Westboro Photonics Smart Series imaging photometers are offered with a choice of between 2.3 to 12.3 Megapixel CMOS sensors for the measurement of 2D luminance, illuminance and view angle. The Smart series employs advanced CMOS sensors for higher speeds, lower noise and a wider dynamic range for applications in automotive and avionics displays and controls, in vehicle lighting, near-to-eye displays, flat panel displays, lit area uniformity of lighting products and in projected beam pattern analysis of lamps and LEDs. Westboro Photonics is an ISO/IEC 17025:2017 accredited calibration laboratory, being the first company in the world to be accredited for the calibration of imaging light meters, as distinct from spot photometers.
Westboro Photonics Smart Series CMOS Imaging Photometers
The Westboro Photonics Smart series imaging photometers are available in the following versions:
Model | Sensor | Radiometric Response | Near-to-Eye Lens | View Angle Lens |
P230U | 2.3 Megapixel | Optional | Optional | Optional |
P501U | 5 .0 Megapixel | Optional | Optional | Optional |
P1230U | 12.3 Megapixel | Optional | Optional | Optional |
Measurement Capabilities
The following photometric and radiometric parameters can be measured using a Smart series CMOS imaging photometer:
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 particular sensor, the images created using a Westboro photometer can be of a higher quality than supposedly higher resolution cameras without matched lenses. Standard lenses offer fields of view from 10˚ to as much as 82˚. Microscope lenses are available for pixel-level analysis, while near-to-eye lenses are also available for testing the displays on wearable AR devices. A conoscopic lens accessory is also available for display view angle testing.
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 photopic 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 software development kit (SDK) allows for the creation of fully customised solutions using built-in scripting or external control.
Accredited Calibrations
Westboro Photonics is an ISO/IEC 17025:2017 accredited calibration laboratory, being the first company in the world to be accredited for the calibration of imaging light meters, as distinct from spot photometers.
| P230U | P501U | P1230U |
Sensor | Sony Pregius IMX174 | Sony Pregius IMX250 | Sony Pregius IMX253 |
Sensor Type | 12-bit, CMOS sensor, 1.5” diagonal, 5.86μm pixel size | 12-bit, CMOS sensor, 2/3” diagonal, 3.45μm pixel size | 12-bit, CMOS sensor, 1.1” diagonal, 3.45μm pixel size |
Sensor Size | 2.3 Megapixels | 5.0 Megapixels | 12.3 Megapixels |
Pixel Array Size | 1920 x 1200 | 2448 x 2048 | 4096 x 3000 |
Full Well (-e) | 32,500 | 10,200 | 10,200 |
System Dynamic Range (single exposure) | 73 dB | 71 dB | 71 dB |
High Dynamic Range (multi-exposure) | > 1,000,000:1 | > 1,000,000:1 | > 1,000,000:1 |
Photometric Performance |
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Photometric Measurement Capabilities | Luminance (cd/m2) | Luminance (cd/m2) | Luminance (cd/m2) |
Minimum Detectable Luminance (cd/m2) | 0.0001 | 0.0001 | 0.0001 |
Minimum Luminance (cd/m2, SNR = 60) | 0.002 | 0.002 | 0.002 |
Minimum Luminance (cd/m2, SNR = 100) | 0.003 | 0.003 | 0.003 |
Maximum Luminance (cd/m2, no ND) | 600,000 | 2,000,000 | 2,000,000 |
Luminance Uncertainty (illuminant A) | ±3% | ±3% | ±3% |
Lens Options |
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Near-to-Eye (5mm pupil) | 8mm NED | 8mm NED | 8mm NED |
Standard Lenses (see datasheet for field-of-view) | 12mm | 8mm | 12mm |
Calibrated Iris Positions | Two of: F1.4, F/2.8, F/4 & F/8 | Two: typically F/2 & F/16 | Two: typically F/2 & F/16 |
Other Specification |
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Communication Interface | USB 3.0 | USB 3.0 | USB 3.0 |
