Thorlabs Inc.
Visit the Broadband Halogen Fiber Optic Illuminators page for pricing and availability information

Broadband Halogen Fiber Optic Illuminators

  • 150 W High-Output Halogen Lamps with Variable Intensity Control
  • 91 cm (36") Long Fiber Bundle Included
  • Optional Accessories Include Gooseneck Fiber Bundles,
    Microscope Ring Illuminator, and Collimation Packages

OSL2COL

Collimation Package (Shown Attached to OSL2YFB Fiber Bundle)

FRI61F50

Microscope Ring Illuminator

Application Idea

OSL2YFB Gooseneck Y-Bundle with the OSL2 Light Source

High-Intensity Fiber-Coupled Illuminator, Fiber Bundle Included

OSL2

Hide Overview

OVERVIEW

OSL2 and OSL2IR Spectra
Click to Enlarge
Click to Download Raw Data
These spectra represent the output of the OSL2B bulb installed in the OSL2 light source (blue line) and the OSL2BIR bulb installed in the OSL2IR light source (red line). The OSL2B bulb has an integrated hot mirror to block most IR light. The OSL2BIR bulb has an aluminum-coated reflector for enhanced performance in the infrared. These spectra are taken with the included fiber bundle and account for attenuation within the fiber bundle.
Accessories

Features

  • High-Output 150 W Bulbs with 3200 K Color Temperature
    • OSL2 Comes with Pre-Installed OSL2B Bulb with Integrated Hot Mirror to Block Most IR Light
    • OSL2IR Comes with Pre-Installed OSL2BIR Bulb with Aluminum-Coated Reflector for Enhanced IR Performance
  • DC-Coupled Illuminators for Stable, Consistent Light Output
  • Variable Intensity Control via Front Panel Knob (0% to 100%)
  • Rugged Design with Thermal Safety Cutoff
  • 91 cm (36") Long, Ø6.4 mm (Ø0.25") Core Fiber Bundle Included
  • Internally SM1-Threaded (1.035"-40) Output Port

Thorlabs' OSL2 and OSL2IR High-Intensity Fiber Light Sources deliver white light for brightfield microscopy, laboratory, and illumination applications. The output illumination intensity is exponentially variable from 0 to 100% using a knob on the front of the unit. The 150 W EKE halogen bulbs have a 3200 K color temperature (see the graph to the right) and are user replaceable with optional bulbs sold below. These portable fiber-coupled light sources are compatible with 100 to 120 VAC as well as 220 to 240 VAC and includes a location-specific power cord.

Fiber Light Source Tip Mounting
Click to Enlarge
OSL2 Fiber Bundle Tip Post-Mounted Using AD8F Mounting Adapter and LMR1 Fixed Mount

A 91 cm (36") long fiber bundle with a Ø6.4 mm (Ø0.25") effective core is included with the OSL2 and OSL2IR light sources. To adapt the fiber bundle output to an optomechanical setup, we recommend using our AD8F mounting adapter (see photo to the left), which provides external SM1 (1.035"-40) threading for easy integration with any of our SM1-threaded components. In particular, this adapter can be used to connect the OSL2 or OSL2IR to a Cerna® microscope for both epi-illumination and trans-illumination; see the Use with Cerna tab for details.

The fiber illuminator's output port also has internal, 3.5 mm deep SM1 threads. The unit is shipped with a fiber bundle adapter installed in these threads. By removing the fiber bundle mounting adapter from the output port, standard fiber connector adapters (sold below) and other SM1-threaded components can be attached to the light source.

Accessories
We offer collimation and focusing packages for the end of the fiber bundle, single-output fiber bundles, a bifurcated fiber Y-bundle with two goosenecked legs, and a microscope ring illuminator. The single-output fiber bundles are available in two varieties: a metal-jacketed replacement bundle for the included bundle and a gooseneck bundle for increased rigidity and easy manual positioning. Longer length fiber bundles are also available as a custom order by contacting Tech Support.

Four replacement bulbs for use with our high-intensity fiber light sources are available below, along with their emission spectra. The OSL2B and OSL1B bulbs are identical to the bulbs used in the OSL2 and the former OSL1 light sources, respectively, and emit in the visible spectrum. The OSL2B2 bulb also emits in the visible spectrum and provides greater power output at the expense of bulb lifetime. Lastly, the OSL2BIR bulb is used in the OSL2IR light source and offers enhanced emission in the near infrared through the use of an aluminum-coated reflector. Further details on compatible bulbs are also provided on the Specs tab.

