HARDWARE / PRODUCTUpdated 24 Jul 2026

SOC-210 Bidirectional Reflectometer

Surface Optics Corporation
SOC-210 Bidirectional Reflectometer

The SOC-210 BDR is an automated goniometer designed for precise and comprehensive measurement of Bidirectional Reflectance Distribution Function (BRDF) and Bidirectional Transmittance Distribution Function (BTDF) of various materials across a spectral range of 0.35 to 14μm.

Key figurescomparable across the catalogue

Largest dimension
1,905 mm

Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.

As published by the supplier

Spectral range
0.35-14 micron
Incident polar angle
0-85 degrees
Incident azimuth angle
0-360 degrees
Reflected polar angle
0-85 degrees
Reflected azimuth angle
0-360 degrees
Sample size
1-inch dia standard, up to 4-inch square max
Detectors
Si (0.4-1.1 micron), InGaAs (1.0-1.7 micron), InSb (2.5-5.0 micron), MCT (7.0-14.0 micron)
Noise floor
< 10^-3 ster^-1
Dimensions
53in W x 53in D x 75in H
Power
120VAC 10 A
Automation
Full PC control of incident/reflected polar and azimuth angles, aperture, ND filter wheel, sample stage

About

The SOC-210 BDR is an advanced, automated bidirectional reflectometer capable of measuring the BRDF/BTDF of surfaces, paints, coatings, liquids, and particles. It operates across a broad spectral range from 0.35 to 14μm, utilizing interchangeable sources, spectral bandpass filters, and detectors. The system achieves complete hemispherical coverage by varying both incident and reflected polar and azimuth angles. Designed for automated operation, it can collect BSDF data unattended for extended periods. Its PC-based control and data acquisition system manages data collection, processing, and archiving, offering full automation for all four goniometric coordinates, switching between calibration references and samples, and configuring source aperture, neutral density filter wheel, and polarization stages. The 210-BDR ensures accurate BSDF measurements through calibration with a diffuse reflectance reference, automatically correcting beam non-uniformity. It is the only commercially available goniometer that extends to the Long Wave Infrared (LWIR) region, with pre-aligned source and detector modules (Silicon: 0.4-1.1 um, InGaAs: 1.0-1.7 um, InSb: 2.5-5.0 um, MCT: 7.0-14.0 um) that can be interchanged without realignment. The intuitive control software facilitates seamless sample selection, measurement setup, calibration, data acquisition, and storage, allowing users to customize measurement angles and view real-time BSDF data. The advanced receiver subsystem features a versatile range of individual interference spectral filters, including wide-band and thin film filters, compatible with standard 1″ OD bandpass filters from various vendors, positioned in front of the detector to minimize background spectral noise. Surface Optics Corporation (SOC) has over 40 years of experience in BRDF measurement services, with the SOC-210 BDR being the 4th generation lab bidirectional reflectometer manufactured by the company, used daily in SOC’s Optical Properties Measurements Lab.

Documentation

Need the full ICD, test reports or a specific revision? Ask the supplier directly.

Source: surfaceoptics.com ↗

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