Zoom dual-aperture camera with folded lens
US-2024280792-A1 · Aug 22, 2024 · US
Zoom lens and image pickup apparatus
US9069155B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9069155-B2 |
| Application number | US-201313858430-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 8, 2013 |
| Priority date | Oct 8, 2010 |
| Publication date | Jun 30, 2015 |
| Grant date | Jun 30, 2015 |
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- Title
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Abstract
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Disposing from an object side in the order of a positive first lens group which is fixed at the time of zooming, a negative second lens group which is moved at the time of zooming, an aperture stop, a positive third lens group which is fixed at the time of zooming, and a fourth lens group which is moved along the optical axis at the time of zooming to correct a change in image plane position arising from the zooming for focusing. The zoom lens is configured to simultaneously satisfy, when a focal length of the overall lens system at the telephoto end, an overall optical length, and an Abbe number of the second group first lens with respect to d-line are taken as ft, TL, and νd 21 respectively, conditional expressions (1): 0.62<TL/ft<0.88 and (2): 30<νd 21 <48.
First claim
Opening claim text (preview).
What is claimed is: 1. A zoom lens, consisting of a first lens group which has a positive power and is fixed at the time of zooming, a second lens group which has a negative power and is moved along an optical axis at the time of zooming, an aperture stop, a third lens group which has a positive power and is fixed at the time of zooming, and a fourth lens group which is moved along the optical axis at the time of zooming to correct a change in image plane position arising from the…
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Classifications
Physics · mapped topic
Physics · mapped topic
- G02B13/009Primary
Physics · mapped topic
- G02B15/1441Primary
Physics · mapped topic
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- What does patent US9069155B2 cover?
- Disposing from an object side in the order of a positive first lens group which is fixed at the time of zooming, a negative second lens group which is moved at the time of zooming, an aperture stop, a positive third lens group which is fixed at the time of zooming, and a fourth lens group which is moved along the optical axis at the time of zooming to correct a change in image plane position ar…
- Who is the assignee on this patent?
- Fujifilm Corp
- What technology area does this patent fall under?
- Primary CPC classification G02B13/009. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jun 30 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).