One Shot, Full Color Map
HY imaging colorimeter with XYZ tristimulus filters precisely matched to CIE standards captures full-field luminance and chromaticity distribution in one shot. 20MP high resolution, 1,000,000:1+ dynamic range, ±3% brightness and ±0.003 color accuracy. Multiple lens options for display, automotive and lighting light & color inspection.
How Color Uniformity Testing with Imaging Colorimeters Improves Display Yield
Display panel manufacturers are constantly working to improve production yield, and color uniformity testing with imaging colorimeters is one of the most impactful tools available. Unlike spot measurements that sample only a handful of locations, imaging systems capture color data across every pixel of the display, revealing spatial color variations, edge tinting, corner shifts and Mura patterns that directly affect perceived quality. Advanced analysis software generates pseudocolor heatmaps that make non-uniformity immediately visible to process engineers, accelerating root-cause analysis during production optimization.
By catching color uniformity issues early in the manufacturing flow, manufacturers can adjust backlight assembly, cell bonding and other processes before defective units propagate through the line. This early detection reduces scrap rates, rework costs and downstream warranty returns. For high-value panels like OLED and Mini LED where color consistency is a premium selling point, imaging colorimeter-based uniformity testing directly translates to higher yield, better product grades and stronger margins — making it one of the highest-ROI investments in display manufacturing quality control.
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Lens Focal Length Selection
HY imaging colorimeters support multiple focal lengths including 16mm, 25mm and 50mm, covering applications from wide-area large surface inspection to long-distance small target measurement. The 16mm wide-angle lens suits one-shot testing of large displays and long light fixtures; the 50mm telephoto lens works for small luminous components at distance. Lenses are field-replaceable for flexible matching based on working distance, target size and FOV, with custom optical solutions available.
ND Filter Extension
Optional ND8 neutral density filters extend maximum luminance and chromaticity measurement from 50,000 cd/m² to 1,000,000 cd/m², supporting high-brightness scenarios like high-intensity LEDs, laser sources and HDR displays. Filters are precision-calibrated to maintain original system accuracy for both brightness and color after attenuation. Available as built-in or external installation to match different brightness ranges.
Measurement Parameters & Algorithm Customization
Custom light and color analysis algorithms and measurement parameters are available, including custom ROI regions, multi-point mapping, uniformity calculation methods, ΔE color difference formula selection, CCT and dominant wavelength calculation. Multiple color systems like CIE 1931 xy and CIE 1976 u’v’ are switchable, with customizable pass/fail thresholds and report formats per industry or enterprise standards.
Trigger & Communication Interface Customization
Standard GigE interface with GenICam protocol seamlessly integrates with mainstream machine vision software and automation systems. Custom hardware trigger interfaces and IO control signals can be developed per production line requirements for PLC, robot and test station synchronization. Multiple communication modes including TCP/IP and serial port support integration with MES, SPC and factory information systems.
Product Overview
HY Imaging Colorimeter combines a high-performance CMOS area array sensor with precision XYZ tristimulus filters whose spectral response strictly matches the CIE standard observer function, capturing full-field luminance, chromaticity, color temperature, uniformity and complete optical parameters in a single shot. Equipped with a 20MP high-resolution sensor delivering over 1,000,000:1 HDR dynamic range, covering measurements from 0.01 to 1,000,000 cd/m² with ND filter. Multiple focal length options including 16mm, 25mm and 50mm lenses, GigE interface and wide operating temperature from -30°C to 60°C. With ±3% luminance accuracy and ±0.003 chromaticity accuracy, it is widely used in display testing, automotive lighting, backlight inspection and LED quality evaluation — a high-precision optical measurement solution for integrated light and color testing.
Best Practices for Integrating Imaging Colorimeters into Automated Production Lines
Integrating imaging colorimeters into automated production lines delivers significant quality and efficiency gains, but successful deployment requires attention to several key factors. First, proper mechanical fixturing ensures the camera is positioned at the correct working distance and angle, with the target filling the field of view without edge cropping. Second, strict ambient light control is essential — even small amounts of stray light can skew low-brightness and color measurements, so dark enclosures or dedicated light shields are standard. Third, reliable hardware triggering synchronized with part positioning ensures consistent measurement timing across every unit. Fourth, measurement data should feed directly into your MES or SPC system for real-time traceability and statistical process control. Fifth, establish a regular recalibration schedule to maintain accuracy as filters and sensors age. Following these best practices helps manufacturers maximize their colorimeter investment, achieving dependable 100% inspection without disrupting production cycle time or line throughput.
Tristimulus XYZ Filters vs Bayer Pattern: Choosing the Right Colorimeter Technology
When selecting an imaging colorimeter, one of the most important decisions is the underlying color measurement technology: tristimulus XYZ filters or Bayer pattern CMOS. Tristimulus filter systems use dedicated X, Y and Z filters whose spectral response is precisely matched to the CIE 1931 color-matching functions, delivering highly accurate chromaticity measurements that closely align with human visual perception. Bayer pattern systems use standard RGB color filter arrays on CMOS sensors, converting RGB values to XYZ through mathematical calibration — faster and lower cost but with slightly reduced color accuracy, especially at certain wavelengths. For applications where color accuracy is critical — such as automotive lighting, medical displays and high-end consumer electronics — tristimulus filter colorimeters provide the gold standard. For high-volume production where speed and cost matter most, Bayer pattern systems offer excellent value. Understanding your accuracy requirements and throughput needs is the first step toward choosing the right technology for your application.
