Click to Enlarge
Distal End of the OSL1 Fiber Bundle
The stacked values represent the maximum and minimum for each dimension.

Features

High Output 150 W Lamp (3200 K Color Temp)
1000:1 Variable Intensity Control (0-100%)
Rugged Design with Thermal Switch & Safety Cutoff
Includes: Lamp, Bulb, 36" (91 cm), Ø1/4" Fiber Bundle & Adapter Chuck

Our 150 W halogen OSL light source is designed to deliver strong, cool light for microscopy and lab applications. The unit features a 150 W halogen lamp with a 1000:1 exponentially variable control. Each unit is shipped complete with a Ø1/4", 36" (91 cm) long fiber bundle and a fiber adapter chuck. The lamp is available in either 110 V (OSL1) or 230 V (OSL1-EC) CE compliant versions.

To mount the fiber, we recommend using our AD8F mounting adapter, which allows easy integration of the fiber bundle into any of our SM1 compatible mounting hardware. This unit is also compatible with our SMA Multimode Fiber Bundles with the use of the OSL1-SMA mounting adapter (sold below). In addition, Thorlabs also offers intense white light LED arrays, single emitter LEDs, collimated multi-emitter LEDs, and uncollimated multi-emitter LEDs.

Specifications
Input Voltage	110-120 VAC or 220-240 VAC, 180 W Max
Light Output	40,000 Foot-Candles (~430,000 lx)
Lamp Adjustment Range	1000:1 (0 to 100%)
Color Temperature	3200 K with standard EKE Lamp at Max Intensity
Lamp Life	250-10,000 Hours
Operating Temperature	0-40 °C
Humidty Range	0-80% Non Condensing
Weight (Light Source w/o Fiber bundle)	7.5 lbs (3.4 kg)

The emission spectra shown for the OSL1 halogen lamp was measured for a single halogen bulb operating at maximum power. Note, the fiber bundle included with the OSL1 was not used during the measurement of the emission spectra.

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Posted Comments:

Poster: tcohen

Posted Date: 2012-08-21 13:44:00.0

Response from Tim at Thorlabs: The output of this source is very high intensity and divergent. If prepared for the losses one will have during coupling, this can be done with aspheric condenser lenses or achromats. A general setup is provided below by Javier. As an alternative, we offer the OSL1-SMA which can directly mate the OSL1 to an SMA 905 connectorized fiber bundle. I will contact you directly to go over these options with you.

Poster: czl0579

Posted Date: 2012-08-20 12:52:57.0

Do you have some suggestions that how to couple this light source into a multimode fiber (M14L02)? We lost the original fiber bundle and now use a light guide instead. Also, do you have some suggestions to couple the source to it? Thanks.

Poster: anqi.zhang

Posted Date: 2012-08-17 10:00:00.0

Any suggestion regarding how to couple this light source into a 50 micron core fiber?

Poster: tcohen

Posted Date: 2012-04-16 10:39:00.0

Response from Tim at Thorlabs: Thank you for your feedback! We are constantly looking for ways to improve our products and I will discuss your suggestion with our production team.

Poster:

Posted Date: 2012-04-12 15:47:27.0

would be cool if there was an inexpensive way to control this remotely. Only other option I can find is your $2k high power source.

Poster: lmorgus

Posted Date: 2011-03-31 14:41:00.0

Response from Laurie at Thorlabs to the anonymous poster: Thank you for taking the time to let us know that one of our links is broken. We will fixed it right away and apologize for the inconvenience.

Poster:

Posted Date: 2011-03-31 13:58:58.0

Catalog page PDF download link for the OSL1 is broken

Poster: Thorlabs

Posted Date: 2010-11-08 17:48:28.0

Response from Javier at Thorlabs to last poster: we are currently gathering this information for you. Please contact us at techsupport@thorlabs.com so that we can can keep you updated on this request.

Poster:

Posted Date: 2010-11-08 12:29:06.0

Is it possible to label the spectral density of the plot on the overview tab with units of uW/nm, as is done for the HPLS-30-04?

Poster: Thorlabs

Posted Date: 2010-09-10 15:45:00.0

Response from Javier at Thorlabs to yuj210: I will contact you shortly.

Poster: yuj210

Posted Date: 2010-09-09 13:53:14.0

Dear Javier, would you reply my following inquiries ASAP? I sent mails, left voice message also. Thanks.

Poster: Thorlabs

Posted Date: 2010-09-08 19:10:19.0

Response from Javier at Thorlabs to yuj210: Regarding the OSL1, the output from the fiber is very divergent (NA in the range of 0.5-0.6), so it is very difficult to achieve a well collimated output. In order to collect the output from the fiber tip, I would recommend using one of our aspheric condenser lenses. A good candidate is the ACL5040: http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=3835 This lens has a diameter of 50 mm, a focal length of 40 mm, and a numerical aperture of 0.55. This lens can be mounted onto the LMR2 mount: http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=1433&pn=LMR2 Now, in order to focus the output from the OSL1 into multimode fiber, you will most likely need to reduce the size of the beam. A 20X beam expander used as a reducer may be suitable: http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=1580 I will contact you directly to discuss the details of your application, including the fiber specifications.

Poster: yuj210

Posted Date: 2010-09-08 00:56:30.0

Im planning an experiment using this OSL1. Let me ask something. If I dont care money much, what would be the best choice to get collimated beam with OSL1. Im thinking of chromatic lens, AC127-019-A-ML . I need your comment and recommend also. Thanks.

