Illumination – Revolving
Patent
1992-01-22
1994-08-23
Cole, Richard R.
Illumination
Revolving
362293, 362294, 359385, 385 31, F21V 704
Patent
active
053412753
ABSTRACT:
An apparatus is provided for illuminating a fiber optic cable. A light source projects an illuminating light beam through a cold mirror placed at approximately a 45.degree. angle to the direction of the light beam, whereby a visible component of the light beam is reflected in a direction normal to the light beam while a heat component of the light beam is passed through the cold mirror. A heat sink absorbs the heat component of the light beam. A ventilation duct at the heat sink is also included to conduct convective heat away from the apparatus. A plano-convex lens focuses the light beam at a focal point in space. A conduit support is included to support the fiber optic cable in a position incident to the light beam. The support has a cone-shaped aperture positioned coaxially with a diverging cone of the light beam from the focal point, and receives the diverging cone therein such that the conduit, coaxially inserted into the cone-shaped aperture, accommodates the total diverging cone of the light beam thereon. A heat shield is positioned in the path of the light beam, the shield having an aperture for passing the light beam therethrough while absorbing heat therein. A variable bandpass filter is positioned at the focal point of the light beam for passing a specific color of light therethrough, and includes a plurality of discrete filter elements and a motor for positioning any of the elements in the path of the light beam. A variable density filter is positioned in the path of the light beam for controlling the amount of light passing therethrough to the conduit.
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Cariaso Alan B.
Cole Richard R.
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