OPTIS Auto OEM Forum

9th March 2016, OPTIS Northern Europe, Sci-Tech, Daresbury

This event was aimed at Automotive leaders in Perceived Quality, Optical CAE, Virtual Experience and Virtual Assembly.

Simulation vs. Measurement

Presentation

This presentation sets out the preliminary findings of a study which compares simulations and photometric measurements of a vehicular display under high ambient daylight conditions. The aims of this study are to determine the gaps between simulated display screen reflections and those apparent in the real world, and to propose a calibration to the modelled inputs to align the simulated results more closely with those observed in the real-world for a particular use case.

Seminar: Lighting & Transportation

30th April 2015, Department for Business, Innovation & Skills, London

This seminar was hosted in association with the Institution of Lighting Professionals (ILP), the Department for Business, Innovation and Skills (BIS), Pro-Lite Technology and Konica Minolta Sensing. It was open to anyone with an interest in this key area, those involved with specifying or maintaining lighting in the transportation sector, street lighting contractors, those involved with vehicle lighting and displays, and energy and environmental managers. A key benefit was for members of the Institute of Lighting Professionals (ILP), as the event contributed towards their continuing professional development (CPD) hours.

Vehicle Interiors and Ambient Illumination

Presentation 

When thinking about automotive lighting, the technologies that immediately spring to mind may be exterior lighting such as headlamps, indicators, fog lamps, break lights and reverse lights. However, the role of lighting in vehicle interiors is becoming more central to brand, perceived quality and safety. Interior vehicle lighting is not considered to be task lighting but more about an aesthetic, with ambient lighting schemes that can be selected based on the preference of the driver, entry and exit lighting such as puddle lamps and illuminated steps, and the consistency of colour of illuminated switches that all tie in to the design and brand. Some lit features however provide feedback to the driver, where this is the case, the lighting becomes an important consideration for driver distraction.

This presentation highlights the increasing lighting and display technology in modern vehicles and the requirement to perform evaluations for performance, consistency, layout of information and to ensure safety critical information is displayed in an appropriate and timely manner.

electronic displays Conference 2015

25th-26th February 2015, Nuremberg, Germany

The electronic displays Conference 2015 facilitates the exchange of latest progress and information between engineers, industry professionals, users, researchers, distributors, consultants and manufacturers acting in the area of advanced electronic displays and their applications.

Measurement Variation in Automotive Display Assessments
Presentation

Variations in ambient lighting conditions can change the way vehicle interiors are perceived. Materials of apparently the same colour may become noticeably different if viewed under different lighting and display screens can become unreadable due to washout or mirror-like reflections.
With an increasing number of vehicle systems being controlled through a centralised display, the readability of automotive displays under ambient lighting conditions has become an important consideration for designers. During the design stage of production, optical ray tracing and physics based rendering software can be used to model the effects of daylight conditions on the internal environment of the vehicle. This enables designers to visualise the performance of displays with different optical properties under different ambient lighting conditions to optimise the position and orientation of the display. These simulations identify potential problem areas as early in the production process as possible. However, as with all designs, the display performance of the final design requires verification.
Verification of the design involves measuring the reflections on the surface of the display under a number of high ambient scenarios and evaluating the performance based on established criteria developed by the aerospace industry. Assessments under real skies would not provide adequate control and repeatability due to the changeable nature of the sky, therefore the solution is to test under controlled artificial lighting comparable to natural daylight.
International standards, outline the required performance and the testing methods for performing assessments under high ambient lighting conditions. However, even following these methods there are a number of areas where repeatability and reproducibility of measurements can be negatively affected. These are mainly associated with the set-up geometry of the photometer and the simulated lighting environment.

This presentation identifies the challenges to performing in-situ automotive display assessments and suggests ways to address these issues to improve the overall control and repeatability of measurements.

SID 20th Annual Symposium on Vehicle Displays

10th October 2013, University of Michigan, Dearborn MI

The Detroit Chapter of the Society for Information Display sponsors this technical symposium to bring together scientists and engineers from the display technology, photonics, and vehicle systems communities.

Recreating Daylight for Readability Assessments of In-Vehicle Displays
Paper  Presentation

This paper describes the early stages of research into defining daylight scenarios encountered by vehicles and outlining which are the worst-case situations with respect to display readability. The main objective of the research is to design a facility capable of recreating a wide range of daylight scenarios to perform controlled, repeatable and reproducible readability assessments within automotive vehicles. This will be achieved through sky luminance mapping, display readability assessments under real skies and investigations into daylighting technologies.

This is an engineering doctoral research project with WMG, University of Warwick and sponsored by Jaguar Land Rover.