THORLABS M405LP1 User manual



January30,2019
MTN004972‐S01,RevD
www.thorlabs.com/contact

Description
Thorlabs’ M405LP1 Mounted LED has a dominant wavelength of 405 nm and is mounted to the end
of a large Ø57.0 mm heat sink equipped with internal SM1 (1.035"-40) threads for improved heat
dissipation. This LED needs to be supplied with a constant current that must not exceed the
maximum current. For more specifications, please see the table below.
Specifications
Specification Value
Colo
r
UV
Nominal Wavelength 405 nm
Bandwidth (FWHM) 12 nm
Viewing Angle (Full Angle) 120°
Emitter Size 1.4 mm x 1.4 mm
Test Current for Typical LED Powe
r
1400 m
A
Maximum Current (CW) 1400 m
A
Electrical Power (Max) 4830 m
W
Typical Lifetime >10 000 h
Operating Temperature (Non-Condensing) 0 to 40 °C
Storage Temperature -40 to 70 °C
Risk Groupa RG2 – Moderate Risk Group
a. According to the standard IEC 62461:2006, Photobiological Safety of Lamps and Lamp Systems
M405LP1
Symbol Min Typical Max
Peak Wavelengthaλp400 nm 405 nm 410 nm
LED Output PowerbPout 1200 m
W
1700 m
W
-
Forward Voltage VF- 3.45
V
-
Maximum IrradiancecEe- 24.6 µW/mm² -
a. When Driven with a Current of 1000 mA
b. When Driven with the Test Current
c. Measured at a Distance of 200 mm
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 M405LP1
has a unique thermal design that reduces the power decay to a minimum.
The image to the bottom right shows the M405LP1’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 a decay in optical power.
The heat sink of the M405LP1 provides good thermal management, reducing the loss of
power as the LED reaches its equilibrium temperature.
Mounted LED, 405 nm
M405LP1



January30,2019
MTN004972‐S01,RevD
www.thorlabs.com/contact
Performance Plots
.
Drawings
SM1 (Ø1.035"-40)
Internal Thread
6 mm Deep
Ø57.0 mm
(Ø2.24")
4-40 Threads
for 30 mm
Cage System,
4.2 mm Deep,
4 Places
79.4 mm
(3.13")
30.0 mm
(1.18")
68.5 mm
(2.70")
65.7 mm
(2.59")
58.0 mm
(2.28")
3.7 mm
(0.15")
30.0 mm
(1.18")
6.5 mm
(0.26")
Cable
Feedthrough
2 LED Cathode (White)
Connector Pin Out
1 LED Anode (Brown)
3 EEPROM GND (Black)
4 EEPROM I0 (Blue)
ForthebareLED.

 

January30,2019
MTN004972‐S01,RevD
www.thorlabs.com
/
contact
Power Supply
We recommend using Thorlabs’ DC2200 or LEDD1B LED current
drivers (for control of a single LED). Alternatively, the DC4100 or DC4104
current 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 operating 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 M405LP1 is not water resistant and must be protected from adverse weather conditions. To
avoid damage, do not expose it to spray, liquids, or solvents. The M405LP1 does 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 Mounted 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. This product falls under Risk Group RG2 – Moderate Risk Group
in accordance to the standard IEC 62471:2006.
If using this LED in a microscope application as a replacement for mercury vapor lamp, 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 this product is not suitable for household room illumination.
This LED 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
The M405LP1 contains a UV light LED. The LED radiates intense UV light 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 of exposure 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.