IMPROVING AUTOMOTIVE INSPECTION WITH LIGHT ......2017/02/21 · absolute data through NIST...
Transcript of IMPROVING AUTOMOTIVE INSPECTION WITH LIGHT ......2017/02/21 · absolute data through NIST...
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1S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
IMPROVING AUTOMOTIVE INSPECTION WITH LIGHT & COLOR MEASUREMENT SYSTEMS
Matt Scholz, Radiant Vision Systems | February 21, [email protected]
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2S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
TODAY’S SPEAKER
Matt ScholzBusiness Leader, Automotive
Matt Scholz is the Automotive Business Leader for global automotive projects at Radiant Vision Systems. Having spent close to 10 years working on automotive metrology applications, Matt has a strong and fundamental understanding of the growing challenges faced by this industry for increased control in lighting and illuminated components, cross-component harmonization, display quality, and manufacturing integrity. Matt has worked with all levels of the automotive supply chain, from Tier 1,2, and 3 vendors to major brands and OEMs worldwide. As the company’s dedicated liaison for the industry, Matt strives to build on Radiant’s success by sharing his expertise on measurement equipment and providing a consultative approach to system integration for varying automotive applications.
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3S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
AGENDA
• Who Is Radiant Vision Systems?• Light & Color Measurement
• What are Imaging Photometers and Colorimeters?
• How are they different from standard machine vision cameras?
• Applications for Automotive Testing• How to Select an Imaging System• Conclusion
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4S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
• Designs, manufactures, and sells scientific-grade CCD imagers that automate visual defect detection in displays and lighting applications
• Imaging systems uniquely capable of in-line quality control for light and color analysis
• Global leader in automated display testing
• Expertise in high-end consumer electronics, which is extended to automotive components
• Headquartered in Redmond, WA, USA, with offices in Shanghai, Shenzhen, and Seoul
• Acquired by Konica Minolta in August 2015
ABOUT RADIANT VISION SYSTEMS
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5S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
LIGHT & COLOR MEASUREMENT
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6S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
AUTOMATING HUMAN VISUAL PERCEPTION
Radiant imaging systemsreplicate and quantify human perception
of and color
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7S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
WHAT ARE IMAGING PHOTOMETERS AND COLORIMETERS?• CCD-based camera systems calibrated with
unique optical filter system to replicate the human eye’s response to light
• Designed to make precise spatial measurements of luminance (brightness) and chromaticity (color)
• Extremely high resolution and high dynamic range to detect subtle variances in light and contrast
• Turnkey systems used from R&D to production to measure light and inspect features
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8S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
Machine Vision
Human Inspection
QUANTIFYING HUMAN INSPECTION
Pros:• Visual acuity• Detect & classify
unpredictable defectsCons:• Inconsistent• Results not quantified• Easily fatigued
Pros:• Qualitative results• Consistent, repeatableCons:• Limited visual acuity• Defects must be pre-
programmed• Incapable of providing
absolute photometric data
Photometer/Colorimeter
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9S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
ADVANTAGES OVER STANDARD MACHINE VISION
• Inspect for 2D pixel contrast and color thresholds
• Use static tolerances defined in software for defect determinations
• Provide relative data to each inspection
• Speed favored over resolution (limited detail inspection)
• Poor uniformity analysis (can’t detect unknown defects in unknown locations)
• Measure luminance & chromaticity values
• Optical filters simulate human perception of light & color for detail-level quality determinations
• Provide absolute data through NIST calibration
• Extremely high resolution and dynamic range for sub-pixel defect measurement
• Detect and classify unpredictable defects like display mura, scratches, dents or other anomalies
Machine Vision Camera Photometer/Colorimeter
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10S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
Head-Up DisplaysInstrument PanelsIn-Vehicle Displays
Materials & FinishesInterior Lighting Exterior Lighting
APPLICATIONS FOR AUTOMOTIVE TESTING
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11S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
IN-VEHICLE DISPLAYS
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12S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
IN-VEHICLE DISPLAYS
Key Measurement Applications
• Luminance & Chromaticity• Contrast Measurement• Pixel Defects• Mura Detection• Viewing Angle Performance
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13S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
Non-Uniformity (Color &
Brightness)
Pixel & Line Defects
Mura Image Sticking Viewing AngleLight Leakage
Color OffsetBrightness Offset
Lv
COMMON DISPLAY TESTS
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14S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
• Isolate different types of Mura
• Score the different Mura
• Pass/Fail based on defined Mura type or severity tolerances
4 8
8 7
DISPLAY MURA TESTING
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15S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
INSTRUMENT PANEL HARMONIZATION
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16S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
INSTRUMENT PANEL HARMONIZATION
Key Measurement Applications:
• Indicator, Tell-Tale, and Control Component Uniformity
• Luminance & Chromaticity• Dominant Wavelength
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17S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
MEASURING TELL-TALES AND INDICATORS• Image of dash with indicators and tell-tales (set
the scene) – possible add a failed value
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18S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
PRODUCT SPOTLIGHT: AUTOMATIC POINTS OF INTEREST
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19S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
DRAWING POI COMPARISON
Traditional Method: Static POI Radiant Method: Auto-POI
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20S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
MOVING POI COMPARISON
Traditional Method: Static POI Radiant Method: Auto-POI
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21S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
CHANGING POI COMPARISON
Traditional Method: Static POI Radiant Method: Auto-POI
All redsymbols.
