Patent classifications
G03H2222/18
Method for producing a beam shaping holographic optical element
The present disclosure relates to a method for producing a beam shaping holographic optical element, which is configured to generate diffracted beams configured to reconstruct an image of a diffusor irrespectively of the point of impact of a pencil of light on the beam shaping holographic optical element, comprising providing a recording element, providing a master element comprising a particular pattern, forming a recording stack comprising the recording element and the master element such that the master element is arranged to the recording element in a closed-copy distance, irradiating at least a part of the recording stack with a reconstruction beam, irradiating at least a part of the recording stack with a reference beam, wherein at least one of the reconstruction beam or reference beam penetrates the master element to record the pattern of the master element onto the recording element.
DEVICE FOR COMBINING BEAMS AND SYSTEM HAVING A DEVICE FOR COMBINING BEAMS AND A WHITE IMAGE HOLOGRAM
A device for combining light beams with a holographic element is provided. Moreover, systems are provided in which a device for combining beams is used to illuminate a white image hologram.