ProMetric® Y Imaging Photometers

ProMetric® Y Imaging Photometer - Awards
ProMetric® Y Imaging Photometer - Right Side
ProMetric® Y Imaging Photometer - Left Side
ProMetric® Y Imaging Photometer - Top
ProMetric® Y Imaging Photometer - Lens
ProMetric® Y Imaging Photometer - Connectivity
ProMetric® Y Imaging Photometers
ProMetric® Y Imaging Photometer - Right Side
ProMetric® Y Imaging Photometer - Left Side
ProMetric® Y Imaging Photometer - Top
ProMetric® Y Imaging Photometer - Lens
ProMetric® Y Imaging Photometer - Connectivity
ProMetric® Y Imaging Photometers

Fast, small-format Photometers optimized for display test and cosmetic inspection in production environments.

ProMetric® Y is a series of high-performance imaging photometers designed for high-volume production testing of displays, smartphones, tablets, notebooks, keyboards, and lighting products.

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ProMetric Y Family

The ProMetric® Y delivers reliable test results and analysis to improve quality and control costs:

  • Faster measurements deliver shorter cycle times
  • Objective quantification is superior to subjective human inspection
  • Faster, more accurate test analysis improves yield

Each ProMetric Y Imaging Photometer employs a scientific-grade image sensor that is thermoelectrically cooled to provide accurate, repeatable measurements. ProMetric cameras optimize resolution and dynamic range to ensure imaging performance. ProMetric Y supports high-speed USB and Ethernet communications.

Available resolutions:

  • 2-megapixel (1600 x 1200)
  • 16-megapixel (4896 x 3264)
  • 29-megapixel (6576 x 4384) 
  • 43-megapixel (8040 x 5360)

Delivering Smart Technology™ Innovations

  • Smart Control™ for fast, precise setup: Smart Control allows you to electronically adjust both focus and aperture settings of your lens.
  • Smart Calibration™ for automatic high-accuracy results: ProMetric cameras offer a variety of electronically controlled lenses, each calibrated over a wide range of working distances and aperture settings. ProMetric systems monitor focal distance and aperture settings and automatically applies the correct flat field calibration, greatly simplifying setup and ensuring accurate measurement results.


For highly accurate color and light measurements that match values perceived by the human eye, Radiant cameras and lenses are calibrated to obtain absolute data in any environment. Factory calibration procedures are performed on each Radiant camera to enable traceability to national standards such as NRL, ETL, PTB, and NIST. (Is traceability of your measurement system a critical part of your application? Contact Radiant for additional options and support.)

Each Radiant camera and lens pair can also be calibrated for unique applications, in the factory or in the field, ensuring consistency regardless of variation in:

  • Focal Distance: Flat-field calibration; Image scaling
  • Device Spectral Power Distribution (SPD): Luminance calibration; Color calibrations, such as one-color calibration, four-color calibration (depending on RGB or single-color emitters); LED and white phosphor LED calibration
  • Lensing effects: Distortion calibration (if applicable)
Distortion calibration before and after

Before (left) and after calibration to remove distortion.

Key Features and Highlights

  • High Speed: Minimum measurement time (photopic) to 0.3 seconds
  • Hig-resolution sensor options
  • Available in photometric and radiometric models
  • Multiple lens options: 20 mm, 35 mm, 50 mm, 100 mm macro, and 200 mm
  • ProMetric control and analysis software is standard. TrueTest™ Automated Visual Inspection Software and other software modules optional.

ProMetric software includes API support, and provides complete measurement control and Point-of-Interest/Region-of-Interest functionality. In addition, the ProMetric Y imaging photometers are backed by the industry's best product warranty, including direct access to the Radiant Vision Systems technical support team to maximize the utility of your application. For automated testing, ProMetric Y is optimized to work with the industry-leading TrueTest Software—and specialized software modules—for high-volume manufacturing of displays, smartphones, notebooks and more.

