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Title: Apparatus and methods for imaging interior surfaces of a tube or the like

An exemplary device includes, on a longitudinal axis, an illumination-light source, an axicon (conic) mirror, an image sensor, and a tilted optical element. The light source provides illumination light propagating forwardly on the axis. The axicon mirror reflects the illumination light radially outward, relative to the axis, to the interior surface of a tube to produce reflected light propagating, from the illuminated interior surface, as imaging light back to the axicon, which reflects the imaging light rearwardly. The image sensor receives at least a portion of the imaging light rearwardly reflected by the axicon mirror. The tilted optical element, situated between the axicon mirror and the interior surface, moves a selected first portion of the imaging light away from being incident on the image sensor, while allowing a second portion of the imaging light to be incident on the image sensor.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1459554
Assignee:
UT-Battelle, LLC (Oak Ridge, TN) ORNL
Patent Number(s):
10,009,526
Application Number:
14/180,062
Contract Number:
AC05-00OR22725
Resource Relation:
Patent File Date: 2014 Feb 13
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English

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