Item #	Color (Click for Spectrum)^a	Nominal Wavelength^a,b	Min LED Power Output^a
M365L2	UV	365 nm	190 mW
M385L2	UV	385 nm	270 mW
M405L2	UV	405 nm	410 mW
M420L2	Violet	420 nm	250 mW
M455L2	Royal Blue	455 nm	900 mW
M470L2	Blue	470 nm	830 mW
M490L2	Blue	490 nm	200 mW
M505L2	Cyan	505 nm	335 mW
M530L2	Green	530 nm	220 mW
M565L2	Green Yellow	565nm	100 mW
M590L2	Amber	590 nm	150 mW
M617L2	Orange	617 nm	390 mW
M625L3	Red	625 nm	700 mW
M660L3	Deep Red	660 nm	640 mW
M735L3	Far Red	735 nm	260 mW
M780L2	IR	780 nm	160 mW
M850L3	IR	850 nm	900 mW
M880L2	IR	880 nm	280 mW
M940L2	IR	940 nm	320 mW
M970L2	IR	970 nm	35 mW
M1050L2	IR	1050 nm	50 mW
MWWHL3	Warm White	3000 K	500 mW
MCWHL2	Cold White	6500 K	650 mW

Due to variations in the manufacturing process and operating parameters such as temperature and current, the actual spectral output of any given LED will vary. Output plots and center wavelength specs are only intended to be used as a guideline. Click here to download spectrum data.
The nominal wavelength indicates the wavelength at which the LED appears brightest to the human eye. This may not correspond to the peak wavelength as measured by a spectrograph.

Mounted LED Features

UV, Visible, and IR Versions
Integrated EEPROM Stores LED Operating Parameters
Thermal Properties Optimized for Stable Output Power
Internal SM1 (1.035"-40) Threading for Mounting
4-Pin Female Mating Connector for Custom Power Supplies can be Purchased Separately
Collimation Adapters Compatible with Selected Leica, Nikon, Olympus, and Zeiss Microscopes Available
Versions with the Collimation Adapter Included can be Found Here

Each uncollimated, mounted LED consists of a single high-power LED with multiple emitters that has been mounted to the end of a heat sink. The heat sink has internal SM1 (1.035"-40) threads and has the same external diameter (1.20") as an SM1 lens tube, which makes it easy to integrate with other Thorlabs components. The integrated EEPROM chip in each LED stores information about the LED (e.g., current limit, wavelength, and forward voltage) can be read by Thorlabs' DC2100 and DC4100 LED Controllers. For more information about LED drivers, including the basic LEDD1B driver, see the LED Drivers tab.

Optimized Thermal Management
These high-power mounted LEDs possess good thermal stability properties, eliminating the issue of degradation of optical output power due to increased LED temperature. For more details, please see the Stability tab.

Collimation & Microscope Adapters
Collimation adapters are available that contain an AR-coated aspheric lens and are designed to mate to the epi-illumination ports on Leica DMI, Nikon Eclipse, Nikon Eclipse Ti, Olympus IX/BX, and Zeiss Axioskop microscopes. See below for more details. Additionally, Thorlabs offers mounted LEDs with microscope adapters pre-attached. Please see the Collimated LED web page for more information.

Driver Options
These LEDs can be powered with a Thorlabs LEDD1B, DC2100, DC4100, or DC4104 LED driver (the latter two require the DC4100-HUB). See the LED Drivers tab for compatibility and driver features tab. The LEDD1B is capable of providing LED modulation frequencies up to 5 kHz, while DC2100, DC4100, and DC4104 can modulate the LED at a rate up to 100 kHz. In addition, the DC2100, DC4100, and DC4104 drivers are capable of reading the current limit from the EEPROM chip of the connected LED and automatically adjusting the max current setting to protect the LED.