All redsymbols.
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22S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
All yellowsymbols.
All yellowsymbols.
CHANGING POI COMPARISON
Traditional Method: Static POI Radiant Method: Auto-POI
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23S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
All symbols at once.
All symbols at once.
CHANGING POI COMPARISON
Traditional Method: Static POI Radiant Method: Auto-POI
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24S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
PASS/FAIL CRITERIA: COLOR REGION
• Define color region pass/fail criteria beyond simple minimums and maximum of CIE x,y or CIE u’v’.
• Users can define regions for any color across a wide variety of instrument clusters and manufacturers.
• Region Types:• Rectangle• Ellipse• Polygon
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25S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
HEAD-UP DISPLAYS (HUDS)
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26S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
HEAD-UP DISPLAYS (HUDS)
Key Measurement Applications:
• Luminance & Chromaticity• Image Location on Infinite Plane
• Distance, size, scale of image
• Testing in Nighttime, Normal, Daytime Settings
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27S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
INSPECT ON AN INFINITE PLANE
• Locate images despite undefined focal distance
• Electronically-controlled lens
• Evaluate light and color of the projected image and display
• Ensure uniformity and safety requirements are met in any daylight conditions
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28S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
INTERIOR LIGHTINGAMBIENT LIGHTING, MAP LIGHTING
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29S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
INTERIOR LIGHTING
Key Measurement Applications:
• Luminance Intensity Distribution Pattern
• As a function of distance or angle
• Luminance & Chromaticity• Uniformity & Harmonization
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30S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
THE IMPORTANCE OF LIGHT & COLOR HARMONIZATION• More than a means to an end; cars have
become an experience
• Brand perception, safety, and even psychology are impacted by perceptions of light
• Inspections must be reproducible for all lights, and offer absolute data
• Map lighting, floor lighting, door panel lighting, graphical lighting applications
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31S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
EXTERIOR LIGHTINGHEADLAMPS, TAIL LIGHTS, TURN SIGNALS
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32S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
EXTERIOR LIGHTING
Key Measurement Applications:
• Light Source Characterization• Luminous Intensity Distribution
• Patterns and Limits
• Illumination Distribution
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33S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
PRODUCT SPOTLIGHT: PM-HL SOFTWARE
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34S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
MATERIALS & FINISHES
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35S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
MATERIALS & FINISHES
Key Measurement Applications:
• Surface Attribute Measurement• Color, finish, reflection
• Surface Defect Detection
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36S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
INSPECTION OF MATERIALS & FINISHES
• Photometers and colorimeters:The highest resolution/ dynamic range to detect the most subtle/low contrast defects
• Characterize surface finish:
• Matte, glossy
• Translucent, opaque
• Color
• Detect surface scratches, dents, and other inconsistencies
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37S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
HOW TO SELECT AN IMAGING SYSTEM
• Color• Camera Resolution• Lens
• Software Capability• Integration/Fixture
Configurations
+
What Are Your Requirements?
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38S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
SUMMARY
• Imaging photometers and colorimeters have significant advantages over standard machine vision cameras for light & color measurement and fine-detail inspection
• With quantifiable inspection data based on human visual perception, process improvements can be driven to ensure quality that accurately reflects customer experience
• Imaging photometers and colorimeters meet a range of automotive test applications; one system can accomplish multiple applications
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39S E E T H E D I F F E R E N C E© 2017 Radiant Vision Systems, LLC. All Rights Reserved.Improving Automotive Inspection with Light and Color Measurement Systems
THANK YOU!Learn more at www.RadiantVisionSystems.com
Questions? Contact Matt Scholz at:[email protected]