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STAN-SSH & STAN-SL Specular Standards

Ocean Optics STAN-SSH & STAN-SSL Specular Reflectance Standards

Standards of high & low specular reflectance for the 200-2500nm range

Standards of specular reflectance are used as references when measuring the reflectance of materials with specular reflectance. The Ocean Optics STAN-SSH is a standard of high reflectance and is used when measuring samples such as optical substrates, optical coatings, machined metals and semiconductor materials. The STAN-SSL is a standard of low reflectance and is used to test thin film and anti-reflective coatings, blocking filters and substrates.

STAN-SSH High Reflectance Specular Standard

The STAN-SSH is a 1.25 inch front surface mirror based upon fused silica with a protective overcoat. It provides a reflectance in excess of 85% across the 200-2500nm range. The STAN-SSH-NIST is calibrated against a NIST master (# NIST38060S, s/n 99G16) with an approximate uncertainty of 0.1% (250-2500nm) and is supplied with a certificate of calibration, a data sheet charting the spectral reflectance and a CD containing calibration data that can be transferred to Ocean Optics spectrometer application software. The standard is housed in an anodised aluminium cup with screw lid. A convenient holder (model STAN-HOLDER) is available as an accessory for keeping the standard in place during measurements.

STAN-SSL Low Reflectance Specular Standard

The STAN-SSL is a 1.25 inch black glass standard with a reflectance of approximately 4.0% across the 200-2500nm range. The standard is housed in an anodised aluminium cup with screw lid. A convenient holder (model STAN-HOLDER) is available as an accessory for keeping the standard in place during measurements.

Care & Use of Specular Standards

  • Spectral range is 200-1100nm when used with an Ocean Optics spectrometer.
  • Handle the standards with care and avoid touching the calibrated surface.
  • Clean the surface of specular standards by removing dust with pressurised gas. Then use the drag method of cleaning to remove fingerprints and residual contaminants. In the drag method, lens tissue saturated with reagent-grade isopropyl alcohol or acetone is slowly dragged across the surface. Done correctly, the solvent will evaporate uniformly with no streaking or spotting.

Specifications & Ordering Information

Part No. STAN-SSH STAN-SSH-NIST STAN-SSL
Substrate Dimensions 1.25" diameter x 0.25" thick 1.25" diameter x 0.25" thick 1.25" diameter x 0.25" thick
Housing Dimensions 1.50" diameter x 0.75" thick 1.50" diameter x 0.75" thick 1.50" diameter x 0.75" thick
Reflectance Material Mirrored fused silica with protective overcoat Mirrored fused silica with protective overcoat Black glass
Reflectance ~ 85-90%, 200-800nm
~ 85-99%, 800-2500nm
~ 85-90%, 200-800nm
~ 85-99%, 800-2500nm
~ 5.4%, 200-950nm
~ 4.0%, 950-2500nm
Calibration No NIST traceable No
Accessory Holder STAN-HOLDER STAN-HOLDER STAN-HOLDER

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