Item #	Color (Click for Spectrum)^a	Nominal Wavelength^a,b	Minimum LED Power Output^a	Typical LED Power Output^a	Maximum Current (CW)	Forward Voltage	Bandwidth (FWHM)	Typical Lifetime
M365L2	UV	365 nm	190 mW	360 mW	700 mA	4.4 V	7.5 nm	>10,000 h
M385L2	UV	385 nm	270 mW	430 mW	700 mA	4.3 V	10 nm	>10,000 h
M405L2	UV	405 nm	410 mW	760 mW	1000 mA	3.8 V	13 nm	100,000 h
M420L2	Violet	420 nm	250 mW	290 mW	500 mA	3.6 V	12 nm	>10,000 h
M455L2	Royal Blue	455 nm	900 mW	1020 mW	1600 mA	3.5 V	20 nm	>50,000 h
M470L2	Blue	470 nm	830 mW	950 mW	1600 mA	3.5 V	29 nm	>50,000 h
M490L2	Blue	490 nm	200 mW	235 mW	350 mA	3.5 V	27 nm	>10,000 h
M505L2	Cyan	505 nm	335 mW	410 mW	1000 mA	3.3 V	29 nm	>50,000 h
M530L2	Green	530 nm	220 mW	400 mW	1600 mA	3.5 V	31 nm	>50,000 h
M565L2	Green Yellow	565 nm	100 mW	150 mW	500 mA	3.2 V	80 nm	>10,000 h
M590L2	Amber	590 nm	150 mW	190 mW	1600 mA	2.5 V	14 nm	>50,000 h
M617L2	Orange	617 nm	390 mW	570 mW	1600 mA	2.5 V	16 nm	>50,000 h
M625L3	Red	625 nm	700 mW	770 mW	1000 mA	2.2 V	18 nm	100,000 h
M660L3	Deep Red	660 nm	640 mW	700 mW	1200 mA	2.5 V	25 nm	>65,000 h
M735L3	Far Red	735 nm	260 mW	310 mW	1200 mA	2.4 V	35 nm	>65,000 h
M780L3	IR	780 nm	160 mW	420 mW	1000 mA	2.0 V	31 nm	>10,000 h
M850L3	IR	850 nm	900 mW	1100 mW	1000 mA	2.9 V	30 nm	100,000 h
M880L2	IR	880 nm	280 mW	330 mW	1000 mA	1.7 V	50 nm	>10,000 h
M940L2	IR	940 nm	320 mW	460 mW	1000 mA	1.4 V	30 nm	100,000 h
M970L2	IR	970 nm	35 mW	50 mW	600 mA	1.4 V	45 nm	>10,000 h
M1050L2	IR	1050 nm	50 mW	70 mW	700 mA	1.5 V	60 nm	>10,000 h
MWWHL3^c	Warm White	3000 K	500 mW	550 mW	1000 mA	3.1 V	N/A	>50,000 h
MCWHL2^c	Cold White	6500 K	650 mW	700 mW	1600 mA	3.5 V	N/A	>50,000 h

Due to variations in the manufacturing process and operating parameters such as temperature and current, the actual spectral output of any given LED will vary. Output plots and center wavelength specs are only intended to be used as a guideline. Click here to download spectral data.
The nominal wavelength indicates the wavelength at which the LED appears brightest to the human eye. This may not correspond to the peak wavelength as measured by a spectrograph.
The MWWHL3 and MCWHL2 LEDs may not turn off completely when modulated at frequencies above 5 kHz, as the white light is produced by optically stimulating emission from phosphor.

Click to Enlarge

Optimized Thermal Management

The thermal dissipation performance of these mounted LEDs has been optimized for stable power output. The heat sink is directly mounted to the LED mount so as to provide optimal thermal contact. By doing so, the degradation of optical output power that can be attributed to increased LED junction temperature is minimized (see the graph to the right).

