Optical system and camera module comprising same
US-2024377616-A1 · Nov 14, 2024 · US
Optical system and image pickup apparatus
US8976271B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8976271-B2 |
| Application number | US-201313941991-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 15, 2013 |
| Priority date | Jul 19, 2012 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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The optical system capable of performing zooming includes a first lens unit and a second lens unit and satisfies conditions of |(ΔTMyu+ΔTMyl)/(ΔWMyu+ΔWMyl)|<0.67 and 0.75<|(ΔWMyu+ΔWMyl)|/2P<16.0. ΔWMyu represents a lateral aberration amount for a d-line of a 70 percent upper ray reaching an 80 percent image height at a wide-angle side middle focal length, ΔWMyl represents a lateral aberration amount for the d-line of a 70 percent lower ray reaching the 80 percent image height at the wide-angle side middle focal length, ΔTMyu represents a lateral aberration amount for the d-line of the 70 percent upper ray reaching the 80 percent image height at a telephoto side middle focal length, ΔTMyl represents a lateral aberration amount for the d-line of the 70 percent lower ray reaching the 80 percent image height at the telephoto side middle focal length, and P represents a pixel pitch of the image sensor.
First claim
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What is claimed is: 1. An optical system capable of performing variation of magnification, the optical system comprising in order from an object side to an image side: a first lens unit; and a second lens unit, at least one of the first and second lens units being moved during the variation of magnification, wherein the optical system forms an optical image on an image sensor provided in an image pickup apparatus, and wherein the optical system satisfies the following condit…
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Electricity · mapped topic
Physics · mapped topic
Electricity · mapped topic
- G02B15/14Primary
Physics · mapped topic
Physics · mapped topic
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- What does patent US8976271B2 cover?
- The optical system capable of performing zooming includes a first lens unit and a second lens unit and satisfies conditions of |(ΔTMyu+ΔTMyl)/(ΔWMyu+ΔWMyl)|<0.67 and 0.75<|(ΔWMyu+ΔWMyl)|/2P<16.0. ΔWMyu represents a lateral aberration amount for a d-line of a 70 percent upper ray reaching an 80 percent image height at a wide-angle side middle focal length, ΔWMyl represents a lateral aberration a…
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification G02B15/14. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 10 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).