Poster: Thorlabs

Posted Date: 2010-08-06 11:45:02.0

Response from Javier at Thorlabs to last poster: Thank you for your feedback. We have added the light output spec in lux.

Poster:

Posted Date: 2010-08-06 11:11:35.0

Who uses "foot candles" these days, try to make to the modern world

Poster: Adam

Posted Date: 2010-05-12 16:10:04.0

A response from Adam at Thorlabs to dellapir: We took one from stock and measured the power. The minimum power is 50mW and the maximum power is 1.8W. The change in the power is exponetial as you rotate the potentiometer.

Poster: dellapir

Posted Date: 2010-05-12 12:46:23.0

Mr./Mrs: We´ve bought your OSL1-EC lamp with optical fiber. As you know it is possible to change the intensity of the lamp, and this is the information that we need. Can you tell us what the minimum and maximum intensity emitted by the lamp? The change , which is possible using the potentiometer marked on the lamp, is a linear or exponential? Thank you!!! Best regards. Monica Della Pirriera MNT group Univeridad Poltecnica de Cataluña

Poster: apalmentieri

Posted Date: 2009-12-18 11:37:15.0

A response from Adam at Thorlabs: I would like to discuss this further with you. I will send you an email to try and find out the exact parameters that you are looking for.

Poster: juanpamunoz

Posted Date: 2009-12-18 09:23:20.0

Hi, i´m using your lamp in the "Opto Electronic Lab of UNIVERSIDAD DE CONCEPCION, CHILE", and i would like to know more specifications about the "High-Intensity Fiber Light Source OSL1-EC", like SNR coefficient and another kind of parameters. Thus, i could add more accuracy to my thesis measurements. Thanks a lot. Juan Pablo Muñoz Carmona. Thesis Student. Civil Engineering Electronics. Universidad de Concepción.

Poster: jens

Posted Date: 2009-06-09 08:12:28.0

A reply from Jens at Thorlabs: coupling of this 150W light source into a single mode fiber is virtually impossible. We might be able to offer a different solution if we get additional information regarding your setup. I will contact you directly for that.

Poster:

Posted Date: 2009-06-09 04:21:03.0

what adapter do i use to couple the SMF(core 9um)?

Poster: jens

Posted Date: 2009-05-18 17:45:55.0

An answer from Jens at Thorlabs: the output power at 1100nm is virtually zero. We probably can offer a custom solution where we would replace the light bulb inside the unit. We will contact you with a quotation directly. As for the collimation you could try using a pinhole but if you need better collimation since you may want to guide the light over a longer distance a plano-concave singlet lens such as our BK7 lens LA1540 can be used. The lens will need to be place 15mm in front of the output. The output fiber bundle can be hold in place using our AD12F adapter. Using that adapter the fiber end can be mounted in a cage system using cage plate CP02. We will contact you directly as soon as possible.

Poster: nutik

Posted Date: 2009-05-18 16:55:54.0

Do you have any accessories for this light source to have a parallel output beam or a focused beam? What is the intensity of the output light at 1100nm?

Poster: Tyler

Posted Date: 2008-08-14 10:54:17.0

A response from Tyler at Thorlabs to sai: The blackbody radiation equation shown on the specs tab is really only intended to give the user of an OSL1 an idea of the spectral distribution of the light emitted from the halogen lamp. In reality, the lamp is not a perfect blackbody source and certainly the glass bulb and MM fiber bundle will have some absorption profile that will modify the emitted intensity versus wavelength even further from an ideal blackbody source.

Poster: sai

Posted Date: 2008-08-04 11:03:38.0

I have a question regarding the formula you have used to calculate the intensity in the "specs" tab. Will this give me power density (Watts per cubic meter)? If yes, can you please tell me how to find the intensity in terms of Power/ Surface area (Watts per sq meter)? Thanks!

Poster: Tyler

Posted Date: 2008-08-01 13:58:59.0

A response from Tyler at Thorlabs to smitachat2001: Thank you for your interest in the OSL1. There is no specific reason why the OSL1 halogen lamp cannot be left on continuously. The housing will get quite warm over time but if the unit is in a room temperature environment and the airflow to the cooling fan is not blocked the lamp will function properly. The one drawback to using the lamp continuously is that the hotter the lamp is the shorter its lifetime so for continuous use it might be wise to improve the cooling of the lamp.

Poster: smitachat2001

Posted Date: 2008-07-30 21:20:50.0

It is certainly usefull product but it looks as if they are not meant to be used for 24 hours, which makes them restricted for many lab purposes.

Poster: Tyler

Posted Date: 2008-06-26 16:29:35.0

A response from Tyler at Thorlabs to leosis: I have added a plot of the theoretical emission intensity as a function of wavelength to the "Specs" tab. The light will appear white, but as you can see from the plot, the emission intensity will peak near 910 nm when the unit is at maximum power.

Poster: leosis

Posted Date: 2008-06-23 07:20:25.0

i want to know the operating wavelengt of this product. please, reply to me about this information.

Poster: Tyler

Posted Date: 2008-06-05 12:16:30.0

A response from Tyler at Thorlabs: The divergence angle of the fiber bundle is not a controlled specification and as a result cannot be guaranteed. However, I tested a OSL1 and measured a divergence angle of 33 degrees (This was determined by measuring the spot diameter at several distances from the fiber bundle tip and fitting the data to a straight line. The inverse tangent of the slope of the fit line was 33 degrees.)

Poster:

Posted Date: 2008-06-05 10:13:02.0

Whats the divergence angle of the fiber bundle at the output tip?

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