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Title: Techniques for optically compressing light intensity ranges

Abstract

A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter. 18 figs.

Inventors:
Issue Date:
OSTI Identifier:
7076983
Patent Number(s):
4815828
Application Number:
PPN: US 6-863912
Assignee:
Dept. of Energy, Washington, DC (United States)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Patent File Date: 16 May 1986
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPES AND RADIATION SOURCES; 47 OTHER INSTRUMENTATION; CAMERAS; DESIGN; LASER ISOTOPE SEPARATION; MONITORING; COMPRESSION; LIQUID METALS; OPTICAL FILTERS; URANIUM; VISIBLE RADIATION; ACTINIDES; ELECTROMAGNETIC RADIATION; ELEMENTS; FILTERS; FLUIDS; ISOTOPE SEPARATION; LIQUIDS; METALS; RADIATIONS; SEPARATION PROCESSES; 070100* - Physical Isotope Separation; 440600 - Optical Instrumentation- (1990-)

Citation Formats

Rushford, M C. Techniques for optically compressing light intensity ranges. United States: N. p., 1989. Web.
Rushford, M C. Techniques for optically compressing light intensity ranges. United States.
Rushford, M C. Tue . "Techniques for optically compressing light intensity ranges". United States.
@article{osti_7076983,
title = {Techniques for optically compressing light intensity ranges},
author = {Rushford, M C},
abstractNote = {A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter. 18 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {3}
}