::  Posts  ::  RSS  ::  ◂◂RSS  ::  Contact

Adaptive Windshield Tinting

June 1st, 2010
ideas, transport, tech  [html]

Driving at night can be annoying because the range of light intensities is huge. Driving along a dark road you want your eyes adapted to the dark, then along comes a car with bright headlights and you lose your night vision. The rearview mirror also has this issue: it tends to be full of bright headlights, but if you switch it to "night mode" then it is so dark you can't see anything but the headlights. I think something that could darken the brightest stuff while leaving less bright things alone would really help night driving.

One solution I think would be some kind of adaptive windshield tinting. A fast responding photosensitive darkening chemical, sensitive only in one direction, would allow the windshield to limit bright lights aimed at the driver's eyes without much affecting portions of the field of view that were not actually bright. The idea is that at every spot on the windshield there is a direction from which bright light would hit the driver's eyes, so each spot blocks light only when there's excessive light from that single direction. It would look pretty weird from the passenger's seat, but I think the driver is far enough from the windshield that even different driver heights and seat to wheel distances wouldn't make it too innacurate.

I suspect rapidly darkening and lighting in response to varying light levels is possible, but requiring the sensitivity to be only to a specific direction might be impossible or way too expensive.

Comment via: facebook

Recent posts on blogs I like:

How Fast New York Regional Rail Could Be Part 2

In my last post about New York regional rail schedules, I covered the New Haven and Harlem Lines of Metro-North and the Main Line and Hempstead Branch of the LIRR. I was hoping to cover more lines tonight, but due to time constraints only the Hudson Line …

via Pedestrian Observations October 17, 2019

Strong stances

I. The question of confidence Should one hold strong opinions? Some say yes. Some say that while it’s hard to tell, it tentatively seems pretty bad (probably). There are many pragmatically great upsides, and a couple of arguably unconscionable downsides. …

via Meteuphoric October 15, 2019

What do executives do, anyway?

An executive with 8,000 indirect reports and 2000 hours of work in a year can afford to spend, at most, 15 minutes per year per person in their reporting hierarchy... even if they work on nothing else. That job seems impossible. How can anyone make any im…

via apenwarr September 29, 2019

more     (via openring)

More Posts:


  ::  Posts  ::  RSS  ::  ◂◂RSS  ::  Contact