Searching and measuring endoscope
AssigneeWarner Lambert Technologies, Inc.
InventorWalter P. Siegmund
Life of this patent
Estimating the term…
Abstract
A searching and measuring endoscope employing two image-transmitting systems in a common housing. One system is fitted with a wide angle, fixed focus objective lens with large depth of field for searching and the other system is fitted with a narrow angle, fixed focus objective lens having a small depth of field and a predetermined working distance and magnification for measuring.
Claims23
In a visual inspection unit of the type used to observe flaws, cracks, or other defects or imperfections of matter in industrial, medical or veterinary situations located remotely relative to an observer an assembly for searching and measuring comprising:
- at least two image-transmitting systems each fitted with an objective lens at a distal end all enclosed in a common housing,
- a first image-transmitting system being fitted with a wide angle, fixed focus objective lens with corresponding large depth of field for searching and locating a critical area;
- and
- a second image-transmitting system being fitted with a narrow angle, fixed focus objective lens, said narrow angle lens having a relatively small depth of field and a relatively short, predetermined working distance and said second system having a predetermined magnification when in sharp focus while observing selected portions of said critical area.
Dependencies are inferred from the claim text.