Pin	Specification	Color
1	LED Anode	Brown
2	LED Cathode	White
3	EEPROM GND	Black
4	EEPROM IO	Blue

Pin Connection - Male

The diagram to the right shows the male connector of the mounted LED assembly. It is a standard M8 x 1 sensor circular connector. Pins 1 and 2 are the connection to the LED. Pin 3 and 4 are used for the internal EEPROM in these LEDs. If using an LED driver that was not purchased from Thorlabs, be careful that the appropriate connections are made to Pin 1 and Pin 2 and that you do not attempt to drive the LED through the EEPROM pins.

Compatible Drivers	LEDD1B	DC2100^a	DC4100^{a, b, c}	DC4104^{a, b, c}
Click Photos to Enlarge
Max LED Driver Current Output	1.2 A	2.0 A	1.0 A per Channel	1.0 A per Channel
Max Modulation Frequency Using External Input	5 kHz	100 kHz^d	100 kHz^d (Simultaneous Across all Channels)	100 kHz^d (Independently Controlled Channels)
Interface	Analog	USB 2.0	USB 2.0	USB 2.0
Main Driver Features	Very Compact Footprint 60 mm x 73 mm x 104 mm (W x H x D)	Individual Pulse Width Control	4 Channels^c	4 Channels^c
EEPROM Compatible: Reads Out LED Data for LED Settings	-	x	x	x
LCD Display	-	x	x	x

Automatically limits to LEDs max current via EEPROM readout.
LED sources with a forward voltage of greater than 5 V are not compatible with DC4100 and DC4104.
The DC4100 and DC4104 can power and control up to four LEDs simultaneously when used with the DC4100-HUB. The LEDs on this page all require the DC4100-HUB when used with the DC4100 or DC4104.
The MWWHL3 and MCWHL2 LEDs may not turn off completely when modulated at frequencies above 5 kHz, as the white light is produced by optically stimulating emission from phosphor.

Note: The DC3100 driver sold with our Modulated LEDs for FLIM Microscopy kits is not compatible with the LEDs sold on this page.

Collimating the LED

Thorlabs' mounted high-power LEDs can be easily collimated with Ø1" components using the items listed in the table below. Some of the applications of the collimated LEDs include custom imaging systems, microscope illuminators, or projectors. Please be careful to follow proper optics handling procedures (Optic Handling Tutorial) during the following steps.

Item #	Qty	Description
SM1RR	2	Ø1" Retaining Ring
SPW801	1	Adjustable Spanner Wrench^a
ACL2520-A^b, ACL2520-B^b, ACL2520-DG6-A^b, or ACL2520-DG6-B^b	1	AR-Coated Aspheric Condenser Lens (with or without Diffuser)
SM1V05	1	Ø1" Rotating Adjustable Length Lens Tube, 1/2" Long
SM1L03	1	Ø1" Lens Tube, 0.30" Long

While these components are SM1 threaded, we recommend our adjustable spanner wrench due to the steep curvature of the aspheric condenser lens.
-A and -B refer to the type of AR coating on the lens. Any LED with nominal wavelength less than 735 nm would require the -A coating, and any LED with nominal wavelength of 735 nm and above would require the ‑B Coating.

Adjustable length lens tube assembly:

Description: The adjustable length lens tube (SM1V05) allows one to accurately control the exact working distance of the lens while collimating the LED. The SM1-threaded (1.035”-40) SM1V05 comes with a locking nut and a retaining ring. For customers concerned with the homogenity of the beam, the AR-coated aspheric condenser lens with diffuser (ACL2520-DG6-A or ACL2520-DG6-B) is a good option.
Setup: By the end of this step, the lens will rest on top of one retaining ring (SM1RR) and be secured in place by another retaining ring placed on top of it. To begin, use the spanner wrench (SPW801) to turn the included retaining ring in the adjustable length lens tube so that it is closer to the inside lip of the tube. Then, carefully place the lens inside the adjustable length lens tube with the curved side facing away from the male-threaded end of the tube. Finally, secure the lens in place with another retaining ring (SM1RR) using the spanner wrench.