If a higher color temperature is desired, our color-balancing filters can be used to attenuate red light from the OSL2 light source while passing blue light. This results in a beam with a higher color temperature and lower total power.


Hide Specs

SPECS

OSL2 and OSL2IR Spectra
Click to Enlarge
Click to Download Raw Data
These spectra represent the output of the OSL2B bulb installed in the OSL2 light source (blue line) and the OSL2BIR bulb installed in the OSL2IR light source (red line). The OSL2B bulb has an integrated hot mirror to block most IR light. The OSL2BIR bulb has an aluminum-coated reflector for enhanced performance in the infrared. These spectra are taken with the included fiber bundle and the attenuation within the fiber bundle is accounted for.
Distal End of the OSL2 Fiber Bundle
Click to Enlarge
Output End of the Included Fiber Bundle
Item # OSL2a OSL2IRa
Light Source Specs
Power at Fiber Tip 1.4 W at Maximum Bulb Intensity 3.8 W at Maximum Bulb Intensity
Color Temperature of Included Bulb 3200 K at Maximum Bulb Intensity
Operating Wavelength Range 400 - 1600 nm (Typical) 400 - 1750 nm (Typical)
Color Rendering Index (CRI) 90%
Intensity Adjustment Range 0 to 100%
Time to Full Brightness 4 s Typical, 7 s Maximum
Output Power Stability ±0.5% over 8 Hours ±0.8% over 8 Hours
Lamp Lifetime 1000 Hours to 50% Brightness 200 Hours to 50% Brightness
Included Bulbb OSL2B (150 W, 3200 K, EKE/10H) OSL2BIR (150 W, 3200 K,
Enhanced IR, EKE/AL)
Other Compatible Bulb Typesb OSL2B2 (150 W, 3400 K, EJV)
OSL2BIR (150 W, 3200 K,
Enhanced IR, EKE/AL)
OSL1B (150 W, 3250 K, EKE)		 OSL2B (150 W, 3200 K, EKE/10H)
OSL2B2 (150 W, 3400 K, EJV)
OSL1B (150 W, 3250 K, EKE)
Input Voltage 100 - 120 VAC, 50/60 Hz
200 - 240 VAC, 50/60 Hz
Power Consumption 200 W at Maximum Bulb Intensity
Fuse Type 3 A, 250 V, 5 x 20 mm
Operating Temperaturec -20 to 40 °C (-4 to 104 °F)
Humidity Range 0 - 80%, Non-Condensing
Weight 2.9 lbs (1.3 kg)
Fiber Bundle Specs
Fiber Bundle Lengthd 91 cm (36")
Fiber Bundle NA 0.57
Fiber Bundle Effective Core Diameter Ø6.4 mm (Ø0.25")
Operating Wavelength Rangee 390 - 1750 nm
Fiber Bundle Attenuation <0.6 dB/m at 940 nm
Number of Fibers 6718 (Calculated)
Fiber Core Diameterf 50 µm
Fiber Cladding Diameterf 52.5 µm
Bundle Minimum Bend Radius 100 mm
Operating Temperaturec 0 to 180 °C (32 to 356 °F)
  • This table contains the specifications of the OSL2 and OSL2IR light sources and the included fiber bundles. For details about
    our line of accessories, please see below.
  • These bulbs may be purchased separately below.
  • The combined operating temperature range of the light source and fiber bundle is 0 to 40 °C.
  • Longer length fiber bundles are available as a custom order. Contact Tech Support to order.
  • Defined by the wavelength range in which the transmission of the fiber is higher than 10%.
  • Dimensions of the individual fibers within the bundle.
OSL2 and OSL2IR Long-Term Stability
Click to Enlarge
OSL2 and OSL2IR Short-Term Stability
Click to Enlarge

Click to Download Raw Data
The typical long-term and short-term output intensity stability of the OSL2 and OSL2IR are shown above.


Hide Use with Cerna

USE WITH CERNA

Components for Cerna® Compatibility
Epi-Illumination
WFA2001 Epi-Illuminator Module
AD8F Ø8 mm to SM1 (1.035"-40) Adapter
Trans-Illumination
WFA1000 Trans-Illumination Module or
WFA1100 Dodt Gradient Contrast Module
AD8F Ø8 mm to SM1 Adapter
CP33(/M) SM1-Threaded 30 mm Cage Plate
(Qty. 2)
LA1134 or LA1134-A Ø1" Plano-Convex Lensa
(f = 60.0 mm)
ER3-P4 3" Cage Rods
  • The LA1134 is uncoated, while the LA1134-A features an AR coating with <0.5% average reflectance per surface over the 350 - 700 nm range.

