Patents Represented by Attorney Jeffrey H. Laff Whitesel & Saret, Ltd. Canfield
  • Patent number: 6111622
    Abstract: A backlit liquid crystal display device having improved nighttime operational characteristics includes a fluorescent lamp for daytime operation and a separate light source for nighttime operation which emits a low-intensity light. Preferably, the nighttime light source is an electroluminescent panel which also acts as a daytime reflector of light. An integral image-splitting and collimating lens is provided to increase the uniformity of the light emitted and to provide wide angle viewability. A sharp cut-off IR filter may also be included in the device to provide NVIS-B night vision goggle compatibility.
    Type: Grant
    Filed: January 5, 1994
    Date of Patent: August 29, 2000
    Assignee: OIS Optical Imaging Systems, Inc.
    Inventor: Adiel Abileah