| 摘要 |
In order to selectively illuminate scientific instruments, such as the field of view of a high grade microscope, with light having predetermined characteristics, an adapter is provided for coupling a conventional lamphouse to a fiber optic bundle which terminates, at it remote end, at the area to be illuminated. The adapter is provided with fittings to mate with lamphouse and contains a collector lens or lens group to concentrate and collimate light from the lamphouse onto the transmitting end of the fiber bundle. The adapter is generally cylindrical in shape and, intermediate along its length, a circumferential segment is cut away to receive one or more filters to condition the light issued from the lamphouse according to the illumination requirements. The characteristics of the light transmitted through the fiber bundle may further be controlled by selecting the lamp utilized in the lamphouse. In variant configurations, the adapter incorporates a right angle prism at its outer end to permit the fiber bundle to be directed radially outwardly from the adapter to minimize the extent of the adapter from the lamphouse, which extent may be a critical factor where the lamphouse is installed permanently near a wall or other object with which the adapter might otherwise physically interfere. A conventional shutter mechanism is incorporated into another variant of the adapter for providing the capability of controlled transient illumination to the scientific instrument receiving light from the fiber bundle.
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