Poor Headlights. led

Faults and Technical chat for the Volvo XC40
Metroman
Posts: 83
Joined: Mon Mar 09, 2020 11:29 pm

Post by Metroman »

The Pixel LED's do not perform as well on dipped beam as the standard reflector LED headlights according to the technical measurement data quoted by the IIHS test. Marginally better on high beam . The perception of one individual against that of another is likely to differ greatly due to a number of factors and laboratory testing of these units will be conducted in optimum controlled conditions , measured by calibrated instrumentation which will provide result expressed as numerical value in the appropriate units of measurement.
The visual acuity of the human eye in not comparable to test instrumentation , nor does the light output from the source register as a number when it is processed by the brain. More tangible improvement in night vision is likely to be gained by having an eye test and making the necessary adjustments based on the result of that than altering properly adjusted headlights.

This article discusses the technology of vehicle lighting and the perception of "brighter" light sources vs reality. Worth a read
https://www.danielsternlighting.com/tec ... ights.html
XC40 D3 Inscription Pro Auto in Denim Blue with Convenience, Xenium and Intellisafe pro packs plus smartphone integration , tinted rear windows and spare wheel.

eugen61
Posts: 1221
Joined: Sun May 10, 2020 7:33 am

Post by eugen61 »

Metroman wrote: Wed Jan 03, 2024 11:04 am More tangible improvement in night vision is likely to be gained by having an eye test and making the necessary adjustments based on the result of that than altering properly adjusted headlights.
Couldn’t agree more. My car’s headlights performance improved significantly after having cataract surgery :lol:
Felindre
Posts: 785
Joined: Wed Dec 23, 2020 2:19 pm
Location: South Wales, UK

Post by Felindre »

I think most people can judge HOW FAR DOWN THE ROAD their light illuminate based on what they can see. This also assumes the lights WERE correctly set up with no possibility of a mistake during assembly.
B4 AWD Inscription , Fusion Red, Blond interior. Drivers Assist, Climate, Tinted rear windows and Towing pack.
Ordered 14 Dec 20, delivered 10 March 21
Deleted User 4737

Post by Deleted User 4737 »

Although smiled at Metroman's post they do make a valid point. Wonder how many drivers dismiss eye sight as a probable reason for poor vision when driving, especially at night. You can bet its a significant number?
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