OPTICAL DEVICE AND METHOD FOR MANUFACTURING SUCH A DEVICE

摘要

An optical device comprises an optical guide (1.5) adapted to propagate a light beam by successive total internal reflections and an injection device adapted to inject the light beam into the optical guide via an injection section. A polarizing material (1.9) is present between the optical guide and the injection device at the injection section. The injection device comprises a prism (1.4) and an assembly formed of a quarter-wave plate (1.6) and a curved mirror (1.7), the injection device being arranged in such a way that a beam light reflected by the polarizing material in the direction of the curved mirror passes through the quarter wave plate, is then reflected by the curved mirror towards the polarizing material and crosses the quarter wave plate.