Method of making a three-dimensional object by stereolithography
US6264873A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Sep 24, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/49013
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved method for stereolithographically making an object by alternating the order in which similar sets of vectors are exposed over two or more layers. In another method, a pattern of tightly packed hexagonal tiles are drawn. Each tile is isolated from its neighboring tiles by specifying breaks of unexposed material between the tiles. Using an interrupted scan method, vectors are drawn with periodic breaks along their lengths. In another method, modulator and scanning techniques are used to reduce exposure problems associated with the acceleration and deceleration of the scanning system when jumping between vectors or changing scanning directions. In another method, a capability for automatically inserting vents an drains into a three-dimensional object representation is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.