Image projection apparatus and storage medium capable of adjusting curvature amount of image plane
US10983424B2 · kind B2 · utility
3Cited by
25References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 10, 2019 |
| Grant date | Apr 20, 2021 |
| Priority date | — |
| Expiry date | Apr 10, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3152
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image projection apparatus configured to project a projection image on a projected surface via a projection optical system that includes a first optical system capable of adjusting a curvature amount of an image plane and is interchangeably attached to the image projection apparatus includes an acquirer configured to acquire information on a reference position of the first optical system, and a controller configured to move the first optical system to the reference position when detecting an interchange of the projection optical system or when accepting an instruction from a user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.