Mirror with thermally controlled radius of curvature

Neil, George R.; Shinn, Michelle D.

Title: Mirror with thermally controlled radius of curvature

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Abstract

A radius of curvature controlled mirror for controlling precisely the focal point of a laser beam or other light beam. The radius of curvature controlled mirror provides nearly spherical distortion of the mirror in response to differential expansion between the front and rear surfaces of the mirror. The radius of curvature controlled mirror compensates for changes in other optical components due to heating or other physical changes. The radius of curvature controlled mirror includes an arrangement for adjusting the temperature of the front surface and separately adjusting the temperature of the rear surface to control the radius of curvature. The temperature adjustment arrangements can include cooling channels within the mirror body or convection of a gas upon the surface of the mirror. A control system controls the differential expansion between the front and rear surfaces to achieve the desired radius of curvature.

Inventors:: Neil, George R.; Shinn, Michelle D.

Issue Date:: 2010-06-22

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1176375

Patent Number(s):: 7740362

Application Number:: 12/070,522

Assignee:: Jefferson Science Associates (Newport News, VA)

Patent Classifications (CPCs):: G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

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G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
G02B26/0816 - {by means of one or more reflecting elements}
G02B5/08 - Mirrors {
G02B7/1815 - {with cooling or heating systems

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DOE Contract Number:: AC05-85ER40150

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats


                    Neil, George R., and Shinn, Michelle D. Mirror with thermally controlled radius of curvature.  United States: N. p., 2010. 
        Web.

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                    Neil, George R., & Shinn, Michelle D. Mirror with thermally controlled radius of curvature.  United States.

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                    Neil, George R., and Shinn, Michelle D. Tue .  
        "Mirror with thermally controlled radius of curvature".  United States.  https://www.osti.gov/servlets/purl/1176375.

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@article{osti_1176375,

  title        = {Mirror with thermally controlled radius of curvature},

  author       = {Neil, George R. and Shinn, Michelle D.},

  abstractNote = {A radius of curvature controlled mirror for controlling precisely the focal point of a laser beam or other light beam. The radius of curvature controlled mirror provides nearly spherical distortion of the mirror in response to differential expansion between the front and rear surfaces of the mirror. The radius of curvature controlled mirror compensates for changes in other optical components due to heating or other physical changes. The radius of curvature controlled mirror includes an arrangement for adjusting the temperature of the front surface and separately adjusting the temperature of the rear surface to control the radius of curvature. The temperature adjustment arrangements can include cooling channels within the mirror body or convection of a gas upon the surface of the mirror. A control system controls the differential expansion between the front and rear surfaces to achieve the desired radius of curvature.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2010},

  month        = {6}

}

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