Exfo X-Cite XI120 Fluorescence Illumination System

The Exfo X-Cite XI120 is a 120 W fluorescence illumination system delivering high-intensity, uniform illumination for microscopy-based research, diagnostics, and imaging applications. Equipped with a proprietary 120 W metal halide short arc lamp and Intelli-Lamp technology, the system provides extended lamp life to 2000 hours typical operation with consistent spectral output across a rich, broad spectrum that exceeds conventional mercury arc lamps. The XI120 warm-up period is approximately 90 seconds, enabling rapid deployment.

Safety interlocks prevent accidental UV exposure, while specimen-level thermal isolation eliminates heat transfer to samples.

Technical Specifications

• Light source: 120 W metal halide short arc lamp


• Lamp life: 2000 hours typical and guaranteed


• Warm-up time: ~90 seconds


• Spectral output: Broad spectrum with high excitation intensity, exceeding conventional mercury arc performance


• Illumination field: Uniform across field of view


• Thermal design: No heat transfer to specimen


• Light guide: 3 mm liquid light guide; 1.5 m or 3 m lengths available


• Built-in shutter: 200 ms response time


• Built-in timer: Exposure control and photobleaching reduction

Key Features

• Intelli-Lamp technology for extended operational life and stable output


• Pre-aligned lamp cartridge for simplified replacement


• RS-232 interface for automated control of iris, lamp, and timer functions


• Panel-mounted intensity adjustment and iris control


• Accumulated lamp usage and failure indicators with LED display (PC model)


• Optional foot pedal shutter control


• Universal input power supply (100–240 VAC, 50/60 Hz; 2.4–1.0 A)


• High-efficiency, switch-mode, constant power output with line isolation

Typical Applications

• Fluorescence microscopy imaging


• Research-grade specimen excitation


• Diagnostic imaging workflows


• Multi-fluorophore excitation protocols

Compatibility & Integration The XI120 integrates with wide-field fluorescence microscopes from major manufacturers via standard microscope adapters and collimating optics. RS-232 computer control enables integration into automated imaging systems, with Mode, UP/DOWN adjustment, and START/STOP functions available on PC-configured units.