Projector
US11681208B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2019 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Apr 9, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/145
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a projector comprising: a housing; a projection part for projecting an image; a projection lens module for expanding and projecting, on an outside screen, the image projected from the projection part; and a position adjustment part for controlling the positions of a first direction and a second direction of the projection lens module. The position adjustment part comprises: a first fixed bracket fixed to the housing and comprising an opening part through which a projection lens passes; a first moving bracket positioned on one surface of the fixed bracket and enclosing the circumference of the projection lens; a second moving bracket positioned on one surface of the first moving bracket and enclosing the circumference of the projection lens; a screw coupled to the first moving bracket in the first direction; a first dial exposed to the outer side by being coupled to the end part of the screw; a second dial positioned in a ring-shape on the circumference of the first dial; and a gear module for moving the second moving bracket in the second direction when the second dial rotates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.