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US 2024/0176103 A1Published application
Attachment optical system, optical system, image pickup apparatus, and image pickup system
AssigneeCanon Kabushiki Kaisha
InventorYoshiyuki TAKI
Life of this patent
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Abstract
An attachment optical system includes a first optical system consisting of a dome-shaped cover attachable to an object side of an imaging optical system, and a second optical system attachable to an image side of the imaging optical system. A predetermined inequality is satisfied.
Claims15
An attachment optical system comprising:
- a first optical system consisting of a dome-shaped cover attachable to an object side of an imaging optical system;
- and
- a second optical system attachable to an image side of the imaging optical system,
- wherein the following inequality is satisfied:
- 0.00<|fd/fc|<0.11
- where fd is a focal length of the first optical system, and fc is a focal length of the second optical system.
3 more elements
Dependencies are inferred from the claim text.