System and method for optically locating microchannel positions

Brewer, Laurence R; Kimbrough, Joseph; Balch, Joseph; Davidson, J Courtney

Title: System and method for optically locating microchannel positions

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Abstract

A system and method is disclosed for optically locating a microchannel position. A laser source generates a primary laser beam which is directed at a microchannel plate. The microchannel plates include microchannels at various locations. A back-reflectance beam detector receives a back-reflected beam from the plate. The back-reflected beam is generated when the primary beam reflects off of the plate. A photodiode circuit generates a trigger signal when the back-reflected beam exceeds a predetermined threshold, indicating a presence of the microchannel. The method of the present invention includes the steps of generating a primary beam, directing the primary beam to a plate containing a microchannel, receiving from the plate a back-reflected beam generated in response to the primary beam, and generating a trigger signal when the back-reflected beam exceeds a predetermined threshold which corresponds to a presence of the microchannel.

Inventors:

Brewer, Laurence R ^[1]; Kimbrough, Joseph ^[2]; Balch, Joseph ^[3]; Davidson, J Courtney ^[3]

Oakland, CA
Pleasanton, CA
Livermore, CA

Issue Date:: 2001-01-01

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

OSTI Identifier:: 873704

Patent Number(s):: 6225635

Assignee:: Regents of University of California (Oakland, CA)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

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G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N27/44721 - {by optical means}

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DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: method; optically; locating; microchannel; positions; disclosed; position; laser; source; generates; primary; beam; directed; plate; plates; microchannels; various; locations; back-reflectance; detector; receives; back-reflected; generated; reflects; photodiode; circuit; trigger; signal; exceeds; predetermined; threshold; indicating; presence; steps; generating; directing; containing; receiving; response; corresponds; channel plate; circuit generates; predetermined threshold; laser beam; laser source; microchannel plate; plate containing; primary beam; trigger signal; reflected beam; various locations; microchannel plates; source generates; beam detector; beam generated; optically locating; microchannel position; source generate; detector receives; /250/

Citation Formats


                    Brewer, Laurence R, Kimbrough, Joseph, Balch, Joseph, and Davidson, J Courtney. System and method for optically locating microchannel positions.  United States: N. p., 2001. 
        Web.

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                    Brewer, Laurence R, Kimbrough, Joseph, Balch, Joseph, & Davidson, J Courtney. System and method for optically locating microchannel positions.  United States.

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                    Brewer, Laurence R, Kimbrough, Joseph, Balch, Joseph, and Davidson, J Courtney. Mon .  
        "System and method for optically locating microchannel positions".  United States.  https://www.osti.gov/servlets/purl/873704.

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@article{osti_873704,

  title        = {System and method for optically locating microchannel positions},

  author       = {Brewer, Laurence R and Kimbrough, Joseph and Balch, Joseph and Davidson, J Courtney},

  abstractNote = {A system and method is disclosed for optically locating a microchannel position. A laser source generates a primary laser beam which is directed at a microchannel plate. The microchannel plates include microchannels at various locations. A back-reflectance beam detector receives a back-reflected beam from the plate. The back-reflected beam is generated when the primary beam reflects off of the plate. A photodiode circuit generates a trigger signal when the back-reflected beam exceeds a predetermined threshold, indicating a presence of the microchannel. The method of the present invention includes the steps of generating a primary beam, directing the primary beam to a plate containing a microchannel, receiving from the plate a back-reflected beam generated in response to the primary beam, and generating a trigger signal when the back-reflected beam exceeds a predetermined threshold which corresponds to a presence of the microchannel.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2001},

  month        = {1}

}

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