Oriel® Apex Sources with a Rear Reflector are now available. Potentially up to 60 % throughput improvement can be achieved as a portion of the backwards emitted radiation is captured to the output.
Newport’s Apex Series of quartz tungsten halogen systems are "plug-and-play" sources of VIS-NIR radiation. These sources use an integrated housing - lamp, electronics and condensing optics in a single enclosure. The lamp is held in a pre-aligned mount, so there is no need for lamp adjustments. The power supply is pre-set to operate the specified lamp. You don't need to adjust the current or voltage. Simply install the lamp, turn the source on, and you're ready to begin working. These systems are ideal for Researchers or Systems Integrators who have fixed power applications (i.e. no need to adjust the lamp's power), and don't need the versatility of our modular systems.
Why Apex?
We offer five families of QTH lamp sources. Table 1 gives a snapshot of the other families. Apex is the choice if you need a highly stable and collimated VIS-NIR source, but don't need to interchange lamps, remotely operate and monitor the source, or adjust the lamp's current. We removed some of the user features from our 10 - 1000 W Research Quartz Tungsten Halogen Lamp Housings, and integrated all the components into one enclosure, to keep costs down.
Table 1 Comparison of Oriel Quartz Tungsten Halogen Sources
|
Light Source Family |
Operates These Lamps |
Interchangeable Lamps |
Works With Light
Intensity Controller |
PC
Controlled |
| Apex |
10 - 100 W |
|
|
|
| 66310 Series |
10 - 20 W |
X |
|
|
| Series Q |
10 - 100 W |
X |
X |
X |
| PhotoMax™ |
10 - 100 W |
X |
X |
X |
| Simplicity Series |
50 - 1000 W |
|
|
|
| Research Series |
50 - 1000 W |
X |
X |
X |
Principle of Operation
Fig. 1 shows the simple optical path of an Apex QTH Lamp Source. A computer designed fused silica aspheric lens collects the lamp's radiation and collimates it. The output is a highly collimated, 1.3-inch diameter (33 mm) beam. You can then re-focus the output with one of our Secondary Focusing Lens Assemblies for Light Sources. If you are focusing into a fiber, use our Apex Fiber Illuminators. The Apex Fiber Illuminator has a focused output, matched to fused silica fibers. The output flange of the Apex housing is a 1.5-Inch Series female flange; all of our 1.5-Inch Series male-flanged accessories couple directly to the output of Apex.
Fig. 1 Optical configuration of standard Apex QTH Source.
F/2.2 Aspheric Lens Assembly
Oriel Light Sources traditionally have the condensing lens assembly in an enclosed barrel on the outside of the housing. With Apex, we built the lens system inside the housing (as shown in Fig. 1). We chose an F/2.2 aspheric fused silica lens as the condensing element because it has negligible spherical aberration, high throughput, and produces superior collimation. It is transmissive from 200 - 2500 nm.
The multiplication factor for this condenser is 0.05. This factor is a measured parameter that helps in computing the approximate total power of the collimated output in any wavelength band.
Lamps Operating in Vertical Position
Apex QTH Sources operate the lamp in a horizontal position, which means that the lamp's filament is in a vertical position. This ensures that the filament image is best matched to the vertical slit of a monochromator.
Mounting
Apex Housings have four leveling feet for free standing use. The feet allow 0.50-inch (13 mm) height adjustment. For hard mounting to an optical table, remove the feet and use the appropriate mounting holes.
Safety Considerations
Quartz tungsten halogen lamps emit some UV radiation. We recommend that users always wear protective eye and skin covering when working around any source that emits UV radiation. We offer Ultraviolet Safety Equipment.
Specifications
| Output Beam Size |
1.3 |
| Lens Multiplication Factor* |
0.05 |
| Beam Uniformity |
±5 % |
| Light Ripple |
<0.5 % rms |
| Line Regulation |
0.1 % |
| AC Input |
95- 132 V/2A
190 - 264 V/1A
50 - 60 Hz |
*The lens multiplication factor is a measured parameter for the lens. It helps in computing the approximate
Calculating Output Powertotal powerof the collimated output in any wavelength band.
Oriel Lamp Housings are designed to operate in a typical laboratory environment (typically 68 to 76 degrees F, up to 45% relative humidity). Temperature and humidity outside of typical laboratory range can contribute to cooling and ignition faults. Cooling issues will cause the over temperature sensor to open, and ignition problems will result from high humidity. Contact a Newport Technical Representative for more information if operating outside the suggested range.
