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Projector with Image Plane Mode Vibration for Speckle Suppression

A projector and image plane technology, applied in the field of projectors, can solve problems such as speckle suppression

Active Publication Date: 2020-06-26
CHRISTIE DIGITAL SYST USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this vibration cannot always suppress the speckle to a level where it is not visible to the viewer

Method used

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  • Projector with Image Plane Mode Vibration for Speckle Suppression
  • Projector with Image Plane Mode Vibration for Speckle Suppression
  • Projector with Image Plane Mode Vibration for Speckle Suppression

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Embodiment Construction

[0027] attention turn figure 1 , which depicts a schematic diagram of projector 100 with image plane mode vibration for speckle suppression. Projector 100 includes: a laser light source 101; a light modulator 103; optics (schematically represented by integrating rod 104, lenses 105-1, 105-2, 105-3 and prism 107) configured to direct light 109 is transmitted from the laser light source 101 to the light modulator 103 and modulated light 111 is projected from the light modulator 103, the optics includes an image plane 113 at which the light 109 from the laser light source 101 is formed by the optics Image; panel 115 comprising at least a first region located at image plane 113 (as hereinafter with respect to figure 2 described), the first region is at least as large as the image formed at the image plane 113, the first region is configured to one or more of transmit and reflect the image formed at the image plane 113; and at least three actuators 117-1, 117-2, 117-3, the posit...

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PUM

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Abstract

A projector with image plane mode vibration for speckle suppression is provided. The projector includes: a laser light source; a light modulator; optics that transmit light from the laser to the modulator and project modulated light from the modulator, the optics including an image plane. The projector further includes a panel comprising at least a first region at the image plane, the first region being at least as large as an image formed at the image plane, the first region being configured to transmit and reflect the image one or more of; and at least three actuators, the position of interaction of the actuators with the panel is asymmetrical with respect to the panel, the actuators are configured to generate corresponding motions at corresponding frequencies in the first region For surface waves, the respective frequencies include frequencies that are non-integer multiples of each other.

Description

technical field [0001] This specification relates generally to projectors, and in particular, to projectors with image plane modal vibration for speckle reduction (speckle reduction). Background technique [0002] Projectors and / or laser projection systems that use laser light sources often suffer from speckle. One solution to reducing speckle in such projectors is to vibrate the projection screen. However, the vibration of the often very large and often curved projection screens requires complex systems and customization of the cinema, which is expensive. Another approach for mitigating speckle in such projectors is to vibrate optical elements (lenses, integrating cylinders, diffusers, mirrors, etc.) within the projector along the illumination path in a rigid body motion mode. However, this vibration cannot always suppress the speckle to a level where it is not visible to the viewer. Contents of the invention [0003] In general, the present disclosure relates to a las...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/14G03B21/20
CPCG03B21/147G03B21/2033G02B27/48G03B21/208G03B21/005G03B21/142
Inventor 丹尼尔·罗伯特·阿德马达伦·帕斯特里克格雷厄姆·希尔
Owner CHRISTIE DIGITAL SYST USA INC