Optical device, module and apparatus

The present application relates to an apparatus for controlling image brightness. The apparatus includes a first light guide component including at least a coupling-in diffractive component configured to couple one or more input light beams from a first light engine into the first light guide compon...

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Bibliographic Details
Main Authors JARVENPAA TONI, SALMIMAA MARJA
Format Patent
LanguageChinese
English
Published 15.08.2023
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:The present application relates to an apparatus for controlling image brightness. The apparatus includes a first light guide component including at least a coupling-in diffractive component configured to couple one or more input light beams from a first light engine into the first light guide component, an expansion component, and a coupling-out diffractive component, and a second light guide component configured to couple one or more input light beams from a second light engine into the second light guide component. The expansion component is configured to expand one or more input light beams; and the out-coupling diffraction component is configured to couple the expanded one or more light beams out of the first light guide component; a second light guide member including at least a coupling-in diffractive member configured to couple one or more input light beams from the second light engine into the second light guide member, an expansion member, and a coupling-out diffractive member; the expansion componen
Bibliography:Application Number: CN202180085342