Custom Measurement Systems

Custom Laboratory Instruments

Construction of custom laboratory instruments for various optical measurement purposes:

• Laser power measurement
• LED power measurement
• Fluorescent detection of liquids and solids
• Photometric measurements
• Spectroradiometric measurements
• Homogeneity measurements
• Reflection and transmission measurements

Our Custom-Developed Measurement Systems

Chromatic-Confocal 3D Profilometer

The principle of chromatic-confocal distance measurement is based on chromatic aberration, which results from the wavelength dependence of the refractive index of glass. Utilizing this phenomenon, an optical arrangement can be constructed in which a broad-wavelength light beam passing through a lens with high chromatic aberration forms different focal points for its various wavelength components. If a well-reflecting object enters this focal range, the wavelength in the best focus reflects with the highest intensity, thus the geometrical distance from the lens can be determined from the wavelength position of the peak intensity in the reflected spectrum.

Our device differs from commercially available industrial systems in that it uses a high spatial coherence, high-intensity superluminescent light source for illumination, achieving 3-4 orders of magnitude higher intensity. This allows for the examination of poorly reflective, diffuse, matte, and highly absorptive surfaces, such as rubber, surfaces with anti-reflective coatings, etc.

The device, mounted on a 3D, 5-degree-of-freedom moving stage, is capable of full-surface profilometric measurements. For internal surface inspections, custom-designed beam-turning mirrors enable the examination of internal surfaces with diameters less than 15 mm.

Key parameters of the device:

• Sample size: 100 x 100 x 100 mm (expandable with appropriate modifications and custom holders)
• Lateral (x-y) resolution: 2 µm
• Vertical (z) resolution: 0.1 µm
• Vertical measurement range: 350 µm

Scattering Characteristic (BRDF) Analyzer

Determining the optical scattering characteristics of surfaces at arbitrary wavelengths. The instrument produces a scattering distribution function, the BRDF, for the given sample. If the task is to fit materials with unknown scattering characteristics into a simulation environment, the device can generate the necessary descriptive file within a few hours if the material sample is available.

Key parameters:

• Measurement angle range: 180° (incidence angle) x 360° (rotation)
• Minimum angle resolution: 1°
• Dynamic range: 10 nW - 10 mW

Objective Testing System

An alignment system (alignment target and camera) and software for testing custom-made lenses.

In-line Photometer

An in-line photometer for process control and monitoring, suitable for laboratory-precision measurements in cylindrical-walled cuvettes and test tubes.

Key parameters:

• Wavelength range: 400-700 nm (6 selectable bandpass filters)
• Absorbance range: 0 - 2 Abs
• Reproducibility: ±0.005 Abs
• Dimensions: 100x100x70 mm
• Weight: 1030 g

Handheld Fluorimeter

The device is suitable for detecting the spectral response of fluorescent dyes under different UV excitations.

Key parameters:

• Wavelength range: 340-850 nm
• Spectral resolution: 15 nm
• Weight: 280 g
• Dimensions: 65x65x90 mm
• Excitation: UV-A, UV-C
• Interface: USB

Automated, Rack-Mountable Fluorimeter

Capturing the fluorescent response of liquids at multiple wavelengths under various excitations with ultra-high sensitivity. The module can be mounted in a large-capacity car or van, functioning as a mobile lab.

Key parameters: - Wavelength range: Xenon excitation lamp 250 nm - 1000 nm - Sensitivity: Molecular sensitivity with PMT detector, capable of detecting a single fluorescent particle in a standard 10 x 10 mm quartz cuvette - Measurement volume: Standard 10 x 10 mm cuvette or flow-through 30 x 100 mm cylindrical cuvette - Wavelength resolution: 0.1 nm with spectrometer detection, defined by bandpass filters with PMT

ELISA Fluorimeter

Automated measurement system for capturing the fluorescent response of liquids placed in ELISA plates.

Key parameters:

• Excitation wavelengths: 450, 530, 630 (replaceable, additional light sources installable)
• Detection wavelengths: Visible and NIR, with fluorescent bandpass filters
• Sensitivity: 100 pW -