Projection apparatus having polarizing plate which absorbes and reflects output light, and vehicle
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United States of America Patent
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Feb 27, 2018
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N/A
app pub date -
May 19, 2015
filing date -
Jun 6, 2014
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Abstract
The present invention provides a projection apparatus capable of clearly displaying a projected image, and allowing the sight behind the projected image to be viewed to a sufficient degree. A projection apparatus (1) of the present invention includes a light irradiation device (3) configured to emit an output light (2) having one polarized light component, and a polarizing plate (4) including a polarizer (41) irradiated with the output light (2), wherein in the polarizing plate (4), an absorption axis is arranged to absorb and reflect the output light (2) by the polarizing plate, reflectance of the polarizing plate (4) for the output light (2) is 10% or more, and single transmittance of the polarizing plate (4) is in the range of 30% to 90%.
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