Nonimaging Optical Illumination System

Winston, Roland

Title: Nonimaging Optical Illumination System

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Abstract

A nonimaging illumination or concentration optical device. An optical device is provided having a light source, a light reflecting surface with an opening and positioned partially around the light source which is opposite the opening of the light reflecting surface. The light reflecting surface is disposed to produce a substantially uniform intensity output with the reflecting surface defined in terms of a radius vector R.sub.i in conjunction with an angle .phi..sub.i between R.sub.i, a direction from the source and an angle .theta..sub.i between direct forward illumination and the light ray reflected once from the reflecting surface. R.sub.i varies as the exponential of tan (.phi..sub.i -.theta..sub.i)/2 integrated over .phi..sub.i.

Inventors:

Winston, Roland ^[1]

Chicago, IL

Issue Date:: 1994-02-22

Research Org.:: Univ. of Chicago, IL (United States)

OSTI Identifier:: 879181

Patent Number(s):: 5289356

Application Number:: 07/732982

Assignee:: NiOptics Corporation (Evanston, IL)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F21 - LIGHTING F21V - FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF

F - MECHANICAL ENGINEERING F24 - HEATING F24S - SOLAR HEAT COLLECTORS

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F - MECHANICAL ENGINEERING F21 - LIGHTING F21V - FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF
F21V7/005 - {with an elongated shape to cooperate with linear light sources}
F21V7/04 - Optical design

F - MECHANICAL ENGINEERING F24 - HEATING F24S - SOLAR HEAT COLLECTORS
F24S2023/838 - {involutes}
F24S23/80 - {having discontinuous faces}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
Y02E10/40 - Solar thermal energy

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DOE Contract Number:: FG02-87ER13726

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Citation Formats


                    Winston, Roland. Nonimaging Optical Illumination System.  United States: N. p., 1994. 
        Web.

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                    Winston, Roland. Nonimaging Optical Illumination System.  United States.

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                    Winston, Roland. Tue .  
        "Nonimaging Optical Illumination System".  United States.  https://www.osti.gov/servlets/purl/879181.

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@article{osti_879181,

  title        = {Nonimaging Optical Illumination System},

  author       = {Winston, Roland},

  abstractNote = {A nonimaging illumination or concentration optical device. An optical device is provided having a light source, a light reflecting surface with an opening and positioned partially around the light source which is opposite the opening of the light reflecting surface. The light reflecting surface is disposed to produce a substantially uniform intensity output with the reflecting surface defined in terms of a radius vector R.sub.i in conjunction with an angle .phi..sub.i between R.sub.i, a direction from the source and an angle .theta..sub.i between direct forward illumination and the light ray reflected once from the reflecting surface. R.sub.i varies as the exponential of tan (.phi..sub.i -.theta..sub.i)/2 integrated over .phi..sub.i.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1994},

  month        = {2}

}

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