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:
-
- Hinsdale, IL
- Issue Date:
- Research Org.:
- Argonne National Laboratory (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 = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.