Using the Broadband Halogen Lamp in Cerna® Microscope Systems

The OSL2 high-intensity light source provides effective broad-spectrum illumination for brightfield and reflected light microscopy. It can be used in both epi-illumination and trans-illumination configurations within the Cerna microscopy platform.

Installation on Epi-Illuminator Module

The OSL2 is compatible with a Cerna microscope via the single-cube epi-illuminator module (Item # WFA2001), which contains anti-reflective (AR)-coated optics with <0.5% average reflectance per surface over the 350 - 700 nm wavelength range. The halogen lamp fiber bundle and epi-illuminator module are connected together by an SM1-threaded (1.035"-40) adapter (Item # AD8F). First thread the adapter onto the epi-illuminator module, then secure the fiber bundle with the nylon-tipped setscrews on the adapter [1/16" (1.5 mm) hex]. The epi-illuminator module accepts an uncollimated light source, so no collimation package is necessary.

Click to Enlarge
Thread the AD8F adapter into the WFA2001 epi-illuminator module.
Click to Enlarge
Secure the fiber bundle with setscrews on the AD8F (1/16" [1.5 mm] hex).


Installation on Trans-Illumination Module

Because the WFA1000 and WFA1100 trans-illumination modules need a Ø1" collimated light source secured to a 30 mm cage system to provide even illumination, the emitted beam from the OSL2 must be collimated by a plano-convex lens with a focal length of 60.0 mm. We recommend using either the LA1134 or LA1134-A N-BK7 plano-convex lens. The LA1134 lens is uncoated and will provide relatively even transmission of the entire OSL2 spectrum; the LA1134-A features an AR coating that provides improved transmission in the 350 - 700 nm range but worse transmission above 700 nm. See the Coatings Tutorial for details. A slightly longer focal length lens can be substituted, but will result in dimmer illumination at the sample plane.

To assemble the cage system for the OSL2, first mount the lens onto a SM1 (1.035"-40) threaded 30 mm cage plate (Item # CP33(/M)) using the included retaining rings (Item # SM1RR). The other cage plate secures the Ø8 mm to SM1 adapter (Item # AD8F); utilize an additional retaining ring to set the adapter at a particular position. Attach the cage rods (Item # ER3-P4) to the trans-illumination module by removing the dust cover on the side of the module with a 1.5 mm hex, then locking the cage rods into place using the exposed side-locking 4-40 setscrews (0.05" hex). Once the cage rods are secure, slide the cage plate with the optic onto the rods so that the convex side of the lens faces the trans-illumination module. This is then followed by the cage plate with the AD8F adapter. The cage plates are secured to the cage rods using side-locking 4-40 setscrews. Once the assembly is secure, mount the tip of the fiber bundle onto the end of the collimation package using two 6-32 setscrews [1/16" (1.5 mm) hex]. See the diagram and images below for a visual depiction of this assembly.

Click to Enlarge
Collimating the OSL2
Click to Enlarge
Cage System Components Necessary for Collimation
Click to Enlarge
Secure the cage assembly using the side-locking 4-40 setscrews on the trans-illumination module.

The cage plates should be separated such that the distance between the fiber tip and the plano side of the lens is 2.23" (56.7 mm), the back focal length of the lens. The cage system provides easy adjustment of the distance between the cage plates while maintaining alignment. Please contact Technical Support if you need further assistance with this installation.


Hide Lamp Selection Guide

LAMP SELECTION GUIDE

Below is a selection guide for all of our white-light, broadband, lamp-based light sources. In addition to these sources, Thorlabs also offers unmounted white-light LEDs, white-light mounted LEDs, white-light fiber-coupled LEDs, and high-powered, white-light Solis® LEDs.

