LED light source KeyLight™
ultravioletUVvisible

LED light source - KeyLight™ - Excelitas Technologies - PCO - ultraviolet / UV / visible
LED light source - KeyLight™ - Excelitas Technologies - PCO - ultraviolet / UV / visible
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Characteristics

Illumination technology
LED
Spectrum
visible, multiple-wavelength, broadband, ultraviolet, UV
Other characteristics
compact, USB, multi-channel
Technical applications
for microscopes, for microscopy, for microscope illuminators
Wavelength

Min.: 377 nm

Max.: 740 nm

Description

Overview
The Phoseon® KeyLight™ LED light source for FEO is designed for microscopy and fluorescence microscopy instruments to deliver reliable, precise illumination for laboratory applications. KeyLight features Phoseon’s patented LED technology providing stable, controllable UV and visible output in a compact form factor for easy integration.

Main features and benefits
KeyLight provides an LED-based solution delivering intense, broad-spectrum UV and visible wavelengths. The compact unit supports 4 to 7 channel configurations, offering flexibility for various application requirements. KeyLight is intended for molecular and cellular biology laboratories and for OEMs seeking an energy-efficient, customizable, low-maintenance illumination source that is straightforward to integrate.

Features
  • Small form factor for easy integration
  • Enables high-performance imaging
  • Potential cost and energy savings
  • Architecture supports multiple optical outputs and control options
  • Customizable to meet application-specific requirements
  • Low maintenance and long operational lifetime
  • Software support available

Applications
  • Microscopy
  • Fluorescence microscopy

Specifications table (line-by-line format)
KeyLight | KL400 | KL500 | KL600 | KL700
Optical sources | 4 fully semiconductor light sources, broadband white light | 5 switchable semiconductor light sources | 6 switchable semiconductor light sources | 7 switchable semiconductor light sources
Available wavelengths (nm) | 377, 425, 450, 475, 520, 545, 555, 560, 630, 730, 740 and others on request (common column for KL400–KL700)
Supported dyes/techniques | DAPI, POPO, Aqua, FISH, Eosin, CY3, Texas Red, CY5 and many others (common column)
Optical power coupling | Coupled to a standard Olympus microscope | Integrated output adapter for 3 mm liquid light guide | 1.5 mm main fiber with SMA connector and 3 mm liquid light guide (KL600/KL700)
Light delivery | Mounted adjacent to microscope with focus slide | Liquid light guide output connected to microscope | Fiber or liquid light guide output connected to microscope (KL600/KL700)
Electronic control | On/off control and graduated intensity adjustment via PC connection over USB (common column)
Additional control options | Phoseon remote control for on/off and white light intensity control only; local white light intensity control on Phoseon unit only
Power requirements | External 12 V DC, 8.5 A power supply (common column)
Dimensions (L x W x H, mm) | KL400: 77 x 125 x 160 (without adapter and connectors) | KL500: 160 x 140 x 160 | KL600/KL700: ~220 x 200 x 140
Noise level | < 60 dBA at 1 m (common column)
Weight (lb) | KL400: 3.75 | KL500: < 11.02 | KL600/KL700: < 15 (approx.)
Warranty | 12 months (common column)
Operating temperature range | 15°C to 30°C (common column)
Relative humidity | < 80% (non‑condensing) (common column)
Operating altitude | < 3,000 m (9,850 ft) (common column)
Certifications | RoHS, REACH, CE (common column)

Technical characteristics / specifications
  • Commercial model: KeyLight™ (Phoseon)
  • Variants: KL400, KL500, KL600, KL700
  • Optical sources: 4 to 7 semiconductor light sources depending on variant
  • Available wavelengths: 377, 425, 450, 475, 520, 545, 555, 560, 630, 730, 740 nm and others on request
  • Supported dyes/techniques: DAPI, POPO, Aqua, FISH, Eosin, CY3, Texas Red, CY5, etc.
  • Output options: Olympus microscope coupling, 3 mm liquid light guide adapter, 1.5 mm fiber with SMA connector
  • Controls: USB PC control (on/off, intensity), Phoseon remote control, local intensity control
  • Power: external 12 V DC, 8.5 A
  • Dimensions: KL400 77 x 125 x 160 mm (without adapter), KL500 160 x 140 x 160 mm, KL600/KL700 ~220 x 200 x 140 mm
  • Noise level: < 60 dBA at 1 m
  • Weight: KL400 3.75 lb, KL500 < 11.02 lb, KL600/KL700 < 15 lb
  • Warranty: 12 months
  • Operating range: 15°C to 30°C
  • Humidity: < 80% (non‑condensing)
  • Operating altitude: < 3,000 m (9,850 ft)
  • Certifications: RoHS, REACH, CE

Catalogs

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Exhibitions

Meet this supplier at the following exhibition(s):

electronica Munich 2026
electronica Munich 2026

10-13 Nov 2026 Munich (Germany) Hall B4 - Stand 302

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