beam for a display system includes generating a light beam having a transverse cross section that is elongate along a longitudinal axis, and moving a plurality of beam-modifying optical elements sequentially along a travel path that intersects the light beam with the light beam cross-section longitudinal axis oriented transverse to the travel path.
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Citations
51 Claims
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1. A method of producing a beam of light for a display system comprising:
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generating a light beam having a tranverse cross section taken in a plane generally perpendicular to a light path of the light beam, the transverse cross section being elongate along a longitudinal axis; and
moving a plurality of beam-modifying optical elements sequentially along a travel path that intersects the light path with the longitudinal axis of the transverse cross section of the light beam oriented transverse to the travel path. - View Dependent Claims (2, 3, 4)
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5. A method of producing a beam of light for a display system comprising:
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generating a light beam having a generally circular transverse cross section and modifying the light beam having a generally circular transverse cross section to have a transverse cross section that is elongate along a longitudinal axis; and
moving a plurality of beam-modifying optical elements sequentially along a travel path that intersects the light path with the longitudinal axle of the transverse cross section of the light beam oriented transverse to the travel path. - View Dependent Claims (6, 7, 8, 9)
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10. A method of producing a beam of light for a display system comprising:
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generating a light beam having a transverse cross section that is elongate along a longitudinal axis;
moving a plurality of beam-modifying optical elements sequently along a travel path that intersects the light path with the longitudinal axis of the transverse cross section of the light beam oriented transverse to the travel path; and
modifying the light beam in the light path, downstream from the intersection of the light path and travel path, in a manner decreasing the elongation of the transverse cross section of the light beam. - View Dependent Claims (11, 12, 13)
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14. A light path comprising:
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a light source device configured to produce a light beam having a transverse cross section taken in a plane generally perpendicular to a light path of the light beam, the transverse cross section being elongate along a longitudinal axis; and
a plurality of beam-modifying optical elements configured to move sequentially along a travel path that intersects the light beam with the longitudinal axis of the transverse cross section of the light beam, transverse to the travel path. - View Dependent Claims (15, 16)
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17. A light path comprising:
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a light source device including a light source configured to produce a light beam having a generally circular transverse cross section, and a first anamorphic optical device configured to modify the light beam having a generally circular transverse cross section to have a transverse cross section that is elongate along the longitudinal axis; and
a plurality of beam-moving optical elements configured to move sequentially along a travel path that intersects the light beam with the longitudinal axis of the transverse cross section of the light beam, transverse to the travel path. - View Dependent Claims (18, 19, 20, 21)
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22. A light path comprising:
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a light source device configured to produce a light beam having a transverse cross section that is elongate along a longitudinal axis;
a plurality of beam-modifying optical elements configured to move sequentially along a travel path that intersects the light beam with the longitudinal axis of the transverse cross section of the light beam, transverse to the travel path; and
an anamorphic optical device configured to modify the light beam downstream from the intersection of the light path and the travel path, to have a transverse cross section that has decreased elongation. - View Dependent Claims (23)
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24. A generator of a varying light beam for a display system comprising:
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a light source device configured to produce a light beam directed along a light path, the light beam having a transverse cross section taken in a plane generally perpendicular to a light path of the light beam, the transverse cross section being elongate along a longitudinal axis; and
a plurality of beam-modifying optical elements configured to move sequentially along a travel path that intersects the light path with the longitudinal axis of the transverse cross section of the light beam, transverse to the travel path. - View Dependent Claims (25, 34)
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26. A generator of a varying light beam for a display system comprising:
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a light source device including a light source configured to produce a light beam having a generally circular transverse cross section, and a first anamorphic optical device configured to modify the light beam having a generally circular transverse cross section to have a transverse cross section that is elongate along the longitudinal;
axisa plurality of beam-modifying optical elements configured to move sequentially along a travel path that intersects the light path with the longitudinal axis of the transverse cross section of the light beam, transverse to the travel path. - View Dependent Claims (27, 28, 29, 30)
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31. A generator of a varying light beam for a display system comprising:
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a light source device configured to produce a light beam directed along a light path, the light beam having a transverse cross section that is elongate along a longitudinal axis;
a plurality of beam-modifying optical elements configured to move sequentially along a travel path that intersects the light path with the longitudinal axis of the transverse cross section of the light beam, transverse to the travel path; and
an anamorphic optical device configured to modify the light beam in the light path downstream from the intersection of the light path and the travel path, to have a transverse cross section that has decreased elongation. - View Dependent Claims (32)
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33. A display system comprising:
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a light source device configured to produce a light beam directed along a light path having a transverse cross section taken in a plane generally perpendicular to a light path of the light beam, the transverse cross section being elongate along a longitudinal axis;
a plurality of beam-modifying optical elements configured to move sequentially along a travel path that intersects the light path with the longitudinal axis of the transverse cross section of the light beam transverse to the travel path;
a spatial light modulator for modulating the light of sequentially different colors according to received image information; and
projection optics for directing the modulated light beam along the light path.
