00:00:00
- What do power tools
00:00:01
(drill)
00:00:02
caustic chemicals,
00:00:06
firearms,
00:00:08
(gunshots)
00:00:09
and twelve-ton jacks,
00:00:10
(jack pumps)
00:00:12
have in common?
00:00:13
Well for one thing,
00:00:14
you wouldn't want to try to
bring them on an airplane.
00:00:17
The other thing they have in common
00:00:18
is that we used these items
00:00:20
to put Poly and Trivex
lenses through their paces
00:00:25
to see how they would
perform in some real world,
00:00:29
ordinary, and extraordinary circumstances.
00:00:33
Before you go saying,
00:00:34
"I know all about Poly and Trivex"
00:00:36
I think you're gonna be surprised.
00:00:40
(upbeat music)
00:00:54
(majestic trumpet music)
00:01:02
Why would I say that I believe
that you might be surprised?
00:01:06
Well because I was.
00:01:08
I was genuinely shocked at the outcome
00:01:10
of some of the tests
that you're about to see.
00:01:14
Now three disclaimers
before we get started.
00:01:17
Disclaimer number one, I
have no vested interest
00:01:21
in the outcome of these tests.
00:01:24
I work for a whole sale optical lab,
00:01:26
not an optical lens material manufacturer.
00:01:31
Disclaimer number two:
00:01:33
I don't care which one of
these materials you use.
00:01:37
Look, that's up to you.
00:01:39
This is not Poly versus Trivex,
00:01:41
this is simply a comparison
00:01:43
of the performance of the two materials
00:01:45
because they're often mentioned
kind of in the same light.
00:01:48
Disclaimer number three,
and this is the biggie:
00:01:52
these are not scientific tests.
00:01:56
As you can clearly see, this is my garage.
00:01:59
This is not an engineering laboratory.
00:02:02
However, we did do the
very best that we could
00:02:05
working with what we have.
00:02:07
Everywhere possible I used
common, ordinary, stock lenses,
00:02:11
exactly like the ones that may very well
00:02:14
be sitting on the shelf
behind you right this minute
00:02:16
and that you sell every single day.
00:02:19
So watch this through, and as I said,
00:02:22
I think you might be surprised.
00:02:26
(majestic trumpet music)
00:02:31
- Trivex has a specific
gravity of 1.11, Poly 1.20
00:02:37
meaning that a lens made of Trivex
00:02:40
everything else being equal,
same script, same size,
00:02:43
should weigh less than
those made of polycarbonate.
00:02:48
Let's find out if that's true.
00:02:50
I've got four lenses here,
two Trivex, two Poly,
00:02:53
two different manufacturers.
00:02:56
I've got a super super accurate scale here
00:02:58
and let's just take a
look at what a couple
00:03:00
common items weigh.
00:03:03
There's a block, that's
1.985 or two grams there.
00:03:10
A leap pad, that's a quarter, .23
00:03:15
and a PD stick, PD
stick weighs 5.35 grams.
00:03:21
These are all 70 millimeter blanks
00:03:23
or cut down to 70 millimeter blanks.
00:03:26
They're all minus three,
they're all spherical,
00:03:29
they're all hard coated,
no other bells or whistles,
00:03:32
so I did the best I can to
kind of keep this real world.
00:03:34
Let's see what that weighs.
00:03:37
Alright our first Trivex is 13.555
00:03:42
Now our second Trivex is 13.81
00:03:49
and our first Poly is 13.64
00:03:57
and our last Poly is 14.0
00:04:02
so we've got roughly about
half a gram difference.
00:04:06
We're talking about the
weight of two leap pads.
00:04:09
I don't think anybody out there is gonna
00:04:11
notice a difference in weight between
00:04:13
a Trivex and a Poly in these mid-range,
00:04:15
bread and butter kinds of prescriptions.
00:04:18
Here are the numbers as they came in,
00:04:20
our winner was the Trivex,
that was the lightest,
00:04:22
but then came a Poly, not Trivex, Trivex.
