THORLABS M470L3-C1 User manual

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December8,2015
25116‐S01,RevB
M470L3‐C4 M470L3‐C5
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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
Common Specifications
Color Blue
Nominal Wavelengtha470 nm
Bandwidth (FWHM) 25 nm
Maximum Current (CW) 1000 mA
Forward Voltage 3.2 V
Electrical Power (Max) 3200 mW
Emitter Size 1 mm x 1 mm
Typical Lifetime 100 000 h
Operating Temperature (Non-Condensing) 0 to 40 °C
Storage Temperature -40 to 70 °C
Risk Group
b
RG2 – Moderate Risk Group
a. Value is approximate.
b. According to the standard IEC 62471:2006, Photobiological Safety of Lamps and Lamp Systems
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.
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Item # M470L3-C1 M470L3-C2 M470L3-C4 M470L3-C5
Total Beam Powera,
b
350 mW 250 mW 310 mW 300 mW
Beam Diametera50 mm 37 mm 44 mm 43 mm
Compatible Microscopes Olympus BX and IX Leica DMI Zeiss Axioskop Nikon Eclipse
Collimated LEDs
,
470 nm
M470L3‐C1
M470L3‐C2


December8,2015
25116‐S01,RevB
Performance Plots
Drawing
2 LED Cathode (White)
Connector Pin Out
1 LED Anode (Brown)
3 EEPROM GND (Black)
4 EEPROM I0 (Blue)
Typical performance for the bare LED.


December8,2015
25116‐S01,RevB
Power Supply
We recommend using Thorlabs’ DC2200 or LEDD1B LED current drivers
(for control of a single LED). Alternatively, the DC4100 or DC4104 driver can
be used with the DC4100-HUB, which allows simultaneous control of up to 4 individual LEDs.
If you decide to use your own DC source, please make sure that the operation current does not
exceed the maximum allowed value, sufficient forward voltage is supplied, and that the correct
connection is made to Pins 1 and 2.
Maintenance and Service
The M470L3-C LEDs are not water resistant and must be protected from adverse weather
conditions. To avoid damage, do not expose them to spray, liquids, or solvents. The M470L3-C LEDs
do not contain any parts serviceable by the user and does not require regular user maintenance. Do
not open the enclosure. If a malfunction occurs, contact Thorlabs for return instructions.
Warnings and Safety
Inappropriate use of any Collimated LED product may result in permanent eye damage. To prevent
injury, use this product in accordance with the International Standard “Photobiological Safety of
Lamps & Lamp Systems” IEC 62471. These LEDs fall under Risk Group RG2 – Moderate Risk Group in
accordance to the standard IEC 62471:2006.
If using these LEDs in microscope applications as a replacement for mercury vapor lamps, the same
precautions should be taken.
During normal operations, the casing temperature may exceed ambient temperature by as much as
25 ˚C (45 ˚F). To prevent higher case temperatures, the products should be operated without
anything hindering air movement around the convective cooling fins.
Please note that these LEDs are not suitable for household room illumination.
These LEDs must not be operated in explosive environments and should only be used with shielded
connection cables.
All statements regarding safety of operation and technical data only apply when the unit is
operated correctly according to its specifications. The safety of any system incorporating the
equipment is the responsibility of the assembler of the system.
UV Warning Statement
These LEDs emit intense UV radiation during operation. Precautions must be taken to prevent
looking directly at the UV light. If viewing the UV light is necessary, UV light protective glasses
must be worn to avoid eye damage. Do not look directly into the UV light or look through the
optical system during operation, as this can be harmful to the eyes, even for brief periods, due to
the high intensity of the UV light.
WARNING
UV emitted from this
product. Avoid eye
and skin exposure to
unshielded products.
Possibly hazardous
optical radiation
emitted from this
product. Do not look
at operating lamp.
Eye injury may result.
UV LEDs VIS LEDs