Holographic head-up display device
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United States of America Patent
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Aug 29, 2023
Grant Date -
Nov 19, 2020
app pub date -
Aug 5, 2020
filing date -
Jul 5, 2017
priority date (Note) -
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Abstract
A holographic head-up display device includes: a light source portion that emits coherent light; an optical modulation portion that modulates the coherent light; a relay optical system that focuses the modulated light; a filter mirror that includes a reflection area disposed at a focal position of the relay optical system and reflecting light incident through the relay optical system and an absorption area disposed at the periphery of the reflection area and absorbing light incident through the relay optical system; and a transflective mirror that partially transmits and partially reflects light reflected by the filter mirror.
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