| 摘要 |
An article of headgear comprises a helmet (10) comprising an outer protective shell (12), a channel (54) through the helmet (10) inside the shell (12) and a one-piece mounting (18) in the roof of the channel (54). The mounting (18) is made of plastics and has three or five mirrors (23, 26, 40) metallised onto it to face into the channel (54). The mounting (18) may be mounted to the shell (12), or may be mounted on the channel (54). The mirrors (23, 26, 40) and channel (54) enable a person wearing the helmet to see through the channel (54). The first mirror (23) is parabolically concave and the final mirror (40) is parabolically convex.
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