THORLABS M470L3-C1 Quick Start Manual

Description

Thorlabs' M470L3-C Collimated LEDs consist of the M470L3 mounted LED and a lamphouse-port-
compatible housing that contains an aspheric collimation optic. The LED has a nominal wavelength
of 470 nm and is mounted to the end of a heat sink equipped with internal SM1 (1.035"-40) threads.
The M470L3-C LEDs need to be supplied with a constant current that must not exceed 1000 mA. The
current source must be able to deliver this current at a forward voltage of 3.2 V. For the total
power output of each available version, please see the Specifications table below.

Specifications

Color
a
Nominal Wavelength
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
a
Beam Diameter
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 M470L3-
C LEDs have a unique thermal design that reduces the power decay to a minimum.
The image below shows the M470L3-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 M470L3-C provides good thermal management, reducing the loss of power as the LED
reaches its equilibrium temperature.
M470L3‐C1
Common Specifications
M470L3-C1 M470L3-C2
350 mW 250 mW
50 mm 37 mm
Olympus BX and IX Leica DMI
Collimated LEDs, 470 nm
M470L3‐C2
Blue
470 nm
25 nm
1000 mA
3.2 V
3200 mW
1 mm x 1 mm
100 000 h
0 to 40 °C
-40 to 70 °C
RG2 – Moderate Risk Group
M470L3-C4
310 mW
44 mm
Zeiss Axioskop
M470L3‐C4
M470L3‐C5
M470L3-C5
300 mW
43 mm
Nikon Eclipse
December 8, 2015
25116‐S01, Rev B