Virtual image display device
US10725294B2 · kind B2 · utility
0Cited by
1References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 3, 2019 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Jun 3, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2360/334
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A virtual image display device includes: a display unit that generates an image display light by modulating an illumination light; and a projection optical system that includes at least a concave mirror for reflecting the image display light toward a virtual image presentation plate. The display unit is provided at a position nearer a focal point within a meridional plane of a composite optical system formed by the virtual image presentation plate and the projection optical system than a focal point within a sagittal plane of the composite optical system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.