Broadband Light Source Selection Guide
Item # (Click to
Enlarge;
Not to Scale)		 Emitter Type Wavelength
Range
(Click for Plot)		 Output Coupling Output Power Lamp
Electrical
Power		 Color
Temperature		 Lamp
Lifetime		 Replacement
Lamp
SLS204 Deuterium 200 - 700 nm Free Space or
Fiber Coupled (SMA)		 2 mWa
0.1 mWb
(Typ.)		 30 W N/A 2000 hc SLS254B
SLS205 Xenon Arc 240 - 1200 nm Free Space or
Fiber Coupled (SMA)		 290 mWa
5 mWd
(Typ.)		 75 W 5800 Ka
5400 Kd		 2000 hc SLS255B
SLS401 Xenon Arc 240 - 2400 nm Free Spacee >1.3 Wa 150 W 5800 K 2000 hc SLS401Bf
or SLS402B
SLS402 Mercury-Xenon Arc 240 - 2400 nm Free Spacee >1.3 Wa 150 W 6000 K 2000 hc SLS401B
or SLS402Bf
SLS302 Quartz
Tungsten-Halogen		 360 - 2500 nm Free Spacee >10 Wa 150 W 3400 K 1000 hg SLS301B
SLS201L(/M) Quartz
Tungsten-Halogen		 360 - 2600 nm Free Spacee or
Fiber Coupled (SMA)		 500 mWa
10 mWh		 9 W 2796 K 10 000 h SLS251
SLS301 Quartz
Tungsten-Halogen		 360 - 3800 nm Free Spacee >1.6 Wa 150 W 3400 K 1000 hg SLS301B
SLS603 Xenon Arc 380 - 780 nm Ø3 mm
Liquid Light Guide		 >7 Wh 300 W 6000 Ki 1000 hc SLS600B
SLS605 Xenon Arc 380 - 780 nm Ø5 mm
Liquid Light Guide		 >15 Wh 300 W 6000 Ki 1000 hc SLS600B
OSL2 Tungsten-Halogen 400 - 1600 nm
(Typical)		 Fiber Bundle 1.4 Wk 150 W 3200 K 1000 hc OSL2Bf,
OSL2B2,
or OSL2BIR
OSL2IR Tungsten-Halogen 400 - 1750 nm
(Typical)		 Fiber Bundle 3.8 Wk 150 W 3200 K 200 hc OSL2B,
OSL2B2,
or OSL2BIRf
QTH10(/M) Quartz
Tungsten-Halogen		 400 - 2200 nm Free Space 50 mW (Typ.) 10 W 2800 Kl (Typ.) 2000 h QTH10B
SLS203F(/M) Silicon Carbide Globar 500 nm - 9 µm Free Spacee or
Fiber Coupled (SMA)		 1.8 Wa 24 W 1500 K 10 000 h SLS253
SLS303 Silicon Nitride Globar 550 nm - 15 µm Free Space 4.5 Wa 70 W 1200 K 5000 hg SLS303B
  • Free-space optical power measured without adapters at the beginning of lamp lifetime.
  • Measured with Thorlabs' M114L01 solarization-resistant patch cable at beginning of lamp lifetime.
  • Operation time before the maximum optical output power of the lamp reaches 50% of its original output.
  • Measured with Thorlabs' M111L01 solarization-resistant patch cable at beginning of lamp lifetime.
  • Adapters are available separately to couple the free-space output into liquid light guides (LLGs).
  • This lamp is identical to the original lamp that comes with the light source.
  • Operation time before the controller cannot stabilize the output power of the lamp.
  • Measured at the liquid light guide tip at the beginning of lamp lifetime.
  • Prior to LLG
  • Fiber-coupled optical power, measured with included fiber patch cable at beginning of lamp lifetime.
  • Power at Fiber Tip at Maximum Lamp Intensity
  • Color temperature will vary from unit to unit.

Hide Fiber-Coupled Light Sources

Fiber-Coupled Light Sources

  • 150 W, 3200 K Halogen Bulbs
    • OSL2 Comes with Pre-Installed OSL2B Bulb with Integrated Hot Mirror to Block Most IR Light
    • OSL2IR Comes with Pre-Installed OSL2BIR Bulb with Aluminum-Coated Reflector for Enhanced IR Performance
  • Continuously Variable Output Power via Front Panel Knob
  • SM1-Threaded Output Port with 91 cm (36") Long Fiber Bundle

Thorlabs' High-Intensity Fiber-Coupled Light Sources are designed for illumination of brightfield microscopy setups and general-purpose laboratory use. A removable, 91 cm (36") long, Ø6.4 mm (Ø0.25") effective core fiber bundle is included with each light source. Replacement bundles are available below. Additionally, each light source has an internally SM1-threaded (1.035"-40) output port for custom integration into optomechanical setups.

