BU-LASER presents the 20W 405nm UV Fiber-Coupled Laser Module—a heavy-duty industrial-grade ultraviolet light source exclusively optimized for large-format DLP 3D resin printing, high-speed mass-production DLP printers, thick-layer resin curing, and high-precision UV lithography. Built around genuine high-power 405nm UV laser diode, high-efficiency fiber coupling system, precise temperature control with water cooling, this module delivers stable 20W continuous UV output, uniform fiber-transmitted energy, and perfect spectral matching with mainstream 405nm photosensitive resins. It completely solves the bottlenecks of low power, slow curing, uneven surface, and short lamp life of traditional LED DLP light sources, realizing ultra-fast printing speed, large-format build volume, high layer resolution, and 24/7 continuous mass production for industrial DLP 3D printers.
Core Advantages for Industrial DLP 3D Printing
1. 405nm UV Wavelength: Perfect Resin Absorption Matching
405nm ±3nm pure UV wavelength is the universal absorption peak of all commercial UV photosensitive resins (standard desktop/industrial tough resin, ceramic resin, castable resin, flexible resin, high-temperature resistant resin).
Ultra-narrow spectral linewidth ≤4nm FWHM, no redundant visible light stray light, ≥92% resin photochemical reaction efficiency, instant resin polymerization, minimal residual uncured monomer inside printed parts, greatly improving mechanical strength, dimensional accuracy, and surface finish of finished prints.
Superior to 385nm UV: better fiber transmission efficiency, less UV attenuation in air, wider resin compatibility, and no resin yellowing after curing.
2. 20W Ultra-High Power Output: Breakthrough DLP Printing Throughput
20W real CW optical power fiber output (not electrical power), 4× higher than mainstream 5W DLP UV modules, realizing 70%+ printing speed improvement compared with ordinary LED/ low-power laser DLP systems.
Supports ultra-large-format DLP printing platforms (up to 400×400mm build area), thick-layer high-speed curing (single layer up to 150μm), and continuous mass production of industrial structural parts, dental models, and investment casting components.
Full stepless power adjustment: 0–20W adjustable, freely matched with different resin viscosity, layer thickness, and DLP projector exposure time parameters.
3. High-Power UV Fiber Coupling Design: Uniform Large-Area Illumination
Adopts 105um/150μm UV-grade low-OH multimode silica fiber (NA=0.22) specially optimized for 405nm deep UV transmission, with ultra-low UV attenuation, anti-UV aging cladding, and no fiber damage under long-term 20W high-power irradiation.
Upgraded dual-aspheric UV glass lens space coupling system, coupling efficiency ≥90%, minimal optical loss, and ultra-uniform energy distribution across fiber core.
Fiber-delivered uniform UV light eliminates the hot-spot non-uniformity inherent in LED array DLP light engines; after external homogenizing light path, the entire DLP printing surface achieves flat-top uniform illumination, ensuring consistent curing from center to edge of large-format printing area, no edge under-curing or local over-curing deformation.
Standard SMA-905 fiber connector (FC/PC optional), customizable fiber length (1.5m standard, 1–10m optional) with UV-resistant anti-kink sleeve, flexible optical path layout inside large DLP equipment, separate laser host and printing chamber installation, reducing heat interference on resin tank.