Thread the male end of the SM1L03 lens tube into the female end of the LED and gently tighten it.
Partially thread the male end of the SM1V05 adjustable length lens tube assembly into the female end of the SM1L03-LED assembly.

Step 1(b) Setup for Collimating LED Assembly

Setup for Adjustable Length Lens Tube and Lens
Click to Enlarge

Completed Assembly
Click to Enlarge

Step 3: Complete Assembly of Lens Tubes and LED

Setup for Lens Tubes and LED Assembly
Click to Enlarge

Obtaining a well-collimated beam:

Description: A well-collimated beam has minimal divergence and will not converge at any point in the beam path. Be advised that due to the nature of the output from the LED (high emitter surface area), the beam cannot be perfectly collimated. Please refer to the table below for divergence data.
Setup: Power on the LED and check to see if it is properly collimated. It is easiest to check that the beam is collimated by noting the changes in the beam diameter over a range of about 1” to 2 feet away; then tighten or loosen the adjustable length lens assembly and check again. Do this until the least divergent, non-converging, homogenous beam is obtained. The beam should be somewhat circular in diameter, may have a slightly polygonal shape, and should not be a clear image of the LED itself.
If you see an image of the LED, this means that the lens is not close enough to the LED. Tighten the SM1V05 until the image blurs and becomes homogenous – this is the point of collimation. If the lens needs to be closer to the LED, use only one retaining ring to secure the lens in the SM1V05 so that the lens will rest on the inside lip of the SM1V05 adjustable length lens tube.

Image of the LED
Click to Enlarge

Uncollimated Beam
Click to Enlarge

Collimated Beam
Click to Enlarge

Once the proper collimation position of the lens has been found, loosen the SM1V05 assembly by about ¼ to ½ turn, rotate the external locking nut until it is flush with the edge of the SM1L03 lens tube, and gently tighten both the assembly and the locking nut by ¼ to ½ turn (there should be slight resistance; do not over tighten). This will lock the collimation position in place.

Item #	Color	Nominal Wavelength^a	Optimum Lens to Emitter Distance^b	Half Viewing Angle^c
			Optimum Lens to Emitter Distance^b	+1 mm Out of Focus^d	at Optimum Focusing Distance	-1 mm Out of Focus^d
			M365L2	UV	365 nm	12.7 mm	2.79°	1.32°	3.11°
M385L2	UV	385 nm	12.8 mm	2.68°	1.33°	3.06°
M405L2	UV	405 nm	12.9 mm	2.94°	1.63°	3.06°
M455L2	Royal Blue	455 nm	13.9 mm	4.71°	4.43°	4.90°
M470L2	Blue	470 nm	13.9 mm	4.73°	4.38°	4.93°
M505L2	Cyan	505 nm	13.1 mm	3.99°	1.65°	3.30°
M530L2	Green	530 nm	14.1 mm	4.68°	4.37°	4.84°
M590L2	Amber	590 nm	14.2 mm	4.75°	4.40°	4.86°
M617L2	Orange	617 nm	14.3 mm	4.77°	4.39°	4.83°
M625L3	Red	625 nm	14.2 mm	4.69°	4.41°	4.85°
M660L3	Deep Red	660 nm	13.9 mm	2.84°	1.65°	2.95°
M735L3	Far Red	735 nm	13.6 mm	2.76°	1.65°	2.99°
M780L2	IR	780 nm	13.7 mm	2.70°	1.66°	2.82°
M850L3	IR	850 nm	14.5 mm	3.91°	1.61°	3.17°
M940L2	IR	940 nm	14.6 mm	3.88°	1.60°	3.17°
MCWHL2	Cold White	6500 K	12.2 mm	4.10°	3.48°	4.27°

The specifications listed in the table above are nominal values specified by the LED manufacturer
Optimum distance between the respective mounted LED and the ACL2520 lens used to collimate the beam
Power loss to 1/e² (13.5%)
±1 mm out of focus from Optimum Distance between the respective mounted LED and the ACL2520 lens used to collimate the beam

The divergence data was calculated using Zemax.

