THORLABS M850L3-C1 Quick Start Manual

Description
Thorlabs' M850L3-C Collimated LEDs consist of the M850L3 mounted LED and a lamphouse-port-
compatible housing that contains an aspheric collimation optic. The LED has a nominal wavelength
of 850 nm and is mounted to the end of a heat sink equipped with internal SM1 (1.035"-40) threads.
For information on each available version of the M850L3, please see the Specifications table below.
Specifications
Color
Nominal Wavelength a
Bandwidth (FWHM)
Maximum Current (CW)
Forward Voltage
Electrical Power (Max)
Emitter Size
Typical Lifetime
Operating Temperature (Non-Condensing)
Storage Temperature
b
Risk Group
a. Value is approximate.
b. According to the standard IEC 62471:2006, Photobiological Safety of Lamps and Lamp Systems
Item #
a,b
Total Beam Power
Beam Diameter a
Compatible Microscopes
a. Values are approximate.
b. Measured at Maximum Current.
Operating Instructions
Be sure to provide air ventilation in order to avoid overheating, drops in optical power, and
reduced lifetime. Each LED has a characteristic switch-on behavior, which depends on the LED
properties and environment conditions. An important criterion is the heat dissipation. The M850L3-
C LEDs have a unique thermal design that reduces the power decay to a minimum.
The image below shows the M850L3-C's male connector, which is a standard M8x1 sensor circular
connector. Pins 1 and 2 connect to the LED. Pins 3 and 4 are used for the internal EEPROM. Only use
these connections when using a Thorlabs LED driver.
After an LED is switched on, it will warm up which can cause the optical power to decay. The heat
sink of the M850L3-C provides good thermal management, reducing the loss of power as the LED
reaches its equilibrium temperature.
M850L3‐C1
Common Specifications
M850L3-C1 M850L3-C2
480 mW 330 mW
50 mm 37 mm
Olympus BX and IX Leica DMI
Collimated LEDs, 850 nm
M850L3‐C2
IR
850 nm
30 nm
1200 mA
2.95 V
3540 mW
1 mm x 1 mm
100 000 h
0 to 40 °C
-40 to 70 °C
RG1 – Low Risk Group
M850L3-C4
400 mW
44 mm
Zeiss Axioskop
M850L3‐C4
M850L3‐C5
M850L3-C5
370 mW
43 mm
Nikon Eclipse
March 30, 2018
25161‐S01, Rev E