Awards and Recognition

    The Radiant ProMetric Y Imaging Photometer has been honored with an award for innovation:

    Parameter ProMetric Y2 ProMetric Y16 ProMetric Y29 ProMetric Y43
    Primary Application

    Production line testing, Lighting

    Production Line Testing, Display Testing, 
    OLED Testing, and Advanced Vision applications: Cosmetic Surface Inspection, Assembly Verification
    Sensor Pixel Resolution 1600 x 1200 4869 x 3264 6576 x 4384 8040 x 5360
    Sensor Megapixels 1.9 16.0 28.8 43.1
    Sensor Type CCD, Interline, Cooled to +5°C
    System Dynamic Range
    (single exposure, per pixel)
    61 dB (1 x 1 binning) 59 dB (1 x 1 binning)
    High Dynamic Range
    Luminance (Minimum)*

    0.00001 cd/m2 Limit of Detection
    0.0001 cd/m2 @ SNR = 60
    0.0005 cd/m2 @ SNR = 100

    Luminance (Maximum)

    1010 cd/m2 with optional ND filters****

    System Accuracy** Illuminance ± 3%; Luminance (Y) ± 3%
    Short-term Repeatability* Illuminance ± 0.02%; Luminance (Y) ± 0.02%
    Lens Type / Focal Distances
    Electronically controlled focus and aperture;
    24, 35, 50, 100, 200 mm
    Electronically controlled
    focus and aperture;
    35, 50, 100, 200 mm
    Field of View
    (Full Angle, H x V degrees)
    24 mm 20° x 15°
    35 mm 14° x 10°
    50 mm 10° x 8°
    100 mm 5° x 4°
    200 mm 3° x 2°
    35 mm 41° x 28°
    50 mm 30° x 20°
    100 mm 15° x 10°
    200 mm 8°x 5°
    35 mm 55° x 37°
    50 mm 40° x 28°
    100 mm macro 20° x 14°
    200 mm 11° x 7°
    Minimum Measurement Time*** 0.2 sec 0.6 sec 1.0 sec 1.4 sec
    Spatial Measurement Capabilities Luminance, Radiance, Illuminance, Irradiance, Luminous Intensity, Radiant Intensity

    foot-lambert, cd/m2, nit, W/sr/m2, foot-candles, lux, lux-s, W/m2, W-s/m2, candela, W/sr

    Communication Interface Ethernet 100/1000, USB 2.0
    Power External AC / DC adapter, 100-240 V, 50-60 Hz, 60 Watts
    LCD Touch Panel None
    Dimensions (H x W x D) 86 mm x 86 mm x 154 mm
    Weight 1.4 kg
    Operating Temperature 0 - 30° C
    Operating Humidity 20 - 70% non-condensing

    Based on a virtual detector size of 1% of FOV.

    ** Based on illuminant A or user calibration for specific spectra. Based on a virtual detector size of 1% of the FOV. 

    *** For 100 cd/m2, using gigabit Ethernet.

    **** With 35 mm USM lens, use AA2000 67-72 mm adaptor and 72 mm filter.
            With 50 mm USM lens, use AA2000 67-72 mm adaptor with 72 mm filter.
            With 100 mm Macro lens, use AA1040 58-52 mm adaptor and 72 mm filter.
            With 200 mm lens, use 72 mm filter.


    Specifications subject to change without notice.



    Display Testing

    Used for precise measurement of qualities of light across a display, the ProMetric Y Imaging Photometer objectively quantifies spatial luminance, contrast, and uniformity values in addition to defects like mura, light leakage, dead pixels, lines, and particles.

    ProMetric Y OLED microled measurement


    With extremely high-resolution sensor options, the ProMetric Y is ideal for capturing measurements at the pixel and subpixel for light output characterization. In emissive displays like microLED, mini LED, and OLED, independently emitting pixels can vary from one to the next, causing non-uniformity in brightness or color that can worsen at different display bright states. Within a single measurement, the ProMetric Y measures an entire display in exact detail across thousands of emissive pixels, acquiring values for each pixel in the display.

    Backlit Symbols

    The ProMetric Y paired with TrueTest™ Software automatically applies analysis regions to unique symbols (whether alphanumeric or other shapes). Thresholds can be applied for target luminance values that allow discrete measurement of symbol sets. Evaluate symbol brightness, inter- and intra-character uniformity, and light leakage or reflections from symbols on adjacent surfaces.

    ProMetric Y symbol measurement keyboards


    Cosmetic Surface Defects

    Applying photometric evaluation of subtle fluctuations of light, the ProMetric Y can be utilized for automated visual inspection of surfaces where reflections and contrast variations indicate defects. Using high resolution and dynamic range, the ProMetric Y can classify extremely subtle scratches, dents, missing or distorted elements, debris & particles, smudges, and overall surface uniformity, applying tolerances for acceptable defect type and severity.

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