Light-curing type 3D printing device and image exposure system thereof
US10156793B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 2014 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Jan 25, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/70416
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image exposure system of a 3D printing device having a spatial light modulator, a light source, a projection lens, a micro-displacement driving mechanism and a controller. The spatial light modulator is provided with a plurality of micromirrors for adjusting the reflective direction of light illuminating the micromirrors according to a control signal; the light source generates a light beam illuminating the spatial light modulator; the projection lens is aligned with a first direction of the spatial light modulator so that a micro light spot array formed through the micromirror by the light source projected onto the surface of a light-sensitive material; the micro-displacement driving mechanism is connected with the spatial light modulator, and can drive the spatial light modulator to move in third and fourth directions that are perpendicular to each other, in order to finely adjust the position on the surface of the light-sensitive material onto which the micro light spot array is projected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.