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niyad

(113,232 posts)
Tue Sep 21, 2021, 08:31 PM Sep 2021

Just an idle thought: what would it take to make car windshields like transition

lenses? I thought about this the other day hen talking to a friend who was apparently removing tint film from her car. She said the tint was too dark at night, making it hard to see.

I would love something like that, but I suspect it would not be dark enough in daylight for me.

27 replies = new reply since forum marked as read
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Just an idle thought: what would it take to make car windshields like transition (Original Post) niyad Sep 2021 OP
It could certainly be done, but would be a lot more costly--especially in areas with hail or hlthe2b Sep 2021 #1
There is that. We get some really nasty hailstorms. And lots of construction. niyad Sep 2021 #10
Sounds great to me! SheltieLover Sep 2021 #2
Why not prescription lens dweller Sep 2021 #3
I thought about that, too. niyad Sep 2021 #6
And no one could drive the car dweller Sep 2021 #13
I think you have conflated the terms... ret5hd Sep 2021 #23
Okay dweller Sep 2021 #24
I think it would drive you batty because the sun comes at all different angles on your cars windows Hugh_Lebowski Sep 2021 #4
All true. I was thinking primarily of the windshield. niyad Sep 2021 #11
Think about what it costs for those two inch transition lenses and guess what... TreasonousBastard Sep 2021 #5
That's due to patents, I think. elleng Sep 2021 #12
Most of the patents go back to the thirties, but newer stuff could... TreasonousBastard Sep 2021 #20
Those two inch transitional lenses drmeow Sep 2021 #17
Thank you for this eye-opening information. niyad Sep 2021 #19
This is true, but it's easy to find that 70% not controlled by them. TreasonousBastard Sep 2021 #21
And the transition lenses drmeow Sep 2021 #25
They are. TreasonousBastard Sep 2021 #26
Unfortunately drmeow Sep 2021 #27
CoolVu Automotive Window Tinting Goonch Sep 2021 #7
Wow!!!! Thank you for this valuable information. Putting this in my contacts. niyad Sep 2021 #15
I would be careful here. Photochromatic lenses and films are... TreasonousBastard Sep 2021 #22
What a great idea malaise Sep 2021 #8
This message was self-deleted by its author malaise Sep 2021 #9
There are LCD based demo systems localroger Sep 2021 #14
Thank you. Will check them out. niyad Sep 2021 #16
Not everyone needs the same level of tint. Changing light levels would be difficult Srkdqltr Sep 2021 #18

hlthe2b

(102,200 posts)
1. It could certainly be done, but would be a lot more costly--especially in areas with hail or
Tue Sep 21, 2021, 08:34 PM
Sep 2021

construction "fly-up" leading to a lot of windshield replacements.

But it sounds like a good idea to me.

dweller

(23,625 posts)
3. Why not prescription lens
Tue Sep 21, 2021, 08:38 PM
Sep 2021

Hey here comes Grandpa … you can tell by the 2 basketball size eyeballs 👀
in the windshield
😳


✌🏻

 

Hugh_Lebowski

(33,643 posts)
4. I think it would drive you batty because the sun comes at all different angles on your cars windows
Tue Sep 21, 2021, 08:42 PM
Sep 2021

You'd end up with some windows really dark, and others really light, and then you take a 90 degree turn and suddenly the levels are all screwed up vs how the windows adjusted previously, and it would take some time for them to correct themselves.

Of if you park under a tree, you could end up with annoying splotches of light/dark all over your windshield.

I think it's doable, but it would take quite a sophisticated system that's built into the car and that can change opacity levels in a really smart, and fast, sort of way. Would probably need to leverage GPS and time of day and all that.

ANd if it breaks somehow it'll cost you 2000 to fix it minimum

TreasonousBastard

(43,049 posts)
5. Think about what it costs for those two inch transition lenses and guess what...
Tue Sep 21, 2021, 08:42 PM
Sep 2021

a windshield would cost.

elleng

(130,860 posts)
12. That's due to patents, I think.
Tue Sep 21, 2021, 08:51 PM
Sep 2021

Remember that 'transition' was inexpensive, BEFORE whomever patented the process/mechanism?

