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Title: Crystal diffraction lens with variable focal length

Abstract

A method and apparatus for altering the focal length of a focusing element o one of a plurality of pre-determined focal lengths by changing heat transfer within selected portions of the element by controlled quantities. Control over heat transfer is accomplished by manipulating one or more of a number of variables, including: the amount of heat or cold applied to surfaces; type of fluids pumped through channels for heating and cooling; temperatures, directions of flow and rates of flow of fluids; and placement of channels.

Inventors:
 [1]
  1. Hinsdale, IL
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
OSTI Identifier:
867760
Patent Number(s):
5004319
Assignee:
United States of America as represented by Department of Energy (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
G - PHYSICS G02 - OPTICS G02F - DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
crystal; diffraction; lens; variable; focal; length; method; apparatus; altering; focusing; element; plurality; pre-determined; lengths; changing; heat; transfer; selected; portions; controlled; quantities; control; accomplished; manipulating; variables; including; amount; cold; applied; surfaces; type; fluids; pumped; channels; heating; cooling; temperatures; directions; flow; rates; placement; focal length; heat transfer; selected portion; selected portions; crystal diffraction; focusing element; focal lengths; changing heat; controlled quantities; /359/378/

Citation Formats

Smither, Robert K. Crystal diffraction lens with variable focal length. United States: N. p., 1991. Web.
Smither, Robert K. Crystal diffraction lens with variable focal length. United States.
Smither, Robert K. Tue . "Crystal diffraction lens with variable focal length". United States. https://www.osti.gov/servlets/purl/867760.
@article{osti_867760,
title = {Crystal diffraction lens with variable focal length},
author = {Smither, Robert K},
abstractNote = {A method and apparatus for altering the focal length of a focusing element o one of a plurality of pre-determined focal lengths by changing heat transfer within selected portions of the element by controlled quantities. Control over heat transfer is accomplished by manipulating one or more of a number of variables, including: the amount of heat or cold applied to surfaces; type of fluids pumped through channels for heating and cooling; temperatures, directions of flow and rates of flow of fluids; and placement of channels.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}

Patent:

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