Improvements in or relating to borescopes

Details Improvements in or relating to borescopes Improvements in or relating to borescopes

1987-10-30

1989-04-18

Corbin, John K.

Surgery

Truss

Pad

128 6, 350573, 356241, G02B 2324

Patent

active

048221546

ABSTRACT:
An optical assembly 7, 8 providing an optical relay of a borescope 1 has a plurality of lenses 7 spaced apart by tubular spacers 8 through which the optical path extends. The spacers 8 include formations 9, 10 and 11 for connecting adjacent spacers and for housing the lenses 7 such that the spacers 8 and the lenses form a self supporting assembly. The optical assembly 7, 8 locates in a window tube 19 located within a tubular shaft 2 with a fibre optic bundle 16 occupying a duct 17 formed between the window tube and the shaft. The borescope 1 is convenient to assemble with minimum contamination and maximizes the optical path cross sectional area available.

REFERENCES:
patent: 689220 (1901-12-01), Parrish
patent: 737844 (1903-09-01), Hubbard
patent: 2138067 (1938-11-01), Mossberg
patent: 2453862 (1948-11-01), Salisbury
patent: 3297022 (1967-01-01), Wallace
patent: 3326620 (1967-06-01), Marie
patent: 4148551 (1979-04-01), MacAnally
patent: 4173392 (1979-11-01), Ekinaka et al.
patent: 4616631 (1986-10-01), Takahashi

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