Today's light curing 3D printer is still a popular one. After all, its application field is also very close to our life. For example, handicrafts, jewelry, dental molds and so on, we can see it in our daily life. There are three kinds of light curing 3D printers, namely SLA, DLP and LCD light curing 3D printers. Today, pioncreat will discuss its principle and the comparison between them.

1、 SLA light curing 3D printer
SLA forming principle mainly uses ultraviolet light as the light source, and then controls it through the galvanometer system to make it draw the shape of the object on the surface of the liquid resin, then drop the object down for a distance, and then immerse the platform into the liquid resin, so as to form solid printing.

2、 DLP light curing 3D printer
The basic principle of DLP molding: firstly, the model is horizontally cut into layers with 3D printing software, then the shape of the first layer of resin model is projected, and then light curing molding. The first layer of molding will slightly increase the object and project the shape of the next layer of model to the resin, so repeat and print the model in layers.

3、 LCD light curing 3D printer
In fact, in the actual principle, the principle of LCD is basically similar to that of DLP. The difference is that the light source of DLP is replaced by LCD. The imaging principle of LCD panel is adopted. The three primary colors of red, green and blue of the filter are used to filter out the infrared and ultraviolet light (which has a certain damage to the LCD panel), and the three LCD panels are projected into three primary colors.

4、 Comparison of three molding technologies
Forming speed: DLP > LCD > SLA
Printing accuracy: DLP > SLA > LCD > FDM
Print size range: SLA > DLP > LCD
Range of materials: (DLP ≈ LCD) > SLA
Service life of main components: DLP ≈ SLA > LCD
Machine price: SLA > DLP > LCD
Price of consumables: SLA ≈ DLP ≈ LCD
By comparison, the situation is clear at a glance. I believe you also know how to choose to buy a UV curing 3D printer in the future.