Lighting apparatus

摘要

The invention relates to a lighting apparatus comprising a laser (102) for emitting a first laser beam (103) and a diffractive reflective element (104). The first laser beam (103) is reflected by the diffractive reflective element (104) for generating a second laser beam (105) being the reflected first laser beam, wherein the diffractive reflective element (104) is adapted such that the effective surface area of the second laser beam (105) is larger than the effective surface area of the first laser beam (103). The second laser beam is supposed to be pointed directly or indirectly to the eyes of a person. Since the diffractive reflective element increases the effective surface area and is used in a reflective mode, i.e. the first laser beam will generally not directly meet the eye of the person, if the diffractive reflective element is damaged or displaced, the risk of eye damages can be reduced.

主权项

1. A lighting apparatus comprising a laser for emitting a first laser beam and a diffractive reflective element arranged for reflecting the first laser beam to produce a second laser beam, said diffractive reflective element being adapted to widen the second laser beam to an angle such that an effective surface area of the second laser beam is larger than an effective surface area of the first laser beam, where an angle corresponding to a full width at half a maximum intensity of the second laser beam is smaller than 60 degrees.