| 摘要 |
<p>Fibre-optic lamp for use as a light source in spotlights, signalling lights, instruments, lighting units or similar, to which a fibre bundle or fibre cable (13) carries light from a conventional light source. At the upward end the individual fibres (1) are aimed with mutually converging light cones in such a way that these diverge (3) after convergence region with little or no overlap and thus together form a composite virtual light source with a greater numerical aperture than a single fibre (1) or a parallel fibre bundle can have. The fibres can either be aimed towards a single point (5) which may for example be the focus of a collimating lens (2), or towards different points (5, 7, 8) to correct lens defects, for example. The fibres (1) are individually aligned by and secured in a fixture (15, 17, 21, 25, 27) which can also act, for example, as a collimating lens (22).</p> |
