Pro Lite Technology

CMOS-Based Imaging Photometers

Westboro Photonics CMOS SMART Series Imaging Photometer

Westboro Photonics CMOS sensor-based imaging photometers are offered with a choice of 2 to 12 mega pixel sensors for the measurement of 2D luminance (cd/m2), illuminance (lux) and view angle. The latest SMART series employ advanced CMOS sensors for higher speeds, lower noise and a wider dynamic range

Westboro Photonics SMART Series CMOS Imaging Photometers

The P230U, P501U and P1230U are high performance imaging photometers based on CMOS sensors with 2.3, 5.0 and 12.3 megapixels, respectively. These SMART Series photometers employ the latest Sony Pregius® CMOS sensors. Compared with CCD-based imagers, CMOS sensors provide for faster measurement times, exhibit a lower level of shot noise and provide a wider dynamic range. All of which promotes better quality photometric measurements.

Westboro Photonics CMOS Imaging Photometers

Measurement Capabilities

The following photometric parameters can be measured using a SMART Series CMOS imaging photometer:

  • Spatial luminance (candelas per square meter, cd/m2)
  • Spatial illuminance (lux, lx)
  • Source luminous intensity (candelas, cd)
  • View angle (as CONOMETER 80)
  • OPTIONAL radiometric measurements (radiance & irradiance)

Matched Lenses

Each photometer has a lens that is matched to the sensor resolution and size, providing optimally crisp and clear images. By matching a lens to a particluar sensor, the images created using a Westboro photometer can be of a higher quality that supposedly higher resolution cameras without matched lenses. Standard lenses offer fields of view from 10˚ to as much as 82˚. Microscope lenses are also available.

Radiometric Capabilities

Upon request, a SMART Series CMOS imaging photometer can be factory configured with a radiometric filter, which provides for measurements of irradiance and radiance. The radiometric filter replaces the standard phoopic filter, and extends the wavelength sensitivity of the camera to that of the CMOS sensor, 350-1000nm. Calibration of the imaging radiometer must be performed by the user with reference to a spot spectroradiometer which is used to measure the output from the device under test.

Superior Sensors

Using Sony’s latest Pregius® CMOS sensors, the photometric measurements are faster, more precise and more sensitive than previously possible. The specifications for dynamic range, quantum efficiency, full well capacity, sensitivity and noise are all improved. The Pregius sensors also have markedly lower noise compared to the latest CCD sensors.

High Dynamic Range

As a result of the improved noise performance and large full well capacity, a single exposure measurement can reliably report a wider dynamic range of luminance values (>70dB). Up to 1,000,000:1 dynamic range can be acquired using HDR imaging methods.

Compact Design

Weighing just 300 grammes (with a typical lens) the photometer is easier and less costly to mount. Its small footprint allows for installation into tight spaces and the locking USB3 interface cables ensure reliable connectivity.

Capable Software

Photometrica® software and optional software packages provide extensive options for measurement and analysis. The optional Photometrica Software Development Kit (SDK) allows for the creation of fully customised solutions using built-in scripting or external control. Click here for further details on Phometrica software.

Lower Power Consumption

The photometers consume <4.5W and can be powered over the USB3 cable or via the photometer’s GPIO connector. Most importantly, the low power consumption results in cooler operation and less measurement noise.

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