Ocean Optics Specular Reflectance Standards - Manual

STAN-00000-000-01-201106 1
Specular Reflectance Standards
Operating Instructions
Ocean Optics offers three specular reflectance standards for use as references when measuring the
reflection of surfaces with high or low specular reflectivity:
 STAN-SSH: Used to measure high-reflectance surfaces of optical substrates and coatings,
machined metals and semiconductor materials. Values are calculated for any angle from 0 to 45º.
 STAN-SSH-NIST: This is a calibrated version of the STAN-SSH. Values are calibrated at a 6º
angle traceable to NIST and are included with the standard in a calibration file on CD. A periodic
recalibration is recommended. Check with Ocean Optics for recalibration services and costs.
 STAN-SSL: This is a low-reflectance specular reflectance standard.
Operation
Reflection is the return of radiation by a surface, without change in wavelength. Reflection is expressed as
a percentage relative to the reflection from a standard substance, such as the STAN-SSH.
If you are using the STAN-SSH-NIST, load the CD that came with your reflectance standard and store the
calibration files to a location that you will browse to later.
Operating Using OOIBase32 Software
► Procedure
1. Make sure you are in Scope mode, by either clicking the Scope Mode icon on the toolbar, or
selecting View | Scope Mode. Take a reference spectrum by first making sure nothing is blocking
the light path going to your reference. Place the reflection probe over the reflection standard.
Keep the reflection probe at an angle between 0 and 45
.
2. Click the Store Reference spectrum icon on the toolbar or select Spectrum | Store Reference
from the menu bar to store the reference. This command merely stores a reference spectrum in
memory. You must select File | Save | Reference from the menu bar to permanently save the
spectrum to disk.