Small diameter, deep bore optical inspection system
Abstract
An improved rod optic system for inspecting small diameter, deep bores. The system consists of a rod optic system utilizing a curved mirror at the end of the rod lens such that the optical path through the system is bent 90.degree. to minimize optical distortion in examining the sides of a curved bore. The system is particularly useful in the examination of small bores for corrosion, and is capable of examining 1/16 inch diameter and up to 4 inch deep drill holes, for example. The positioning of the curved mirror allows simultaneous viewing from shallow and right angle points of observation of the same artifact (such as corrosion) in the bore hole. The improved rod optic system may be used for direct eye sighting, or in combination with a still camera or a low-light television monitor; particularly low-light color television.
- Inventors:
-
- Livermore, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 863943
- Patent Number(s):
- 4281929
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- diameter; deep; bore; optical; inspection; improved; rod; optic; inspecting; bores; consists; utilizing; curved; mirror; lens; path; bent; 90; degree; minimize; distortion; examining; particularly; useful; examination; corrosion; capable; 16; inch; drill; holes; example; positioning; allows; simultaneous; viewing; shallow; angle; observation; artifact; direct; eye; sighting; combination; camera; low-light; television; monitor; color; curved mirror; rod optic; particularly useful; optical path; optical inspection; optical distortion; television monitor; rod lens; improved rod; light color; /356/385/
Citation Formats
Lord, David E, Petrini, Richard R, and Carter, Gary W. Small diameter, deep bore optical inspection system. United States: N. p., 1981.
Web.
Lord, David E, Petrini, Richard R, & Carter, Gary W. Small diameter, deep bore optical inspection system. United States.
Lord, David E, Petrini, Richard R, and Carter, Gary W. Thu .
"Small diameter, deep bore optical inspection system". United States. https://www.osti.gov/servlets/purl/863943.
@article{osti_863943,
title = {Small diameter, deep bore optical inspection system},
author = {Lord, David E and Petrini, Richard R and Carter, Gary W},
abstractNote = {An improved rod optic system for inspecting small diameter, deep bores. The system consists of a rod optic system utilizing a curved mirror at the end of the rod lens such that the optical path through the system is bent 90.degree. to minimize optical distortion in examining the sides of a curved bore. The system is particularly useful in the examination of small bores for corrosion, and is capable of examining 1/16 inch diameter and up to 4 inch deep drill holes, for example. The positioning of the curved mirror allows simultaneous viewing from shallow and right angle points of observation of the same artifact (such as corrosion) in the bore hole. The improved rod optic system may be used for direct eye sighting, or in combination with a still camera or a low-light television monitor; particularly low-light color television.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1981},
month = {Thu Jan 01 00:00:00 EST 1981}
}