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Posted Comments:

Poster: jvigroux

Posted Date: 2012-09-24 10:22:00.0

A response form julien at Thorlabs: Than you for pointing this out. We corrected the presentation on our website so that now the wrench recommended is the SPW801. We will send you a replacement for the lens together with the new case.

Poster: gir

Posted Date: 2012-09-20 16:20:24.0

One other thing: On the application page where it explains how to collimate the LED, it says to use a SPW602 spanner wrench to secure the aspheric lens with one retaining ring on each side. I did this, and the SPW602 carved a circle on the front surface of the lens. Please change this text to instruct people to use a different spanner, so they don't inadvertently scratch their collimating lens.

Poster: gir

Posted Date: 2012-09-19 20:09:14.0

Hi: I have a minor issue to relay about the packaging of the mounted LEDs. I bought an M735L3 late last week and received it today. The plastic case it comes in is not well designed or built. Specifically, the red latch on front broke off while I was trying to figure out how to open the case. And it took two of the black plastic hinge-posts with it, so even when I put the latch back on the case, the case won't stay shut anymore. It seems silly to provide these in a hard shell case if the latch can't withstand a bit of force from a novice case-opener.

Poster: jlow

Posted Date: 2012-08-30 14:23:00.0

Response from Jeremy at Thorlabs: Is your power supply a voltage source or is it a current source? It is highly recommended that you drive these LEDs with a current source instead. If you used a 5V constant voltage source (@ 3A), then you will most likely be injecting 3A of current into this LED and thus destroyed it (max. current for MCWHL2 is 1.6A). Please note that the typical forward voltage for the MCWHL2 is only about 3.5V. It could also be that you have not connected this correctly. I will get in contact with you directly to check on the details on your setup.

Poster: doron.azoury

Posted Date: 2012-08-30 11:16:39.0

Hi, I just recieved the MCWHL2 LED. I control it by a DC power supply. I set the voltage limit to ~5V and tried to rise the current, but the LED doesn't seem to be working. Am I doing something wrong? (the DC supplier can deliver up to 3A)

Poster: jlow

Posted Date: 2012-08-22 08:19:00.0

Response from Jeremy at Thorlabs: We do not have a precise number for this, but based on some old data, the rise and fall times are both on the order of 20ns or so.

Poster: riclambo

Posted Date: 2012-08-20 13:48:19.0

Hello Thorlabs. I am using the 385 nm LED and I need to know its on-off switching time, particularly its off time i.e. when you turn it off, what is the extinction time of the after glow. Even if this is not known precisely, as order of magnitude value would be very useful.

Poster: jvigroux

Posted Date: 2012-07-16 09:20:00.0

A response from Julien at Thorlabs: Dear HongYang, thank you for your inquiry! The curve displayed on our website is aimed at showing the effect of long term thermal stabilization, ie. heat transfer from the LED chip and PCB to the heat sink. Should the thermal exchange channel be poor, it can be that the temperature of the LED will settle at a too high temperature, which would lead to the situation displayed by the curve "LED with poor thermal management". The time scale for this effect is indeed in the seconds range and the curve was plotted accordingly, which can give the impression that the rise time is slow. This rise time is however much shorter than visible on this curve and is typically of a few 10's nanoseconds. The main limitation in this case is the capacitance of the LED and thermal effects as plotted on the aforementioned curve will only be relevant at on a much longer time scale and much lower in magnitude than the capacitance related limitation of the rise time.

Poster: LuHongyang

Posted Date: 2012-07-16 03:08:26.0

The figure in the tab 'Stability' shows that the rise time of these LEDs is several seconds. So does it mean that LED cannot be fully charged when modulated at a high frequency? If so, that will introduce instability to the power in that situation, I suppose. Thanks a lot. Hongyang.

Poster: danielramm

Posted Date: 2012-07-13 14:58:52.0

Do you have information about the angle in which the light is emitted by the uncollimated mounted LED? Iam using the 455nm und the 850nm source.