Dimensions (H x W x D, excluding lens) | 44 x 29 x 58mm | 44 x 29 x 58mm | 44 x 29 x 58mm |
Weight (without lens) | 110g | 110g | 110g |
Weight (with lens) | Typ. 200-350g | Typ. 200-350g | Typ. 200-350g |
Operating Temperature (for specifications) | 18-24°C | 18-24°C | 18-24°C |
Operating Humidity | 10-90% (non-condensing) | 10-90% (non-condensing) | 10-90% (non-condensing) |
Smart Series Model | Standard Scope of Supply |
P230U | High speed, 2.3 MP, photometric image analysis system featuring a CMOS 1/1.2″ sensor with 12-bit A/D, photopic spectral correction, USB3 interface, PCIe USB3 card, communications cable, perpetual Photometrica and SDK software licences, one year software support and a two-year hardware warranty. |
P501U | High speed, 5.0 MP, photometric image analysis system featuring a CMOS 2/3″ sensor with 12-bit A/D, photopic spectral correction, USB3 interface, PCIe USB3 card, communications cable, perpetual Photometrica and SDK software licences, one year software support and a two-year hardware warranty. |
P1230U | High speed, 12.3 MP, photometric image analysis system featuring a CMOS 1.1″ sensor with 12-bit A/D, photopic spectral correction, USB3 interface, PCIe USB3 card, communications cable, perpetual Photometrica and SDK software licences, one year software support and a two year hardware warranty. |
Options | |
R230U/R501U/R1230U | Radiometer versions of standard imaging photometers. Calibration with illuminant A in W/m2.sr with one lens. Recommended for relative measurements only. |
Lenses for P230U |
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LS-12 (1”, 2MP) | 12mm lens for P230U. 1″ format lens, available F1.4/F2.8/F4/F8 interchangeable iris plates, and two-way reversible nut for focus adjustment. Calibrated at a choice of two iris settings, and up to four focus distances between 25 – 200cm. Standard focus distances: 25, 50, 75 & 100cm. Standard irises: F1.4 & F8. |
LS-16 (1”, 2MP) | 16mm lens for P230U. 1″ format lens, available F1.4/F2.8/F4/F8 interchangeable iris plates, and two-way reversible nut for focus adjustment. Calibrated at a choice of two iris settings, and up to four focus distances between 30 – 200cm. Standard focus distances: 30, 50, 75 & 100cm. Standard irises: F1.4 & F8. |
LS-25 (1”, 2MP) | 25mm lens for P230U. 1″ format lens, available F1.4/F2.8/F4/F8 interchangeable iris plates, and two-way reversible nut for focus adjustment. Calibrated at a choice of two iris settings, and up to four focus distances between 30 – 200cm. Standard focus distances: 25, 50, 75 & 100cm. Standard irises: F1.4 & F8. |
LS-35 (1”, 2MP) | 35mm lens for P230U. 1″ format lens, available F1.4/F2.8/F4/F8 interchangeable iris plates, and two-way reversible nut for focus adjustment. Calibrated at a choice of two iris settings, and up to four focus distances between 25 – 200cm. Standard focus distances: 30, 50, 75 & 100cm. Standard irises: F1.4 & F8. |
LS-50 (1”, 2MP) | 50mm lens for P230U. 1″ format lens, available F1.4/F2.8/F4/F8 interchangeable iris plates, and two-way reversible nut for focus adjustment. Calibrated at a choice of two iris settings, and up to four focus distances between 50 – 200cm. Standard focus distances: 50, 75, 100 & 125cm. Standard irises: F1.4 & F8. |
Lenses for P501U | |
LS-8 (2/3”, 10MP) | 8mm lens for P501U. 2/3″ format lens, C-mount with screw locks for aperture and focus. Includes calibration at iris F1.8 and F22, or one custom setting only, at up to four focus distances between 15 – 200cm. Standard focus distances: 25, 50, 75 & 100cm. Standard irises: F1.8 & F22. |
LS-12 (2/3”, 10MP) | 12mm lens for P501U. 2/3″ format lens, C-mount with screw locks for aperture and focus. Includes calibration at iris F8 and F11, or one custom setting only, at up to four focus distances between 25 – 200cm. Standard focus distances: 25, 50, 75 & 100cm. Standard irises: F1.8. |
