Fiber-type dosimeter with improved illuminator
Patent
·
OSTI ID:866380
- Oak Ridge, TN
A single-piece, molded plastic, Cassigrainian-type condenser arrangement is incorporated in a tubular-shaped personal pocket dosimeter of the type which combines an ionization chamber with an optically-read fiber electrometer to provide improved illumination of the electrometer fiber. The condenser routes incoming light from one end of the dosimeter tubular housing around a central axis charging pin assembly and focuses the light at low angles to the axis so that it falls within the acceptance angle of the electrometer fiber objective lens viewed through an eyepiece lens disposed in the opposite end of the dosimeter. This results in improved fiber illumination and fiber image contrast.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
- DOE Contract Number:
- W-7405-ENG-26
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 4697084
- OSTI ID:
- 866380
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/250/359/
acceptance
acceptance angle
angle
angles
arrangement
assembly
axis
cassigrainian-type
central
central axis
chamber
charging
combines
condenser
contrast
disposed
dosimeter
electrometer
eyepiece
falls
fiber
fiber-type
focuses
housing
illumination
illuminator
image
improved
improved fiber
incoming
incoming light
incorporated
ionization
ionization chamber
lens
light
molded
objective
objective lens
opposite
optically-read
personal
plastic
pocket
pocket dosimeter
provide
provide improve
provide improved
results
routes
single-piece
tubular
tubular housing
tubular-shaped
type
type dosimeter
viewed
acceptance
acceptance angle
angle
angles
arrangement
assembly
axis
cassigrainian-type
central
central axis
chamber
charging
combines
condenser
contrast
disposed
dosimeter
electrometer
eyepiece
falls
fiber
fiber-type
focuses
housing
illumination
illuminator
image
improved
improved fiber
incoming
incoming light
incorporated
ionization
ionization chamber
lens
light
molded
objective
objective lens
opposite
optically-read
personal
plastic
pocket dosimeter
provide
provide improve
provide improved
results
routes
single-piece
tubular
tubular housing
tubular-shaped
type
type dosimeter
viewed