Optical Sensors & Detector – UV Calibration
UV Transmission Measurements
High-Precision UV Transmission Measurement System for Optical Materials, Coatings, and UV Transparent Components
The UV Transmission Measurement System is a high-accuracy instrument for determining the ultraviolet transmittance of optical materials, coatings, and transparent components across UVC, UVB, and UVA spectral ranges. Using a stabilised UV source, calibrated reference detectors, and precision optics, the system measures the percentage of UV radiation transmitted through a sample, providing quantitative data on absorption, reflection, and transmission properties. It supports both normal-incidence and angular transmission testing, ideal for lenses, filters, glass, quartz, and polymer sheets. Each setup is traceable to NIST/PTB standards, ensuring reproducibility and compliance with ISO, ASTM, and IEC optical testing procedures. Designed for R&D, quality control, and certification laboratories, this system is widely used in photonics, solar, biomedical, and material science industries where UV transparency and stability are critical to performance.
Understanding UV Transmission Measurements
The UV Transmission Measurement System evaluates how much ultraviolet radiation passes through a material, helping researchers assess optical clarity, coating uniformity, and UV protection performance. A stabilised UV beam passes through the sample and is measured by calibrated detectors before and after transmission. The system calculates transmittance (T%), absorbance (A), or optical density (OD) across selected wavelengths (200–400 nm). Results are displayed graphically as transmission curves or exported for material characterisation. Traceability to NIST/PTB calibration standards ensures precision, making the system essential for validating materials used in UV sensors, solar optics, medical devices, and protective coatings.
Technical Specifications
| Feature | Specification |
| Measurement Parameter |
UV Transmission (%) / Absorbance (A) / Optical Density (OD)
|
| Spectral Range |
200 – 400 nm (UVC / UVB / UVA)
|
| Light Source |
Deuterium / Xenon / LED UV Lamp (stabilised)
|
| Spectral Bandwidth |
1 – 5 nm (adjustable via monochromator)
|
| Detector Type |
SiC or GaP Photodiode (NIST/PTB calibrated)
|
| Reference Channel |
Dual-beam for automatic baseline correction
|
| Transmission Accuracy | ±1 % of reading |
| Wavelength Accuracy | ±0.5 nm |
| Measurement Geometry |
0° / 8° / custom incidence angle (optional)
|
| Sample Thickness Range | 0.1 – 25 mm |
| Sample Holder |
Quartz mount / adjustable fixture / integrating sphere (optional)
|
| Data Output |
Transmission Curve (% vs nm)
|
| Software Features |
Live spectrum plot, absorbance conversion, data export (CSV/PDF)
|
| Calibration Standard |
Traceable to NIST / PTB
|
| Power Supply | 230 V AC / 50 Hz |
| Operating Temperature |
20 – 25 °C (stabilised lab conditions)
|
Key Features and Advantages
Broad UV Spectral Coverage
Measures transmission accurately from 200 nm to 400 nm, covering UVC, UVB, and UVA regions relevant to industrial and scientific applications.
Traceable Calibration and Accuracy
Each detector and optical path is calibrated to NIST/PTB reference standards, ensuring repeatability and confidence in certified optical data.
Dual-Beam Configuration
Simultaneous reference and sample measurement eliminate light-source drift, providing high-precision baseline stability.
Flexible Optical Geometry
Supports both normal incidence (0°) and angled transmission, allowing evaluation of anti-reflection or coated optics under realistic conditions.
Advanced Software Analysis
Integrated software performs spectral scanning, real-time transmission plotting, absorbance conversion, and automatic reporting for research and QA documentation.
Stable, Uniform Illumination
A regulated UV source with temperature-controlled optics ensures consistent irradiance across the test area.
Versatile Material Compatibility
Suitable for glass, quartz, polymers, films, filters, and coatings, enabling both R&D characterisation and production QC.
Compliance with International Standards
Fulfils ISO 9050, ASTM E903, and IEC 60904 requirements for optical transmission and solar simulation testing.
By combining spectral accuracy, stability, and software intelligence, this system provides reliable UV transmission data for optical material development and quality assurance.
Applications Across Industries
Optical Material Development
Determines UV transmission and absorption properties of optical glasses, filters, and coatings during material design.
Solar and Photovoltaic Research
Measures UV transparency of encapsulants, glass covers, and coatings to optimise solar module efficiency.
Biomedical and Sterilisation Devices
Evaluates UV window materials for disinfection chambers, medical sensors, and analytical instruments.
Coating and Film Industry
Analyses UV protective layers, varnishes, and films used in automotive, packaging, and architectural sectors.
Aerospace and Defence
Tests radiation resistance of polymers and optical components used in high-altitude or space environments.
Academic and Metrology Laboratories
Supports spectral characterisation of UV optics, photodiodes, and thin-film materials with traceable calibration.
By delivering accurate spectral transmission data, the UV Transmission Measurement System ensures compliance, performance verification, and long-term reliability for industrial and scientific optical applications.
Why Choose United Spectrum Instruments?
-
Exclusive distributor of precision UV measurement and calibration systems in India
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Traceable calibration support aligned with NIST/PTB metrology standards
-
Expertise in optical characterisation, data acquisition, and spectral analysis systems
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Competitive pricing for R&D, OEM, and industrial QA setups
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Nationwide technical service, software training, and annual recalibration support
FAQs
What does the system measure?
It quantifies UV transmittance, absorbance, and optical density across 200–400 nm wavelengths.
Which materials can be tested?
Glass, quartz, plastics, optical filters, thin films, and coated substrates.
How accurate are the results?
Each measurement is traceable to NIST/PTB standards with ±1 % accuracy.
Can angle-dependent measurements be made?
Yes, adjustable fixtures enable 0° to 8° or custom-angle testing.
How does United Spectrum support Indian customers?
By offering certified calibration, local technical guidance, and nationwide service with quick delivery.
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FAQs
What does the system measure?
It quantifies UV transmittance, absorbance, and optical density across 200–400 nm wavelengths.
Which materials can be tested?
Glass, quartz, plastics, optical filters, thin films, and coated substrates.
How accurate are the results?
Each measurement is traceable to NIST/PTB standards with ±1 % accuracy.
Can angle-dependent measurements be made?
Yes, adjustable fixtures enable 0° to 8° or custom-angle testing.
How does United Spectrum support Indian customers?
By offering certified calibration, local technical guidance, and nationwide service with quick delivery.
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