Method, System and Apparatus for Diffuser Vibration
First Claim
Patent Images
1. An image display device, comprising:
- a laser light source to provide a laser light to an imaging device, wherein the laser light is configured to project at least a portion of an image from the display device onto a surface;
optics in an optical path of the laser light, the optics to optically adjust the laser light;
a diffuser in the optical path of the laser light between the laser light source and the imaging device; and
a coil connected to the diffuser, wherein the diffuser is vibrated by a change in electrical current through the coil, and the diffuser is configured to diffuse the laser light and reduce speckle in the image.
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Abstract
Methods, systems and apparatus for diffuser vibration to reduce speckle in a laser display device are provided. In some embodiments, a coil is operatively coupled to the diffuser to generate the desired vibrations in the diffuser. In some embodiments, an air jet may be operatively coupled to the diffuser such that vibrations from the air jet are transferred to the diffuser. In other embodiments, parasitic vibrations from other components in the laser display device may be used to vibrate the diffuser without requiring an additional motor dedicated to only vibrating the diffuser.
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Citations
16 Claims
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1. An image display device, comprising:
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a laser light source to provide a laser light to an imaging device, wherein the laser light is configured to project at least a portion of an image from the display device onto a surface;
optics in an optical path of the laser light, the optics to optically adjust the laser light;
a diffuser in the optical path of the laser light between the laser light source and the imaging device; and
a coil connected to the diffuser, wherein the diffuser is vibrated by a change in electrical current through the coil, and the diffuser is configured to diffuse the laser light and reduce speckle in the image. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An image display device, comprising:
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a laser light source to provide a laser light to an imaging device, wherein the laser light is configured to project at least a portion of an image from the display device onto a surface;
optics in an optical path of the laser light, the optics to optically adjust the laser light;
a diffuser in the optical path of the laser light between the laser light source and the imaging device; and
a parasitic vibration arm connected to the diffuser, wherein the parasitic vibration arm is vibrated by an air jet, the diffuser is vibrated by the parasitic vibration arm, and the diffuser is configured to diffuse the laser light and reduce speckle in the image. - View Dependent Claims (8)
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9. A method for reducing speckle in a laser display device, the method comprising:
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providing a laser light to an imaging device to then project at least part of an image from a display device;
adjusting the laser light with optics in the path of the laser light within the display device;
vibrating a diffuser within the path of the laser between a laser light source and the imaging device light to reduce speckle in the image projected from the display device, wherein vibrating the diffuser further comprises electrically moving a coil attached to the diffuser. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method for reducing speckle in a laser display device, the method comprising:
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providing a laser light to an imaging device to project at least part of an image from a display device;
adjusting the laser light with optics in the path of the laser light within the display device;
vibrating a diffuser within the path of the laser light between a laser light source and the imaging device to reduce speckle in the image projected from the display device, wherein vibrating the diffuser further comprises imparting an air jet on structure attached to the diffuser. - View Dependent Claims (16)
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Specification