How Imaging Colorimeters Set the Standard for Modern Optical Quality Control
Imaging colorimeters have become essential equipment for optical quality control across every industry that produces light-emitting products. Unlike traditional spot colorimeters that measure only one location at a time, imaging systems capture millions of color and brightness data points in a single exposure, generating complete 2D luminance and chromaticity maps in seconds. This dramatic speed improvement means manufacturers can test every unit on the line instead of sampling batches, catching color defects that point measurements would simply miss. The best systems use XYZ tristimulus filters calibrated to match CIE standard observer functions, ensuring measurements directly correspond to what the human eye actually sees. For companies upgrading their optical inspection capability, imaging colorimeters offer unmatched speed, accuracy and cost efficiency compared to older measurement methods.
Product Features & Advantages
- Single-Shot Light & Color Measurement:Area imaging principle captures millions of luminance and chromaticity measurement points simultaneously in a single exposure, completing full-surface light and color distribution mapping at once. Tens of times faster than traditional point scanning, ideal for rapid production line full inspection with shorter cycle times.
- Tristimulus Filters for Accurate Color:Precision XYZ tristimulus filters with spectral response strictly matching the CIE 1931 standard observer function deliver higher chromaticity accuracy closer to human perception. ±0.003 color accuracy and ±0.0005 repeatability meet the strict color accuracy requirements of automotive, medical and high-end display industries.
- Ultra-Wide Dynamic Range:HDR performance exceeds 1,000,000:1, accurately measuring luminance and chromaticity across both extremely dark and bright regions in the same image. With optional ND filter, maximum measurement extends to 1,000,000 cd/m², easily handling wide-range brightness scenarios like HDR displays and high-brightness LEDs.
- High-Resolution Detail Capture:Equipped with a 20MP high-resolution CMOS sensor that identifies subtle brightness and color differences. It catches Mura, color shift and dark spots invisible to the naked eye, meeting detailed inspection requirements for high-end displays and precision optical components.
- Industrial Design for Durability:Solid-state construction delivers reliability and low failure rates with no moving parts. -30°C to 60°C wide temperature operation and GigE industrial interface adapt to production lines, labs and field environments. Stable long-term operation with low maintenance makes it the reliable choice for sustained industrial deployment.
Application Fields & Scenarios
In flat panel display manufacturing, HY imaging colorimeters are widely used for outgoing light and color quality inspection of LCD, OLED, Mini LED and Micro LED displays. A single shot captures full-screen brightness distribution, color uniformity, gamut coverage and color temperature consistency, detecting defects like dead pixels, dark spots, color shift and Mura. Dedicated software generates pseudocolor distribution maps for visualizing optical quality variations across the panel. The high-resolution sensor enables pixel-level precision measurement for both R&D characterization and production line full inspection — making it core optical equipment for display panel light and color quality control.
Automotive lighting demands strict color and brightness consistency. HY imaging colorimeters precisely measure luminance and chromaticity of dashboard backlights, cockpit ambient lights, door trim strips, grille lamps and taillights. Custom measurement regions follow product contours to evaluate uniformity and color consistency across luminous areas, verifying brightness linearity and color coordinate stability across dimming levels. Wide-temperature design adapts to thermal testing of automotive components, and integration with EOL systems enables fully automated optical final inspection — ensuring every automotive lighting component meets OEM light and color standards.
Brightness and color uniformity of backlight modules and illuminated keyboards directly impacts end-product visual quality. HY imaging colorimeters perform comprehensive light and color inspection of BLU modules, laptop keyboards and mechanical keyboard backlights. Zonal measurement captures per-key brightness and color deviation, detecting common defects like corner dimming, light leakage, lamp shadows and color shift, with uniformity heatmaps supporting process optimization. Single-shot full-surface testing far outpaces traditional spot measurement. Integrated into backlight assembly lines for in-line 100% inspection, it effectively catches defects before shipment and improves overall product consistency.
Light and color quality of LED luminaires directly affects lighting performance and user experience. HY imaging colorimeters evaluate optical performance for indoor/outdoor fixtures, landscape lighting and commercial lighting products. The system measures surface brightness distribution, color temperature consistency, color rendering related parameters and beam uniformity, assessing color tolerance and brightness consistency across production batches. Combined with goniophotometers, it enables comprehensive intensity distribution and photometry testing. Portable and flexible, it works for both lab R&D measurement and production line sampling or full inspection.
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Alternative Names
imaging colorimeter/tristimulus colorimeter/XYZ filter colorimeter/2D chromaticity measurement/color and luminance meter/CMOS imaging colorimeter/display color testing equipment/LED chromaticity uniformity tester/backlight BLU color inspection/automotive lighting color measurement/HDR imaging colorimeter/high resolution color camera/GigE vision colorimeter/CIE xy chromaticity meter/color difference delta E tester/display mura inspection system/color temperature CCT analyzer/production line color QC/industrial optical color meter/ND filter color extension/wide temperature colorimeter/pixel level color measurement/color uniformity evaluation system/panel quality control equipment/ambient light color tester/mini led color inspection/OLED chromaticity measurement/smart watch display color test/medical display color calibration/keyboard backlight color uniformity/taillight color testing system/dashboard backlight colorimeter/projection display color test/HUD color measurement/luminaire color distribution analyzer/consumer electronics display QC/imaging colorimeter manufacturer china/HY optical color device/portable imaging colorimeter/online color inspection/machine vision color measurement/factory calibrated colorimeter/chromaticity repeatability tester/optical quality control system/digital color camera/area array color meter/scientific grade color sensor/factory automation colorimetry/industrial color sensor/end of line color testing
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