Gamma Scientific offers high-accuracy photometer and radiometer systems based on our TIA-3000 transampedance amplifier technology. These systems deliver state of the art performance to the most exacting clients in research and advanced metrology.
Our UDT Instruments division offers a line of photometer and radiometer components to meet the industrial need for simple, practical, and reliable optical measurements. This line includes a range of optometers, photosensors, and photosensor accessories. Our newest addition to this line is the flexOptometer, which incorporates TIA-3000 technology in a self-contained, robust benchtop package.
Our line of standard photometric and radiometric systems, as well as system components, is presented below.
FlexOptometer: Base instrument for our benchtop Photometers and Radiometers.
TIA-3000 Measurement Systems: State of the art photo-/radiometer systems. NIST-traceable cals.
NVG-4040 NVIS Radiometer: Measures NVIS radiance (A,B,C) and luminance. High-end portable.
UDTi Handheld Optometers: Exceptional performance in a portable, handheld package.
UDTi Photosensors & Accessories: For almost any photometric or radiometric measurement
System Configuration
An optometer measures the photocurrent produced by a photometric or radiometric sensor, applies a predefined electro-optical calibration factor, and displays the result in optical units. A photometer system is built by coupling an optometer to a photometric sensor; a radiometer system is built by coupling an optometer to a radiometric sensor.
Each type of sensor can be combined with various types of optical adaptors to form sensor head assemblies, each suitable for a different types of measurement
Photometric Measurements
- Luminous Flux – in lumens (lm)
- Luminous Intensity (lm/sr)
- Illuminance (lm/m2)
- Luminance (lm/m2sr)
Radiometric Measurements
- Radiant Flux (Watt)
- Radiant Intensity (W/sr)
- Irradiance (W/m2)
- Radiance (W/m2sr)
To simplify the selection of available options, UDTi has defined a set of standard bundles, which provide a representative sample of the range of solutions available. These bundles are presented by application on the UDTi website