00:04:26
Trivex, Poly, Trivex, Poly.
00:04:29
Between the high and the low,
00:04:31
there's less than half a gram difference,
00:04:35
and remember that we're talking about
00:04:36
full size blanks here,
00:04:38
which is not what we're
putting on our customer,
00:04:40
but this little tiny
piece of the larger blank.
00:04:44
So you can imagine that
that really becomes
00:04:46
pretty negligible.
00:04:49
(drums)
00:04:53
Industry belief is that polycarbonate
00:04:55
does have a tendency to
have some chemical problems,
00:04:58
particularly acetone,
where we're told that we'll
00:05:00
craze the lens and cause some problems.
00:05:04
Did some online research,
found this wonderful article
00:05:07
about chemical resistance,
00:05:08
and as I read through the article
00:05:10
they had a picture of this Poly lens
00:05:12
that was all milky and
white and destroyed,
00:05:15
and I read closer and
it said that it had been
00:05:16
in the acetone for 10 days.
00:05:21
I guess that's like leaving your tint tank
00:05:23
on over the weekend or something.
00:05:25
We didn't go for 10 days,
we went for 10 minutes.
00:05:29
Let's see what happened.
00:05:32
I'll give you a little bit
better close up of this,
00:05:34
but what I did was edge these lenses
00:05:36
so that there's plenty
of exposed raw material
00:05:39
to work with for the chemical to get into.
00:05:41
I actually even drilled
some holes in there
00:05:43
for added contact.
00:05:46
What I've used is some
hardware grade acetone
00:05:51
mixed with some good old
fashioned nail polish remover.
00:05:56
Kind of a 50/50 mix there.
00:05:59
And some 91% isopropyl alcohol.
00:06:03
Alright I guess it is time
to dump these into the drink.
00:06:07
We'll go Trivex, Poly, Trivex, Poly,
00:06:13
and we will start our timer.
00:06:17
About ready to pull these out,
00:06:18
I'm gonna hit them with some lens cleaner.
00:06:29
Alright, let's see what we have got here.
00:06:31
We have our Trivex lens that
was in acetone for 10 minutes,
00:06:37
I see no effects there at all.
00:06:42
Alcohol Trivex, no real ill effects there.
00:06:49
And our polycarbonate in alcohol,
00:06:54
I see no ill effects there.
00:06:56
But we are gonna take a
closer look at our Poly here.
00:07:00
I think that may have
suffered a little bit.
00:07:04
To me it doesn't even sound quite right,
00:07:06
it sounds like it's
softening a little bit.
00:07:10
Let's see.
00:07:12
Yeah I mean there's no doubt.
00:07:14
I'll take some close ups for you,
00:07:17
obviously you can't feel
it, but all the edges here
00:07:20
are kind of rolling, there's
some degration there.
00:07:24
You know, yeah, the
Poly lens, it sure did,
00:07:26
it started to break down after
15 minutes in the acetone
00:07:29
with all that exposed edge.
00:07:32
In the real world, what are we gonna do?
00:07:34
We're gonna put a little
acetone on a, dab on a cloth
00:07:37
and clean of some lens
markings or something.
00:07:39
That's gonna be on the scratch coating,
00:07:42
it's not gonna be on the raw surface,
00:07:44
so you know, who can say?
00:07:46
Doesn't mean that down the road
00:07:48
that these chemicals may
have an effect on the lens,
00:07:51
but obviously we're not testing that.
00:07:54
(majestic trumpet music)
00:07:58
We are taught the higher the Abbe value
00:08:01
the better the optics of the lens,
00:08:03
or less prone to chromatic
aberration that it will be.
00:08:07
Trivex is in the forties,
depending on the manufacturer,
00:08:11
polycarbonate in the thirties,
00:08:13
depending on who's making the lens.
00:08:15
All things considered, we
should have better optics
00:08:18
in a Trivex lens than a Poly.
00:08:20
I think we may actually have caught
00:08:24
the very concept of Abbe,
which is really kind of cool.
