Head-mounted display device and zoomable optical device thereof
US12174375B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 5, 2023 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Sep 5, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/29
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A head-mounted display device and a zoomable optical device thereof is disclosed. The zoomable optical device includes a polarization reflection film, a waveplate, a half-mirror film, and a zoomable module. The zoomable module includes a first conductive light-transmitting substrate, a second conductive light-transmitting substrate, and a third conductive light-transmitting substrate. The third conductive light-transmitting substrate is arranged between the first conductive light-transmitting substrate and the second conductive light-transmitting substrate. The first conductive light-transmitting substrate is adhered to the waveplate with an optical-grade transparent adhesive. The polarization reflection film is directly arranged on the second conductive light-transmitting substrate. There is no substrate between the first conductive light-transmitting substrate and the third conductive light-transmitting substrate, and there is no substrate between the second conductive light-transmitting substrate and the third conductive light-transmitting substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.