Patents Assigned to RAYTEK
  • Infrared intrusion detector with field of view locator
    Patent number: 4642454
    Abstract: Passive infrared intrusion detector with means for determining the location of the fields of view covered by the system. In one disclosed embodiment, a small mirror is positioned near the sensing element and oriented so that a person looking at this mirror sees the fields of view through the optical system of the detector. A reference mark on the mirror appears in each of the fields seen by the person.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: February 10, 1987
    Assignee: Raytek, Inc.
    Inventor: Paul S. Carlson
  • Hand-held digital temperature measuring instrument
    Patent number: 4634294
    Abstract: Hand-held instrument for measuring the temperature of a target without contact with the target. The instrument utilizes a microprocessor and a digital display to calculate and indicate different temperature functions. Compensation is included for the effects of emissivity and ambient temperature changes which otherwise could result in inaccurate readings. Temperature trend direction liquid crystal arrow(s) actuated by the microprocessor are included in the display.
    Type: Grant
    Filed: May 12, 1981
    Date of Patent: January 6, 1987
    Assignee: Raytek, Inc.
    Inventors: James T. Christol, Michael R. Jacobs, Herbert L. Berman