Light emitting diode based PAPI design incorporating linear diode arrays, cylindrical optics, and linear light combining mirror

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United States of America Patent

SERIAL NO

13987059

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Abstract

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This invention presents a method for overcoming limitation in brightness and heating effects for LED based Precision Approach Path Indicators and allowing both colors to be imaged in the far field with the proper abrupt transition between the red and white sectors. This method relies on the use of linear arrays of LED's and cylindrical optics.

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LASER GUIDANCE INC14746 NE 95TH STREET REDMOND WA 98052-2519

International Classification(s)

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  • 2013 Application Filing Year
  • F21V Class
  • 3052 Applications Filed
  • 2652 Patents Issued To-Date
  • 86.90 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20132014201520162017201820192020202120220255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Shemwell, David Mark Newcastle, US 7 4
Vetter, Alan August Duarte, US 3 3

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Patent Citation Ranking

  • 2 Citation Count
  • F21V Class
  • 9.38 % this patent is cited more than
  • 10 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges85543166452714121231701 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +0255075100125150175200225250275300325350375400425450475500525550575

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