Light collection optics for measuring flux and spectrum from light-emitting devices

Title: Light collection optics for measuring flux and spectrum from light-emitting devices

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Abstract

Systems and methods for accurately measuring the luminous flux and color (spectra) from light-emitting devices are disclosed. An integrating sphere may be utilized to directly receive a first portion of light emitted by a light-emitting device through an opening defined on the integrating sphere. A light collector may be utilized to collect a second portion of light emitted by the light-emitting device and direct the second portion of light into the integrating sphere through the opening defined on the integrating sphere. A spectrometer may be utilized to measure at least one property of the first portion and the second portion of light received by the integrating sphere.

Inventors:: McCord, Mark A.; DiRegolo, Joseph A.; Gluszczak, Michael R.

Issue Date:: 2016-05-24

Research Org.:: KLA-Tencor Corporation, Milpitas, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1254166

Patent Number(s):: 9347824

Application Number:: 14/527,034

Assignee:: KLA-Tencor Corporation (Milpitas, CA)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT

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G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
G01J2001/4252 - {for testing LED's}
G01J2001/0481 - {Preset integrating sphere or cavity}
G01J3/505 - {measuring the colour produced by lighting fixtures other than screens, monitors, displays or CRTs}
G01J1/0214 - {Constructional arrangements for removing stray light}
G01J1/0407 - {Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings}
G01J3/0251 - {Colorimeters making use of an integrating sphere}
G01J3/28 - Investigating the spectrum
G01J3/0262 - {Constructional arrangements for removing stray light}

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DOE Contract Number:: EE0005877

Resource Type:: Patent

Resource Relation:: Patent File Date: 2014 Oct 29

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    McCord, Mark A., DiRegolo, Joseph A., and Gluszczak, Michael R. Light collection optics for measuring flux and spectrum from light-emitting devices.  United States: N. p., 2016. 
        Web.

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                    McCord, Mark A., DiRegolo, Joseph A., & Gluszczak, Michael R. Light collection optics for measuring flux and spectrum from light-emitting devices.  United States.

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                    McCord, Mark A., DiRegolo, Joseph A., and Gluszczak, Michael R. Tue .  
        "Light collection optics for measuring flux and spectrum from light-emitting devices".  United States.  https://www.osti.gov/servlets/purl/1254166.

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@article{osti_1254166,

  title        = {Light collection optics for measuring flux and spectrum from light-emitting devices},

  author       = {McCord, Mark A. and DiRegolo, Joseph A. and Gluszczak, Michael R.},

  abstractNote = {Systems and methods for accurately measuring the luminous flux and color (spectra) from light-emitting devices are disclosed. An integrating sphere may be utilized to directly receive a first portion of light emitted by a light-emitting device through an opening defined on the integrating sphere. A light collector may be utilized to collect a second portion of light emitted by the light-emitting device and direct the second portion of light into the integrating sphere through the opening defined on the integrating sphere. A spectrometer may be utilized to measure at least one property of the first portion and the second portion of light received by the integrating sphere.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2016},

  month        = {5}

}

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