These light sources have a built-in protection mechanism to prevent the unit from overheating and to turn off the lamp when the access door is opened. The LED indicator on the front panel is green during normal operation. If the unit overheats, power to the lamp is cut off and the LED turns red. If the access door is opened during normal operation, power to the lamp and the LED are cut off. 

The OSL2 comes with a pre-installed OSL2B bulb that has an integrated hot mirror that blocks the majority of the IR light and has a typical wavelength range of 400 - 1600 nm. The OSL2IR comes with the OSL2BIR bulb which provides enhanced output in the near-IR due to the aluminum-coated reflector and lack of integrated hot mirror; it has a typical wavelength range of 400 - 1750 nm. Please see the Specs tab for more details.

The OSL2 and OSL2IR have built-in universal power supplies and include a location-specific detachable power cord. Additional user-replaceable light bulbs can be purchased below. To order the OSL2 or OSL2IR without the included fiber bundle, or for general custom order inquiries, please contact Tech Support.


Part Number
Description
Price
Availability
OSL2
High-Intensity Fiber-Coupled Illuminator with 91 cm (36") Long Fiber Bundle
$1,086.94
Today
OSL2IR
High-Intensity Fiber-Coupled Illuminator with IR-Enhanced Output and 91 cm (36") Long Fiber Bundle
$1,103.27
Today

Hide Fiber Bundles for the OSL2 and OSL2IR Fiber Light Sources

Fiber Bundles for the OSL2 and OSL2IR Fiber Light Sources

OSL2 Single-Output Bundle
Click to Enlarge
OSL2FB Bundle Laying Flat
on the Table
OSL2 Single-Output Bundle
Click to Enlarge
OSL2RFB Gooseneck Bundle Angled Upward
OSL2 Gooseneck Y-Bundle
Click to Enlarge
OSL2YFB Gooseneck
Y-Bundle Provides Two Independently Positionable Beams
  • Replacement Fiber Bundles for OSL2 and OSL2IR Light Sources
  • Gooseneck Bundles Provide Added Rigidity for Easy Manual Positioning
  • Y-Bundle Provides Two Independently Positionable Beams
  • Also Compatible with the Former OSL1 Light Source

Thorlabs offers fiber bundles designed to be used with the OSL2 and OSL2IR Fiber Light Sources sold above. These cables have fiber tips with Ø7.9 mm (Ø0.31") outer dimensions, enabling them to be used in place of the fiber bundle included with the OSL2 and OSL2IR.

Single-Output Fiber Bundle
The OSL2FB Single-Output Fiber Bundle has a flexible stainless-steel housing and is a direct replacement for the bundle included with the OSL2 and OSL2IR Light Sources.

Gooseneck Single-Output Fiber Bundle
The OSL2RFB Gooseneck Single-Output Fiber Bundle has the same fiber configuration as the bundle included with the OSL2 and OSL2IR, but has a gooseneck jacket for stability and easy manual positioning. The gooseneck jacket allows the bundle to maintain its position once it has been set.

Gooseneck Y-Bundle
The OSL2YFB Gooseneck Y-Bundle (Bifurcated) Cable splits the output of the fiber light source into two independently positionable beams, allowing larger work areas to be illuminated. Unlike the fiber bundle included with the OSL2 and OSL2IR, each leg of this bifurcated cable has a gooseneck jacket for easy manual positioning.

Item # OSL2FB OSL2RFB OSL2YFB
Description Single-Output Bundle Gooseneck
Single-Output Bundle		 Gooseneck Y-Bundle
Fiber Bundle Length 91 cm (36") 91 cm (36") 51.69 cm (20.35")
Bundle Effective Core Diametera 6.4 mm (0.25") 6.4 mm (0.25") 4.52 mm (0.18")
Operating Wavelength Rangeb 390 - 1750 nm
Numerical Aperture (NA) 0.57
Number of Fibers (Input) 6718 (Calculated)
Fiber Core Diameterc 50 µm
Fiber Cladding Diameterc 52.5 µm
Fiber Material Silica
Fiber Strength >150 kg/mm2
Attenuation (at 940 nm) <0.6 dB/m
Minimum Bend Radius 100 mm 100 mm 150 mm
Operating Temperature 0 to 180 °C 0 to 135 °C 0 to 135 °C
  • Effective core diameter at the output of the fiber bundle.
  • Defined by the wavelength range in which the transmission of the fiber is higher than 10%.
  • Dimensions of the individual fibers within the bundle.