Poster: jvigroux

Posted Date: 2012-07-13 12:05:00.0

A response from Julien at Thorlabs: Thank you for your inquiry! The radiation characteristics of the LED, which corresponds to the variation of the emitted intensity with the angular departure from the optical axis, is plotted for all our LED's in the mfg spec sheets. Those spec sheet can be downloaded by clicking on the red document icon next to the product number of the LED.

Poster: jvigroux

Posted Date: 2012-05-30 06:45:00.0

A response from Julien at Thorlabs: thank you for your inquiry! the 500mA that are specified by the manufacturer of the LED in the MFG spec sheet apply only for the bare LED. Due to the fact that the LED is mounted on a large heat sink and that the thermal coupling to it is very good, the LED can be used in constant mode at currents up to 700mA.

Poster: andrew_yablon

Posted Date: 2012-05-29 17:24:25.0

What is the practical current limit for running the M1050L2 with the LEDDB1? In one place you have listed this limit as 700 mA and in a different place you have listed it as 500 mA. What is the correct maximum current limit? Thank you, Andrew Yablon andrew_yablon@interfiberanalysis.com

Poster: jvigroux

Posted Date: 2012-04-23 03:56:00.0

A response from Julien at Thorlabs: Thank you for your inquiry. We can provide a Zemax model for the LED chip mounted in this LED. I will contact you directly to send you the information per email.

Poster: tcohen

Posted Date: 2012-04-19 09:17:00.0

Response from Tim at Thorlabs: Thank you for your feedback! We will look into providing this for you and will update you shortly.

Poster: arb

Posted Date: 2012-04-18 15:32:24.0

Can you provide optical power density curves for M940L2? (expressed in W/m2 or W/m2/um)

Poster: jvigroux

Posted Date: 2011-12-06 05:58:00.0

A response from Julien at Thorlabs: Thank you for your inquiry! The approach you intend to use is unfortunately only partially possible. The problem is that the voltage drops across the LEDs will add up when they are connected in series. The specified operating voltage for this LED is 6.8V. As the compliance voltage of the LEDD1B is typically 12V, you will be only able to connect a maximum of two LEDs in series, unless you reduce drastically the current. I will contact you directly to discuss your application and see which approach is the best suited for your application.

Poster: sborn

Posted Date: 2011-12-05 17:29:12.0

I have four M505L1 mounted LEDs that I would like to connect in series with one LEDD1B. How should I wire them? Also, I've removed the wiring from three of the M505L1 mounts, but the LED is still attached.

Poster: bdada

Posted Date: 2011-10-12 12:49:00.0

Response from Buki at Thorlabs: Thank you for your feedback. We will expand the information on our webpage. While we work on updating this page, please contact TechSupport@thorlabs.com for assistance in matching the catalog lens to the collimation adapter.

Poster:

Posted Date: 2011-10-12 09:56:51.0

First bullet on Collimation Adapter is "AR-Coated Aspheric Lens with Low f#" but i couldn't find the f# or NA, this would be nice to know. A link to the lens if it is a catalog lens would also help.

Poster:

Posted Date: 2011-10-12 09:51:12.0

Is there data available on the angular distribution of the output of these LEDs.

Poster: jjurado

Posted Date: 2011-08-17 14:30:00.0

Response from Javier at Thorlabs to dheidbrink: The length of the pins is 5 mm (+/-0.5mm).

Poster: dheidbrink

Posted Date: 2011-08-16 18:05:32.0

How long are the M8 leads on the mounted LEDs?

Poster: jjurado

Posted Date: 2011-07-11 09:04:00.0

Response from Javier at Thorlabs to last poster: Thank you very much for your feedback! We will embark on a project to provide the FWHM values for out mounted LEDs and will post the results on the web shortly. In the meantime, please contact us at techsupport@thorlabs.com if you have any further questions or comments.

