OBSERVATION APPARATUS
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United States of America Patent
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Issued Date -
Nov 23, 2023
app pub date -
May 12, 2023
filing date -
May 19, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
An observation apparatus is configured to enable an observer to observe an image displayed on an image display surface. The observation apparatus includes an observation optical system that includes a half-transmissive reflective surface, and a reflective polarizer configured to transmit linearly polarized light in a first direction and to reflect linearly polarized light in a second direction orthogonal to the first direction, and an imaging optical system configured to guide light that has transmitted through the reflective polarizer to an image pickup apparatus configured to image an observation side. A transmittance at a wavelength of 850 nm of linearly polarized light in the second direction of the reflective polarizer is 30% or higher.
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