Optical instrument

Provided is an optical instrument capable of obtaining desired polarization characteristics. This optical instrument is provided with a light source, an incidence-side polarization element, a light modulation element, an emission-side first polarization element, and an emission-side second polarizat...

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Bibliographic Details
Main Authors TAKEDA TOMU, SAGAWA HIDETO
Format Patent
LanguageChinese
English
Published 17.11.2023
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:Provided is an optical instrument capable of obtaining desired polarization characteristics. This optical instrument is provided with a light source, an incidence-side polarization element, a light modulation element, an emission-side first polarization element, and an emission-side second polarization element, and is characterized in that: the emission-side first polarization element has a wire grid structure; a plurality of protrusions are arranged on one surface of the transparent substrate so as to be spaced apart from each other at a pitch shorter than the wavelength of the light in the wavelength band used by the light source, and the rotation angle of the transmission axis of the emission-side first polarization element with respect to the transmission axis of the incidence-side polarization element is within +/-8.5 DEG. The emission-side second polarization element has a wire grid structure, and the rotation angle of the transmission axis of the emission-side first polarization element with respect to
Bibliography:Application Number: CN202280020303