Photodetector

UDT Instruments, a Gamma Scientific company, produces precision photodetectors for diverse photometric and radiometric applications. UDTi photodetectors are ideally suited for OEMs, value-added resellers and any company that is interested in accurately measuring light intensity and brightness.

UDTi photometric sensors are designed with advanced photometric filters to simulate the response of the human visual system and match the spectral response of a standard observer. When coupled with an optometer, photodetectors are used to measure luminous flux(lm), illuminance(lux), luminous intensity(cd) and luminance(cd/m²).

Radiometric Sensors from UDT Instruments can be combined with an optometer to take radiometric measurements.

Request a Quote

 

The UDT Instruments Photodetector Advantage

  • UDTi designs the most accurate photometric filters in the world, with an unsurpassed ability to match the human eye’s sensitivity to color and light intensity
  • Each UDTi sensor includes a NIST-traceable calibration
  • UDTi also manufactures high-performance optometers and integrating spheres to create complete photometric and radiometric test systems
  • Optical Sensors from UDT Instruments have been developed for maximum compatibility with your existing optical measurement systems

Photodetector Resources

Photometric Sensors Applicaations

  • Luminous Flux Measurements (in units of lumens) for characterizing the total output of sources such as: LEDs, Lamps and Fiber-Optic Illuminators.
  • Illuminance Measurements (in units of lux) for measuring the amount of luminous flux incident upon a surface in architectural design and the medical field.
  • Luminous Intensity Measurements (in units of candela) for characterizing the output of a small source in a specific direction. This type of testing is applicable for LEDs, Automobile Headlamps and Signal Lamps.
  • Luminance Measurements (in units of nits or candela per square meter) for measuring the light emitted in a particular direction by a given spot on the surface of an extended source. This type of testing is applicable for: Computer Monitors, Television Screens, Avionics Displays and Large Electronic Displays.

Photometric Sensor Models from UDTi (including photometric filter and cosine diffuser)

Radiometric Sensor Applications

Radiometry is a broad discipline, involving the measurement of electro-magnetic radiation in terms of physical power. Radiometers measure light as a physical quantity/unit in terms of radiant flux(W), irradiance(W/m²), radiant intensity (w/sr) and radiance(W/m²sr). Radiometric application include:

  • Radiant Flux Measurements (in units of watts) for characterizing the total output of sources such as: LEDs, Lasers, Lamps and Fiber-Optic Systems.
  • Irradiance Measurements (in units of W/m²) for measuring the radiant flux incident upon a surface, per unit area in the following fields: Medical, Biological and Remote Sensing.
  • Radiant Intensity Measurements (in units of W/sr) for characterizing the output of a relatively small source in a particular direction to test LEDs, UV Lamps and IR Lamps.
  • Radiance Measurements (in units of W/m²sr) for measuring the light emitted in a particular direction by a given spot on the surface of an extended source. These measurements are important in fields such as: Remote Sensing, Avionics and Night Vision.

Radiometric Sensor Models from UDTi (basic unfiltered sensors)

Optometers

The UDT Instruments flexOptometer is a high-performance optometer designed to operate as a photometric, radiometric or fiber optic measurement tool. The new model is available with a single head or four interchangeable detector heads, and easily integrates into existing lab instrument architectures.

UDT Instruments also produces high-quality, handheld optometers for photometric, radiometric and fiber-optic measurements. The Model S471 portable optometer is specifically designed to be used in the field or a laboratory setting.

Each optometer system is fully compatible with all UDTi sensor heads in any configuration

Optical Accessories

Photosensors can be equipped with various types of optical accessories to form sensor head assemblies suitable for diverse types of measurements. UDT Instruments offers a range of preconfigured sensor heads, as well as the following optical components to enable configuration of custom sensor heads for the measurement of flux, illuminance, irradiance, intensity, luminance, or radiance.