Lambda FLED
Fluorescent Light Source

The Lambda FLED was designed as a high-power LED driver for fluorescence microscopy. Based on our proven TLED+ design, the FLED has been optimized for single-channel, high-current LEDs used as excitation light sources.

The basic system consists of an LED mounted on a special black-anodized aluminum heat sink and a controller. The controller is CNC machined from solid aluminum billet, and powered by a rugged modular universal power supply. The FLED provides intensity control and on-off control via a toggle switch or TTL logic. The on-off time is less than 25 µsecs when using TTL control. In addition to digital input control, the Lambda FLED has an analog input to modulate the LED intensity. The Lambda FLED is expected to have stable output that will last more than 50,000 hours.

The Lambda FLED can be ordered with several different wavelength-specific LEDs that range from 365 nm to 940 nm. Please call us if you require a wavelength that is not listed.

Our dual channel Lambda FLED option combines two high power LEDs into a single light path. The FLED-DC allows the use of two channels for fluorescence imaging. Both channels are driven by individual FLED controllers and can be triggered, also individually, by a TTL signal. For greater than two LEDs in a setup, please see our Lambda 421 or Lambda OBC.

Product Current (A) Wavelength options (nm)* External Control
FLED 1 340, 365, 385, 410, 440, 460, 480, 506, 530, 561, 590, 630, 660, 740, 850, 940 Digital (BNC) / Analog (SMA)
* other wavelengths available upon request

Each Lambda FLED system includes an optical mounting adapter for the excitation port of the microscope and detailed installation instructions. Mounting adapters are designed to fit most models of Nikon, Olympus, Zeiss and Leica microscopes. Custom adapters are available at an additional cost.

  • > 50,000 hour lifetime
  • < 25 µsecs ON-OFF time
  • TTL control (with polarity switch)
  • Very stable output
  • Compact stand-alone design
  • Easy installation
  • Fluorescent microscopy
  • Ultra high speed wavelength selection (FLED-DC)


Output Range
White light (400 nm - 700 nm)

Noise/Short term stability

LED Life
> 50,000 hours

Control Box Dimensions
4 in x 3.25 in x 4.1 in | 10.2 cm x 8.3 cm x 10.2 cm

2.2 lbs | 1.0 kg

120/240 Volts
50/60 Hertz power line
75 Watts max

US Prices > Lambda FLED
International prices vary by country due to associated importation costs. Please contact your local distributor or Sutter Instrument for a quotation. Prices subject to change without notice.

LAMBDA FLED Single Channel LED Light Source
Includes Lambda FLED light source, FLED controller and power supply
*Please select one wavelength when ordering: (in nm) 340, 365, 385, 410, 440, 460, 480, 506, 530, 561, 590, 630, 660, 740, 850, 940
Catalog Number Description Price
FLED-N Lambda FLED for Nikon $2,835
FLED-N251 Lambda FLED for Nikon TE200/E300, Diaphot 200/300 $2,835
FLED-Y Lambda FLED for Olympus $2,835
FLED-Z Lambda FLED for Zeiss $2,835
FLED-L Lambda FLED for Leica $2,835
FLED-C2 Lambda FLED with C-mount $2,835

LAMBDA FLED-DC Dual Channel LED Light Source
Includes dual channel Lambda FLED light source, two FLED controllers and power supplies.
*Please select one wavelength combination when ordering: (in nm) White and 385 / White and 460 / White and 740 / 385 and 530 / 460 and 630 / 480 and 561 / 530 and 630
Catalog Number Description Price
FLED-DC-N Dual Channel Lambda FLED for Nikon $5,770
FLED-DC-Y Dual Channel Lambda FLED for Olympus $5,770
FLED-DC-Z Dual Channel Lambda FLED for Zeiss $5,770
FLED-DC-L Dual Channel Lambda FLED for Leica $5,770
FLED-DC-C Dual Channel Lambda FLED with C-mount $5,770

Catalog Number Description Price
TRIGGER3 USB trigger box $520

* Other wavelengths and wavelength combinations may be available. Contact Sutter for details.
1 Replaces the epi-illuminator
2 Suitable for SOM microscope
3 Compatible with Micro-Manager software

Custom mounting adapters are available on all models at an additional cost. Contact Sutter for details.

Lambda OBC
Lambda 421
Lambda 10-3
Lambda 10-2
Lambda 10-B

Available Wavelengths

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