| 摘要 |
A mirror arrangement (10) for a rear view mirror system comprises three mirrors (14, 16, 18). The first mirror (14) is a concave off-axis parabolic mirror arranged adjacent the eyes of the user with a principal axis and effective focal length f1. The second mirror (16) is substantially flat and is arranged between the first and third mirrors (14, 18). The third mirror (18) is a convex off axis parabolic mirror having a principal axis under an effective focal f3. The first and third mirrors (14, 18) have a common focus and the parabolas of the first and third mirrors (14, 18) are related such that 1.5 f1<=f3 <=3f1. In another aspect of the invention a mounting arrangement (24) for a rear view mirror system comprises an article of headgear (12) with a channel (20) formed therein and a mirror assembly mounted on the article of headgear so as to bridge the channel. The mirror assembly has series of lugs (26) protruding from the longitudinal edges thereof. The article of headgear has a series of recesses (28) arranged to receive the lugs (26) on the mirror assembly arranged along both edges of the channel (20). |
