Keymed (medical & Industrial Equipment) Limited

Philip Michael Coath

Jennifer M Harley

Andrew Paul Ramsbottom

Barry Edward Luke

David Muston

Naeem A Sayed

Russell Manoy

Stuart M Greengrass

Robert James McLean

Andrew Scagell

Mouthpiece for use with endoscope

A monocular borescope or endoscope is provided with an image relaying means ( ) defining a longitudinal axis (L)(and with a viewing means comprising an ocular lens ( ) and field mask ( ) defining a central axis (C) which is parallel to and offset from the longitudinal axis (L). In one embodiment the ocular lens ( ) is coincident with the central axis (C) of the mask ( ), while in another embodiment the ocular lens ( ) is coincident with the longitudinal axis (L). The mask ( ) is arranged to be mountable in a number of different rotational orientations each providing a different offset between the longitudinal axis (L) and the central axis (C).

Monocular borescope or endoscope with offset mask

Digital measuring scope with thermal compensation

Optical instrument with an anti-backlash focusing mechanism

Apparatus (1) for use as an endoscope or borescope comprising an outer tube (2) having a distal end (3) which is insertable into an inaccessible location to be inspected and a proximal end (4) which is accessible to the user. A zoom lens is provided within the outer tube adjacent the distal end and is operable to focus an image with variable magnification at a focal plane within the outer tube. The zoom lens comprises an objective lens (7) which is fixed relative to the outer tube and two independently movable lenses (8,13). An elongate viewing means (43) is provided for viewing the image and extends through the outer tube from a location at the focal plane to a location proximal of the proximal end. A cam operated actuating means (29,21) is operable to move the movable lenses to change magnification and to synchronously move the viewing means relative to the objective lens to compensate for movement of the focal plane. Refocussing of the apparatus following adjustment of magnification is thereby carried out automatically.

Endoscopic zoom lens

Storage case for medical instrument

Growing community of inventors

Hockley, United Kingdom

Philip Michael Coath