An Anti-dazzle Device Tested
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DTIRING the past few weeks we have had under test an anti-dazzle device marketed by Auto Safety Appliances, Ltd., 20, Renfrew Street, Glasgow, C.2. This is known as the Green Eye. It consists, of a curved‘ and polished metal plate fitting around the cap of the headlamp bulb. This carries three screwed metal bars upon which rests a metal reflector, mounted above and slightly in front of the bulb. In the lower plate is a small green glass window. The cost of the standard model is 12s. 6d. per pair.
On receipt of the devices they were fitted in accordance with instructions, anti the lamp bulbs duly focused. From the point of view of a pedestrian it was almost impossible to be dazzled except when the line of vision came below the centre line of the headlamps. This effect was only obtained when the vehicle was breasting a steep gradient and the observer was situated on the otherkide of the summit. In normal
circumstances the eyes of persons on the footpath were unaffected. So far as could be judged by the conduct Of other drivers, they suffered DO inconvenience from the headlights of the vehicle under test.
From the user's point of view the normaldriving light was not appreciably limited, except when descending into a dip. This was caused by the cutting off of the upper rays which are only required in circumstances of this kind. Normally the driving light carried as far ahead as the power of the bulbs allowed. An effect noticed when the Green Eye was in action was an intensified spreading of the light to the sides of the road.
A claim made in respect Of the Green Eye is that the driver can safely use headlights in foggy weather, owing to the cutting off of the upward rays. During the period of trial we were not able to test this claim, owing to the satisfactory weather conditions.