
4 0 c m
33cm
actual image size: 25cm x 32cm
Description
A motor car headlamp with a lens and reflector, incorporating the lens arrangement patented by Mr H Lucas in 1905. The central forward rays were projected through the lens as a parallel beam, with the backward rays returned by the central reflector to the focus and through the lens in the same way.
Image Details
Image Ref.
10217226
© Science Museum / Science & Society Picture Library