LS-16 (2/3”, 10MP) | 16mm lens for P501U. 2/3″ format lens, C-mount with screw locks for aperture and focus. Includes calibration at iris F8 only at up to four focus distances between 17 – 200cm. Standard focus distances: 25, 50, 75 & 100cm. Standard irises: F1.8. |
LS-25 (2/3”, 10MP) | 25mm lens for P501U. 2/3″ format lens, C-mount with screw locks for aperture and focus. Includes calibration at iris F8 and F16, or one custom setting only, at up to four focus distances between 17.2 – 200cm. Standard focus distances: 25, 50, 75 & 100cm. Standard irises: F1.8 & F16. |
LS-35 (2/3”, 10MP) | 35mm lens for P501U. 2/3″ format lens, C-mount with screw locks for aperture and focus. Includes calibration at iris F2 only at up to four focus distances between 25 – 200cm. Standard focus distances: 25, 50, 75 & 100cm. Standard irises: F2. |
LS-50 (2/3”, 10MP) | 50mm lens for P501U. 2/3″ format lens, C-mount with screw locks for aperture and focus. Includes calibration at iris F8 and F16, or one custom setting only, at up to four focus distances between 25 – 200cm. Standard focus distances: 25, 50, 75 & 100cm. Standard irises: F2.8 & F16. |
Lenses for P1230U |
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LS-16 (4/3”, HR) | 16mm lens for P1230U. 4/3″ format lens, C-mount with screw locks for aperture and focus. Includes calibration at iris F2 and F22, or one custom setting only, and at up to four focus distances between 25 – 200cm. Standard focus distances: 25, 50, 75 & 100cm. Standard irises: F2 & F22. |
LS-25 (4/3”, HR) | 25mm lens for P1230U. 4/3″ format lens, C-mount with screw locks for aperture and focus. Includes calibration at iris F2 and F16, or one custom setting only, and at up to four focus distances between 25 – 200cm. Standard focus distances: 25, 50, 75 & 100cm. Standard irises: F2& F22. |
LS-35 (1.1”, 24MP) | 35mm lens for P1230U. 35 mm focal length, 1.1″ format lens, C-mount with screw locks for aperture and focus. Includes calibration at iris F1.8 only, or one approved custom setting only, and at up to four focus distances between 30 – 200cm. Standard focus distances: 30, 50, 75 & 100cm. Standard iris: F1.8. |
LS-50 (1.1”, 24MP) | 50mm lens for P1230U. 1.1″ format lens, C-mount with screw locks for aperture and focus. Includes calibration at iris F1.8 and F16, or one custom setting only, at up to four focus distances between 28 – 200cm. Standard focus distances: 30, 50, 75 & 100cm. Standard irises: F1.8 & F16. |
Near Eye Display (NED) Lenses | |
LS-8L | 8mm focal length compact lens for near eye display (NED) applications. Calibrated with one fixed entrance pupil between 3 – 5mm, and at up to four focus distances up to 200cm. Image circle is smaller than sensor of P230U or P1230U. Standard focus distance: 200cm. Standard iris: 5mm. |
LS-10L | 10mm focal length compact lens for near eye display (NED) applications. Calibrated with one fixed entrance pupil between 3 – 5mm, and at up to four focus distances up to 200cm. Standard focus distance: 200cm. Standard iris: 5mm. |
Software | |
Photometrica Bolt-Ons | Optional application specific Photometrica software packages. |
An imaging photometer is a powerful camera-based instrument that provides for vastly increased productivity compared with ‘spot’ luminance meters. Imaging photometers and colorimeters find application with automotive and avionics displays and controls, vehicle lighting, near-to-eye displays, flat panel displays, lit area uniformity of lighting products and with projected beam pattern analysis of lamps and LEDs. The more common applications include testing of the following products:
Datasheets
Technical Notes
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