Poster: jjurado

Posted Date: 2011-07-08 17:11:00.0

Response from Javier at Thorlabs to last poster: Thank you very much for your feedback. You are correct. A divergence of 3 degrees is a better practical assessment than my previously mentioned 1 degree, which is a best case, theoretical value. I apologize if this information was misleading. Please contact us at techsupport@thorlabs.com if you have any further questions or comments.

Poster:

Posted Date: 2011-07-08 10:11:31.0

*** Response from Javier at Thorlabs to skooi: Thank you very much for contacting us. The divergence of these mounted LEDs is in the order of 1 degree. The large, thick condenser used in this assembly generates a circular output beam, rather than a projection of the LED emitters. This has not been my experience at all. The divergence of our M660L2 is on the order of 3 and it is definitely imaging the LED, and not a uniform circular beam spot.

Poster:

Posted Date: 2011-07-08 10:06:59.0

it would be helpful if you would explicitly state the FWHM of the LED output.

Poster: jvigroux

Posted Date: 2011-05-12 11:40:00.0

A response form Julien at Thorlabs: Dear Sewan, the use of another driver than the Thorlabs driver is of course possible. The simplest design is a DC current source. A pulse controlled approach is of course also possible. I will contact you directly in order to see what are the requirements of your experiment and what you had in mind for the LED control.

Poster: sfan

Posted Date: 2011-05-10 23:15:18.0

Dear Thor Labs Sales Associate, We are planning to purchase the model M505L1 led module. It seems that to provide power to the led unit, a Thor Labs led driver is needed. Can another type of driver be used to provide power to the led, for example, through a pulse controlled MOSFET transistor ? Please advice as to the above. Thank you for your help. Sewan Fan Hartnell College Salinas, CA

Poster: jjurado

Posted Date: 2011-04-04 17:38:00.0

Response from Javier at Thorlabs to skooi: Thank you very much for contacting us. The divergence of these mounted LEDs is in the order of 1 degree. The large, thick condenser used in this assembly generates a circular output beam, rather than a projection of the LED emitters.

Poster: skooi

Posted Date: 2011-04-04 12:45:09.0

How collimated should we expect to be able to make the light out of these LEDs? If we purchase one of the collimation lenses, does the light collimate as a circular beam or just as the square shape of the LED?

Poster: jjurado

Posted Date: 2011-02-18 17:44:00.0

Response from Javier at Thorlabs to denis.battarel: Thank you for submitting your inquiry. There are a couple of options. You can use the LEDD1B driver, which has a maximum output of 1200 mA, or you can opt for the DC2100, whose maximum output current is 2000 mA. Both of these drivers can be operated in constant current mode, trigger mode, and modulation mode. Regarding the condenser lens, we would recommend using the ACL2520. Its diameter is 25 mm, so it is compatible with our SM1 lens tubes. LEDD1B http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=2616&pn=LEDD1B#3018 DC2100 http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=4003&pn=DC2100 ACL2520 http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=3835&pn=ACL2520

Poster: denis.battarel

Posted Date: 2011-02-18 15:01:03.0

I would like to use the LCWHL2 white light LED with SM1 tube but what power supply can I use? I need maximum light flux, so the 1600mA are needed. I do not need to modulate the light. I have seen on your web site that previous driver going to 1200mW is obsolete but have not seen the new driver. What condenser lens would you recommend? I need it to fit in a SM1 tube.

Poster: Thorlabs

Posted Date: 2010-10-14 16:29:12.0

Response from Javier at Thorlabs to godina: we are discussing internally the development of a mounted 560 nm LED. I will contact you directly with more details.

Poster: godina

Posted Date: 2010-10-14 10:28:30.0

Are you guys coming out with an M560L2? (mounted LED, 560nm pure green?

