Reflector for vehicles
A reflector for vehicles includes a reflective surface that contains an optical element to reflect light incident on the optical element according to specific reflection characteristics. The reflective surface is designed as a hologram element which has a grating structure in such a way that light incident on the hologram element is reflected according to the specific reflection characteristics.
1. A reflector for a vehicle, the reflector comprising:
a reflective surface that contains an optical element to reflect light incident on the optical element according to reflection characteristics, the reflective surface being configured as a hologram element that has a hologram structure such that when the optical element is illuminated, light is reflected according to the reflection characteristics,
wherein the hologram element is formed as a film, which is attached at edges to a holder frame, the holder frame being disposed in an interior of a lamp housing, the hologram element being a volume hologram element in which a grating constant g is smaller than a thickness of the film,
wherein a lamp unit is disposed in the lamp housing for producing a light function,
wherein the holder frame forms a substrate for a first side of the hologram element,
wherein a second side of the hologram element, that opposes the first side, is exposed to an interior of the lamp housing and faces the lamp unit, such that the hologram element is a first element inside of the lamp housing that is passed through by a light bundle emitted by the lamp unit, and
wherein the light bundle emitted by the lamp unit passes through the hologram element before passing through the holder frame.
2. The reflector according to claim 1 , wherein the hologram element is the volume hologram element via which the light is diffracted in a defined angle range and a spectral range of the light so that the reflection characteristics with respect to a reflection distribution and reflection intensity for a reflection function on the vehicle are fulfilled.
3. The reflector according to claim 1 , wherein the hologram element contains such light information that only spectral light fractions predetermined for a reflection function are reflected.
4. The reflector according to claim 1 , wherein the hologram element is introduced into a film according to a pattern, so that upon illumination of the film only the pattern lights up.
5. The reflector according to claim 1 , wherein the holder frame is spaced apart from a cover plate that seals the lamp housing.