Method and apparatus for turbine internal visual inspection with foveated image optical head
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United States of America Patent
Stats
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Mar 6, 2018
Issued Date -
N/A
app pub date -
Jan 21, 2015
filing date -
Jan 21, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Combustion or steam turbine engines internal areas of interest are inspected by insertion of a foveated image optical head through internal passages within the engine. The foveated image optical head has a central first image portion having higher magnification and smaller field of view that is included within and subtended by a second image portion having a wider field of view and lower magnification. The foveated image optical head facilitates maneuvering the borescope optical head through the turbine engine with the wider field of view second image portion to areas of interest, then performing a more detailed inspection by viewing the higher magnification first image portion. The optical head lenses are in fixed positions, sharing a single, common optical path and a common electronic image sensor. This lens and detector arrangement facilitates construction of a compact optical head, allowing passage through small diameter engine inspection ports.
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International Classification(s)
- 2015 Application Filing Year
- H04N Class
- 17427 Applications Filed
- 14242 Patents Issued To-Date
- 81.73 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H04N Class
- 0 % this patent is cited more than
- 7 Age
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