photo gray lenses

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  #1  
Old 12-17-12, 05:30 AM
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photo gray lenses

I recently got a new pair of glasses and like I have for the last 40 yrs, I paid extra for the photo gray. Used to be the photo gray was instant dark when you stepped outside and instant clear when you went inside. Both the new pair and the one it replaced [from 2 different stores] are instant dark but when you come inside it takes in the neighborhood of a half hour for them to go back to clear.

I'd be interested in hearing from any members that wear the photo gray glasses and how theirs works. Today's glass lenses are a lot lighter than yesterdays but the photo grey option seems to have paid the price
 
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Old 12-17-12, 06:27 AM
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My daughter fits me with all the bells and whistles since I work in construction....Crizal scratch coating, polycarbonate shatter proof lenses, Titanium frames, and like you, Transitions. Mine take about 3 minutes or so to go back clear. You are right, lenses don't weigh anything nowadays. I'll ask her if there has been a change in the way they lighten/darken over the years. Interesting.
 
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Old 12-17-12, 12:21 PM
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I've ordered photogray/Transitions lenses for years, on both glass and polycarbonate lenses, and they've always taken a few minutes to darken or lighten up. My current Transitions lens are probably one year old, so I don't know if they've made any changes very recently.
 
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Old 12-17-12, 01:49 PM
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Used to be my photo gray lenses would take 1-3 minutes to go from light to dark or dark to light. Some pairs seemed to be better than others but nothing like my last 2 pair of glasses. It wouldn't be so bad but on a bright sunny day when you go in and out of the shop/barn and they don't lighten up for a long time - it's hard to see unless you have all the lights on
 
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Old 12-17-12, 02:16 PM
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I have two pairs of Transitions that I bought as part of a special and like you marksr it seems like they do take a while to clear up. Not maybe a half hour maybe around five minutes or so. One place I went to they had asked me had I been in the sun recently and I said no and asked why and the clerk said I am just asking because your glasses are still dark. Since I was in the place where I was going to buy my new pair of glasses I asked why and the clerk explained to me that over time the coating will stay dark all of the time. Actually I never noticed that much because the change was gradual over time. Still it is a shame for the price you pay to know the coating will do that.
 
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Old 12-17-12, 02:28 PM
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I first started wearing photo gray lenses in the early 70's and was immediately impressed! I don't know how many pairs of glasses I've bought in the last 40 yrs but I was always satisfied with the way the photo gray worked ..... until these last 2 pair. That is one reason I didn't go back to the shop that made my last pair.

Over the yrs I've noticed minor differences in the different pair of glasses. Some just seemed to be better than others but they were all basically the same. I don't understand the big change in how the last 2 pair respond to light. The glass lenses in the last 2 pair weigh significantly less than any of my previous glasses, not sure how the reduced weight would cause the photo gray to be less effective...... if that's even related.
 
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Old 12-17-12, 02:40 PM
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Chinese counterfeits?

.
 
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Old 12-17-12, 02:57 PM
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Ray -

It is possible, but not probable.

China is in a far different time zone and the glasses may not have had time to acclimate after the long flight due to the time difference (LOL).

Dick
 
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Old 12-17-12, 03:30 PM
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Marksr, I think my first pair back in the late 70's were called Rinauld Reactomatics. Man, that's been a long time
 
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Old 12-17-12, 04:39 PM
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Before they had plastic lens, my photo grays with the glass lens would get really dark and take a good 10 minutes to lighten. My plastic lens photo grays hardly darken at all. Don't think I will pay for that option any more.
 
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Old 12-17-12, 05:50 PM
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You want them to darken fast??? Do like I did once and forget to remove them under a welding helmet Black is "dark" right??? I have since bought diopters for the helmet.
 
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Old 12-17-12, 06:42 PM
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I have used them for years. Started driving school bus and found that when you are bhind a windshield they do not work. Anyone else found that to be true.
 
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Old 12-18-12, 03:53 AM
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I still use glass lenses so I know it's not a problem with plastic. I've always been satisfied with how the photo gray option works except for the last 2 pair. I've never noticed any issue with them not darkening enough while driving..... but I've worn glasses since 3rd grade and have never had a pair of store bought sunglasses to compare them too. My wife thinks my glasses get too dark when I'm outside but it works for me. I just have issues with them staying too dark, too long, after I come inside
 
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Old 12-18-12, 04:38 AM
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Photochromatic lenses won't darken appreciably while you are driving. Sunlight is refracted through your windshield and does not react with the properties of the lenses. She also gets me sunglasses to wear while driving with the same prescription. I do have to remove my glasses for a minute or two if I enter a really dark building from outside, at least until they equalize. But that's better than having to keep up with clip on sunglasses
 
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Old 12-18-12, 05:48 AM
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You want them to darken fast??? Do like I did once and forget to remove them under a welding helmet Black is "dark" right??? I have since bought diopters for the helmet.
Got a chuckle out of this post as it reminded me of my dad back when we use to service tanning beds (my parents owned a few stores and wholesaled beds and equipment). Everytime I'd fire up a bed to test, my dad's glasses would go instant dark.
Would take his glasses a couple minutes to tame down.
 
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Old 12-18-12, 07:21 AM
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I tried them once about 10 years ago and haven't done it again. I had the problem Michael mentioned when driving (which I do a lot of ). Last few years have been using glasses with the magnetic clip-on's which I absolutely love.
 
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Old 08-07-14, 08:52 PM
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I just bought new glass photogray lenses and they would not darken. My optical store replaced the first pair and the results were the same with the second. They are now sending this pair back to the lab and then on up the food change to get an answer. They did say these lenses were chemically tempered and in the past they had heat tempered them. This may be the problem. Photogray is a trademark of Corning Glass co and I have worn them since they first came available. Plastic lenses are not Photogray although Transitions lenses which are plastic do change color, they are "photochromatic". There are other brands of photochromic lenses that are either glass or plastic. I am a contractor and have used glass lenses to prevent scratches from job related causes. They are still vulnerable to grinding slag. JCSFlash
 
  #18  
Old 08-08-14, 04:22 AM
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Welcome to the forums JCS!

I also use glass lenses both for the scratch resistance and being a painter, I often need to clean them with lacquer thinner which would melt plastic lenses.

I remember being told yrs ago that if you set the photo grey glasses in the freezer for an hour or two it would reactivate whatever it is that makes them work. Best I can remember it did help but my memory is fuzzy and it was a long time ago

It does sound like your issue is a problem with the supplier
 
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Old 08-08-14, 07:34 AM
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I got a new pair with photo gray plus, works good in the bus and car.
 
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