OPTICAL SYSTEM
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United States of America Patent
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Issued Date -
May 23, 2024
app pub date -
Oct 31, 2023
filing date -
Nov 21, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
An optical system includes, in order from a pupil surface side to a display surface side, a first reflective polarizing plate, a first lens having a positive refractive power, a half mirror, a second lens having a positive refractive power, and a second reflective polarizing plate. The optical system further includes a first quarter wave plate arranged between a pupil surface and the half mirror, and a second quarter wave plate arranged between the half mirror and a display surface. The second lens has a paraxially convex surface on the pupil surface side. Further, in the case where a paraxial curvature radius of a surface of the first lens on the pupil surface side is r1 and a paraxial curvature radius of a surface of the first lens on the display surface side is r2, the optical system satisfies a conditional expression below: (1) −3.2
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