ZEISS DriveSafe Lenses - one pair of glasses for everyday use and safer driving
One pair of glasses for everyday use and safer driving.
Many people feel insecure, uncomfortable and stressed when driving, especially in difficult light and weather conditions such as rain and mist, or at dusk or night. On average 83% of spectacle lens wearers* also drive. Driving can be a real challenge for everybody no matter how long the distance, and good vision is vital for safety.
With ZEISS DriveSafe Lenses, ZEISS is introducing a new lens product category for everyday use. It is specifically designed to meet the vision needs of people who want to feel safer and more comfortable when driving with their everyday lenses.
ZEISS DriveSafe Lenses are available in both single vision and progressive lens types.
* Source: Market research study with 36 ECPs and 480 consumers in the US and Germany/August 2013
1// Better vision in low light conditions.
Luminance Design® Technology by ZEISS.
The pupil reacts to light intensity from its surroundings, specifically the light that directly strikes the eye. In daylight conditions, the pupil diameter is small, whereas it is large at night. In low light, so-called mesopic conditions, i.e. twilight, rainfall, dark days or night driving, the pupil diameter is in-between small and large. Space perception, as well as distance assessment, becomes more difficult for the driver.
After intensive research in the field of mesopic vision*, the rationale for the development of ZEISS Luminance Design™ Technology was identified and verified during wearer trials.
In a nutshell: there is bright light (photopic vision), no light (scotopic vision) and in-between low light (mesopic vision). In mesopic conditions, the light intensity, and thus the pupil size changes: a challenge for visual performance.
*For more information please refer to the ZEISS DriveSafe White Paper
LDT incorporates the pupil size for driving in mesopic conditions and optimises the lens design accordingly: the adapted pupil sizes used in the optimisation algorithms are 5.0 mm in single vision lenses and 4.3 mm in progressive lenses.
As a result, wearers have better vision in low-light conditions.
Bright light = photopic vision with small pupil
Large depth of focus, relaxed space perception
No light (darkness) = scotopic vision with large pupil
Small depth of focus
Low light = mesopic vision with varying pupil size
Challenging conditions due to variation in depth of focus
2// Reduced glare at night.DuraVision ® DriveSafe Coating by ZEISS. The challenge Glare describes the difficulty of seeing in bright light, such as direct sunlight or artificial light. Especially when driving at night, the high luminance from car headlights with Xenon or LED technology is distracting. Glare can be a risk, as it reduces the visibility of objects and sensitivity of the eye to contrast.
ZEISS vision science researchers carried out glare experiments. These formed the basis of internal studies* using different coating simulations. The blue light spectrum of car headlights (in particular in the 400–450 nm range) using Xenon H.I.D. (High Intensity Discharge) or LED technology produces a glare effect perceived by drivers.
*For more information please refer to the ZEISS DriveSafe White Paper.
DuraVision® DriveSafe Coating by ZEISS partially re?ects these wavelengths, which reduces perceived glare up to 64%** compared to premium AR coatings.
**Compared to premium ZEISS coatings. With DuraVision DriveSafe 64% less test drivers reported issues with glare with the new coating than with other premium AR coatings.
Without DuraVision® DriveSafe Coating
With DuraVision® DriveSafe Coating: up to 64%*** glare reduction
Reduced light-induced irritation such as dazzle and reflection
3// Accurate vision of road, dashboard and mirrors.
ZEISS DriveSafe Lens Design.
Driving demands a high level of concentration from drivers. Most of the time they need a broad view of the road in order to evaluate traffic conditions. The situation becomes challenging, especially for progressive lens wearers, when they need to switch their focus between the road, dashboard and mirrors. That is when dynamic vision becomes essential.
In an eye tracking study with FKFS* we identified the vision field needs of drivers:
97% of the recorded time they watch the road.
2% of the recorded time they use to look at the dashboard.
1% of the recorded time they switch focus between mirrors.
*FKFS Research Institute of Automotive Engineering and Vehicle Engines Stuttgart is an independent foundation associated with the University of Stuttgart. Founded in 1930, FKFS has become one of the largest and leading research institutes in the field of automotive engineering, serving major automobile manufacturers and suppliers. For more information please refer to the ZEISS DriveSafe White Paper.
To make it easier for progressive lens wearers to quickly refocus between the road, dashboard and mirrors, ZEISS developed the new DriveSafe Progressive Lenses with optimised distance and intermediate viewing zones, reducing the need for horizontal head movement.
Dynamic vision for fast refocusing from the road to the dashboard and mirrors
Near viewing zone ideally suited to daily activities
Up to 43% larger** mid-distance zone for easier focus switching between the dashboard and mirrors. And up to 14% larger** far-distance vision zone for a wider view of the road.
**Compared to ZEISS premium progressive lense
ZEISS DriveSafe Progressive and Single Vision Lenses for clearer traffic evaluation; ideally suited to everyday situations.
ZEISS DriveSafe Progressive and Single Vision Lenses for clearer traffic evaluation