Patents Assigned to Light Control Systems, Inc.
  • Continuously variable fiber optic attenuator
    Patent number: 4989938
    Abstract: A continuously variable fiber optic attenuator which can be constructed in a size amenable to direct mounting on optical data application apparatus is presented. The attenuator utilizes a flexible filter of varying optical density which is oriented in an optical coupling region between two optical fibers. The filter can be displaced in a manner to vary the filter density in the optical coupling region and thereby vary the attenuation across the device. A resistor coupled to the attenuator provides means for calibration of the attenuator to provide a highly accurate and reproducible attenuation.
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: February 5, 1991
    Assignee: Light Control Systems, Inc.
    Inventor: Thomas W. Tamulevich
  • Continuously variable fiber optic attenuator
    Patent number: 4904044
    Abstract: A continuously variable fiber optic attenuator which can be constructed in a size amenable to direct mounting on optical data application apparatus is presented. The attenuator utilizes a flexible filter of varying optical density which is oriented in an optical coupling region between two optical fibers. The filter can be displaced in a manner to vary the filter density in the optical coupling region and thereby vary the attenuation across the device. A resistor coupled to the attenuator provides means for calibration of the attenuator to provide a highly accurate and reproducible attenuation.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: February 27, 1990
    Assignee: Light Control Systems, Inc.
    Inventor: Thomas W. Tamulevich