Patents Assigned to RealD Inc.
  • Patent number: 11575880
    Abstract: A stereoscopic image display apparatus that is capable of being efficiently aligned using a remotely controlled alignment function and a method of displaying a stereoscopic image using the same are disclosed.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: February 7, 2023
    Assignee: RealD Inc.
    Inventors: Bong Jae So, Yong Kyu Kim, Young Suk Kim
  • Patent number: 11543670
    Abstract: A polarizing beam splitter assembly for directing image light on an input path into multiple exit light paths comprises multiple prisms with edges that meet to form a seam. The polarizing beam splitter assembly includes a diffracting element prior to the seam in the input light path. The diffracting element comprises a geometry that performs at least one of blocking a portion of the image light and scattering a portion of the image light.
    Type: Grant
    Filed: July 19, 2021
    Date of Patent: January 3, 2023
    Assignee: RealD Inc.
    Inventors: Jay Ahling, Matthew Zimmer
  • Patent number: 11520163
    Abstract: A stereoscopic image apparatus that is capable of minimizing loss of optical energy and improving quality of a stereoscopic image is disclosed. The stereoscopic image apparatus includes a polarizing beam splitter to reflect or transmit incident light based on polarization components of the light to split the light in at least three different directions, a reflective member to reflect the light reflected by the polarizing beam splitter to a screen, at least one modulator to modulate the light reflected by the reflective member and the light transmitted through the polarizing beam splitter, and a refractive member disposed in an advancing direction of light to be incident upon the polarizing beam splitter to refract the light to be incident upon the polarizing beam splitter.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: December 6, 2022
    Assignee: RealD Inc.
    Inventors: Chui Woo Lee, Sung Ho Cho, Byung Gul Lim
  • Patent number: 11223819
    Abstract: A stereoscopic image display apparatus that is capable of being efficiently aligned using a remotely controlled alignment function and a method of displaying a stereoscopic image using the same are disclosed.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: January 11, 2022
    Assignee: RealD Inc.
    Inventors: Bong Jae So, Yong Kyu Kim, Young Suk Kim
  • Patent number: 11143948
    Abstract: A polarization conversion system (PCS) is located in the output light path of a projector. The PCS may include a polarizing beam splitter, a polarization rotating element, a reflecting element, and a polarization switch. Typically, a projector outputs randomly-polarized light. This light is input to the PCS, in which the PCS separates p-polarized light and s-polarized light at the polarizing beam splitter. P-polarized light is directed toward the polarization switch on a first path. The s-polarized light is passed on a second path through the polarization rotating element (e.g., a half-wave plate), thereby transforming it to p-polarized light. A reflecting element directs the transformed polarized light (now p-polarized) along the second path toward the polarization switch. The first and second light paths are ultimately directed toward a projection screen to collectively form a brighter screen image in cinematic applications utilizing polarized light for three-dimensional viewing.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: October 12, 2021
    Assignee: RealD Inc.
    Inventors: Miller H. Schuck, Michael G. Robinson, Gary D. Sharp
  • Patent number: 11092816
    Abstract: A polarizing beam splitter assembly for directing image light on an input path into multiple exit light paths comprises multiple prisms with edges that meet to form a seam. The polarizing beam splitter assembly includes a diffracting element prior to the seam in the input light path. The diffracting element comprises a geometry that performs at least one of blocking a portion of the image light and scattering a portion of the image light.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: August 17, 2021
    Assignee: RealD Inc.
    Inventors: Jay Ahling, Matthew Zimmer
  • Patent number: 10914965
    Abstract: A stereoscopic image apparatus that is capable of minimizing loss of optical energy and improving quality of a stereoscopic image is disclosed. The stereoscopic image apparatus includes a polarizing beam splitter to reflect or transmit incident light based on polarization components of the light to split the light in at least three different directions, a reflective member to reflect the light reflected by the polarizing beam splitter to a screen, at least one modulator to modulate the light reflected by the reflective member and the light transmitted through the polarizing beam splitter, and a refractive member disposed in an advancing direction of light to be incident upon the polarizing beam splitter to refract the light to be incident upon the polarizing beam splitter.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: February 9, 2021
    Assignee: RealD Inc.
