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Title: Liquid crystal devices especially for use in liquid crystal point diffraction interferometer systems

Abstract

Liquid crystal point diffraction interferometer (LCPDI) systems that can provide real-time, phase-shifting interferograms that are useful in the characterization of static optical properties (wavefront aberrations, lensing, or wedge) in optical elements or dynamic, time-resolved events (temperature fluctuations and gradients, motion) in physical systems use improved LCPDI cells that employ a "structured" substrate or substrates in which the structural features are produced by thin film deposition or photo resist processing to provide a diffractive element that is an integral part of the cell substrate(s). The LC material used in the device may be doped with a "contrast-compensated" mixture of positive and negative dichroic dyes.

Inventors:
 [1]
  1. Rochester, NY
Issue Date:
Research Org.:
The University of Rochester (Rochester, NY)
Sponsoring Org.:
USDOE
OSTI Identifier:
988293
Patent Number(s):
7492439
Application Number:
10/945,753
Assignee:
The University of Rochester (Rochester, NY)
Patent Classifications (CPCs):
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
G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
DOE Contract Number:  
FC03-92SF19460
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Marshall, Kenneth L. Liquid crystal devices especially for use in liquid crystal point diffraction interferometer systems. United States: N. p., 2009. Web.
Marshall, Kenneth L. Liquid crystal devices especially for use in liquid crystal point diffraction interferometer systems. United States.
Marshall, Kenneth L. Tue . "Liquid crystal devices especially for use in liquid crystal point diffraction interferometer systems". United States. https://www.osti.gov/servlets/purl/988293.
@article{osti_988293,
title = {Liquid crystal devices especially for use in liquid crystal point diffraction interferometer systems},
author = {Marshall, Kenneth L},
abstractNote = {Liquid crystal point diffraction interferometer (LCPDI) systems that can provide real-time, phase-shifting interferograms that are useful in the characterization of static optical properties (wavefront aberrations, lensing, or wedge) in optical elements or dynamic, time-resolved events (temperature fluctuations and gradients, motion) in physical systems use improved LCPDI cells that employ a "structured" substrate or substrates in which the structural features are produced by thin film deposition or photo resist processing to provide a diffractive element that is an integral part of the cell substrate(s). The LC material used in the device may be doped with a "contrast-compensated" mixture of positive and negative dichroic dyes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {2}
}

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Works referenced in this record:

Recent advances in the development of phase-shifting liquid crystal interferometers for visible and near-IR applications
conference, November 2003


Liquid-crystal point-diffraction interferometer for wave-front measurements
journal, January 1996


Liquid-crystal point-diffraction interferometer
journal, January 1994