News: LEDs
19 June 2025
Marktech unveils next-gen high-efficiency 25µm red dot RCLEDs for ultraprecise aiming with low power draw
Marktech Optoelectronics Inc of Latham, NY, USA, a vertically integrated designer and manufacturer of optoelectronics components and assemblies, has released its new high-efficiency 25µm-diameter resonant-cavity light-emitting diodes (RCLEDs) with a peak emission at 650nm, which it claims set a new benchmark for performance in precision optical targeting applications.
The latest 25µm-aperture ‘Red Dot’ RCLEDs deliver a 33% increase in optical output power compared with previous-generation devices under the same forward current and voltage conditions (If=5mA, Vf=2.1V), offering what is claimed to be industry-leading efficiency without sacrificing footprint or compatibility. Suitable for battery-powered systems, the enhanced efficiency translates directly into longer operational life and superior beam clarity.
Picture: Marktech’s new 25µm-aperture 650nm-peak-wavelength red dot LEDs: (left) 2.1mm-square SMD and (right) 1.6mm x 1.5mm super-compact SMD.
Available in two robust black surface-mount packages – a 2.1mm x 2.1mm-square SMD and a compact 1.5mm x 1.6mm SMD – the RCLEDs incorporate Marktech’s proprietary black encapsulation technology. This advanced packaging eliminates internal reflections and optical defects, ensuring a crisp, well-defined circular point source suitable for the most demanding optical applications
“Our new high-efficiency 25µm red dot LEDs dramatically improve battery life while maintaining the sharpest, most precise point source in the industry,” claims chief technology officer Vince Forte. “With virtually zero internal reflections and a well-defined beam profile, these RCLEDs provide an ultraclear aiming dot – critical for scopes, speed guns, pyrometers, viewfinders and finderscopes where accuracy and clarity are non-negotiable.”
Marktech says that its red dot emitters are trusted in industries ranging from defense and aerospace to sports optics, medical diagnostics, and instrumentation. With US-based manufacturing in Simi Valley, California, the components offer what is claimed to be unmatched quality, reliability, and traceability.
