Zoom lens and imaging apparatus
US-9217850-B2 · Dec 22, 2015 · US
Zoom lens and image pickup apparatus including the same
US2016356997A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016356997-A1 |
| Application number | US-201615170432-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 1, 2016 |
| Priority date | Jun 5, 2015 |
| Publication date | Dec 8, 2016 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A zoom lens includes: a first lens unit having a negative refractive power; and a rear group having a positive refractive power, in which, when a focal length of the zoom lens is a shortest focal length, a maximum image height is lower than a half of a diagonal length of an image pickup region, and when a focal length of the zoom lens at which the maximum image height becomes a half of the diagonal length of the image pickup region is defined as an intermediate focal length, a focal length of the zoom lens at a longest focal length, a half angle of field of the zoom lens at the longest focal length, and other such factors are appropriately set so that the maximum image height is increased continuously from the shortest focal length to the intermediate focal length.
First claim
Opening claim text (preview).
What is claimed is: 1 . A zoom lens, which is configured to form a subject image on an image pickup element, comprising, in order from an object side to an image side: a first lens unit having a negative refractive power; and a rear group including a plurality of lens units, wherein the rear group comprises a lens unit having a positive refractive power, wherein an interval between each pair of adjacent lens units is changed during zooming from a shortest focal length to a…
Assignees
Inventors
Classifications
Electricity · mapped topic
Physics · mapped topic
- G02B15/177Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2016356997A1 cover?
- A zoom lens includes: a first lens unit having a negative refractive power; and a rear group having a positive refractive power, in which, when a focal length of the zoom lens is a shortest focal length, a maximum image height is lower than a half of a diagonal length of an image pickup region, and when a focal length of the zoom lens at which the maximum image height becomes a half of the diag…
- Who is the assignee on this patent?
- Canon Kk
- 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 Thu Dec 08 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).