OPTICAL DEVICE AND IMAGE PICKUP APPARATUS
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United States of America Patent
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Issued Date -
May 4, 2023
app pub date -
Oct 20, 2022
filing date -
Oct 28, 2021
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Abstract
An optical device includes a first lens group corresponding to a first optical axis, and a second lens group corresponding to a second optical axis and configured to change a focal length range of an optical system from a first focal length range to a second focal length range by being disposed on the first optical axis on a side of the first lens group adjacent to an image plane. The first lens group moves toward the image plane in a first direction parallel to the first optical axis. The second lens group moves in a second direction to allow at least part of the second lens group to overlap at least part of the first lens group in the first direction, and the second optical axis withdraws from the first optical axis.
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