LENS UNIT, OPTICAL DEVICE INCLUDING LENS UNIT, AND IMAGE PICKUP APPARATUS INCLUDING LENS UNIT
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United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Sep 11, 2024
filing date -
Sep 11, 2024
priority date (Note) -
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Abstract
Provided is a lens unit capable of reducing a risk that desired optical performance cannot be obtained even when a temperature range of a use environment is wide. In a lens unit including a first lens and a second lens, a diameter D1 of an outer peripheral edge of a first lens first tapered portion is set larger than a diameter D2 of an outer peripheral edge of a second lens tapered portion, and the outer peripheral edge of the first lens tapered portion and the outer peripheral edge of the second lens tapered portion are spaced apart by a predetermined distance at a predetermined temperature. In an environment at a temperature higher or lower than the predetermined temperature, the distance between the outer peripheral edge of the first lens tapered portion and the outer peripheral edge of the second lens tapered portion is set smaller than the predetermined distance.
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