Transmissive optical element based on reflective volumetric gratings

A transmissive optical element includes first and second reflective volumetric gratings that redirect an impinging light beam in a first wavelength range from the first grating to the second grating by reflective diffraction, and from the second grating out of the transmissive optical element, also...

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Bibliographic Details
Main Authors TROCHTCHANOVITCH, PAVEL, YUN, ZHISHENG, SULAI, YUSUFU NJONI BAMAXAM
Format Patent
LanguageChinese
English
Published 01.08.2023
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:A transmissive optical element includes first and second reflective volumetric gratings that redirect an impinging light beam in a first wavelength range from the first grating to the second grating by reflective diffraction, and from the second grating out of the transmissive optical element, also by reflective diffraction. Such a configuration enables the transmissive optical element to transmit a light cone in a second, different wavelength range substantially without redirecting the light cone, while redirecting the impinging light beam at the same time. The transmissive optical element may be used in a visual display e.g. to separate paths of image light in visible part of light spectrum and some service light in a different part of the light spectrum.
Bibliography:Application Number: TW202211145941