Radiometric Sensors

UDT Instruments, a Gamma Scientific company, produces precision radiometric sensors for a wide range of radiometric testing applications.

UDTi radiometric sensors are ideally suited for OEMs, value-added resellers and any company that is interested in accurately measuring light intensity and brightness.

When coupled with an optometer, these sensors are used to measure radiant flux, irradiance, radiant intensity and radiance.

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Measurement Applications
  • Radiant Flux Measurements
  • Irradiance Measurements
  • Radiant Intensity Measurements
  • Radiance Measurements
Photometric Sensors
  • Luminous Flux Measurements
  • Illuminance Measurements
  • Luminous Intensity Measurements
  • Luminance Measurements
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Model 221 Silicon Sensor Head

Model 221 Silicon Sensor Head

The Model 221 is UDTi’s basic silicon sensor. It can be adapted for use with Standard Series accessories.

  • Standard Calibration(s): Watt
  • Sensor Active Area (cm2): 1
  • Dynamic Range: 5.0E-11 – 2.4E-03 W
  • Calibration Range: 350 – 1100 nm in 10 nm steps
  • Typical Response: 5.1E-01 A/W @980 nm
  • Features: High linearity; low noise
  • Peak Wavelength (nm): *
  • Compatible Components: All Standard Series accessories. (Filters; diffusers; integrating spheres; spacers; etc.)
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Model 222 UV Sensor Head

Model 222 UV Sensor Head

The Model 222 is a Standard Series silicon UV sensor calibrated in the UV region (200 – 400 nm).

  • Standard Calibration(s): Watt
  • Sensor Active Area (cm2): 1
  • Calibration Range: 200 – 400 nm in 10 nm steps
  • Dynamic Range: 100E-12 – 7.2E-03 Watts
  • Typical Response: 1.65E-01 A/W @400 nm
  • Features: High linearity; low noise
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Model 247 Flat Response Sensor Head

Model 247 Flat Response Sensor Head
The Model 247 is UDTi’s Standard Series flat response radiometric sensor. It can be adapted for use with Standard Series accessories.

  • Standard Calibration(s): Watt
  • Sensor Active Area (cm2): 1
  • Dynamic Range: 1.3E-10 – 6.4E-03 W
  • Calibration Range: 350 – 1100 nm in 10 nm steps
  • Typical Response: 1.9E-01 A/W @630 nm
  • Features: Precision Radiometric Filter
  • Spectral Flatness: 5%-7% over the spectral range: 450-950 nm
  • Compatible Components: Standard Series Accessories (diffusers, integrating spheres, spacers, etc.)
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Model 260 Silicon Sensor Head - Miniature

Model 260 Silicon Sensor Head Miniature

The Model 260 is UDTi’s Miniature Series silicon sensor. It can be adapted for use with Miniature Series integrating spheres and other accessories.

 

  • Standard Calibration(s): Watt
  • Sensor Active Area (cm2): 0.34
  • Dynamic Range: 5.0E-11 – 1.5E-03 W
  • Calibration Range: 350 – 1100 nm in 10 nm steps
  • Typical Response: 5.1E-01 A/W @980 nm
  • Features: High linearity; low noise. Small package design.
  • Peak Wavelength (nm): *
  • Compatible Components: All Miniature Series accessories. (Filters; diffusers; integrating spheres; spacers; etc.)
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Model 261 Germanium Sensor Head

Model 261 Germanium Sensor Head

The Model 261 is UDTi’s Germanium (Ge) sensor. It can be adapted for use with Miniature Series integrating spheres and other accessories.

  • Standard Calibration(s): Watt
  • Sensor Active Area (cm2): 0.5
  • Dynamic Range: 5.0E-10 – 6.0E-03 W
  • Calibration Range: 800 – 1750 nm in 10 nm steps
  • Typical Response: 7.6E-01 A/W @1300 nm
  • Features: Responsive over a range of telecommunication wavelengths.
  • Peak Wavelength (nm): *
  • Compatible Components: Miniature Series integrating spheres; and Standard series integrating spheres (with Model 1718 step-up adaptor )
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Model 262 Flat Response Sensor Head - Miniature

Model 262 Flat Response Sensor Head Miniature

The Model 262 is UDTi’s Miniature Series flat response radiometric sensor. It can be adapted for use with Miniature Series accessories.

  • Standard Calibration(s): Watt
  • Sensor Active Area (cm2): 0.34
  • Dynamic Range: 1.3E-10 – 4.0E-03 W
  • Calibration Range: 350 – 1100 nm in 10 nm steps
  • Typical Response: 1.9E-01 A/W @630 nm
  • Features: Precision Radiometric Filter
  • Peak Wavelength (nm): *
  • Compatible Components: Miniature Series accessories (diffusers; integrating spheres; spacers; etc.)
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Model 264 Laser Sensor Head

Model 264 Laser Sensor Head

The Model 264 is a Miniature Series sensor specifically designed for laser power measurement. It consists of a Model 260 type sensor with a built-in diffuser and reduced aperture for attenuation of optical power.

  • Standard Calibration(s): Watt – at single user-specified wavelength (350 – 1100 nm)
  • Aperture Diameter (mm): 7
  • Dynamic Range: 3.5E-08 – 4.0E-02 W
  • Typical Response: 2.4E-03 A/W @630 nm
  • Features: Laser Attenuator (diffuser)
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Model 280 InGaAs Sensor Head

Model 280 InGaAs Sensor Head

The Model 280 is UDTi’s Indium-Gallium-Arsenide (InGaAs) sensor. It can be adapted for use with Miniature Series integrating spheres and other accessories.

