Device and method for manufacturing holographic optical elements
AssigneeRobert Bosch GmbH
InventorsJohannes Hofmann, Reinhold Fiess
Life of this patent
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Abstract
A device and a method for manufacturing holographic optical elements. The device includes at least two partial light beams and one interference light beam, one deformable mirror in each case per partial light beam, a control unit, which is configured to actuate the deformable mirrors to adapt a wavefront of the partial light beam, and a holographic film. The deformable mirrors are situated so as to each reflect precisely one partial light beam and to direct the reflected partial light beam on the holographic film, and the interference light beam being directed on the holographic film to interfere with the reflected partial light beams so as to simultaneously generate at least two holographic optical elements.
Claims15
A device for manufacturing holographic optical elements, comprising:
- at least two partial light beams and one interference light beam;
- one deformable mirror per partial light beam of the at least two partial light beams;
- a control unit configured to actuate each of the deformable mirrors independently to adapt a wavefront of the partial light beams;
- and
- holographic film;
- wherein:
- the deformable mirrors are situated so as to each reflect precisely one partial light beam of the least two partial light beams and to direct the reflected partial light beam on the holographic film;
- and
- the interference light beam is directed on the holographic film to interfere with the reflected partial light beams to simultaneously generate at least two holographic optical elements.
A method for manufacturing holographic optical elements, comprising the following steps:
- generating at least two partial light beams and one light beam;
- reflecting each of the partial light beams on a respective deformable mirror, the reflected partial light beams being radiated simultaneously on a holographic film, the reflected partial light beams interfering in the holographic film with the one light beam to generate at least two holographic optical elements simultaneously;
- and
- deforming each of the deformable mirrors independently to adapt a wavefront of the respective partial light beam.
A method for handling holographic optical elements, which are manufactured by:
- generating at least two partial light beams and one light beam,
- reflecting each of the partial light beams on a respective deformable mirror, the reflected partial light beams being radiated simultaneously on a holographic film, the reflected partial light beams interfering in the holographic film with the one light beam to generate at least two holographic optical elements simultaneously, and
- deforming each of the deformable mirrors independently to adapt a wavefront of the respective partial light beam;
- generating a holographic position mark on the holographic film using an aperture, which is situated on a mirror side of the holographic film, including a marker opening;
- and
- cutting and/or positioning the holographic optical elements based on an optical recognition of the holographic position mark.
Dependencies are inferred from the claim text.