QTH Light Sources

QTH Light Sources

The QTH Light Source

The spectral distribution of a WTH lamp is close to that of a blackbody curve with a colour temperature of approximately 3000°K. QTH lamps have a useful spectral output from 300nm to 2.7µm.

Light from QTH lamps is emitted by a heated filament. The filament is enclosed in a quartz envelope filled with gases. The spectral distribution is close to that of a blackbody curve with a colour temperature of approximately 3000°K. QTH lamps have a useful spectral output from 300nm to 2.7µm with several advantages: a smooth spectrum without lines, high output in the visible and infrared regions, high temporal and spatial stability, and inexpensive operation.

QTH lamps are standard for photometric applications since they are much brighter than typical IR sources (SiC, ceramic, etc.) For applications where temporal stability is not critical, the high power models can be AC operated. The 120 Hz ripple of AC powered high current bulbs (> 5 A) is well under 1%. The main source of instability is line voltage variation.

QTH Light Source

Customizable

All components of the system, including light source and monochromator, can be customized. Options include:

Scientific Grade Lamp housing
Collimated Uniform 1 Inch Diameter Output Beam
Supports 50W-1000W Quartz Tungsten Halogen (QTH) Lamps
Forced Air Cooled
Available Refractive Condensing Optics Attachments
Touchscreen Power Supply
Vertically Mounted QTH Filament Lamp
Side Exit Port with Back Spherical Reflector

Optimal Configuration

The QTH lamp is mounted in a vertical position with the exit port on the side wall. A back spherical reflector mounted on adjustable alignment pins redirects the rear illumination to the forward exit port thereby doubling the amount of light collected.

QTH Infrared Custom Solar Simulator

Using a QTH lamp for illuminate test areas of more than 1 meter with a one sun intensity. Learn more about our custom projects here.

QTH on a Tunable Monochromatic Light Source

Sciencetech also offers a tunable light source with QTH lamp, Learn more about our Tunable Light Source Models here.

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Collimated beam lamp housing for 1000W QTH lamps. The system features a spherical reflector. Collimating optics (ordered separately) must be selected according to the desired target size and lens material. Up to 76 mm (3") diameter optics can be accommodated by this model. Please see the COL-series of optics for a selection. Not include a power supply.
2,750.00
In stock
Collimated beam lamp housing for 1000W QTH lamps. The system features a spherical reflector. Collimating optics (ordered separately) must be selected according to the desired target size and lens material. Up to 76 mm (3") diameter optics can be accommodated by this model. Please see the COL-series of optics for a selection. Not include a power supply.
2,750.00 2750.0 USD
Price Valid only in North America

Illuminates Fiber Bundles up to 13mm diameter
Visible Light Fiber Illuminator with built-in IR filter
100 W QTH lamp with integrated dichroic ellipsoidal reflector
Dichroic cold mirror and heat dump to eliminate infrared light
Collimating and condensing optics into a fiber
Filter drawer for interference filters
Regulated adjustable 100W DC power supply
Operation at 230VAC@50Hz or 120VAC@60Hz

3,300.00
In stock
Illuminates Fiber Bundles up to 13mm diameter
Visible Light Fiber Illuminator with built-in IR filter
100 W QTH lamp with integrated dichroic ellipsoidal reflector
Dichroic cold mirror and heat dump to eliminate infrared light
Collimating and condensing optics into a fiber
Filter drawer for interference filters
Regulated adjustable 100W DC power supply
Operation at 230VAC@50Hz or 120VAC@60Hz

3,300.00 3300.0 USD
Price Valid only in North America

Includes 1 inch diameter fused silica collection optics that produce a collimated beam
Includes adapter for 100W QTH Lamp
Housing can Support xenon, mercury, mercury-xenon arc lamps and QTH lamps.
Includes spherical back reflector for increasing collected optical intensity
Forced Air Cooled
Refractive condensing optics attachments available
Variable power supply (purchased separately) with optical feedback (option)
Standard vertical orientation, horizontal mounting bracket for standard 3" optical height available.
2,213.00
In stock
Includes 1 inch diameter fused silica collection optics that produce a collimated beam
Includes adapter for 100W QTH Lamp
Housing can Support xenon, mercury, mercury-xenon arc lamps and QTH lamps.
Includes spherical back reflector for increasing collected optical intensity
Forced Air Cooled
Refractive condensing optics attachments available
Variable power supply (purchased separately) with optical feedback (option)
Standard vertical orientation, horizontal mounting bracket for standard 3" optical height available.
2,213.00 2213.0 USD
Price Valid only in North America

Includes 2 inch diameter glass collection optics that produce a collimated beam
Includes adapter for 50W QTH Lamp
Housing can Support xenon, mercury, mercury-xenon arc lamps and QTH lamps.
Includes spherical back reflector for increasing collected optical intensity
Forced Air Cooled
Refractive condensing optics attachments available
Variable power supply (purchased separately) with optical feedback (option)
Standard vertical orientation, horizontal mounting bracket for standard 3" optical height available.
2,593.00
In stock
Includes 2 inch diameter glass collection optics that produce a collimated beam
Includes adapter for 50W QTH Lamp
Housing can Support xenon, mercury, mercury-xenon arc lamps and QTH lamps.
Includes spherical back reflector for increasing collected optical intensity
Forced Air Cooled
Refractive condensing optics attachments available
Variable power supply (purchased separately) with optical feedback (option)
Standard vertical orientation, horizontal mounting bracket for standard 3" optical height available.
2,593.00 2593.0 USD
Price Valid only in North America

Includes 2 inch diameter fused silica collection optics that produce a collimated beam
Includes adapter for 250W QTH Lamp
Housing can Support xenon, mercury, mercury-xenon arc lamps and QTH lamps.
Includes spherical back reflector for increasing collected optical intensity
Forced Air Cooled
Refractive condensing optics attachments available
Variable power supply (purchased separately) with optical feedback (option)
Standard vertical orientation, horizontal mounting bracket for standard 3" optical height available.
2,655.00
In stock
Includes 2 inch diameter fused silica collection optics that produce a collimated beam
Includes adapter for 250W QTH Lamp
Housing can Support xenon, mercury, mercury-xenon arc lamps and QTH lamps.
Includes spherical back reflector for increasing collected optical intensity
Forced Air Cooled
Refractive condensing optics attachments available
Variable power supply (purchased separately) with optical feedback (option)
Standard vertical orientation, horizontal mounting bracket for standard 3" optical height available.
2,655.00 2655.0 USD
Price Valid only in North America

Includes 1 inch diameter glass collection optics that produce a collimated beam
Includes adapter for 250W QTH Lamp
Housing can Support xenon, mercury, mercury-xenon arc lamps and QTH lamps.
Includes spherical back reflector for increasing collected optical intensity
Forced Air Cooled
Refractive condensing optics attachments available
Variable power supply (purchased separately) with optical feedback (option)
Standard vertical orientation, horizontal mounting bracket for standard 3" optical height available.
2,213.00
In stock
Includes 1 inch diameter glass collection optics that produce a collimated beam
Includes adapter for 250W QTH Lamp
Housing can Support xenon, mercury, mercury-xenon arc lamps and QTH lamps.
Includes spherical back reflector for increasing collected optical intensity
Forced Air Cooled
Refractive condensing optics attachments available
Variable power supply (purchased separately) with optical feedback (option)
Standard vertical orientation, horizontal mounting bracket for standard 3" optical height available.
2,213.00 2213.0 USD
Price Valid only in North America
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