Pro Lite Technology
Call Photometric Testing on +44 (0) 1242 701300     
Facebook Twitter LinkedIn

Measurement with Light

Optical Properties

Photometric Testing offers spectrophotometric measurements of the reflectance and transmittance of materials over the wavelength range from 250-2500nm.


What Can We Measure?

Applicable Standards

  • Spectral reflectance, 250-2500nm
    [total, diffuse & specular]
  • Spectral transmittance, 250-2500nm
    [total, diffuse & regular]
  • CIE 15.2

Photometric Testing provides measurements of reflectance and transmittance in the UV-VIS-NIR band using a state-of-the-art Perkin Elmer Lambda 950 ratio-recording spectrophotometer. Using a 150mm Spectralon integrating sphere and an 8°/hemispherical measurement geometry, the Lambda 950 has the dynamic range and sensitivity for precision measurements of highly reflective and anti-reflective coatings, colour correction coatings, bandpass characteristics of UV, VIS and NIR filters, and more. With a self-referencing double beam illumination system, all measurements made with the Lambda 950 are inherently free of any sample substitution error.

Integrating sphere reflectance measurements provide readings that are largely independent of sample type (either glossy or matte). Measurements can be made in a specluar-included configuration (total reflectance) and in a specular-excluded geometry (diffuse-only reflectance). The degree of specluar reflectance is computed by deducting the diffuse from the total reflectance. All measurements are made with reference to a German PTB tgraceable reference standard.

In transmittance, the integrating sphere can be used to measure both the total and the diffuse-only component of transmittance, and the regular (non-diffuse) transmittance calcluated by subtracting the diffuse from the total transmittance readings.

Measurement data is provided in a report and in electronic format with reflectance or transmittance values reported every 1nm. Please use our enquiry form to have a technical specialist call you back or to request a quotation for a measurement.

Related Products
Service List
Brochures
Case Studies
Knowledge Base
Have a Question?

Why not use our convenient enquiry form?

> Click Here

Buy Online

This product can be ordered via the Pro-Lite on-line shop.

> Click Here

 Need a
 Measurement?

Let us know what you need tested and what data you need using our convenient enquiry form

> Click Here