00:08:27
Here are the results.
00:08:29
Here's a contraocular view with,
00:08:32
for the lack of a better
term, no vertex at all.
00:08:35
Here's a contraocular view with about
00:08:38
three quarters of an inch of vertex.
00:08:41
Here is a contraocular view
00:08:43
with about an inch and a half of vertex.
00:08:49
Here is an ocular view with no vertex.
00:08:53
Here is an ocular view with about
00:08:55
three quarters of an inch of vertex.
00:08:57
Here is where things get interesting.
00:09:01
This is an ocular view with
about an inch and a half
00:09:03
of vertex.
00:09:05
Look closely, and you can actually see
00:09:07
some color dispersion at
the periphery of each lens.
00:09:11
I'll let you decide how
much you think you see.
00:09:19
This one for me was kind of inconclusive.
00:09:23
I think I see a little bit
more of color dispersion,
00:09:26
a wider range of color in
the Poly lens periphery
00:09:30
than I do on the Trivex.
00:09:32
I can't really say for sure,
00:09:34
and I think that the optics
are a little bit clearer,
00:09:36
it seems like you can see a crisper
00:09:38
letter out a little bit
further in the Trivex
00:09:41
than you can in the Poly, but
I will let you decide that one
00:09:45
(majestic trumpet music)
00:09:53
Tensile strength is, if you've ever played
00:09:54
tug of war with your dog,
00:09:56
you know, you've got the rope,
00:09:59
and the force between your
hand and the dog's mouth,
00:10:02
that's tensile strength,
it's a pulling force.
00:10:05
We ran this test in two ways.
00:10:06
We did a pull test and sort
of a push test as well.
00:10:10
Trivex is a stronger tensile strength,
00:10:13
it comes in at 61.2, Poly, 44.9.
00:10:17
Trivex lens should be stronger
in the tensile strength pull.
00:10:23
Let's find out if that's true.
00:10:26
Alright this is actually test number three
00:10:28
for tensile strength
00:10:31
and these lenses are starting
to get a little bit distorted.
00:10:36
This is test three because the first test
00:10:38
I actually broke the cable,
00:10:41
the cable was rated for 96 pounds
00:10:44
and it broke before the lens did.
00:10:46
Then I went to a three 32nds cable
00:10:49
and the cable actually
pulled out of the ferrule
00:10:52
before the lens broke.
00:10:54
So let me give this one more try.
00:10:56
If I have a cable failure,
00:10:58
either in the cable itself or the ferrule,
00:11:00
we're just gonna call it a lost cause.
00:11:03
But let's give this one more
try with our 12 ton jack
00:11:07
and see if we can get
one of these two lenses
00:11:10
to actually break for us.
00:11:13
(jack pumping)
00:11:18
I would say we have a winner.
00:11:20
And the winner is actually Trivex.
00:11:23
Alright, and polycarbonate is still to go.
00:11:27
Let's see what we can do with that.
00:11:31
And we pulled the cable again, so,
00:11:34
there is our test result
for tensile strength.
00:11:38
Our Trivex lens broke before
our polycarbonate did.
00:11:42
We posted on social media,
asked for some feedback,
00:11:45
suggestions for other
tests and other things
00:11:46
that we could do during this series.
00:11:49
One thing that came up was
00:11:51
tensile strength can be a pulling force,
00:11:53
then in a way, tensile
strength could also be
00:11:55
a pushing force.
00:11:58
And in particular people
were interested in
00:12:00
the old story about leaving your glasses
00:12:03
on the dashboard of the car.
00:12:06
I went out and shot the
dashboard of our car,
00:12:08
windows up, August, South
Carolina, bright sunshine.
00:12:11
I got about 195 degrees.
00:12:14
Somebody else insisted that
that can get up to 300,
00:12:18
so I kind of shot for around the 250 mark.
00:12:21
Let's see what happens,
00:12:24
and once again, the results
here are kind of startling.