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35. A display system comprising:
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a light source device including a light source configured to produce a light beam having a generally circular transverse cross section, and a first anamorphic optical device configured to modify the light beam having a generally circular transverse cross section to have a transverse cross section that is elongate along the longitudinal axis;
a plurality of beam-modifying optical elements configured to move sequentially along a travel path that intersects the light path with the longitudinal axis of the transverse cross section of the light beam transverse to the travel path;
a spartial light modulator for modulating the light of sequentially different colors according to received image information; and
projection optics for directing the modulated light beam along the light path. - View Dependent Claims (36, 37, 38, 39)
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40. A display system comprising:
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a light source device configured to produce a light beam directed along a light path having a transverse cross section that is elongate along a longitudinal axis;
a plurality of beam-modifying optical elements configured to move sequentially along a travel path that intersects the light path with the longitudinal axis of the transverse cross section of the light beam transverse to the travel path;
a spatial light modulator for modulating the light of sequentially different colors according to received image information;
projection optics for directing the modulated light beam along the light path; and
an anamorphic optical device configured to modify the light beam in the light path downstream from the intersection of the light path and the travel path, to have a transverse cross section that has decreased elongation. - View Dependent Claims (41)
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42. A display system comprising:
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a light source configured to produce a light beam having a generally circular transverse cross section;
a first anamorphic optical device configured to modify the light beam having a generally circular transverse cross section to have a transverse cross section that is elongate along a longitudinal axis;
a filter assembly having a plurality of differently colored filters, a support for supporting the plurality of differently colored filters adjacent to each other, the filter assembly being configured to move the plurality of differently colored filters sequentially along a travel path that intersects the light path with the longitudinal axis of the transverse cross section of the light beam transverse to the travel path, sequentially adjacent filters having adjacent edges that are generally aligned with the longitudinal axis of the transverse cross section of the light beam, when the adjacent edges are impinged by the light beam, the filter assembly producing a light beam of sequentially different colors;
a light integrating rod having an aperture of a first configuration;
a second anamorphic optical device configured to modify the light beam in the light path between the filter assembly and the light integrating rod, to have a transverse cross section that more closely corresponds to the first configuration than does the light beam with a transverse cross section that is elongate along a longitudinal axis;
a spatial light modulator for modulating the light of sequentially different colors according to received image information; and
projection optics for directing the modulated light beam along the light path. - View Dependent Claims (43, 44)
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45. Means for producing a time-varying light beam for a display system comprising:
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means for generating a light beam having a transverse cross section that is elongate along a longitudinal axis;
a plurality of means for modifying the light beam; and
means for moving the plurality of means for modifying the light beam sequentially along a travel path that intersects the light path with the longitudinal axis of the transverse cross section of the light beam oriented transverse to the travel path. - View Dependent Claims (46, 47, 48, 49)
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50. A method of producing a beam of light for a display system comprising:
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generating a light beam having a given transverse cross section taken at a first angle relative to a light path of the light beam;
modifying the light beam to have a modified transverse cross section taken at the first angle relative to the light path of the light beam, the modified transverse cross section having a reduced width transverse to a longitudinal axis relative to a length along the longitudinal axes; and
moving a plurality of beam-modifying optical elements sequentially along a travel path that intersects the modified light beam with the longitudinal axis of the modified transverse cross section oriented transverse to the travel path.
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51. A generator of a varying light beam for a display system comprising:
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a light source configured to produce a light beam having a given transverse cross section;
a first anamorphic optical device configured to modify the light beam having a generally circular transverse cross section to have a transverse cross section that has a reduced width transverse to a longitudinal axis relative to a length along the longitudinal aids; and
a plurality of beam-modifying optical elements configured to move sequentially along a travel path that intersects the modified light beam with the longitudinal axis of the transverse cross section of the modified light beam, transverse to the travel path.
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Specification