The Micro-Spot Variable-Angle Transmittance Spectrometer(μVATS)is an optical transmission spectral measurement system designed to measure angle-resolved optical spectral transmittance through microscopic regions of optical materials and surface coatings. Unlike conventional optical transmittance measurement systems that require large, flat samples, the μVATS delivers high-precision spectral measurements on micro-scale spots in the range from 5 μm to 200 μm, enabling accurateangle-resolved characterization of micro-structured, free-formcurved, and spatially non-uniform coating surfaces.

                                                                                       Product Manual：

Variable-Angle Micro-Spot Measurement

Small spot size(1/e):5 μm-200 μm

Incident angle range: 0° to 70°

Angular resolution: ≤ 0.5°

Transmittance accuracy: < 0.02%

Fast and Automated Scanning

Programmable angle sweeps

High-throughput spectral acquisition

Batch measurement suppor

Wavelength Range

Standard: 350 nm-1000 nm

Optional: 200 nm -2500 nm

Spectral resolution: 0.25 nm (typical)

Software & Data Analysis

Real-time spectral visualization

Angle-resolved transmittance maps:T(λ. θ)

Export to CSV/ MATLAB / Python

Optional thin-film thickness and material analysis

Biomedical Device and Optical Coatings

Angle-sensitive optical coatings

Endoscope optics(curved surfaces)

Micro-sample optical absorption spectroscopy

AR/VR Display and Semiconductor

Micro-optical device coatings for AR/VR

ITO, oxide, and multilayer films

Micro-LED coatings and structures

Wafer-level thin films

Optical packaging

Advanced Photonics

Metasurfaces

Diffractive optics

Liquid crystal device