00:12:27
Here's the set up.
00:12:28
What I did was try to replicate
00:12:31
an old style three-piece mount.
00:12:33
I went a step further, I
drilled through the lens
00:12:36
and actually tapped the hole,
00:12:38
so this is actually threaded through
00:12:40
leaving even less room for
expansion and contraction
00:12:42
than an open hole would.
00:12:45
Got a washer, washer, nut,
snugged everything down,
00:12:49
and the assumption is of course that
00:12:51
everything here is going
to expand and contract
00:12:53
at a different rate.
00:12:54
So let's pop this into the oven,
00:12:58
and what I'm doing, I'm just
maintaining the temperature,
00:13:01
building it up real real nice and slow
00:13:04
from the 100, 150, 200,
00:13:07
and then the magic moment appears,
00:13:10
I'm hitting the 280 mark, 270s, 265,
00:13:16
and this is where things started
to get really interesting.
00:13:21
And yes, those are a
couple of melted lenses.
00:13:25
Just to add insult to injury,
00:13:27
I took those out of the
almost 300 degree oven
00:13:30
and plunged them into some nice ice water,
00:13:33
and regardless of how bad that lens looks,
00:13:37
nothing really bad happened
at the insertion point.
00:13:41
I'm sure that that nut, bolt, and washer
00:13:43
are were expanding and
contracting at different rates,
00:13:46
but did not crack near that area.
00:13:49
Last I did was really,
really grabbed a hold of that
00:13:53
and yanked it around, you know,
00:13:54
there's no inherent weakness there even.
00:13:58
There's some nice close up shots.
00:14:00
Again, wow, that's one ugly
looking pair of glasses
00:14:04
if you left them on your dashboard.
00:14:06
So what we're really
concerned about is there,
00:14:08
obviously there's no cracking,
no crazing, no splinters.
00:14:13
This is your Trivex, no
cracks, no splinters.
00:14:18
For tensile strength, I
think it's pretty clear
00:14:21
that either one of these materials
00:14:22
is going to make a fine choice
for a drill mount frame.
00:14:26
(drums)
00:14:30
I shot some video of this,
00:14:32
and I've got some really nice close ups
00:14:34
of the finished edges
of both Trivex and Poly.
00:14:38
Thing is that we have got Santinelli's
00:14:40
absolute state of the art,
top of the line, Lex 1200,
00:14:44
so absolutely everything you throw at it
00:14:47
comes out looking beautiful.
00:14:49
I give Trivex about an A minus
00:14:51
where Poly is a B plus.
00:14:54
Trivex just simply finishes
a little bit nicer.
00:14:57
Now as far as the actual physical act
00:14:59
of cutting those materials,
00:15:02
man, Trivex is some quirky stuff,
00:15:04
we're working on a
separate video for that,
00:15:06
but that is for another time.
00:15:08
(saw)
00:15:25
Super important, Trivex
is rather tricky to edge.
00:15:29
But there are some things you
can do to make that better.
00:15:32
Basically this all boils down to,
00:15:34
when pretty counts, use Trivex.
00:15:38
(trumpet)
00:15:43
We are told by the industry that Trivex is
00:15:45
the very best thing for drill mounts.
00:15:49
Probably is, can't say for sure,
00:15:51
but here are some results of a
little drill test that I did.
00:15:56
I went online and I found
a really good article
00:15:58
on the best practices to use when drilling
00:16:02
the two materials.
00:16:03
So what I'm gonna do
is the exact opposite.
00:16:06
Rather than have a
really slow, methodical,
00:16:09
almost like a hand drilling speed,
00:16:12
I'm gonna be running this thing at
00:16:15
540 RPM.
00:16:17
It said be sure you use
very very sharp drill bits.
00:16:21
Well, I work with metal a lot,
00:16:23
so I can guarantee you that my drill bits
00:16:24
are not all that sharp.
00:16:27
It says be sure to try
to let the material cool
00:16:29
by drilling in, releasing,
drilling in, releasing.
