WELCOME LIGHTS
Welcome Lights: Innovative Lighting Solutions for Comfort and Safety in Automotive Design
With the development of highly efficient LEDs and microlens arrays, compact, energy-efficient systems are now available on the market that require minimal installation space. This has enabled new lighting solutions for comfort and safety in the automotive industry.
Example Function: Vehicle Entry Lighting
One example of a Welcome Lights system is vehicle entry lighting. This convenient lighting system helps passengers safely get in and out of the vehicle by illuminating the road on both sides of the vehicle.
- Added Safety: Passengers can be alerted to potential hazards by changing the shape and/or color of the light pattern.
Geometric Testing
The technical solutions for projecting light patterns are highly demanding, as high-resolution, high-contrast patterns must be projected from a short distance over a large area.
- Projection Testing: It must be tested whether the light pattern meets minimum and maximum size requirements based on mounting position.
- Size Measurement: The coordinate system of the projection surface must be known (e.g. in cm) so that the size of the light pattern can be accurately measured.
Luminance Uniformity Measurements
Photometric testing involves verifying that minimum or maximum luminance or illuminance values are met.
- Defining Measurement Areas: Different measurement regions are defined relative to the coordinate system.
- Uniformity Requirements: If necessary, requirements for the homogeneity of individual sub-areas of the light pattern can also be tested. It’s possible to analyze the presence of ghost images as well.
Color Measurements
Analyzing a color image of the projection patterns allows for the examination of multi-colored light patterns.
- Checking Color Gradients: Color gradients at the edges of the light pattern can distort the intended design and cause discomfort to passengers.
In summary, Welcome Lights offer advanced solutions for enhancing the vehicle entry experience, combining energy efficiency, safety, and comfort.