  • Standard Calibration(s): Watt
  • Aperture Diameter (mm): 3
  • Dynamic Range: 1.4E-04 – 2.2E-03 W
  • Calibration Range: 800 – 1750 nm in 10 nm steps
  • Typical Response: 9.5E-01 A/W @1550 nm
  • Features: Dynamic range: -8.5 to +3.5 dBm. Very low noise. Optimal sensor for measurement at 1550 nm.
  • Compatible Components: Miniature Series integrating spheres; and Standard series integrating spheres (with Model 1718 step-up adaptor )
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Model 268LP Laser Sensor Head - Low Profile

Model 268LP Laser Sensor Head Low Profile
The Model 268LP is a low-profile series Laser Sensor Head with a radiometric flat response. It is equipped with a diffuser and 4.5 inch “lollipop”-style handle.

  • Standard Calibration(s): Watt
  • Sensor Active Area (cm2): 1
  • Dynamic Range: 7.0E-10 – 6.0E-02 W
  • Calibration Range: 350-1100nm in 10nm steps
  • Typical Response: 2.70E-02 A/W @630nm
  • Features: Precision Flat Radiometric Filter
  • Spectral Flatness: 5%-7% over the spectral range: 450-950nm
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Model 268R Flat Response Sensor Head - Low Profile

Model 268R Flat Response Sensor Head Low Profile

The Model 268R is a Low-Profile Series flat response radiometric sensor.

  • Standard Calibration(s): Power (W) at user-specified wavelength
  • Sensor Active Area (cm2): 1
  • Dynamic Range: 1.3E-10 – 6.0E-03 W
  • Calibration Range: 350 – 1100 nm in * nm steps
  • Typical Response: 2.0E-01 A/W @633 nm
  • Features: Radiometric Filter; 4.5 inch “lollipop”-style handle.
  • Spectral Flatness: 5%-7% over the 450 – 950 nm range
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Model 268UVA Optimized Sensor Head

Model 268UVA Optimized Sensor Head

The Model 268UVA is a Low-Profile Series radiometric sensor optimized for measurements in the UVA region (320 – 400 nm)

  • Standard Calibration(s) – Irradiance (W/cm²) at 365 nm
  • Sensor Active area (cm2) – 1
  • Aperture Diameter (nm) – 18
  • Dynamic Range – 5.0E-10 – 1.0E-01 W/cm²
  • Typical Response – 2.0E-02 A/W/cm² @365 nm
  • Features – 365 nm Bandpass Filter; internal opal glass diffuser
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Model 268UVC Optimized Sensor Head

Model 268 UVC Optimized Sensor Head

The Model 268UVC is a Low-Profile Series radiometric sensor optimized for measurements in the UVC region (200 – 280 nm).

  • Standard Calibration(s) – Irradiance (W/cm²) at 254 nm
  • Sensor Active area (cm2) – 1
  • Aperture Diameter (nm) – 11
  • Dynamic Range – 5.0E-08 – 5.0E-01 W/cm2
  • Typical Response – 2.4E-03 A/W/cm2 @254 nm
  • Features – 254 nm Bandpass Filter; internal Teflon diffuser
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Model 268BLUE UV/Blue Optimized Sensor Head

Model 268 UV-Blue Optimized Sensor Head

The Model 268BLUE is a Low-Profile Series radiometric sensor optimized for measurements in the blue region centered at 450nm.

  • Standard Calibration(s) – Irradiance (W/cm2) at 450 nm
  • Sensor Active area (cm2) – 1
  • Dynamic Range – 5.0E-10 – 5.0E-02 W/cm2
  • Typical Response – 3.1E-02 A/W/cm2 @450 nm
  • Features – 450 nm Bandpass Filter; Cosine Diffuser
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Model S2575 Silicon Sensor/Minisphere

Model S2575 Silicon Sensor-Minisphere

The Model S2575 consists of a Model 260 Silicon sensor coupled to a Model 2575 Integrating sphere.

  • Standard Calibration(s): Power (W) at user-specified wavelength
  • Dynamic Range: 3.0E-08 – 9.5E-01 W
  • Calibration Range: 450 – 1100 nm in * nm steps
  • Typical Response: 1.7E-03 A/W @940 nm
  • Features: Mini Integrating Sphere
  • Sphere Diameter (mm): 50
  • Entrance Aperture Diameter (mm): 5
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Model S2575GE Germanium Sensor/Minisphere

Model S2575 Germanium Sensor-Minisphere
The Model S2575GE consists of a Model 261 Germanium sensor coupled to a Model 2575 Integrating sphere.

  • Standard Calibration(s): Power (W) at 1300 nm and 1550 nm
  • Dynamic Range: 3.0E-09 – 1.6E+00 W
  • Calibration Range: 800 – 1750 nm in * nm steps
  • Typical Response: 1.9E-03 A/W @1300 nm
  • Features: Mini Integrating Sphere
  • Sphere Diameter (mm): 50
  • Sphere Diameter (mm): 5
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Model S2575R Flat Response Sensor/Minisphere

Model S2575R Flat Response Sensor-Minisphere

The Model S2575R consists of a Model 262 Flat-reponse sensor coupled to a Model 2575 Integrating sphere.

  • Standard Calibration(s): Power (W) at user specified wavelength
  • Dynamic Range: 6.0E-08 – 1.8E+00 W
  • Calibration Range: 350 – 1100 nm in * nm steps
  • Typical Response: 9.0E-04 A/W @740 nm
  • Features: Radiometric Filter; Mini Integrating Sphere
  • Sphere Diameter (mm): 50
  • Sphere Diameter (mm): 5
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