Gold Coated Integrating Sphere for Universal use in Reflection and Transmission Measurements
- 150 mm/6" sphere diameter
- 5 application ports
- Diffuse gold coating
- Precise port alignment and uniform knife-edges due to CNC machined housing
- Optional accessories available
UPG-150-ART - multi-functional integrating sphere for reflection, transmission and radiant power in the infra-red spectral range
Photometry to determine key material properties
Key material properties is a general term used to refer to the reflection, transmission and absorption properties of a material. Photometry hereby refers to a measurement process through which these properties are determined using a photometer.
Integrating sphere photometer
The integrating sphere is very important in both broadband and narrow-band photometric applications for diffuse sample illumination and detection of the reflected and transmitted light proportions.
Gold has a high, constant spectral reflectance within the spectral range between 800nm and 20µm. Integrating spheres with gold coatings are therefore ideally used for applications in the infrared spectral range. Gigahertz-Optik exclusively uses pure gold characterized by a 95% reflectance to coat its integrating spheres for IR applications. The roughness of the inner sphere surface is designed for optimum diffuse reflectance.
UPG-150-ART precision integrating sphere
With the 150mm diameter, the UPG-150-ART provides a good compromise in terms of precision of the sphere function and level of the measurement signal. Its production from a solid aluminum block ensures a very precise alignment of the measurement ports to each other. Another characteristic property are the thin circumferential knife-edges of the measurement ports that enable a high acceptance angle for diffuse light.
Multifunctional integrating sphere
The UPG-150-ART is ideal for multiple functions through its five knife-edged measurement ports that can be used either while open or closed. Possible measurement setups include:
- 0°/d Reflection
- 8°/d Reflection with or without gloss
- 0°/d directed and diffuse transmission
- Measurement with sample absorption correction
- Two-ray measurement setups
- Radiant power measurements
Accessories for individual sphere assemblies
Port plugs and port reducers that can easily be fixed and removed using the Slide & Fix holder are offered for either closure or reduction of ports. An important feature of the UPB-150-ART is that the front side of the plugs and reducers projects into the port and is on the same level as the sphere surface.
Universal sample holder
The sample holder is slid and fixed onto the posts of the Slide & Fix holder and ensures secure mounting of thin and thick samples. An important feature of the Slide & Fix system is that it can be combined with port reducers and a light trap.
Light trap with Slide & Fix holder
The light trap has a 30mm input port and ensures minimal back reflection over the entire usable spectral range of the integrating sphere through its internal design and black absorbing coating. The Slide & Fix holder can be used to combine the light trap with port reducers and the sample holder.
Quick-change holder for detectors and light guides
Removable adapters are offered for mounting of detectors and light guides. Each has a baffle that can be aligned to the five measurement ports accordingly depending on the measurement application. The UMPA port adapters of our modular integrating spheres can hereby be used.
Gold coating also available as a service
We offer gold coatings for integrating spheres or other parts also as a service. Please contact us with your specific request.
Typical spectral reflectance of the pure gold sphere coating
Alignment of the five measurement ports of the UPG-150-ART enables universal use of the sphere.
The front side of the port plugs and port reducers and sphere surface are at the same level and thus ensure an almost ideal reflection surface
UPG-150-ART multi-port integrating sphere with Slide & Fix system for mounting of accessories.
Light trap for absorption of the transmitted light proportion of transparent samples in 8°/d reflectance measurement setup. Additional port reducer.
UPG-150-ART, integrating sphere
UPG-150-ART-Z01, port plug
UPG-150-ART-Z02-3, 3mm port reducer
UPG-150-ART-Z02-15, 15mm port reducer
UPG-150-ART-Z02-25, 25mm port reducer
UPG-150-ART-Z03, sample holder
UPG-150-ART-Z04, light trap
UPG-150-ART-Z05, 0.5“ detector adapter with baffle
UPG-150-ART-Z06, 1.0“ detector adapter with baffle
UPG-150-ART-Z07, 2.0“ detector adapter with baffle