Part Number
Description
Price
Availability
OSL2FB
Customer Inspired! Single-Output Bundle for OSL2 and OSL2IR Fiber Light Sources, 91 cm (36")
$134.24
Today
OSL2RFB
Customer Inspired! Gooseneck Single-Output Bundle for OSL2 and OSL2IR Fiber Light Sources, 91 cm (36")
$158.00
Today
OSL2YFB
Gooseneck Y-Bundle for OSL2 and OSL2IR Fiber Light Sources, 51.69 cm (20.35") Legs
$181.75
Today

Hide Microscope Ring Illuminator for the OSL2 and OSL2IR Fiber Light Sources

Microscope Ring Illuminator for the OSL2 and OSL2IR Fiber Light Sources

FRI61F50 Mounted to a Microscope
Click to Enlarge
FRI61F50 Mounted on a Zoom Microscope
  • Large Working Distance Range: 50 - 170 mm
  • Provides a Bright, Uniform, 360° Shadow-Free Illumination Area
  • Provides Lighting Along the Microscope's Optical Axis

Thorlabs’ FRI61F50 Fiber Ring Illuminator has a 915 mm (36.02") long fiber bundle that couples light from our OSL2 and OSL2IR Fiber Light Sources into a Ø55 mm ring illuminator composed of five concentric fiber rings. The illuminator easily mounts onto most standard upright microscopes, such as the one shown to the right. It is secured using three thumbscrews, each of which is nylon tipped to produce adequate holding friction while preventing scratching or marring of the microscope. The fiber ring slips around any objective housing with a diameter of 60 mm or less.

Our fiber ring illuminator provides lighting very nearly aligned to the optical axis of the microscope that is shadow-free and uniform across the sample plane and throughout the entire working distance (WD) range. The use of 5 fiber rings increases the light intensity and WD range compared to illumination from a single fiber ring.

The fiber ring illuminator can be attached to the OSL2 or OSL2IR using the included adapter. The two nylon-tipped setscrews can be tightened using the included 1/16" hex key. Our AD16F adapter is available as a replacement.

The FRI61F50 has a WD range of 50 - 170 mm. Using the illuminator at distances greater than 170 mm will result in low-intensity, even illumination, which may be acceptable depending on the application.

Clicking the info icon icon in the table below will open a window that contains additional specifications, performance data, and drawings.

Item # Info Operating Wavelength Range Transmission Working Distance (WD) Compatible Objective Housing Diameter
FRI61F50 info 365 - 900 nm 46% 50 - 170 mm ≤ 60 mm

Part Number
Description
Price
Availability
FRI61F50
Fiber Ring Illuminator for OSL2 and OSL2IR Fiber Light Sources, WD = 50 - 170 mm
$472.79
Today

Hide Collimation and Focusing Packages for Fiber Bundles

Collimation and Focusing Packages for Fiber Bundles

Item # OSL2COL OSL2FOC
Description Collimation Package Focusing Package
Working Distance (WD) N/A 20 mm
Outer Dimensions Ø17.8 mm x 47.3 mm Ø17.8 mm x 56.0 mm
Threads on Output Port Internal SM05 (0.535"-40) Threads
Installed Lenses LA1289 (1 Place) LA1289 (2 Places)
Spot Size at 20 mm
Working Distance		 Ø14.5 mm Ø5.5 mm
Collimation Package with Filter
Click to Enlarge
OSL2COL Collimation Package with Mounted Ø25.0 mm Filter
  • Packages to Collimate or Focus Light
  • Designed for Use with the OSL2, OSL2IR, and Former OSL1 Light Sources
  • Internal SM05 (0.535"-40) Threads at Output End for Thorlabs' Ø1/2" Lens Tubes
  • Same Ø0.70" (Ø17.8 mm) Outer Diameter as Our Ø1/2" Lens Tubes
Fiber Bundle Beam
Click for Details
Fiber Bundle Without Optics
Fiber Bundle Collimation Package
Click for Details
OSL2COL Collimating Package
Fiber Bundle Focusing Package
Click for Details
OSL2FOC Focusing Package

These collimation and focusing packages are designed for use with the fiber bundle included with the OSL2 and OSL2IR light sources; the fiber bundle included with the former OSL1 light source; and the replacement fiber bundles sold above. Two 6-32 setscrews that accept a 1/16" hex key secure the tip of the fiber bundle into the back of the collimation or focusing package. Internal SM05 (0.535"-40) threads on the front of each package and a 0.70" (17.8 mm) outer diameter make these directly compatible with our family of Ø1/2" lens tubes and components.

