Using A Half Transparent Mirror Or Prism (epo) Patents (Class 348/E13.042)
  • Patent number: 10146497
    Abstract: A two-layer image display device includes a back side LCD, a transparent screen, and a lower side LCD. The back side LCD displays an image on a display screen. The transparent screen is disposed on a front side of the display screen of an image display device. The lower side LCD projects an image from a lower position of the transparent screen. The transparent screen reflects, with directivity, light incident at a predetermined angle and includes an anisotropic optical film which transmits light incident at an angle other than the predetermined incident angle. The lower side LCD is disposed at a position where the image incident at the predetermined angle is projected and reflected on the transparent screen. The back side LCD is disposed at a position where incident light from an image displayed on the display screen transmits through the transparent screen.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: December 4, 2018
    Assignee: Alpine Electronics, Inc.
    Inventor: Shunichi Imanishi
  • Patent number: 8345088
    Abstract: In an autostereoscopic display apparatus comprising a liquid crystal spatial light modulator having an array of pixels of different colors, each pixel comprising plural domains of different polar alignments, and a parallax element comprising an array of optical elements having geometric axes extending in parallel across the spatial light modulator in an inclined direction, the domains are shaped to improve the angular contrast uniformity. For each individual domain, a notional line parallel to the geometric axes of the optical elements of the parallax element has a total length of intersection with the individual domain, summed over adjacent pixels of the same color, is the same for all positions of the notional line. The total length of intersection for different domains is proportional to the area of the individual domains.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: January 1, 2013
    Assignee: AU Optronics Corporation
    Inventors: Jonathan Harrold, Graham John Woodgate