Optical Sensors & Detector – UV Photodetectors
Galliumphosphide (GaP) Photodetector – TOCON_GAP4GAP
TOCON_GAP4GAP – Gallium Phosphide Photodetector for Precision Blue and Near-UV Light Detection and Calibration Applications
The TOCON_GAP4GAP from SGLUX GmbH is a high-sensitivity Gallium Phosphide (GaP) photodetector designed for precise blue and near-ultraviolet (UV-A) light measurement in laboratory, industrial, and scientific environments.
It integrates a solar-blind GaP photodiode with an internal low-noise transimpedance amplifier, generating a stable and linear 0–5 V output proportional to incident irradiance.
Covering a spectral range from 150 nm to 550 nm, with a peak response around 440 nm, it ensures accurate measurement of blue and near-UV radiation while completely rejecting infrared interference.
Each sensor is factory-calibrated and traceable to NIST / PTB standards, offering reliable, reproducible results and long-term stability.
Compact, rugged, and maintenance-free, the TOCON_GAP4GAP is the perfect solution for LED testing, optical calibration, UV curing, and fluorescence excitation monitoring.
Understanding Galliumphosphide (GaP) Photodetector - TOCON_GAP4GAP
The TOCON_GAP4GAP is a precision GaP-based photodetector engineered for blue and near-UV light measurement in environments requiring high accuracy and stability.
Its GaP photodiode ensures sensitivity between 150–550 nm, with excellent IR rejection for pure spectral response.
The internal transimpedance amplifier provides a clean, linear 0–5 V analog signal, simplifying integration with SENSOR MONITOR 5.0, SGCD4, or other data-acquisition systems.
With traceable factory calibration (NIST/PTB) and a fast <1 s response time, the TOCON_GAP4GAP offers repeatable, accurate, and interference-free blue-light and UV-A measurements for optical testing, calibration, and industrial process monitoring.
Technical Specifications
| Feature | Specification |
| Function |
Gallium Phosphide (GaP) photodetector with integrated amplifier
|
| Detector Type |
GaP photodiode with internal transimpedance amplifier
|
| Spectral Range |
150 – 550 nm (visible blue and near-UV)
|
| Peak Wavelength | 440 nm |
| Output Signal |
0 – 5 V DC (linear with irradiance)
|
| Sensitivity |
High for blue and UV-A light
|
| Accuracy | ±5 % of reading |
| Response Time | < 1 s |
| Visible / IR Rejection |
Excellent IR blindness
|
| Operating Voltage | 5 – 24 V DC |
| Operating Temperature | −20 … +85 °C |
| Housing Material |
Anodised aluminium TOCON enclosure
|
| Optical Window |
UV-grade quartz or optical glass
|
| Connector |
BNC / M8 / custom cable output
|
| Calibration |
Factory-calibrated, traceable to NIST / PTB
|
| Compatibility |
SENSOR MONITOR 5.0 / VOLTCON / SGCD4 systems
|
| Applications |
Blue/UV-A light measurement, LED testing, fluorescence detection, optical calibration, and UV curing control
|
Key Features and Advantages
High Spectral Precision for Blue and UV-A Detection
The TOCON_GAP4GAP provides high accuracy across the 150–550 nm range, making it ideal for blue and near-UV monitoring in optical and photometric applications.
Infrared and Visible Red Rejection
The GaP photodiode is inherently blind to infrared and red light, ensuring that only the intended UV and blue wavelengths are measured without spectral contamination.
Integrated Low-Noise Amplifier
An internal transimpedance amplifier produces a stable 0–5 V linear output, simplifying measurement setup and eliminating the need for external electronics.
Traceable Factory Calibration
Every device is factory-calibrated and traceable to NIST / PTB, ensuring globally recognised measurement precision and repeatability.
Fast, Stable, and Reliable
The TOCON_GAP4GAP provides rapid response (<1 s), low signal drift, and high stability under variable light conditions.
Compact and Robust Construction
Built with a rugged anodised aluminium housing, it withstands demanding laboratory and industrial environments.
Easy System Integration
Compatible with SENSOR MONITOR 5.0, VOLTCON, and SGCD4, the sensor supports direct plug-and-play operation for data logging and control.
The TOCON_GAP4GAP delivers a unique balance of traceable calibration, blue/UV-A sensitivity, and infrared rejection, making it an indispensable detector for LED analysis, photometric testing, and fluorescence applications.
Applications Across Industries
LED and Light Source Testing
Measures blue and UV-A LED irradiance for optical quality assurance and intensity control in R&D and production.
Fluorescence and Photoluminescence Measurement
Monitors excitation sources in spectroscopy and bioassay systems for precise and reproducible measurements.
Optical Calibration and Radiometry
Used as a reference photodetector in laboratory calibration of light meters and radiometric instruments.
UV Curing and Coating Processes
Ensures accurate UV-A intensity monitoring for adhesives, coatings, and ink-curing applications.
Environmental and Photobiological Studies
Evaluates blue-light exposure and UV-A radiation in photobiological and environmental research setups.
Industrial Automation and Process Monitoring
Integrates into automated systems requiring real-time irradiance monitoring and light-based process control.
With traceable calibration, fast response, and high blue/UV precision, the TOCON_GAP4GAP is the sensor of choice for optical metrology, process validation, and photometric quality control.
Why Choose United Spectrum Instruments?
-
Official distributor of SGLUX TOCON_GAP4GAP in India
-
Expertise in blue and UV light measurement systems
-
Local calibration traceable to NIST / PTB standards
-
Affordable solutions for industrial, OEM, and research applications
-
Comprehensive technical support, integration, and after-sales service
FAQs
What wavelength range does the TOCON_GAP4GAP measure?
It covers 150–550 nm, with peak response near 440 nm.
Does it respond to infrared light?
No – it is IR-blind, ensuring accurate blue and near-UV detection.
Is an external amplifier required?
No, it features a built-in low-noise transimpedance amplifier with direct 0–5 V output.
Is it calibrated before delivery?
Yes – every unit is factory-calibrated and traceable to NIST/PTB standards.
How does United Spectrum support Indian customers?
Through calibration, integration, and nationwide technical support for optical and radiometric systems.
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Have Any Questions ?
FAQs
What wavelength range does the TOCON_GAP4GAP measure?
It covers 150–550 nm, with peak response near 440 nm.
Does it respond to infrared light?
No – it is IR-blind, ensuring accurate blue and near-UV detection.
Is an external amplifier required?
No, it features a built-in low-noise transimpedance amplifier with direct 0–5 V output.
Is it calibrated before delivery?
Yes – every unit is factory-calibrated and traceable to NIST/PTB standards.
How does United Spectrum support Indian customers?
Through calibration, integration, and nationwide technical support for optical and radiometric systems.
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