The photos to the left show the light output from the fiber bundle included with the OSL2 lamp. The photo to the far left shows the highly divergent beam emitted from the fiber bundle when it does not have a lens assembly attached. The other two photos show the beam when the collimation and focusing packages are attached.

The photo to the right illustrates one way to filter the output light from the OSL2 lamp using a mounted Ø25.0 mm filter. For details on alternate configurations using unmounted Ø12.5 mm or Ø25.0 mm filters, please click the photo.


Part Number
Description
Price
Availability
OSL2COL
Collimation Package for OSL2- and OSL2IR-Compatible Fiber Bundles
$108.10
Today
OSL2FOC
Focusing Package for OSL2- and OSL2IR-Compatible Fiber Bundles, WD = 20 mm
$146.12
Today

Hide Fiber Connector Adapters

Fiber Connector Adapters

Collimation and Focusing Packages
Click for Details
Vacuum-Compatible Wide Key FC/PC Adapter
Collimation and Focusing Packages
Click for Details
OSL2 with an SM1SMA Adapter and Multimode Fiber Bundle
  • SM1-Threaded Disks with FC/PC or SMA Bulkhead
  • Vacuum-Compatible Wide-Key FC/PC and SMA Versions Available
  • Connect Standard Fiber Patch Cables or Fiber Bundles to our OSL2 and OSL2IR Light Sources

Thorlabs' Fiber Connector Adapters allow fiber patch cables and bundles with standard connectors to be used with the OSL2 and OSL2IR light sources (see photo to the right). Vacuum-compatible versions of the SM1FC and SM1SMA are available; the SM1SMAV and SM1FCV adapters are both vacuum compatible down to 10-10 Torr. Please note that the light output from fiber patch cables or bundles will be lower than that of the fiber bundle included with the OSL2 and OSL2IR, due to the smaller core or effective core diameter and lower NA. We recommend verifying that any other fiber bundle used with the OSL2 or OSL2IR light sources can sustain the heat from the bulb; please contact Tech Support with inquires.

To connect a patch cable, the fiber bundle adapter that comes preinstalled on the OSL2 or OSL2IR must first be removed by unscrewing it from the output port. Next, thread the fiber connector adapter into the output port. Each disk has four dimples, two in the front surface and two in the back surface, that allow it to be tightened from either side using either the SPW909 or SPW801 spanner wrench. The dimples do not go all the way through the disk so that the adapters can be used in light-tight applications. For Thorlabs' full line of SM1-threaded adapters, see Terminated Fiber Adapters.


Part Number
Description
Price
Availability
SM1FC2
FC/PC Fiber Adapter Plate with External SM1 (1.035"-40) Threads, Narrow Key (2.0 mm)
$34.45
Today
SM1FC
FC/PC Fiber Adapter Plate with External SM1 (1.035"-40) Threads, Wide Key (2.2 mm)
$34.45
Today
SM1FCV
Vacuum-Compatible FC/PC Fiber Adapter Plate with External SM1 (1.035"-40) Threads, Wide Key (2.2 mm)
$76.17
Today
SM1SMA
SMA Fiber Adapter Plate with External SM1 (1.035"-40) Threads
$33.61
Today
SM1SMAV
Vacuum-Compatible SMA Fiber Adapter Plate with External SM1 (1.035"-40) Threads
$60.14
Today

Hide Replacement Light Bulbs

Replacement Light Bulbs


Click to Enlarge
OSL2 Light Bulb Replacement
Access Door

Click to Enlarge
Click for Raw Data
Comparison of Replacement Bulbs. These spectra are taken with the included fiber bundle and account for attenuation within the fiber bundle.
*OSL2B is Included with OSL2 Light Source
**OSL2BIR is Included with OSL2IR Light Source
  • OSL2B: Replacement 3200 K Bulb for the Original Light Bulb Included with the OSL2 Light Source
  • OSL2B2: 3400 K Bulb with Higher Output Power than OSL2B (See Graph Below)
  • OSL2BIR: Replacement 3200 K Bulb with Enhanced Illumination in the Near Infrared for the Original Light Bulb Included with the OSL2IR Light Source
  • Replacement Bulb for the Former OSL1 Light Source Sold Below

Thorlabs offers three different replacement bulbs for the OSL2 and OSL2IR High-Intensity Fiber Light Sources. The OSL2B is identical to the original bulb that comes with the OSL2, and the OSL2B2 is a high-power variant of the OSL2B. The OSL2BIR is identical to the original bulb that comes with the OSL2IR. The OSL2B and OSL2B2 bulbs each have an integrated hot mirror that blocks most of the IR light. In contrast, the OSL2BIR provides enhanced output in the near-IR due to the aluminum-coated reflector and lack of integrated hot mirror. The graph below compares the spectra and power of these bulbs. To view a spectrum and raw data for each individual bulb, click on the graph icons in the table below.

