BU‑LASER introduces the 100W 405nm high‑power UV fiber‑coupled laser module, an industrial‑grade ultra‑high‑energy ultraviolet light source purpose‑built for industrial direct imaging, large‑format photolithography, PCB direct imaging, semiconductor mask‑free exposure, high‑speed UV curing, and micro‑pattern direct writing systems. Combining genuine high‑power multi‑emitter 405nm UV laser diodes, precision fiber coupling technology, and heavy‑duty water cooling, this module delivers stable 100W continuous‑wave UV output, ultra‑uniform fiber‑transmitted energy, and narrow‑band pure UV spectral output. It solves core pain points of traditional UV light sources such as low power, uneven illumination, slow exposure speed, and short service life, enabling ultra‑high‑speed, large‑area, high‑precision direct imaging for advanced industrial manufacturing.
Core Advantages for Industrial Direct Imaging
1. 405nm Pure UV Wavelength: Perfect Matching for Direct Imaging Photoresists
405nm ±3nm deep ultraviolet wavelength is the universal optimal excitation wavelength for industrial positive/negative photoresists, dry‑film photoresists, and imaging resins used in PCB direct imaging, semiconductor micro‑fabrication, and micro‑pattern exposure.
Ultra‑narrow spectral linewidth ≤4nm FWHM eliminates stray visible light interference, achieving ≥95% photochemical reaction efficiency for imaging materials. It ensures sharp pattern edges, minimal line edge roughness (LER), high dimensional accuracy, and consistent exposure uniformity across large‑area substrates.
Superior to shorter‑wavelength 385nm UV: higher fiber transmission efficiency, lower attenuation, wider photoresist compatibility, and no material yellowing after exposure, ideal for long‑term mass‑production direct imaging.
2. 100W Ultra‑High‑Power Output: Breakthrough Direct Imaging Throughput
100W real optical fiber‑coupled CW output (not electrical power), significantly higher than conventional 10–50W UV modules. It enables 80%+ faster exposure speed, supporting ultra‑large‑format direct imaging platforms up to 600×600mm, thick‑layer high‑speed exposure, and 24/7 non‑stop industrial batch production.
Full stepless power adjustment (0–100W) allows precise matching with different photoresist sensitivity, exposure time, and imaging resolution requirements, adapting to micro‑fine to large‑pattern direct imaging applications.
3. High‑Power UV Fiber Coupling: Uniform Large‑Area Flat‑Top Illumination
Equipped with a 105μm/150um UV‑grade multimode fiber (NA=0.22) specially optimized for high‑power 405nm UV transmission, featuring anti‑UV‑aging cladding, ultra‑low optical attenuation, and resistance to long‑term high‑power laser damage.
Upgraded multi‑aspheric UV glass lens space coupling system achieves coupling efficiency ≥90%, with uniform energy distribution across the fiber core.
Standard SMA‑905 fiber connector (FC/PC optional), customizable fiber length (2m standard, 1–15m optional) with UV‑resistant anti‑kink sleeves. It enables flexible optical path layout, separation of the laser host and imaging chamber, and reduces thermal interference with sensitive imaging substrates.
4. Heavy‑Duty Thermal Management: 24/7 Industrial Continuous Operation
Exclusive high‑flow active water cooling system engineered for 100W high‑power UV operation, with thermal resistance ≤0.25°C/W. It stably maintains laser diode junction temperature at 50±1°C under full‑power output, completely eliminating thermal drift, power decay, and wavelength shift.
Intelligent dynamic cooling adjusts water flow rate (≥3.0L/min) according to output power, balancing energy efficiency and cooling performance. Leak‑proof G1/4 water connectors with pressure/flow dual monitoring trigger alarms and automatic shutdown for cooling abnormalities to protect laser chips and fibers.
Fanless zero‑noise design avoids dust accumulation, perfectly adapting to ISO Class 6 clean‑room environments required for semiconductor and PCB direct imaging equipment.
5. High‑Frequency PWM Modulation & Industrial‑Grade Integration
Wide‑voltage 24V DC (22–26V) industrial power input, compatible with mainstream direct imaging equipment power systems. Supports 0–100% high‑frequency PWM modulation (1–1kHz) , fully synchronized with DMD digital micromirror devices and high‑speed galvanometer scanners for precise dynamic exposure control.
