Waveguides
US-9465213-B2 · Oct 11, 2016 · US
Display apparatus
US2016357013A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016357013-A1 |
| Application number | US-201615242304-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 19, 2016 |
| Priority date | Mar 12, 2014 |
| 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 display apparatus includes a light guide that propagates image light while totally reflecting the image light, an optical system that introduces the image light into the light guide, a light beam extractor that emits the image light propagating in the light guide from an observer-side surface of the light guide along an extent of propagation of the image light, and a window member facing the observer-side surface of the light guide with a gap therebetween.
First claim
Opening claim text (preview).
1 . A display apparatus comprising: a light guide configured to propagate image light while totally reflecting the image light; an optical system configured to introduce the image light into the light guide; a light beam extractor configured to emit the image light propagating in the light guide from an observer-side surface of the light guide along an extent of propagation of the image light; and a window member facing the observer-side surface of the light guide with a gap therebetween. 2 . The display apparatus of claim 1 , wherein the gap is 700 nm or greater to 1 mm or less. 3 . The display apparatus of claim 1 , wherein the window member is formed by a parallel flat plate. 4 . The display apparatus of claim 1 , wherein the window member has a refractive power. 5 . The display apparatus of claim 1 , wherein the window member comprises an AR film. 6 . The display apparatus of claim 1 , wherein the window member comprises a fingerprint anti-adhesive film. 7 . The display apparatus of claim 1 , wherein the window member comprises a water repellent film. 8 . The display apparatus of claim 1 , further comprising: a plurality of spacers disposed between the light guide and the window member at a periphery of the light guide, wherein the light guide is pressed elastically to the spacers. 9 . The display apparatus of claim 8 , wherein the spacers are partially in point contact or line contact with the light guide. 10 . The display apparatus of claim 8 , wherein the spacers have a surface roughness Rv of 0.6 μm or greater at the light guide side of the spacers. 11 . The display apparatus of claim 8 , wherein the spacers are made of metal. 12 . The display apparatus of claim 8 , wherein the spacers are made of plastic.
Assignees
Inventors
Classifications
- G02B27/0081Primary
with means for altering, e.g. enlarging, the entrance or exit pupil · CPC title
Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films (G02B1/16 takes precedence) · CPC title
Combinations of two or more optical elements · CPC title
Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings · CPC title
Anti-reflection coatings · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2016357013A1 cover?
- A display apparatus includes a light guide that propagates image light while totally reflecting the image light, an optical system that introduces the image light into the light guide, a light beam extractor that emits the image light propagating in the light guide from an observer-side surface of the light guide along an extent of propagation of the image light, and a window member facing the …
- Who is the assignee on this patent?
- Olympus Corp
- What technology area does this patent fall under?
- Primary CPC classification G02B27/0081. 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).