    Inventors: Chui Woo Lee, Sung Ho Cho, Byung Gul Lim
  • Patent number: 10739611
    Abstract: A polarization conversion system separates light from an unpolarized image source into a first state of polarization (SOP) and an orthogonal second SOP, and directs the polarized light on first and second light paths. The SOP of light on only one of the light paths is transformed to an orthogonal state such that both light paths have the same SOP. A polarization modulator temporally modulates the light on the first and second light paths to first and second output states of polarization. First and second projection lenses direct light on the first and second light paths toward a projection screen to form substantially overlapping polarization encoded images. The polarization modulator may be located before or after the projection lenses. The polarization-encoded images may be viewed using eyewear with appropriate polarization filters.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: August 11, 2020
    Assignee: RealD Inc.
    Inventors: Miller H. Schuck, Michael G. Robinson, Gary D. Sharp
  • Patent number: 10701348
    Abstract: Proposed is a stereoscopic image screening device.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: June 30, 2020
    Assignee: REALD INC.
    Inventors: Young Hoon Lee, Chul Woo Lee, Bong Jae So
  • Patent number: 10614767
    Abstract: A direct view display provides a light modulating panel and a backlight including first and second sets of spectral emitters. Several modes of operation may be provided including an advanced 2D mode, and an enhanced color gamut mode employing simultaneous illumination of the first and second set of spectral emitters. Another embodiment may be an optical structure for a multi-functional LCD display with wide color gamut and high stereo contrast. The optical structure may also be used to produce more saturated colors for a wider display color gamut and also may be used to produce a brighter backlight structure through light recycling of the wider bandwidth light back into the optical structure.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: April 7, 2020
    Assignee: RealD Inc.
    Inventors: Miller H. Schuck, Gary D. Sharp, Douglas J. McKnight, Terry Norton
  • Patent number: 10466543
    Abstract: A 3D image pixel in a spatially multiplexed stereo 3D display includes a first left-eye subpixel and a second left-eye subpixel that are both driven when displaying the left-eye image. The 3D image pixel also includes a first right-eye subpixel and a second right-eye subpixel that are both driven when displaying the right-eye image. The subpixels may all have a square shape. Single color emitters in the subpixels of the same eye may be driven by the same electronics. A 3D image pixel in a second spatially multiplexed stereo 3D display includes a left-eye pixel driven when displaying the left-eye image and a right-eye pixel driven when displaying the right-eye image. The pixels may all have a rectangular shape, and the horizontal measurement of the pixels may be greater than the vertical measurement of the pixels.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: November 5, 2019
    Assignee: RealD, Inc.
    Inventors: David A. Coleman, Peter Ludé
  • Patent number: 10459321
    Abstract: Optical systems having at least one polarization beam splitter (PBS) are operable to receive randomly-polarized light bundles from a projector lens. The PBS is further operable to direct light bundles having a state of polarization (SOP) along a light path and operable to direct other light bundles having a different SOP along different light paths. The light paths have optical path lengths which may differ. Each light path produces an image having a distortion which may differ from the distortion of an image produced by a different light path. A compensation in a light path is operable to convert a non-compensated distortion of an image into a compensated distortion that more closely matches the distortion of images in other light paths.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: October 29, 2019
    Assignee: RealD Inc.
    Inventors: Miller H. Schuck, Douglas J. McKnight
  • Patent number: 10395345
    Abstract: First and second spatial frame regions are identified in a sequence of motion picture image frames captured at a high frame rate. Different motion blur parameters are determined for each of the first and second spatial frame regions. First and second intermediate frame sequences having frame rates less than the capture frame rate are generated from the original frame sequence. The first motion blur parameter is applied to the first intermediate frame sequence and the second motion blur parameter is applied to the second intermediate frame sequence. The first and second spatial frame regions in the corresponding first and second intermediate frame sequences are composited to produce an output frame sequence having different motion blur in different regions of the scene.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: August 27, 2019
    Assignee: RealD Inc.
