Digital Light Processing(DLP) 3D Printing Technology
Digital Light Processing is another 3D Printing process very similar to stereolithography. The DLP technology was created in 1987 by Larry Hornbeck of Texas Instruments and became very popular in Projectors production. It uses digital micro mirrors laid out on a semiconductor chip. The technology is applicable for movie projectors, cell phones and 3D printing.
For 3D printing DLP as well as SLA works with photopolymers. But what makes SLA and DLP processes unalike is a different source of light. For DLP 3D amateurs generally use more conventional sources of lights such as arc lamps. The other important piece of process is a liquid crystal display panel, that is being applied to the whole surface of building material during single run of DLP process. The material to be used for printing is liquid plastic resin that is placed in the transparent resin container. The resin hardens quickly when affected by large amount of light.The printing speed is pretty impressive. The layer of hardened material can be created with such printer in few seconds. When the layer is finished, it’s moved up and the next layer is started to be worked on.
The results of such printing are robust and have excellent resolution. Big advantage of DLP over SLA is much less materials to be used for detail production, that results in lower cost and less waste. Dlp 3D prinrer now a days widely used in jewelry industies for prototyping. Examples of DLP rinses are the Micro protojet Dlp 3D Printer and Caliber 100 Dlp 3D printers, Caliber 200Dlp 3D printers, Caliber 250Dlp 3D printers .