00:16:33
I'm just gonna be running these drill bits
00:16:34
right on through this material.
00:16:36
(upbeat music)
00:16:52
I knew there was one more
thing I wanted to say here.
00:16:56
The way I'm doing this, I'm
gonna generate a lot of heat,
00:16:59
and heat damage to the material
during the drilling process
00:17:02
does not show up immediately,
00:17:04
so to be fair, that is gonna
create an issue down the road.
00:17:08
So what we're really
looking at here today,
00:17:11
the results are gonna be the quality
00:17:13
of the holes that we're drilling.
00:17:17
Here's a close up of the Trivex lens
00:17:19
and we're gonna take a
closer look at the hole
00:17:21
indicated by the red arrow.
00:17:24
Here's a close up of the Poly lens,
00:17:26
and we'll look at the hole
indicated by the arrow.
00:17:31
And what I want you to look at,
00:17:32
look really closely at
the wall of the hole.
00:17:36
See how much cleaner it is on the Trivex?
00:17:39
And then look at the Poly,
00:17:40
and see how it kind of chews the material
00:17:43
rather than cuts nice and clean?
00:17:45
That's really the big difference there.
00:17:48
I would give Trivex drilling
an A, Poly an A minus.
00:17:51
Much for the same reasons
that I gave those scores,
00:17:53
similar scores, to edging.
00:17:56
Trivex simply turns out cleaner,
00:18:00
it has a more finished,
sharp, crisp clean edge,
00:18:05
drill hole pattern than
polycarbonate does.
00:18:09
(majestic trumpet music)
00:18:15
Trivex, depending on who's making it,
00:18:17
has an index of refraction of about 1.53.
00:18:22
Poly, pretty consistent, 1.586.
00:18:26
The higher the index of refraction,
00:18:28
the thinner the lens should be.
00:18:30
So Poly should be our winner here.
00:18:33
Let's find out if that's true.
00:18:36
This is what we're gonna do.
00:18:37
We're gonna measure three spots
on each of these four lenses
00:18:40
and see what we come up with,
00:18:42
and I'm going to kind of do
00:18:44
a little fast forward thing here for you.
00:18:46
So just bear with me.
00:18:47
We're gonna be popping the
numbers up as I go along,
00:18:49
then we'll do an average
and post the results.
00:18:57
Here are the results of our averages
00:19:00
of the measurements around the edge
00:19:02
of each of those lenses.
00:19:05
The thinnest one came in as a Poly,
00:19:07
which you might expect, at 4.96.
00:19:10
Then we have a tie, Poly
and Trivex, 5.11, 5.11
00:19:16
and then one of the Trivex was at 5.22.
00:19:20
A difference of only .26 millimeters,
00:19:24
again in a full size blank.
00:19:26
That's not what we're selling.
00:19:28
We're selling these.
00:19:30
So again, just like weight really,
00:19:32
you know, this is really negligible,
00:19:35
especially in these bread
and butter prescriptions.
00:19:38
Not really gonna make a
difference in full edge thickness.
00:19:42
(drums)
00:19:47
This was a truly startling one.
00:19:49
That's me going
00:19:52
You know, all you ever hear, you know,
00:19:54
polycarbonate, it's safe for
kids, super impact resistant,
00:19:57
safety, bullet proof.
00:20:00
Trivex, equal to or
better than polycarbonate.
00:20:05
Well it turns out that in reality
00:20:09
the impact resistance of Poly or Trivex
00:20:13
depends solely about the coating
or coatings that it gets.
00:20:20
Be prepared for a bit of a shock.
00:20:22
In case you haven't figured it out by now,
00:20:24
I'm just a big kid, so I
still love hitting things
00:20:28
with a hammer to see what happens.
00:20:31
Here we have a stock single
vision, uncut, minus 2 Trivex.
00:20:39
And a stock single vision,
uncut, minus 2 Poly.
00:20:50
Okay, well there's a, well
let's just say, a huge surprise.
