VARIABLE FOCAL LENGTH LENS DEVICE
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United States of America
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Issued Date -
Jan 30, 2025
app pub date -
Oct 17, 2024
filing date -
Oct 17, 2024
priority date (Note) -
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Abstract
A variable focus lens device includes: a first variable focus lens; a second variable focus lens disposed behind the first variable focus lens; a third variable focus lens disposed behind the second variable focus lens; a fixed focus lens disposed behind the third variable focus lens; a first conjugate point that is disposed at a first focus before the first variable focus lens; a second conjugate point that is disposed at a fourth focus behind the fixed focus lens; and a third conjugate point that is disposed at a second focus behind the second variable focus lens, and at a third focus before the third variable focus lens, a first partial optical system is an infinite conjugate system in relation to the first conjugate point, and a second partial optical system is an infinite conjugate system in relation to the third conjugate point.
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