Patents Assigned to Pei-Chang Cheng
  • Patent number: 5304168
    Abstract: A real image/red ray pulse and beep type amblyopia curing device is designed to take into account the "Substitutive Suppressed Competition" theory and includes a main frame, a red ray projector, a real image projector, and an electronic circuit composed of a power supply circuit, a speaker circuit, a real image/red ray projector circuit, an oscillation circuit, a red lamp connected to the oscillation circuit, a real image lamp connected to the power supply, and a real image/red ray selector switch, in which the real image lamp is installed at the bottom of the real image projector, one or more lenses are installed at the front side of the real image projector to provide parallel rays for providing a steady real image, a non-transparent dot of preferably 3 to 8 mm in diameter is made at the center of the front surface of the lens or lenses, and the red ray lamp is installed within the red ray projector.
    Type: Grant
    Filed: January 4, 1993
    Date of Patent: April 19, 1994
    Assignee: Pei-Chang Cheng
    Inventor: Han-Jun Sun