Optical system and camera module comprising same
US-2024377616-A1 · Nov 14, 2024 · US
Zoom lens and image pickup apparatus using the same
US8976459B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8976459-B2 |
| Application number | US-201213727847-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 27, 2012 |
| Priority date | Dec 28, 2011 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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A zoom lens comprises in order from an object side, a first lens unit having a positive refractive power, and at the time of zooming from a wide angle end to a telephoto end, the first lens unit moves, and the zoom lens satisfies the following conditional expression (1). FNO ( W )<1.64 (1) where, FNO(W) denotes an F-number of the zoom lens at the wide angle end.
First claim
Opening claim text (preview).
What is claimed is: 1. A zoom lens comprising in order from an object side: a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; a third lens unit having a positive refractive power; and a rear lens group, including one or more additional lens unit(s); wherein at the time of zooming from a wide angle end to a telephoto end, the first lens unit moves, and the zoom lens satisfies the following conditional expression…
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- G02B15/14Primary
Physics · mapped topic
Electricity · mapped topic
Physics · mapped topic
Physics · mapped topic
- G02B15/144113Primary
Physics · mapped topic
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- What does patent US8976459B2 cover?
- A zoom lens comprises in order from an object side, a first lens unit having a positive refractive power, and at the time of zooming from a wide angle end to a telephoto end, the first lens unit moves, and the zoom lens satisfies the following conditional expression (1). FNO ( W )<1.64 (1) where, FNO(W) denotes an F-number of the zoom lens at the wide angle end.
- Who is the assignee on this patent?
- Olympus Imaging Corp
- 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).