Patent classifications
G
PHYSICS
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G03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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G03H
HOLOGRAPHIC PROCESSES OR APPARATUS
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1/00
Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
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G03H1/04
Processes or apparatus for producing holograms
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G03H1/20
Copying holograms by holographic; , i.e. optical; means
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G03H1/20

CONFIGURATION OF A REPLICATION PROCESS OF A MASTER HOLOGRAPHIC OPTICAL ELEMENT FOR VARIABLE INTENSITY OR POLARISATION
20260079446 · 2026-03-19 · ·

The invention relates to techniques for producing a holographic optical element (HOE) by replication of a master HOE. In particular, the invention relates to techniques for flexibly adjusting the diffraction efficiency of the HOE. An adjustable optical element (54) can be used to modify the intensity and/or the polarisation of light during the exposure process.

CONTROL OF A REPLICATION PROCESS OF A MASTER HOLOGRAPHIC OPTICAL ELEMENT FOR VARIABLE INTENSITY OR POLARISATION
20260118822 · 2026-04-30 · ·

The invention relates to techniques for producing a holographic optical element, HOE, by replication of a master HOE. More particularly, the invention relates to techniques for flexibly adjusting the diffraction efficiency of the HOE. An adjustable settable optical element (54) can be used to change the intensity and/or polarisation of light during an illumination process.