Method and apparatus for head worn display with multiple exit pupils
US-2017293147-A1 · Oct 12, 2017 · US
Optics of wearable display to increase eye-box
US11061224B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11061224-B2 |
| Application number | US-201715842774-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 14, 2017 |
| Priority date | Dec 15, 2016 |
| Publication date | Jul 13, 2021 |
| Grant date | Jul 13, 2021 |
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- Title
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- Abstract
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Abstract
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A see-through image display system having an Exit-Pupil-Expander (EPE) to enlarge the eyebox of display is disclosed. The EPE uses a hologram functioning as a micro-lens-array as well as collimation lens.
First claim
Opening claim text (preview).
We claim: 1. A see-through display system comprising: a light source for emitting a multi-color light beam toward a laser beam scanner (LSB), wherein the LSB scans the multi-color light beam as a plurality of scanned beams toward a diverging hologram plate; the diverging hologram plate diverges the scanned beams into divergent beams with a predesignated divergent angle for projecting toward a combiner plate, the combiner plate reflecting the divergent beams to create a virtual image and combining with an external image to create a combined image in front of an eye-pupil with a predefined size of an eye-box corresponding to the divergent angle of the diverging beams; wherein the divergent hologram plate further comprises a light shield with many holes with a size of several microns to diverge the scanned beams by Fraunhofer diffraction. 2. The see-through display system of claim 1 , wherein: the combiner plate comprises another hologram plate having hologram elements creating the virtual image and combining with the external image to create the combined image in front of the eye-pupil. 3. The see-through display system of claim 1 , wherein: the combiner plate further comprises a Fresnel mirror for creating the virtual image and combining with the external image to create the combined image in front of the eye-pupil. 4. The display system of claim 1 , wherein: the combiner plate further comprises a diffractive optical element (DOE) for creating the virtual image and combining with the external image to create the combined image in front of the eye-pupil. 5. The display system of claim 1 , wherein: the light source further includes a laser light source selected from a group consisting of a laser, light emitting diode (LED) and organic light emitting diode (OLED).
Assignees
Inventors
Classifications
holographic · CPC title
Collimators · CPC title
- G02B27/0172Primary
characterised by optical features · CPC title
Eyeglass type (eyeglass details G02C) · CPC title
Field-of-view increase by wavefront division · CPC title
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Frequently asked questions
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- What does patent US11061224B2 cover?
- A see-through image display system having an Exit-Pupil-Expander (EPE) to enlarge the eyebox of display is disclosed. The EPE uses a hologram functioning as a micro-lens-array as well as collimation lens.
- Who is the assignee on this patent?
- Ishii Fusao, Nakanishi Mikiko, Takahashi Kazuhiko, and 3 more
- 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 13 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).