Reflectance Cell Holder
Measures relative reflectance (%) by comparing the intensity of light specularly reflected from a sample surface with that reflected from a reference standard.
An aluminum-coated standard mirror is used as the 100% reflectance reference. The reflectance properties of the sample are evaluated based on the ratio of reflected light intensity relative to the reference standard.
An aluminum-coated standard mirror is used as the 100% reflectance reference. The reflectance properties of the sample are evaluated based on the ratio of reflected light intensity relative to the reference standard.
Measurement Angle (Incident Angle) and Polarization Effects
Specular reflectance measurements are generally less affected by polarization at smaller incident angles. In most applications, an incident angle between 5° and 10° is commonly used.
Application
Unlike an integrating sphere, which collects all reflected light, this accessory selectively measures the specular reflection component, providing greater sensitivity to surface characteristics.
Configuration & Features
Specifications
Wavelength Range
200 – 1,000 nm
Sample Size
Sample: Min. 10 × 10 mm / Max. 100 × 120 mm
Reference: Min. 10 × 10 mm / Max. 25 × 25 mm
Measurement Aperture
7 × 7 mm
Angle of Incidence
Approx. 10°
Reflection Reference
Aluminum-coated plane mirror (standard reference mirror)
Repeatability
< 0.002
Stability
< 0.002
Measurable Reflectance Range
0 – 100%
Measurement Resolution
Same as the connected spectrophotometer
Polarization Dependency
Negligible
Stray Light Influence
Negligible
(*) Compatible Products
