| 摘要 |
Disclosed is an intrinsically-safe system for mineshaft illumination. The system includes a main optical fiber bundle that receives light from a light source at one end and disperses the light into a mineshaft or tunnel through diffusers attached to the other end of the fibers. The light from the light source is first passed through a non-imaging optical tube, so as to evenly distribute the light, and then through a tapering bundle of optical fibers that focus the light into the entry end of the main optical fiber bundle. Accordingly, light is distributed to the mineshaft without the risk of potential explosion of accumulated gases that may be present in the mineshaft.
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