Poster: Thorlabs

Posted Date: 2010-09-02 13:48:38.0

Response from Javier at Thorlabs to mjg: we offer a version of the M365L2 mounted LED which includes a condenser lens and a mounting adapter for Olympus BX & IX microscopes. The part number is M365L2-C1: http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=2615

Poster: mjg

Posted Date: 2010-09-01 18:00:01.0

Hello, Im looking to mount this unit onto the condenser column of an Olympus IX71 (i.e. to use it as a replacement for a white light source). Can you suggest a mounting solution? Thank you.

Poster: apalmentieri

Posted Date: 2010-03-04 10:03:37.0

A response from Adam at Thorlabs to jrguest: The size of the LED on this device is 1x1mm^2. We will contact you directly so we can clarification on the optical invariant that you are looking for.

Poster: jrguest

Posted Date: 2010-03-03 19:52:14.0

What is the size of the LED or LEDs on the device? I would like to know the optical invariant of this source.

Poster: apalmentieri

Posted Date: 2010-02-17 08:48:10.0

A response from Adam at Thorlabs to Michael: It is possible to get an LED that outputs 385nm with a higher output power. I will contact you directly to get more information about your application.

Poster: michael.spurr

Posted Date: 2010-02-16 06:25:57.0

Would it be possible to get an M385L1 that outputs a similar power (or as close as possible) to the M405L1? Thanks.

Poster: apalmentieri

Posted Date: 2010-01-29 11:07:15.0

A response from Adam at Thorlabs to Michael: Thanks for the clarification. Just to clarify my previous statement, if you over drive the current beyond 1A, you will damage the LED beyond repair.

Poster: michael.spurr

Posted Date: 2010-01-29 06:53:11.0

A response to Adam at Thorlabs: Sorry, I actually meant 1A (silly typo). The LED is currently being run at a constant voltage of just under 5V, so it is the current that I am concerned with. Thanks for the reply.

Poster: apalmentieri

Posted Date: 2010-01-27 09:18:16.0

A response from Adam at Thorlabs to Michael: Typically LEDs are run at 5V or 12V. Using a voltage higher than 1V will not damage the LED if you can limit the amount of current reaching the device. LEDs are current run devices and will be damaged beyond repair if drive them with too much current. The M405L1 cannot be driven above 1000mA.

Poster: michael.spurr

Posted Date: 2010-01-27 03:50:48.0

Can you tell me the risks associated with over-driving the M405L1 LED above 1V? What are the likely consequences in terms of output power and potential damage and how far above 1V would you have to go? Thanks.

Poster: klee

Posted Date: 2009-10-05 16:14:12.0

A response from Ken at Thorlabs: Yes, these mounted LEDs are also plug and play compatible with the new DC2100.

Poster: acable

Posted Date: 2009-10-03 15:43:41.0

Is this series of mounted LEDs plug and play compatible with the DC2100 driver.

Poster: javier

Posted Date: 2009-05-06 12:56:23.0

Response from Javier at Thorlabs to booth: we currently do not offer a mounted LED with EEPROM in the 900-1500 nm range, but we can quote a special operating at 940 nm

Poster: booth

Posted Date: 2009-05-05 16:27:53.0

I would like a product like the M850L1 LED source, but with longer wavelength. Something >900 and <1500nm.

Poster: Laurie

Posted Date: 2008-10-31 09:50:24.0

Response from Laurie at Thorlabs to atashtoush: To modulate the MBLED you will need the LEDD1 T-Cube LED driver and a TPS001 15 V power supply. You will need to provide your own signal generator with the following requirements: Minimum Strobe Pulse Width: 50 µs Strobe Turn-On / Turn-Off Time: <25 µs. The maximum flash rate obtainable with the LEDD1 with full 100% modulation will be around 3 kHz with a maximum strobe effect up to 10 kHz. If you need to modulate at higher rates you would need to consider a laser driver. Depending on the driver, you can indirectly modulate to about 250 kHz. Above that value you need to RF modulation directly into the LED anode.

Poster: atashtoush

Posted Date: 2008-10-30 15:13:41.0

Hi, can you tell me how can we modulate this led using square wave because. what voltage and offset ..... thanks

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