Light Source
When a broadband light source in the ultraviolet-visible-near infrared portion of the spectrum is required, an arc lamp has no peer. The intensity of an arc lamp is extremely high and, depending on the lamp, reasonably continuous throughout the region from 240 to 1200 nanometers. Usable intensities are available in the deep UV to 180 nm and in the near infrared to 2500 nm.
While the DeltaRAM X™ MI offers the ultimate in speed, its intensity is great as well. The essential ingredient of intensity is the unique light source.
At the heart of virtually every OBB Light Source is a proprietary on-axis ellipsoidal reflector. Our reflectors collect up to 70% of the radiant energy from the arc lamp—vs 12% for typical condenser systems. The ellipse literally wraps around the arc lamp, collecting 5 to 6 times more output power than from a conventional system.
The arc source is located at one focus of the ellipse, and the radiation is reflected by the ellipse to the other focus. Since the light is brought to a focus by reflection rather than refraction (through a lens), there are less losses from absorption or lens-surface back-reflection. Since it collects light more efficiently, and focuses it more effectively, an OBB Lamp housing produces up to 11 times more power into a given smaller area than a conventional design. This is critical whether illuminating light guides, monochromator slits, pinholes or other small areas.
What this means is simply that you get the same output with an OBB 75 W system as with a conventional 450 W system. You obviously will save money and space.
Our elliptical reflectors are proprietary in design and the coating used. They are NOT electro-formed reflectors, which can distort with heat, and can degrade within months. Our proprietary design ensures that distortion of the critical ellipsoid does not occur as the lamp reaches its operating temperature. This ensures thermal stability of focus. The coating ensures reasonably long operating life—typically 2–3 years.
While conventional lamp housings resemble chimneys emitting ozone and requiring cumbersome venting, the OBB compact high intensity light source has a sealed lamp housing that requires no ozone venting.
Ignition noise can disrupt, or even destroy, sensitive equipment in the vicinity of an Arc Lamp during start-up. This can be quite a concern in a crowded lab environment. OBB Engineers introduced an igniter that is integrated onto the lamp housing. This design provides an effective EMI shield which contains the EMI pulse, providing a safer and more convenient environment to do your research in.
The lamp housing includes an adaptor that will accommodate either a 75 W Xenon or 100 W Mercury lamp (OBB Corp specified or supplied). An optional 150 W Xenon lamp adaptor is also available.
What is not included but required are a: reflector (choice of three), window (choice of three) and lamp. Here you have choices depending on your requirements.
Specifications |
| Lamp power capacity |
75 to 150 watts |
| Height |
100 mm (3.9 inches) |
| Width |
100 mm (3.9 inches) |
| Length |
210 mm (8.3 inches) |
| Weight |
1.9 kg (4.2 pounds) |
| Window Diameter (D) |
65 mm |
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Lamp
The DeltaRAM X™ MI comes with a 75 W compact arc xenon lamp as standard. The xenon gas used in the lamp provides continuous spectra from 250 nm to 1,200 nm of course at varying intensity (refer to spectral output graph).
Lamp Wattage |
Lamp Type |
Nominal Arc Length |
Nominal Arc Width |
| 75 watt |
Compact Arc Xenon |
0.8 mm |
0.3 mm |
Lamp Power Supply
Lamp power supply is a highly regulated DC unit that provides very stable power for xenon lamp. While stability is important for all applications, it is particularly important for imaging
Specifications |
| Input (user selectable) |
105–120 V/60 Hz or 210–240 V/50 Hz |
| Power Rating |
0 to 150 watts |
| Operating Voltage |
10 to 24 volts |
Operating Current
|
0 to 8 amps |
Pre-Ignition Vvoltage
|
> 85 volts |
Ripple at Max Current
|
< 10 milli-volts |
Stability After Warm-up
|
0.2% |
Line Voltage Regulation
|
0.1% current variation for 5 volts line change |
Load Regulation
|
0.1% current variation for 50% change in load impedance |
| Dimensions |
4.5 x 10.75 x 12.5 inches, 11.5 x 27.3 x 31.8 cm |
| Weight |
12 pounds, 5.45 kg |
Igniter
Ignition noise can disrupt, or even destroy, sensitive equipment in the vicinity of an Arc Lamp during start-up. This can be quite a concern in a crowded lab environment. OBB Engineers introduced an igniter that is integrated onto the lamp housing. This design provides an effective EMI shield which contains the EMI pulse, providing a safer and more convenient environment in which to do your research.
Igniter Dimensions |
| Length |
3.96 inches, 100.58 mm |
| Width |
3.96 inches, 100.58 mm |
| Height |
1.55 inches, 39.51 mm |
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