See Us at Photonics West 2020

Light Tec's Measurement Services



Beacon Concepts offers Light Tec's services such as scattering measurements (BSDF for Bidirectional Scattering Distribution Function).  The BSDF determines the surface characterization of materials, objects or all kinds of surfaces through the light dispersion.  The measurement can be done in reflection(BRDF) or in transmission (BTDF).

Scattering measurements available :

  - 2D & 3D BSDF (Front & Back) measurements
  - High resolution BSDF

  - Spectral BSDF

  - TIR (Total Internal Reflectivity) measurements

  - TIS (Total Integrated Scatter) measurements

  - From UV (280 nm), trough Visible, up to IR 3.39 and 10.6 microns

The measurement data is delivered in text format.  Than, all data can be imported in every optical design software!

Light Tec has also developed a refractometer dedicated to the refractive index measurements of optical plastic (PMMA) plates with absolute accuracy of +/-0.001 and the high repeatability (better than 1%)

They have a laboratory especially dedicated to measurement.  The laboratory is a black room to avoid any inconvenient stray light and the temperature is controlled and regulated for optimal measurement environment.

Scatter Instruments from Light Tec


​​​​REFLET 180S

 The REFLET 180S is a unique stand-alone scattering measurement system.  REFLET 180S is especially suited for back/forward scatter light characterization for all types of materials and objects.  It allows you to measure the light distribution contained in the radiation of these materials in photometric and colorimetric terms.  Moreover, the system measures BRDF & BTDF which perfectly represents the way any surface scatters incoming light in 3D space.  



 Mini-Diff is a range of 3D Hemispherical Scattering Measurement Instruments, camera based, to characterize scattering surfaces.  It provides BRDF, BTDF and TIS measurements for Red, Green and Blue colors (RGB) or in the near InfraRed.  The hemispherical scattering intensity is imaged at once on a camera.  It also delivers the color data in reflection or transmission. 

There is also a recently announced Mini-Diff V2 for IR which offers IR at 940nm or 850nm.


​​​​​Mini-Diff V2

 ​​​is a compact and portable version and allows, in a fast and easy way, to measure luminous energy distribution and consequently characterizes surfaces.  The incident light is provided by 4 collimated LEDs  measure the BRDF and BTDF of any kind of materials and objects.  With Mini-Diff V2 you can measure in a fast and easy way, the luminous energy distribution and consequently characterizes surfaces of your examined regions such as roughness, defects as well as types of coatings or paintings and more.  


Mini-Diff VPro


 is the laboratory version of the  Mini-Diff,.  Incident angles can be chosen from 0-60 degrees for Reflective and Transmissive measurements.  The instrument has AR coated lenses and a dark box to remove stray light.  The system includes a better CMOS sensor temperature controlled improving measurement stability.  Like the Mini-Diff V2, the Mini-Diff VPro provides BRDF and BTDF and TIS measurements for Red, Green and Blue colors (RGB).  The results (relative intensity and BRDF/BTDF) can be saved in text formats, or can be exported to optical software formats.