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Logo The Christie Mirage 5000, a 2001 DLP projector. Digital light processing (DLP) is a set of chipsets based on optical micro-electro-mechanical technology that uses a digital micromirror device. It was originally developed in 1987 by Larry Hornbeck of Texas Instruments. While the DLP imaging device was invented by Texas Instruments, the ...
Schematic representation of Stereolithography: a light-emitting device a) A laser or DLP selectively illuminates the transparent bottom c) of a tank b) filled with a liquid photo-polymerizing resin. The solidified resin d) is progressively dragged up by a lifting platform e) An SLA produced part An SLA printed model of a circuit board with ...
The EnvisionTEC stand at the Hannover Messe 2016. In 2002, EnvisionTEC started producing Perfactory printers using Texas Instruments DLP [9] projectors. In this process, a vat of liquid photopolymer or resin is cured by projecting images from a digital light source to solidify the photopolymer voxel by voxel, resulting in a solid object.
A DMD chip, used in most projectors and some TVs. The digital micromirror device, or DMD, is the microoptoelectromechanical system (MOEMS) that is the core of the trademarked Digital Light Processing (DLP) projection technology from Texas Instruments (TI).
SprintRay Inc. is an American technology company that develops and manufactures 3D printing hardware, software, and materials solutions for the dental market [2].It was founded in 2015 by 2 Ph.D students at the USC Viterbi School of Engineering, entering the dental market shortly after a successful Kickstarter campaign in 2016 that raised over $400,000 [3].
Stereolithography uses a high intensity light projector, usually using DLP technology, with a photosensitive polymer resin. It will project the profile of an object to build a single layer, curing the resin into a solid shape. Then the printer will move the object out of the way by a small amount and project the profile of the next layer.
For example, DLP-based methods have an advantage of manufacturing the entire layer at once. However, DLP idle time is longer due to the adhesion force. SLA based method uses two or more lasers that intersect at specific points to cure the material -- point by point curing -- however, it presents challenges in both planning and implementation.
Larry Hornbeck received a Ph.D. in physics from Case Western Reserve University in 1974. He joined TI in 1973 and he began work on optical microelectromechanical systems in 1977.