Nuvoton Launches 4.5W 402nm Violet Laser: 1.5x Power Boost Targets Industrial and Medical Applications
Nuvoton has officially launched a 4.5W 402nm violet semiconductor laser, delivering a 1.5x power increase over its predecessor. This high-power violet laser enables more efficient domestic solutions for high-end applications including direct-write lithography, medical aesthetics, and industrial curing—further expanding Nuvoton's technology footprint in optoelectronic devices.
Nuvoton Expands into Optoelectronic Devices
Nuvoton Technology is best known for its MCUs and audio SoCs, but its optoelectronics business has been quietly gaining momentum. In April 2026, Nuvoton officially launched a 4.5W 402nm violet semiconductor laser—a 1.5x power increase over its predecessor—marking a significant step forward in the semiconductor laser space.
The 402nm wavelength falls within the near-ultraviolet spectrum, with broad and irreplaceable applications in industrial processing, medical, and scientific research. Nuvoton's new high-power violet laser leverages its proprietary GaN-based laser diode technology, achieving superior electro-optical conversion efficiency and reliability alongside the elevated power output.
Core Technical Breakthroughs
- Output power 4.5W (CW): 50% increase over the previous generation's 3.0W, leading among domestic violet laser peers
- Center wavelength 402nm±3nm: precise wavelength control meeting stringent process requirements in lithography and curing
- Electro-optical conversion efficiency >35%: excellent energy efficiency reducing system thermal load and operating costs
- TO-9 package: industry-standard form factor for easy system integration
- Expected lifetime >10,000 hours: meeting reliability requirements for industrial 24/7 continuous operation
Three Core Application Domains
Laser Direct Imaging (LDI): In PCB manufacturing and advanced semiconductor packaging, 402nm violet lasers serve as the core light source for LDI equipment. Higher power translates directly to faster scan speeds and greater production line throughput, boosting PCB factory productivity.
Medical Aesthetics: Violet wavelengths have established applications in dermatological treatments (such as psoriasis phototherapy) and teeth whitening. Nuvoton's 4.5W laser enables device miniaturization and portability through its high power density.
Industrial UV Curing: In 3D printing, optical fiber coating, electronic adhesive curing, and inkjet printing, high-power violet lasers enable precise spot or line curing, replacing traditional mercury lamp solutions with faster response and greater environmental friendliness.
Hengsen Technology Perspective
Nuvoton is Hengsen Technology's longest-standing and most deeply collaborative core brand partnership. The 4.5W violet laser launch reveals Nuvoton's expanding technology boundaries beyond its MCU core business. Optoelectronic devices represent a high-value-added, high-barrier market, and Nuvoton's entry—leveraging its GaN compound semiconductor expertise—offers Hengsen's customers, particularly in industrial equipment and medical electronics, differentiated component options.
Samples are currently being stocked. Customers interested in high-power violet lasers are welcome to inquire.
Sources: Compound Semiconductor Magazine, Semiconductor Today, Nuvoton