00:20:54
Trivex, nothing.
00:20:56
This particular series
of polycarbonate lenses
00:20:59
shattered like a piece of glass.
00:21:06
And one more time on the
Trivex, just for good measure.
00:21:16
And because no real impact test
is complete without firearms
00:21:20
we took these lenses out to the range
00:21:22
to see how they would hold up under fire.
00:21:30
For my first test, I
fired a .177 lead pellet
00:21:34
at both the Poly and the Trivex lens.
00:21:38
(gunshot)
00:21:39
As you can see, the lens
made of Trivex shattered,
00:21:44
and the lens made of Poly
actually repelled the pellet.
00:21:49
After that I moved to a .22 caliber bullet
00:21:53
at a range of approximately 25 yards.
00:21:56
I only shot the Poly
since the Trivex shattered
00:21:58
in the last test.
00:22:00
Here you can see the bullet
did pass through the lens,
00:22:03
yet the lens deformed
and actually reclosed
00:22:06
and it didn't shatter.
00:22:10
For impact resistance, all I
can say for myself is, wow.
00:22:14
I did not expect a Trivex lens to shatter
00:22:17
when I hit it with a pellet at 10 meters.
00:22:19
I did not expect one of
the Poly lenses to shatter
00:22:22
when I hit it with a hammer.
00:22:24
Those results made us do some more digging
00:22:28
and we ended up talking with the companies
00:22:29
that manufacture the material,
manufacture the lenses,
00:22:34
and manufacture the coatings
that go on the lenses.
00:22:37
I'm gonna paraphrase what we
got back from those companies
00:22:40
and what we found online in three parts.
00:22:43
Please pay attention here,
00:22:45
because this is really, really important.
00:22:49
Differences in the manufacturing process,
00:22:52
curing times, curing temperatures,
00:22:54
and mold-release agents
can play a key part
00:22:58
in final lens performance.
00:23:02
That is why labs have a
challenge on their hands.
00:23:05
If they assume a lens is the same
00:23:07
across all manufacturers,
and they expect it to perform
00:23:10
the same way with the same coating stack,
00:23:13
it simply may not behave the same.
00:23:17
Labs specifically have to test
each manufacturer of the lens
00:23:22
and each specific coating
for impact performance.
00:23:26
They cannot assume Company A's lenses
00:23:29
will behave the same
as Company B's lenses,
00:23:33
even with the same type of
monomer and coating stack.
00:23:37
One.
00:23:39
And if you think you missed something,
00:23:40
just rewind and listen to it again.
00:23:41
It's a lot to take in there.
00:23:44
Trivex claims to be as strong
or stronger than polycarbonate
00:23:48
in impact resistance.
00:23:50
This is not the case when
the product is scratch coated
00:23:53
or AR coated.
00:23:56
An abrasion resistant
coating is going to be harder
00:23:59
and more brittle than the lens
00:24:01
in order to be abrasion resistant.
00:24:04
This makes the lens easier
to break due to that coating.
00:24:09
The average coating
reduces the strength 45%
00:24:14
and the average AR coating
reduces the strength
00:24:18
another 20% for a total of 65%.
00:24:24
Wow.
00:24:24
And this one, nice, short, sweet.
00:24:27
Coatings may alter the impact resistance
00:24:30
and overall performance
of any lens material.
00:24:34
Any lens material.
00:24:37
So think for yourself
00:24:39
and think about those statements.
00:24:41
And again, if you missed something,
00:24:42
rewind it, listen to it again.
00:24:45
And because I am just a big kid at heart,
00:24:48
anything worth doing, is worth overdoing.
00:24:51
(gunshots)
00:24:56
(explosion)
00:25:01
(majestic trumpet music)
00:25:09
One of the categories
that's always included
00:25:10
whenever there's a side by side
00:25:12
or a lens material
overview is UV protection.
00:25:17
And Trivex is shown as having 100%
00:25:20
and Poly is shown as having 100%.
00:25:24
Let's see if that's true.
