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This isosbestic LED (iLED) can be swapped to change the isosbestic excitation of an existing integrated Fluorescence Mini Cube (ilFMC-G3) or the Rotary Bundle-imaging Fluorescence Mini Cube (RBFMC), respective. ILED provides a simple solution to increase the compatibility for new biosensors. The iLED comes in three possible options: 405 nm, 415 nm, 425 nm and 440nm with their corresponding filters that narrows the excitation wavelength to a ~10nm bandwidth.


All 3rd generation integrated fluorescence mini cubes (ilFMC-G3) since April 2025 are compatible have a removeable isosbestic LED. As are all RBFMC-G2 since March 2026.

Optical fiber compatibility- Core diameter 200 to 400µm
- NA 0.37 to 0.57
Spectral bandwith

- Isosbestic Excitation

  • 400-410 nm
  • 410-420 nm
  • 451-433 nm
  • 433-445 nm
Max Current500 mA
Emitter size400 µm diameter - NA0.22
Max Output power
(fibre µm)
LED 400-410 nm
= 60 µW (at 200 mA, CW)*

* with the ND filter T=10% included.



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