BOROSCOPE AND A METHOD OF PROCESSING A COMPONENT WITHIN AN ASSEMBLED APPARATUS USING A BOROSCOPE

摘要

A boroscope has a first end and a second end and the first end of the boroscope has an optical fibre, a light source, a lens, a beam expander and a transmissive diffractive optical element. The optical fibre extends from the first end of the boroscope to the second end of the boroscope. A laser optical fibre extends from the lens at the first end of the boroscope to the second end of the boroscope and a laser source is arranged to direct a laser beam into the laser optical fibre. The beam expander is provided between the laser optical fibre and the lens and the lens is provided between the beam expander and the transmissive diffractive optical element. The transmissive diffractive optical element is arranged to produce a laser beam with a predetermined shape and a focal length probe extends from the first end of the boroscope.