Patents were found for a Canon 24mm f/0.7 and a Canon 12mm f/1.0.
overview
- [Publication number] P2025040484
- [Release date] 2025-03-25
- [Title of the Invention] Imaging optical system and imaging device having the same
- [Application date] 2023-09-12
- [Applicant]
[Identification number] 000001007
[Name or company name] Canon Inc. - [Background Art]
[0002]
In recent years, the demand for miniaturized imaging optical systems is increasing due to the spread of smartphone cameras and the shift from single-lens reflex cameras to mirrorless cameras in the high-end camera market. In addition, in the market for drones and car-mounted cameras, the demand for wide-angle imaging lenses to capture a wider field of view is increasing in addition to the miniaturization of cameras. Patent Document 1 discloses a compact imaging optical system using two reflective and transmissive surfaces. - [0004]
However, the imaging optical system of Patent Document 1 is not sufficient in terms of widening the angle, and it cannot be said that good optical performance is necessarily ensured. - An object of the present
invention is to provide a compact imaging optical system with a wide angle and a bright F-number.
Example 1
- Focal length: 24.00
- F-number: 0.70
- Half angle of view: 42.04
- Total length: 85.00
- Back focus: 5.00
Example 2
- Focal length: 12.06
- F-number: 1.00
- Half angle of view: 50.23
- Total length: 76.50
- Back Focus: 11.50
Example 3
- Focal length: 11.00
- F-number: 2.03
- Half angle of view: 63.04
- Total length: 100.00
- Back Focus: 13.60
Example 4
- Focal length: 6.21
- F-number: 2.00
- Half angle of view: 105.0
- Total length: 58.60
- Back Focus: 13.60
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