Virtual and augmented reality systems and methods
US-2015178939-A1 · Jun 25, 2015 · US
Optics of wearable display using laser beam scanner
US11073694B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11073694-B2 |
| Application number | US-201715843330-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 15, 2017 |
| Priority date | Jun 27, 2014 |
| Publication date | Jul 27, 2021 |
| Grant date | Jul 27, 2021 |
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- Title
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Abstract
Official abstract text for this publication.
A see-through image display system having a laser-beam-scanner has a very small eyebox when a laser beam is directly projected into eye. This invention provides a solution to increase the size of eyebox using a free-form-mirror to create a real image with high NA without exit-pupil-expander.
First claim
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We claim: 1. A see-through display system comprising: a light emitting device for emitting collimated beams representing a collimated laser beam image to a laser beam scanner for scanning the collimated laser beam to a convex free form mirror to expand the collimated laser beam image to an expanded a real image to project the expanded real image to a light transmissive combiner; and the light transmissive combiner is disposed in front of a human pupil on the see through device for reflecting the expanded real image projected thereon as a reflected virtual image to combine with an external scene for viewing by the human pupil without requiring an exit pupil expander (EPE). 2. The see-through display system of claim 1 wherein: the light emitting device further comprises laser emitting diodes (LED) for emitting the collimated laser beams to the laser beam scanner. 3. The see-through display system of claim 1 further comprising: a set of relay lenses between said combiner and said convex free form mirror to improve a resolution of the virtual image. 4. The see-through display system of claim 1 further comprising: an eyeglass for embodying and supporting the display device thereon. 5. The see-through display system of claim 1 further comprising: a head-up display device for embodying and supporting the display device thereon.
Assignees
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Classifications
the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD (G02B26/0825 takes precedence; micromechanical devices in general B81B) · CPC title
Eyeglass type (eyeglass details G02C) · CPC title
- G02B27/0172Primary
characterised by optical features · CPC title
comprising devices increasing the field of view · CPC title
holographic · CPC title
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Frequently asked questions
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- What does patent US11073694B2 cover?
- A see-through image display system having a laser-beam-scanner has a very small eyebox when a laser beam is directly projected into eye. This invention provides a solution to increase the size of eyebox using a free-form-mirror to create a real image with high NA without exit-pupil-expander.
- Who is the assignee on this patent?
- Ishii Fusao, Ntt Docomo Inc
- What technology area does this patent fall under?
- Primary CPC classification G02B27/0172. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jul 27 2021 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).