Patents
US 12754432 B2: Display device having diffraction gratings with reduced polarization sensitivity
- Granted
- 2026-10-06
- Filed
- 2025-06-28 application 19253782
- Type
- Utility · 18 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Blazed diffraction gratings provide optical elements in head-mounted display systems to, e.g., incouple light into or out-couple light out of a waveguide. These blazed diffraction gratings may be configured to have reduced polarization sensitivity. Such gratings may, for example, incouple or outcouple light of different polarizations with similar level of efficiency. The blazed diffraction gratings and waveguides may be formed in or on a high refractive index substrate such as lithium niobate. In some implementations, the blazed diffraction gratings may include diffractive features having a feature height or feature depth of 40 nm to 120 nm, for example, 80 nm. In some examples, the diffractive features may be etched into the high index substrate, e.g., lithium niobate.
Source: PTBLXML, file of 2026-10-06 (ipgb20261006.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Magic Leap, Inc. 2,122 patents | US company or organization | Plantation, FL | MAGIC LEAP, INC. Federal lobbying client EXACT high confidence: identical full name and state | PTBLXML, file of 2026-10-06 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Kang Luo | Austin, TX | 68 | PTBLXML, file of 2026-10-06 | |
| Vikramjit Singh | Pflugerville, TX | 103 | PTBLXML, file of 2026-10-06 | |
| Nai-Wen Pi | Plano, TX | 19 | PTBLXML, file of 2026-10-06 | |
| Shuqiang Yang | Austin, TX | 54 | PTBLXML, file of 2026-10-06 | |
| Frank Y. Xu | Austin, TX | 113 | PTBLXML, file of 2026-10-06 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G02B | Optical elements, systems or apparatus | G02B27/0172 | PTBLXML, file of 2026-10-06 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.