LSM Series LED Light Sources


This product is currently out of stock and unavailable.

Item Code: N/A

Please note that the LSM LED modules require the LDC-1 controller.

LED light sources are ideal for fluorescence excitation and other measurements requiring narrowband illumination. The innovative optical design of the LSM LED family provides highly efficient coupling into an optical fiber, ensuring high power for fluorescence excitation where every photon counts.

The LSM LEDs are controlled by the LDC-1 compact single channel driver and controller packed with features and functionality. The LDC-1 controller has an easy to use touchscreen for displaying and accessing key information stored in the LSM LEDs. Proprietary electronics provide stable, high-current operation in continuous, pulsed, and modulation modes.

When using the internal modulation mode, the user can select sine, triangle or square waveforms. The LDC-1 also enables LSM LED control using an external source such as a function generator or a trigger/modulation signal from a spectrometer or other electronic device.

  • UV, Visible, NIR and broadband wavelengths
  • Passive cooling design
  • Smart controller with color LCD touch screen
  • Multiple mounting options (DIN rail, optical bench, rack)
  • External trigger option (function generator or trigger signal)

Description – LDC-1 Driver and Controller  Specification
Dimensions: 14.7 x 7.3 x 8.9 cm
Weight: 800 g
Power consumption: 2A (maximum) at 15 VDC
Power requirements: 15 VDC power supply, 30W MAX
Display: 3.5” 480 x 320 resolution color graphics display with resistive touch screen
Signal sources: Internal DC
Internal Sine wave
Internal Triangle wave
Internal Square wave
External Modulation Input –0-5V signal or driven with a function generator
Environmental conditions: Temperature:  0 °C to 50 °C
Humidity:  ≤ 85% Relative humidity, non-condensing
Altitude:  0 to 3050 m (0 ft. to 10,006 ft.)
Safety and regulatory: CE

Description – LSM LED Light Sources Specification
LSM Dimensions: 3 x 6.4 x 3.3 cm
Weight: 120 g
Power consumption: 2A (maximum)
Environmental Conditions: Temperature:  0°C to 50°C
Humidity:  ≤ 85% Relative humidity, non-condensing
Altitude:  0 to 3050m (0 ft. to 10,006ft)
Safety and Regulatory: CE
Optical connector: SMA 905

Part Number CWL (nm) FWHM (nm)

Typical Power (mW) Coupled into 400 µm 0.39 NA Fiber 

Maximum Drive Current Typical Peak Pulse Power (mW) Coupled into 400 µm 0.39 NA Fiber
Nominal Typical CW Pulsed
LSM-265A 265 267 11 0.18 350 mA 350 mA 0.22
LSM-280A 280 282 11 0.18 350 mA 350 mA 0.22
LSM-310A 310 312 16 0.21 350 mA 350 mA 0.23
LSM-365A 365 371 12 10.08 1400 mA 2000 mA 14.28
LSM-385A 385 388 12 15.95 1400 mA 2000 mA 20.55
LSM-405A 405 414 17 10.26 1000 mA 1300 mA 16
LSM-470A 470 461 18 3.15 350 mA 1000 mA 7.23
LSM-533A 533 528 36 1.96 350 mA 1000 mA 4.08
LSM-635A 635 628 14 2.68 350 mA 1000 mA 7.55
LSM-880A 880 870 44 0.84 350mA 1000 mA 2.41
LSM-WARM-WHITE 3689K 6.41 700 mA 1000 mA 9.99

Please Note:  

The actual spectra for the LEDs may vary from those reported here due to differences in operating parameters and variations in the manufacturing process.

The peak wavelength may vary slightly from the nominal wavelength depending on the spectrometer configuratoin used to measure the LEDs.

UV protective eyewear should be used when working with UV LEDs (265, 280, 310, 365, 386 nm) to avoid eye damage.


Applications in which this product is used:

Measurement Techniques in which this product is used:

Product Manuals:



Please note that the LSM LED modules require the LDC-1 controller.