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US 2024/0393573 A1Published application
Imaging apparatus
AssigneeFUJIFILM Corporation
InventorsKota SHIMAZAKI, Motoari OTA, Takuya TANAKA
Life of this patent
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Abstract
An imaging apparatus includes an imaging optical system including a plurality of lenses, and a curved imaging surface that is disposed at an image forming position of the imaging optical system and that has a concave surface toward an object side. The imaging apparatus satisfies predetermined conditional expressions.
Claims18
An imaging apparatus comprising:
- an imaging optical system including a plurality of lenses;
- and
- a curved imaging surface that is disposed at an image forming position of the imaging optical system and that has a concave surface toward an object side,
- wherein in a case where a back focus of the imaging optical system as an air conversion distance is denoted by Bf, a curvature radius of the imaging surface is denoted by Ri, a paraxial curvature radius of a lens surface of the imaging optical system closest to an image side is denoted by Rr, an effective diameter of a lens surface of the imaging optical system closest to the object side is denoted by EDf, and a sum of Bf and a distance on an optical axis from the lens surface of the imaging optical system closest to the object side to the lens surface of the imaging optical system closest to the image side is denoted by TL, Conditional Expressions (1), (2), and (3) are satisfied, which are represented by
- -
- 0.3
- <
- Bf
- /
- Ri
- <
- -
- 0.005
- (
- 1
- )
- -
- 5
- <
- (
- Rr
- +
- Ri
- )
- /
- (
- Rr
- -
- Ri
- )
- <
- -
- 0.1
- (
- 2
- )
- 0.1
- <
- EDf
- /
- TL
- <
- 0.8
- .
- (
- 3
- )
44 more elements
Dependencies are inferred from the claim text.