| 摘要 |
An illumination device (1) and methods for producing said device and parts thereof for backlighting a liquid crystal display (3, Figure 1) wherein the illumination device comprises a solid substrate 5 containing at least one groove 11 and an optical fibre (7) comprising an inner core 23 and an outer cladding layer 25 fitted into the groove(s) 11. The outer cladding layer 25 is of reduced thickness on the exposed side of the core 23 such that, light supplied along the optical fibre (7) from a light source (9), is transversely emitted from the optical fibre through the reduced thickness layer 14. The light source may be a laser diode and may be multi-colored. The reduction in cladding thickness may be made before, or after, the optical fibres are immobilised in the groove. <IMAGE>
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