Reasons one to five: Simple fast and reproducible alignments
LMK Position – Robotic Luminance Camera System
Luminance camera with 6-axis robotics - for automated, precise display measurement technology and automotive applications
Alignment and measurement with 6-axis robot
LMK Position is a robotic measurement system that combines a high-resolution LMK luminance camera with a 6-axis industrial robot. It offers automated, precise and reproducible measurements for all types of displays and is particularly suitable for automotive applications.
The system simplifies and accelerates the entire measurement process:
- Automated alignment: time-saving, low-error, reproducible.
- Flexible measurement: In accordance with international specifications and standards (e.g. DFF, ICDM) and can be combined with various measuring devices.
Thanks to intelligent image processing and proven calibration technologies, LMK Position is the ideal solution for research, development and small series production.
Top ten reasons for LMK Position
- Fast vertical alignment: Automated DFF-BlackMURA alignment in just a few seconds
- Precise angular measurement: Fully automated and highly accurate goniometric measurements.
- Exact conoscopy: Automatic alignment of our conoscope on any free-form display using 3D scan including pixel structure avoidance.
- Full range of movement: 6-axis movement without restriction thanks to secure cable routing.
- Intelligent tripod: Multiple storable camera positions for consistent reproducibility.
- Easy handling: No need for complex, one-off fixings - ideal for prototypes.
- More detail thanks to image fusion: Higher resolution thanks to image stitching - depending on the lens.
- Intelligent functions: Automatic focus, defocus, sparkle-scan and virtual image distance measurement - even with manual or fixed focus lenses.
- Multisystem compatibility: All alignment functions can also be used with spectroradiometer specbos 1211 & specbos 2501.
- Modular and flexible: Luminance camera, spectroradiometer and robots can also be used individually - with temporary system dismantling.
Reasons six to ten: Cost efficient and future proof metrology improvements
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Integration & Security
TechnoTeam offers complete integration on site in the EU, South Korea and China. All relevant security standards are met. Documents on the installation and scientific publications are available here.
Example of a common integration of an LMK Position System
| Technical data | |
|---|---|
| Maximum arm reach | 875 mm |
| Number of axis | 6 |
| Position detection and motors | Absolute encoder; AC servomotors and brakes for all joints |
| Motion range | J1: +/-170°; J2: +135° -100°; J3: +153° -136°; J4: +/-270°; J5: +/- 120°; J6: +/-360° |
| Position repretability (at the center of the camera mounting) | +/-0.03 mm |
| Weight with Alu profile rack (incl. robot, LMK, controller, cables) | <150 kg |
| Alu profile rack dimensions (L × W × H) | 780 × 780 × 950 mm (Robot installation height: 970 mm) |
| Compatible cameras | LMK5, LMK6-5, LMK6-12, LMK6-30 |
| Installation environment of robot | Temperature: 0 to 40°C; Humidity: 20 to 90% RH; Vibration:4.9 m/s² (0.5 G) |
| Optional equipment | 7th axis (linear) mounted below the robot (below J1) Specbos 1211-LAN VIS-NIR spectroradiometer, Industrial operation PC (19'' rack) |
Relevant products and applications
Publications
Advanced Alignment and Metrology Concepts Using Photometric Robotics with Examples for Automotive Displays
International Conference on Display Technology (ICDT 2021)
The alignment quality and reproducibility in ILMD (Imaging Luminance Measurement Device) based display metrology has a great influence on the reproducibility of the obtained measurement data. In this context, this contribution outlines and introduces several advanced measurement and alignment concepts that can be performed with “photometric robotics”. The term describes machine vision performed with an ILMD supported by robotic movements.
Precise Virtual Image Distance Measurements Using Imaging Luminance Measurement Devices with Type II Calibration
SID Vehicle Displays & Interfaces 2022
As head-up displays play an increasingly important role in modern vehicle cockpits, there is a growing demand for measurement procedures to characterize them. There are two general approaches to measuring virtual image distance, a parallax-based triangulation method and a focus-based technique. They can be performed using Imaging Luminance Measurement Devices with type II calibration, making them suitable for photometrical and geometrical measurements. This paper examines the advantages and drawbacks of both methods using mathematical models and measurement data.
Distinguished Paper: Short Distance Uniformity and BlackMURA Measurements
Journal of the Society for Information Display
The increasing display sizes and changing form factors of displays, including automotive displays, lead to impractical measurement distances for lateral uniformity measurements. This contribution suggests and exemplarily applies two alternative and combinable methods to allow lateral uniformity measurements at low distances and describes an adjusted BlackMURA compliant validation procedure. The proposed methods are validated with a high-quality display device and are compared to results using the standard long-distance measurement procedure.
Photometric Robotics for Fast and Precise Human-Centered Automotive Display Metrology
SID Vehicle Displays & Interfaces 2021
The increasing complexity of automotive displays in terms of design, shape, and degree of integration leads to an increasing complexity of setup and alignment procedures. In this context, the effort required to ensure reproducible measurement results, e.g. for prototypes or in research and development is also increasing rapidly. We introduce the concept of photometric robotics which combines machine vision, photometry, and robotic to solve these challenges.
- Type:
- Package
- Applications:
- Automotive Display
- Measurands:
- Color measurement Light measurement
- Tasks:
- Automation & Industry Development & Industry Science & Research