What is DLP 3D Printing?

Definition of DLP 3D Printing：

DLP (Digital Light Processing) 3D printing is a vat photopolymerization resin 3D printing technology.

• Core component: DMD (Digital Micromirror Device) chip, with thousands of independently switchable micro-mirrors.
• Working principle: The UV light source illuminates the DMD chip; each micro-mirror turns ON/OFF to reflect light and project a full-layer 2D slice image onto liquid photopolymer resin in one exposure.
• The exposed resin instantly cures and solidifies. The build platform moves up/down layer by layer, stacking cured layers to form a complete 3D part.
• Key advantages: Whole-layer simultaneous exposure (fast speed), high resolution, ultra-smooth surface finish, fine details, stable mechanical properties — widely used in industrial resin parts, 3D printed shoes, dental, jewelry, and micro-manufacturing.

Critical prior misconception cleared:

Traditional desktop DLP uses UV LED (not laser).

But industrial high-power DLP light engines are now upgraded to 405nm fiber-coupled lasers — this is exactly what BU-laser has manufactured.

BU- Laser is the original manufacturer of fiber-coupled laser modules. The company has over 16 years of experience with lasers, and they can provide you with high-quality OEM & ODM services for all the semiconductor lasers!