The high power collimated beam arc lamp housing produces a collimated 2" diameter uniform beam at its exit port (f/1.5). This allows for the attachment of refractive condensing optics (sold separately) to refocus the output light into a very fine focal point for maximum brightness. This is ideal for fiber optic applications where the light needs to be condensed into a small entrance of a fiber bundle. The model 201-1K is designed for 450W-1000W xenon, mercury-xenon, and mercury short arc lamps (sold separately). The housing is forced air-cooled with the arc lamp mounted in a vertical position. The exit port collects light from the side of the arc lamp with a back mounted spherical reflector to double light collection. Please specify arc lamp wattage and type at time of ordering as the lamp socket and cooling shroud is specific to the selected arc lamp.
Optical Configuration
The arc 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. This configuration is still not as effective as the ellipsoidal reflector based arc lamp housings (model 200-1K) system in light collection although it does produce a more uniform beam.
Beam Collimation
A 2" diameter collimating lens is mounted at the exit port of the arc lamp housing to produce near parallel output rays (f/1.5). This lens is made of borosilicate glass and filters most harmful UV rays below 360nm. For UV applications, this lens can be replaced with a fused silica version which allows all wavelengths including UV light above 200nm to pass through.
Focusing Optics
Refractive condensing optics can be attached to the exit port of the arc lamp housing to focus the light into a fine focal spot. Refractive condensing optics are actually better at condensing light into a smaller spot than ellipsoidal reflector based optics like the model 200-100 and 200-1K arc lamp housings. More importantly, refractive condensing optics can be set to any aperture value allowing it to better match the f number of the device it is illuminating for maximum light transfer efficiency. Ellipsoidal reflector based optics on the other hand, have a fixed aperture and therefore cannot match the f number of any illuminated device for maximum light transfer efficiency.
Cooling
The interior of the 201-1K arc lamp housing is hot enough to boil water. To keep it cool, a blower at the top draws air from the bottom and blows it over the arc lamp. Please note that forced air-cooling should not be used on ozone producing arc lamps as it would blow the corrosive and hazardous ozone outside to the work environment. A water-cooled option is available for the ozone to remain inside the arc lamp housing. In addition, this air cooling fan is typically set for 240VAC input voltage which matches the input voltage requirement of 1000W and 1600W power supplies. If a 500W power supply is ordered with an input voltage of 120VAC, then the cooling fan of this housing has to be set for 120VAC as well. Please add this 120VAC option when placing the order.
Optical Beam Height
The center beam line of the exit port is 284.2mm (11.19 inches) above the base of the lamp housing.
Supported Arc Lamps
This high power collimated beam arc lamp housing supports 450W-1000W short arc lamps which are sold separately. It does not support the 1600W xenon arc lamp as it is physically too big to fit inside the housing. Since each arc lamp type and wattage has its own socket style and cooling shroud requirement, it must be specified at the time of ordering. The arc lamp housing will not be able support another type or wattage of arc lamp after it is manufactured unless the optional “Interchangeable Xe and HgXe Lamps Modular Adapter” is ordered.
Power Supply
The 201-1K arc lamp housing is designed to work with Sciencetech model 500-500 (500W) and 500-1K (1000W) adjustable power supplies with built-in igniters. These power supplies are highly stabilized switching DC power supplies that can be adjusted above or below its rated power. For example, the 500W power supply can be adjusted between 350W-500W while the 1000W power supply can be adjusted between 800W-1200W. An optional Optical Feedback Unit (model FS-02) with a built-in light sensor is available to monitor the light intensity of the arc lamp and automatically adjust the power supply to maintain a consistent non-fluctuating intensity. The 201-1K arc lamp housing can also be used with other non-Sciencetech DC arc lamp power supplies as long as the power supply provides both DC output for lamp and a separate 220/240VAC output for its cooling fan. The power supply must also have its own arc lamp ignition circuitry.
Please note that Sciencetech's 500-500 (500W) and 500-1K (1000W) power supplies are designed for 220-240VAC input. However, the 500-500 (500W) power supply can be operated at 120VAC, but the cooling fan inside the arc lamp housing would need to be converted to 120VAC as well. Please order Product Code 20X-1K-CF120VAC for this 120VAC cooling fan conversion.
Cable Connection
There are three cable connections to the arc lamp housing. The positive and negative lamp terminals on the arc lamp housing are Superior Electric Supercon RP50G connectors which are recessed male connectors. The lamp cables that connect to them require Superior Electric Supercon PS50GB/PS50GR connectors. Please note these cable connectors have female ends for safety purposes. A separate 230VAC/120VAC cable powers the arc lamp housing cooling fan which plugs directly into an electrical wall outlet. This cooling fan cable also includes the safety ground connection to the housing.
Other Arc Lamp Housing Models
Please consider the 201-100 arc lamp housing for lower wattage lamps between 75W-200W. The 201-100 has the same vertical mount design and collimated output beam as the 201-1K, but is designed for lower power lamps with a 1" diameter output beam. Also available is the 200-1K arc lamp housing that utilizes an ellipsoidal reflector optical system for greater light collection ability. The 200-1K supports the same set of 450W-1000W arc lamps and is compatible with the same models 500-500 and 500-1K adjustable power supplies. The 200-1K ellipsoidal reflector has a fixed f/2.5 aperture and its beam is not nearly as uniform as the Model 201-1K.
Customization
Sciencetech has built many customized versions of the model 201-1K arc lamp housing. Examples include a water cooled version, and a horizontally mounted version to lower its optical beam height to match that of a table top system. If you require a certain feature in this arc lamp housing that is not shown, please contact our Applications Specialist at