Patents Assigned to Optical Associates, Incorporated
  • Exposure system
    Patent number: 4117375
    Abstract: An exposure system is described employing a lamp and means for controlling the exposure time period during which light from the lamp at a preselected level is passed through a light path to an exposure plane. Light is detected in the light path and the brightness of the lamp is adjusted according to the sensed light to provide the preselected level of light output from the lamp during the exposure period. Also described is a method for operating such a system.
    Type: Grant
    Filed: December 15, 1976
    Date of Patent: September 26, 1978
    Assignee: Optical Associates, Incorporated
    Inventors: Gerald Bachur, George E. Richardson
  • Radiation-sensitive control circuit for driving lamp at various power levels
    Patent number: 4024428
    Abstract: An exposure system is described employing a lamp and means for controlling the exposure time period during which light from the lamp at a preselected level is passed through a light path to an exposure plane. Light is detected in the light path and the brightness of the lamp is adjusted according to the sensed light to provide the preselected level of light output from the lamp during the exposure period. Also described is a method for operating such a system.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: May 17, 1977
    Assignee: Optical Associates, Incorporated
    Inventors: Gerald Bachur, George E. Richardson