Operating Manual

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Below is a description of the functional components of the borescope.
Imaging System
The imaging system includes the eyepiece optics, the optical lens train, and the distal lens
set.
The eyepiece magnifies the image carried back by the lens train for viewing by the human eye.
On most models the eyepiece includes a diopter focus adjustment so different users can adjust
the lens set to their particular vision prescription and use the borescope without glasses. All
GEInspectionTechnologies'eyepiecesareofstandard"DIN"designandthereforecompatible
with standard eyepiece attachments such as right-angle adapters and camera couplers.
The optical lens train is a set of precision-cut lenses placed in the shaft at specific distances
apart to carry the image in sharp focus back to the eyepiece. This lens train accounts for the
rigidborescope'sexcellentresolution,becausetheimageisneverbrokenintoafinitenumber
of optical fibers or video camera pixels.The image remains unpixelated all the way to the
operator's eye.
The distal lens set is a combination of lenses that capture images and focus them into the
optical lens train. This lens set determines the field of view and depth of field.
Illumination System
Theilluminationsystemincludesabundleoffiber-opticcablesthatextendsfromthelightguide
post to the viewing tip and any distal lenses at the tip that may focus or spread the light as it
is projected. This bundle serves as a conduit for light entering the post from a light guide, and
carries the light down the shaft to illuminate the target area for viewing.
Modelswitha"U"inthemodelnumberprefixcontainaspecialilluminationbundlemadeof
quartz fibers. These fibers provide optimum performance for transmitting ultraviolet light to the
inspection area and are purchased for use in applications where fluorescent dyes need to be
stimulated with ultraviolet light.
Industrial Borescope 7