News: LEDs
8 October 2025
Optrans and Marktech add UVA (365nm, 395nm) and near-UV (405nm) to UV LED range
Optoelectronic component maker Optrans Corp of Kawasaki City, Japan, in partnership with Marktech Optoelectronics Inc of Latham, NY, USA (a joint venture between Optrans and Marktech International that designs and manufactures optoelectronics components and assemblies), has released new ultraviolet and near-ultraviolet LEDs emitting at 365nm, 395nm and 405nm. These additions expand their portfolio of UV LEDs, offering OEMs and design engineers enhanced options for curing, fluorescence, forensics, disinfection, NDT inspection, and specialty applications across multiple industries. The new UV LED products offer high optical power output in a cost-effective, molded-through-hole package.
New 365nm UVA LED
- Optrans USFZ366C5 (Marktech MTE3660C1-UV) No Shoulder.
- Optrans USFZ366C1 (Marktech MTE3660C5-UV) Shoulder for positioning.
3mm and 5mm water-clear 365nm UVA LEDs delivering high brightness and reliability for demanding applications. Typical uses include: - deep curing of adhesives, inks, and coatings;
- fluorescence excitation in non-destructive testing (NDT-FP), mineralogy, and document validation;
- forensics applications, such as detecting trace bodily fluids and other evidence;
- specialized uses in reptile and aquatic research.
New 395nm UVA LEDs
- Optrans USF395N1 (Marktech MTE3950N1-UV) – Round lens.
- Optrans USF395N2 (Marktech MTE3950N2-UV) – Flat lens.
These versatile 395nm emitters are suitable for general-purpose curing, 3D printing, hobbyist projects, counterfeit detection, and household inspection (blood or body fluid contamination, pet stains). The visible purple glow allows users to track curing progress with ease.
New 405nm Near-UV LEDs
- Optrans VSF405N1 (Marktech MTE4050N1-UV) – Round lens.
- Optrans VSF405N2 (Marktech MTE4050N2-UV) – Flat lens.
405nm sits at the edge of the visible spectrum, enabling deep penetration into adhesives, resins, and biofilms. These LEDs are particularly effective for:
cationic polymerization and oxygen-inhibition resistant curing; - thick coating, adhesive, potting compound, and 3D resin curing;
- high-gloss, tack-free finishes in inks and coatings;
- continuous disinfection of occupied spaces, with reduced impact on skin and eyes compared to deep UV wavelengths.
Applications by wavelength
- 365nm: deep curing, fluorescence inspection, document validation, forensics, mineralogy, reptile health, and non-destructive testing;
- 395nm: versatile curing, 3D printing, counterfeit detection, hobbyist/crafting, and household inspection.
- 405nm: deep and thick curing, cationic polymerization, advanced surface curing, and visible-light-based disinfection.
