U-FLLED LED Illumination System

Modular LED light sources for everyday fluorescence microscopy.

The U-FLLED solid-state LED illumination system is designed to make fluorescence light sources easy to add, simple to use, and ready to grow with evolving experimental needs. A complete LED solution for conventional upright and inverted microscopes, the system combines a modular design, intuitive control, and long-term stable illumination for routine fluorescence workflows.

U-FLLED LED Illumination System

Fluorescence Illumination, Purpose-Built for Conventional Microscopes

The U-FLLED solid-state illumination system is engineered to seamlessly integrate with Evident conventional upright and inverted microscopes, empowering laboratories to add or upgrade their fluorescence light source capabilities and scale their work as needs evolve with a complete 2–4 color LED illumination solution.

Its direct-mount design preserves familiar microscope operation, while a modular architecture enables you to start with essential excitation channels and expand over time. Passive, fan-free cooling ensures silent, vibration-free performance at the microscope, making it ideal for everyday use.

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U-FLLED system with blue and green LED light sources on a BX53 microscope.

U-FLLED system with two light source modules. Left to right: U-FLLED (blue/green) and U-FLLEDUV (UV).

Complete U-FLLED system with three modules. Left to right: U-FLLEDR (deep red), U-FLLED (blue/green), and U-FLLEDUV (UV).

Broad Spectral Coverage for Everyday Fluorophores

The U-FLLED system is optimized for excitation wavelengths commonly used in fluorescence microscopy. The main module includes blue and green LEDs, ideal for fluorophores like Cy2, GFP, and Texas Red. Optional UV and deep red modules support dyes such as DAPI, Hoechst, Cy5, and Alexa 680.

This solution offers practical capabilities for everyday fluorescence imaging without unnecessary complexity.

Cultured NIH/3T3.

Cultured NIH/3T3. Blue: nuclear stain (Hoechst), Green: beta-tubulin (Alexa Fluor 488), Red: fibrillarin (Alexa Fluor 568), Magenta: CPCA-HSP60 (Alexa Fluor 647). Sample courtesy of EnCor Biotechnology Inc.

Simple Controls That Fit How You Work

The U-FLLED system is designed for immediate use with simple controls. An intuitive hand controller offers PC-free operation for routine fluorescence observation, including individual channel selection and intensity adjustment.

For more structured imaging, the U-FLLED system integrates with cellSens™ imaging software, enabling software-based channel control synchronized with image acquisition.

Manual Control

Simultaneous channel control mode on the hand controller

Individual channel control mode on the hand controller

Control with cellSens Software

Simultaneous channel control mode in cellSens software

Individual channel control mode in cellSens software

Stable Performance Built for Long-Term Use

The U-FLLED system delivers stable uniform illumination using solid-state LEDs rated for about 25,000 hours of operation. Instant on/off performance, a mercury-free design, and a long lifetime reduce maintenance, minimize downtime, and lower total cost of ownership compared to traditional bulb-based illumination.

Specifications

The U-FLLED system is designed for routine fluorescence microscopy. Specifications reflect practical performance for everyday imaging workflows.

Specifications
U-FLLED
Compatibility
BX, IX, CKX, SZX, MVX, MX
Illumination type
Solid-state LED
Excitation channels
2–4 colors (standard: blue and green; UV and deep red can be added independently)
Spectral coverage
Optimized for common fluorescence fluorophores
Peak wavelength

U: 365 nm

B: 480 nm

G: 520 nm

R: 665 nm

Brightness adjustment
Individual and all wavelength control
Standalone control
Hand controller
Software control
cellSens Standard/Dimension version 4.5 or later
Integration
Direct to fluorescence illuminator mount
Illumination stability
Stable output for reproducible imaging
Cooling
Passive heat sink (fan/vibration-free)
Warm-up time
Instant on/off
Rated lifetime
~25,000 hours

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