Optical Design Techniques for Environmentally Resilient Optical Computing Devices
US-2015356204-A1 · Dec 10, 2015 · US
Objective optics with interference filter
US8928797B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8928797-B2 |
| Application number | US-201414231761-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 1, 2014 |
| Priority date | Jan 18, 2011 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
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.
Optical apparatus includes an image sensor and an optical assembly, which is configured to focus optical radiation via an aperture stop onto the image sensor. The optical assembly includes a plurality of optical surfaces, consisting of a first, curved surface through which the optical radiation enters the assembly, a final surface through which the rays exit the assembly toward the image sensor, and at least two intermediate surfaces between the first and final surfaces. An interference filter, which has a center wavelength and a passband no greater than 4% of the center wavelength, and includes a coating formed on one of the optical surfaces. All rays of the optical radiation passing through the aperture stop are incident on the coating over a range of incidence angles with a half-width that is no greater than three fourths of the numerical aperture of the optical assembly.
First claim
Opening claim text (preview).
The invention claimed is: 1. Optical apparatus, comprising: an image sensor; and an optical assembly, which is configured to focus optical radiation via an aperture stop onto the image sensor, and which comprises: a plurality of optical surfaces, including a concave surface having a center of curvature facing toward the aperture stop; and an interference filter comprising a coating formed on the concave surface, wherein the center of curvature of the concave surface is suff…
Assignees
Inventors
Classifications
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 US8928797B2 cover?
- Optical apparatus includes an image sensor and an optical assembly, which is configured to focus optical radiation via an aperture stop onto the image sensor. The optical assembly includes a plurality of optical surfaces, consisting of a first, curved surface through which the optical radiation enters the assembly, a final surface through which the rays exit the assembly toward the image sensor…
- Who is the assignee on this patent?
- Primesense Ltd, Apple Inc
- What technology area does this patent fall under?
- Primary CPC classification G02B5/285. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 06 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).