Light-source device and projection type display device
First Claim
Patent Images
1. A light-source device comprising:
- a first lens unit for condensing light emitted by a lamp;
a rod integrator having an injection end and an emitting end, the injection end being disposed in the vicinity of a convergence point of the light condensesd by the first lens, the rod integrator forming a plurality of imaginary light-source points each of which virtually emits the luminous flux to the emitting end a second lens unit for forming the images of the imaginary light source points and a diaphragm being disposed in the vicinity of a plane on which the images of the imaginary light-source points are formed, the diaphragm having an aperture which is shaped so that the diaphragm selectively blocks an image of an imaginary light-source point emitting undesirable light components.
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Abstract
A light-source device comprising: a rod integrator having an injection end and an emitting end; a lens unit for collecting a luminous flux emitted from the emitting end; and, a diaphragm. The rod integrator forms a plurality of imaginary light-source points, each of which virtually emits the luminous flux toward the emitting end. The diaphragm is disposed in the vicinity of a plane on which the lens unit forms the images of the imaginary light-source points, and selectively blocks luminous flux emitted from each of the images of the imaginary light-source points.
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Citations
9 Claims
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1. A light-source device comprising:
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a first lens unit for condensing light emitted by a lamp;
a rod integrator having an injection end and an emitting end, the injection end being disposed in the vicinity of a convergence point of the light condensesd by the first lens, the rod integrator forming a plurality of imaginary light-source points each of which virtually emits the luminous flux to the emitting end a second lens unit for forming the images of the imaginary light source points and a diaphragm being disposed in the vicinity of a plane on which the images of the imaginary light-source points are formed, the diaphragm having an aperture which is shaped so that the diaphragm selectively blocks an image of an imaginary light-source point emitting undesirable light components. - View Dependent Claims (2, 3, 4, 5)
a light valve means being disposed in the vicinity of a plane on which the second lens unit form an image of the emitting end, and a projection means for projecting an image formed by the light valve means onto a screen. -
4. A projection type display device of claim 3, wherein the projection means comprises a condenser lens and a projection lens, the condenser lens which re-forms images of the imaginary light-source points in the vicinity of an entrance pupil of the projection lens.
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5. A projection type display device of claim 3, wherein the cross-sectional shape of the emitting end of the rod integrator is analogous to that of the light valve means.
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6. A projection type display device comprising:
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a first lens unit for condensing light emitted by a lamp;
a rod integrator having an injection end being disposed in the vicinity of a convergence point of the light condensed by the first condenser lens and an emitting end, the rod integrator forming a plurality of imaginary light-source points each of which virtually emits the luminous to the emitting end;
a second lens unit for forming images of the imaginary light-source points;
a diaphragm being disposed in the vicinity of a plane on which the images of the imaginary light-source points are formed, the diaphragm selectively blocks luminous flux emitted from each of the images of the imaginary light-source points;
a light valve means being disposed in the vicinity of a plane on which the second lens unit form an image of the emitting end, the light valve means having a plurality of mirrors forming mirror array each of which reflects light in a first direction or in a second direction, the light valve means which forms images with the light reflected in the first direction; and
,a projection means for projecting the images formed by the light valve means onto a screen. - View Dependent Claims (7)
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8. A projection type display device comprising:
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a first lens unit for condensing light emitted by a lamp;
a rod integrator having an injection end being disposed in the vicinity of a convergence point of the light condensed by the first condenser lens and an emitting end, the rod integrator forming a plurality of imaginary light-source points each of which virtually emits the luminous to the emitting end;
a second lens unit for forming images of the imaginary light-source points;
a diaphragm being disposed in the vicinity of a plane on which the images of the imaginary light-source points are formed, the diaphragm selectively blocks luminous flux emitted from each of the images of the imaginary light-source points;
a light valve means being disposed in the vicinity of a plane on which the second lens unit form an image of the emitting end, the light valve means having a plurality of mirrors forming mirror array each of which reflects light in a first direction or in a second direction, the light valve means which forms images with the light reflected in the first direction; and
,a projection means for projecting the images formed by the light valve means onto a screen, wherein the diaphragm blocks scattered light or diffracted light to enter into the projection means, which is contained in light reflected in the second direction by the light valve means.
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9. A light-source device comprising:
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a first lens unit for condensing light emitted by a lamp;
a rod integrator having an injection end and an emitting end, the injection end being disposed with no other intervening optical elements in relation to a convergence point of the light condensed by the first lens unit, the rod integrator forming a plurality of imaginary light-source points each of which virtually emits the luminous flux to the emitting end a second lens unit for forming the images of the imaginary light source points and a diaphragm being disposed with no other intervening optical elements in relation to a plane on which the images of the imaginary light-source points are formed, the diaphragm selectively blocks luminous flux emitted from each of the images of the imaginary light-source points.
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Specification