Scanned Laser Vein Contrast Enhancer with Image Averaging
US-2024335165-A1 · Oct 10, 2024 · US
Waveguides
US8965152B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8965152-B2 |
| Application number | US-200913133278-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 9, 2009 |
| Priority date | Dec 12, 2008 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 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.
A projection display 210 arranged to display an image to an observer 212 use waveguide techniques to generate a display defining a large exit pupil at the point of the observer 212 and a large field of view, while using a small image-providing light source device. The projection display 210 uses two parallel waveguides 214, 216 made from a light transmissive material. One waveguide 214 stretches the horizontal pupil of the final display and the other waveguide 216 stretches the vertical pupil of the final display and acts as a combiner through which the observer 212 views an outside world scene 220 and the image overlaid on the scene 220 . In a color display, each primary color is transmitted within a separate channel R, G, B.
First claim
Opening claim text (preview).
The invention claimed is: 1. A waveguide apparatus, comprising: a substrate of light transmissive material; at least one layer arranged within the substrate of material, the layer being arranged to define separate channels within the substrate of material, each channel configured to transmit light of different predefined wavelengths under total internal reflection; and a grating associated with each channel, wherein each grating is arranged to diffract a portion of light incid…
Assignees
Inventors
Classifications
Physics · mapped topic
Physics · mapped topic
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 US8965152B2 cover?
- A projection display 210 arranged to display an image to an observer 212 use waveguide techniques to generate a display defining a large exit pupil at the point of the observer 212 and a large field of view, while using a small image-providing light source device. The projection display 210 uses two parallel waveguides 214, 216 made from a light transmissive material. One waveguide 2…
- Who is the assignee on this patent?
- Simmonds Michael David, Bae Systems Plc
- What technology area does this patent fall under?
- Primary CPC classification G02B27/1006. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 24 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).