TreasonousBastard

(43,049 posts)
20. Most of the patents go back to the thirties, but newer stuff could...
Tue Sep 21, 2021, 09:41 PM
Sep 2021

be patented recently.

My costing info isn't from Lenscrafters, but from Zenni, a Chinese firm that sells direct.

They have several types of photochromatic lenses at various price levels. Some are pretty high.

drmeow

(5,017 posts)
17. Those two inch transitional lenses
Tue Sep 21, 2021, 08:56 PM
Sep 2021

are super expensive because 1) the required precision of the prescription grinding and 2) 25% of the global and 30% of the US eyeglass industry is controlled by one company.

"Luxottica designs, manufactures, distributes and retails its eyewear brands, including LensCrafters, Sunglass Hut, Apex by Sunglass Hut, Pearle Vision, Target Optical, Eyemed vision care plan, and Glasses.com. Its best known brands are Costa, Ray-Ban, Persol, Oliver Peoples and Oakley.

Luxottica also makes sunglasses and prescription frames for designer brands such as Chanel, Prada, Giorgio Armani, Burberry, Versace, Dolce and Gabbana, Michael Kors, Coach, Miu Miu and Tory Burch.[6][7][8][5]

In January 2017, Luxottica announced a merger with Essilor.[9] The combined entity would command more than one quarter of global value sales of eyewear.[10][5] In March 2018, the European Commission unconditionally approved the merger of Essilor and Luxottica.[11] On 1 October 2018, the new holding company EssilorLuxottica was born, resulting in combined market capitalization of approximately $70 billion.[12]

Luxottica also owns EyeMed Vision Care, a managed vision care organization in the United States.[40] As of 2014, it is the second largest vision benefits company in the United States.[41][42][43]

The company has been criticized for the high price of its brand-name glasses, such as Ray-Ban, Oakley, and several others. A 2012 60 Minutes segment focused on whether the company's extensive holdings in the industry were used to keep prices high. Luxottica owns not only a large portfolio of brands (over a dozen[44]) such as Ray-Ban and Oakley but also retailers such as Sunglass Hut and Oliver Peoples, the optical departments at Target and Sears, as well as key eye insurance groups including the second largest glasses insurance firm in the US. It has been accused of operating a complete monopoly on the optical industry and overcharging for its products; for example, temporarily dropping then-competitor Oakley from its frame design list, then, when the company stock crashed, purchasing the company, then increasing the prices of its Ray-Ban sunglasses. In addition, it has been argued that, by owning the vision insurance company EyeMed, it also controls part of the buyers' market as well.[42]"

drmeow

(5,017 posts)
27. Unfortunately
Thu Sep 23, 2021, 10:30 PM
Sep 2021

my insurance is through that %$%$ monopoly company and reimbursement from them is a PITA. Still bought my glasses at Costco cause f**k them

TreasonousBastard

(43,049 posts)
22. I would be careful here. Photochromatic lenses and films are...
Tue Sep 21, 2021, 09:52 PM
Sep 2021

temperature dependant-- if they get too hot they won't darken. That's not big deal with eyeglasses, but could be real problem with windshields. Maybe these guys solved the problem. Or maybe not.

The UN building in NYC originally had photochromatic windows, but didn't use it in a renovation.

Response to niyad (Original post)

localroger

(3,625 posts)
14. There are LCD based demo systems
Tue Sep 21, 2021, 08:53 PM
Sep 2021

They are expensive but they let you select any tint from none to nearly black arbitrarily. There are also proposals to use those for residential and business windows for passive environmental control.

Srkdqltr

(6,267 posts)
18. Not everyone needs the same level of tint. Changing light levels would be difficult
Tue Sep 21, 2021, 09:01 PM
Sep 2021

To compensate for.

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