    Inventor: Anthony Davis
  • Patent number: 10291906
    Abstract: The present invention relates to a stereoscopic image device and a method for providing a stereoscopic image and, more specifically, to a stereoscopic image device and a method capable of providing a stereoscopic image, which can provide high-quality stereoscopic image by using two projectors and devices related thereto.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: May 14, 2019
    Assignee: RealD Inc.
    Inventors: Byung Gul Lim, Sung Ho Cho, Chul Woo Lee
  • Patent number: 10254637
    Abstract: A method of mounting screen material may include a screen mounted to a frame at multiple mounting points. One embodiment may include mounting patches attached along the perimeter of the screen. These mounting patches may be strain relieved in order to enable rolling the screen without sacrificing the in-plane rigidity of the patches when the screen is mounted to a frame. Stated differently, the strain relieved patches may reduce the strain on the screen in the circumstance the screen is rolled onto a core. The mounting patches may be strain relieved by locating notches or slits in the mounting patch.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: April 9, 2019
    Assignee: RealD Inc.
    Inventors: Harrison Fast, David A. Coleman, Mark DiLullo
  • Patent number: 10203511
    Abstract: A polarization conversion system separates light from an unpolarized image source into a first state of polarization (SOP) and an orthogonal second SOP, and directs the polarized light on first and second light paths. The SOP of light on only one of the light paths is transformed to an orthogonal state such that both light paths have the same SOP. A polarization modulator temporally modulates the light on the first and second light paths to first and second output states of polarization. First and second projection lenses direct light on the first and second light paths toward a projection screen to from substantially overlapping polarization encoded images. The polarization modulator may be located before or after the projection lenses. The polarization-encoded images may be viewed using eyewear with appropriate polarization filters.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: February 12, 2019
    Assignee: RealD Inc.
    Inventors: Miller H. Schuck, Michael G. Robinson, Gary D. Sharp
  • Patent number: 10129538
    Abstract: A controller that may implement variation of the content of binocular images which may depend upon which region of a binocular image a viewer is fixating. An aspect of the present disclosure may include locally controlling the viewer's perceived depth impression which may depend on where in perceived depth in an image the viewer is fixating. This may enable the perceived depth to be optimized across the image for quality and performance reasons.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: November 13, 2018
    Assignee: RealD Inc.
    Inventors: Nicolas S. Holliman, Michael G Robinson
  • Patent number: 10097800
    Abstract: A dynamic iris is located on the imaging path of an optical lens system that includes a relay lens system and at least one projection lens system. A dynamic iris modulates image frames in an image data stream, resulting in a reduction in light transmission associated with the modulated image frames. A dynamic iris may be configured to change the size of its aperture as fast as or faster than the image frame period of the image data stream, and may be located at or near the pupil of a relay lens system, a projection lens system, or both. A second dynamic iris in the imaging path further modulates the image frames, resulting in a further reduction in light transmission. A dynamic iris may modulate an image frame based on an electronic preview of the image frame or based on metadata associated with the image frame.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: October 9, 2018
    Assignee: RealD Inc.
    Inventor: Miller H. Schuck
  • Patent number: 10082675
    Abstract: Liquid crystal devices are described that maintain performance of polarization/amplitude modulation under high irradiance conditions. Configurations that isolate polarizing elements under high thermal load are discussed which allow other elements, such as glass, which may be sensitive to stress birefringence to remain near optimum thermal conditions.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: September 25, 2018
    Assignee: RealD Inc.
    Inventors: Gary D. Sharp, Scott Gilman, David A. Coleman
  • Patent number: 10049627
    Abstract: A direct view display provides a light modulating panel and a backlight including first and second sets of spectral emitters. Several modes of operation may be provided including an advanced 2D mode, and an enhanced color gamut mode employing simultaneous illumination of the first and second set of spectral emitters. Another embodiment may be an optical structure for a multi-functional LCD display with wide color gamut and high stereo contrast. The optical structure may also be used to produce more saturated colors for a wider display color gamut and also may be used to produce a brighter backlight structure through light recycling of the wider bandwidth light back into the optical structure.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: August 14, 2018
    Assignee: RealD Inc.
    Inventors: Miller H. Schuck, Gary D. Sharp, Douglas J. McKnight, Terry Norton