Zoom lens and imaging apparatus
US-9217850-B2 · Dec 22, 2015 · US
Zoom lens and imaging apparatus
US9170409B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9170409-B2 |
| Application number | US-201414175333-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 7, 2014 |
| Priority date | Aug 29, 2011 |
| Publication date | Oct 27, 2015 |
| Grant date | Oct 27, 2015 |
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- Title
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Abstract
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A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. Magnification is changed by moving the first lens group and the second lens group. The first lens group includes a first lens having a negative refractive power, a second lens, a third lens having a negative refractive power, and a fourth lens having a positive refractive power, provided in this order from the object side. The zoom lens satisfies predetermined conditional formulae.
First claim
Opening claim text (preview).
What is claimed is: 1. A zoom lens, comprising: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side; the first lens group and the second lens group being moved to change magnification; the first lens group comprising a first lens having a negative refractive power, a second lens, a third lens having a negative refractive power, and a fourth lens having a positive refract…
Assignees
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Classifications
- G02B15/177Primary
Physics · mapped topic
- G02B15/161Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G02B15/1425Primary
Physics · mapped topic
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- What does patent US9170409B2 cover?
- A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. Magnification is changed by moving the first lens group and the second lens group. The first lens group includes a first lens having a negative refractive power, a second lens, a third lens having a negative refracti…
- Who is the assignee on this patent?
- Fujifilm Corp
- What technology area does this patent fall under?
- Primary CPC classification G02B15/177. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Oct 27 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).