To install the replacement bulb in the OSL2 or OSL2IR sources, open the door on the top of the unit, as shown in the photo to the right, and remove the old bulb. Details are available in Chapter 5 of the OSL2 manual or OSL2IR manual.

Item # OSL2B OSL2B2 OSL2BIRa
Spectrumb
(Click for Details)		 OSL2B Spectrum OSL2B2 Spectrum OSL2BIR Spectrum
Bulb Type 150 W, 3200 K, EKE/10H 150 W, 3400 K, EJV 150 W, 3200 K, EKE/AL,
Al-Coated Reflector
Lifetime 1000 Hours 40 Hours 200 Hours
  • The OSL2BIR emits strong infrared light. Thorlabs' fiber bundles designed for the OSL2 and OSL2IR light sources are compatible with this source, but we recommend verifying that any other fiber bundle used with this source can sustain the heat from the bulb. The OSL2BIR is not compatible with the former OSL1 light source.
  • Each spectrum represents the output of the bulb only and does not account for attenuation within the fiber bundle. See the graph to the right for spectral data that accounts for attenuation within the fiber bundle.

Part Number
Description
Price
Availability
OSL2B
3200 K Replacement Bulb for OSL2 and OSL2IR Fiber Light Sources, 1000 Hour Lifetime
$57.02
Today
OSL2B2
Customer Inspired! 3400 K Replacement Bulb for OSL2 and OSL2IR Fiber Light Sources, 40 Hour Lifetime
$43.66
Today
OSL2BIR
Customer Inspired! 3200 K Enhanced IR Replacement Bulb for OSL2 and OSL2IR Fiber Light Sources, 200 Hour Lifetime
$72.77
Today

Hide Replacement Bulb for the Former OSL1 Fiber Light Source

Replacement Bulb for the Former OSL1 Fiber Light Source

Item # OSL1B
Spectruma
(Click for Details)		 OSL1B Spectrum
Bulb Type 150 W, 3250 K, EKE
Lifetime 200 Hours
  • This spectrum represents the output of the bulb and does not account for attenuation within the fiber bundle.

The OSL1B replacement light bulb is identical to that included with our former OSL1 light source. The bulb has an integrated hot mirror that blocks most of the IR light. Click on the graph icon in the table to the right to view the bulb's emission spectrum.

To install the replacement bulb in the former OSL1 source, simply loosen the two fasteners on the front panel of the unit, slide out the bulb assembly, and remove the old bulb. Details are available in Chapter 4 of the OSL1 manual, available as a PDF here. The OSL1B bulb can also be installed in our OSL2 or OSL2IR light source by following the installation instructions in Chapter 5 of the OSL2 manual or OSL2IR manual.


Part Number
Description
Price
Availability
OSL1B
3250 K Replacement Light Bulb for OSL1, OSL2, and OSL2IR Fiber Light Sources, 200 Hour Lifetime
$43.66
Today

Hide SMA Fiber Bundle Adapter for the Former OSL1 Fiber Light Source

SMA Fiber Bundle Adapter for the Former OSL1 Fiber Light Source

OSL1-SMA Adapter
Click to Enlarge
SMA Fiber Bundle Attached to OSL1-SMA Adapter

The OSL1-SMA fiber bundle adapter allows multimode fiber bundles with SMA connectors to be used as the output of our former OSL1 fiber light source. Our fiber bundles with SMA connectors offer broader operating wavelength ranges than the fiber bundle included with the former OSL1 and the OSL2YFB bifurcated fiber bundle (sold above), and they are available in longer lengths.

The OSL1-SMA adapter inserts into the front panel of the former OSL1 unit and is secured by a thumbscrew. It is compatible with SMA905- and SMA906-style connectors.

Note: The OSL1-SMA is not compatible with our current OSL2 or OSL2IR light sources.


Part Number
Description
Price
Availability
OSL1-SMA
SMA Fiber Bundle Adapter for OSL1 Fiber Light Source
$36.54
Today