Radiation power limiter

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6747607
SERIAL NO

07172120

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Abstract

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Disclosed herein is an arrangement for shielding electronic sensors from undesired microwave or millimeter wave radiation. In this arrangement, reflective element is disposed in the sensor path to intercept incoming signals. The reflective element has a pluraity of adjacent parallel ridges therein having sloped faces angled for reflecting incoming desired infrared radiation onto the sensor. The width of the ridges are selected so that desired signals will be reflected by the sloped ridge faces but undesired microwave or millimeter radiation will be reflected by the overall major surface of the mirror. Accordingly, undesired microwave or millimeter radiation will be reflected away from the sensor by the overall front major surface thereby preventing the sensor from being damaged.

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Patent Owner(s)

Patent OwnerAddress
DIRECTV LLC2260 E IMPERIAL HIGHWAY EL SEGUNDO CA 90245

International Classification(s)

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  • 1988 Application Filing Year
  • G01J Class
  • 310 Applications Filed
  • 10 Patents Issued To-Date
  • 3.23 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances1988198919901991199219931994199519961997199819992000200120022003200420052006200720082009201020112012201320142015201620170255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eckhardt, Wilfried O Malibu, CA 2 4
Williamson, Weldon S Malibu, CA 39 760

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  • 3 Citation Count
  • G01J Class
  • 3.95 % this patent is cited more than
  • 21 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges142046127211032212701 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +0102030405060708090100110120130140150160170180190200210220

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