00:25:26
And first up is a Poly
lens which blocks 97%
00:25:31
or allows three percent
of UV light through.
00:25:36
And then Trivex which blocks 100%
00:25:40
or allows none of the UV light through.
00:25:45
For UV, our quick and easy one.
00:25:47
Both are rated at 100,
but would I sell Poly
00:25:51
as 100% UV protection,
00:25:53
no I guess I'd sell it as 97%.
00:25:57
Still passes, right?
00:25:59
(drums)
00:26:04
The other one of those things
that's always mentioned
00:26:06
in lens material brochures
is the tintability
00:26:10
or tinting capability of the lens.
00:26:12
And I guarantee, I admit
you can go to my website
00:26:17
and you'll see Trivex,
great, easy to tint,
00:26:19
nothing to it, A plus.
00:26:21
Poly can't be tinted, D minus,
F material, doesn't work.
00:26:27
Or is it like a lot of these other things.
00:26:31
Is it really all about the coating.
00:26:34
Let's find out.
00:26:36
Now of course Laramy-K's an independent
00:26:38
wholesale optical lab.
00:26:40
We do a whole lot of tinting,
00:26:42
years and years of experience.
00:26:44
I'm gonna get you just look
at this for a moment or two
00:26:48
and let you think about it,
00:26:49
because I want you to try to predict
00:26:52
which one is which.
00:26:55
Made your decision?
00:26:57
Good, because you're probably wrong.
00:27:01
This, believe it or not,
is a stock Trivex lens,
00:27:04
one just like we pulled
out of the envelopes
00:27:06
for the other test,
put into the tint tank,
00:27:09
same one as these for 10
full minutes, nothing.
00:27:13
Basically zip.
00:27:15
This was a stock polycarbonate lens
00:27:18
dumped into the tank for 10 minutes,
00:27:21
not a tintable Poly, just
an ordinary stock Poly lens.
00:27:25
This was a surfaced Trivex.
00:27:30
This is a surfaced Poly.
00:27:33
So to my eye I think our darkest
00:27:35
is probably this Poly, the surfaced one.
00:27:38
Followed by Trifex,
followed by a stock Poly,
00:27:43
and then followed by
what basically is nothing
00:27:45
in this particular Trivex.
00:27:47
For tinting, it's just
like impact resistance.
00:27:50
It all comes down to what
coating is on the lens.
00:27:54
If you want a great polycarbonate
00:27:57
with a sunglass tint, Simcoe makes a great
00:28:01
tintable poly lens, other than that,
00:28:04
you're gonna have to go to your lab
00:28:05
and you're going to have to tell them
00:28:06
exactly what material you want,
00:28:08
then tell them that you want it tinted
00:28:09
and they will put on
the appropriate coating
00:28:12
to allow that to happen.
00:28:15
(trumpets)
00:28:19
In the past, in my head,
00:28:21
I have Trifex be fairly expensive
00:28:23
and having somewhat limited availability.
00:28:25
It's nice to be right once in a while.
00:28:29
Clear polycarbonate, you have 11 choices,
00:28:32
single one in Trivex.
00:28:34
You have a low price of
3.44 an average of six.
00:28:37
That's pretty cheap, you
can make some money there.
00:28:39
Clear Trivex is going at 22.
00:28:42
AR coated you have 18
choices in polycarbonate,
00:28:46
seven in Trivex, more than double,
00:28:48
and in polarized polycarbonate,
00:28:50
you have seven choices to one in Trivex
00:28:53
with a low of 18 for that
00:28:56
and an average for the Trivex of 31.
00:28:59
Trivex, availability, maybe around a C.
00:29:02
Polycarbonate, A, tons and tons of
00:29:04
every style imaginable available.
00:29:07
Price, yes, Trivex consistently
runs more expensive
00:29:10
than Poly.
00:29:12
As I mentioned in the
introduction to this piece,
00:29:15
I was genuinely started at the
results of some of the tests.
00:29:19
Turns out, and this is
really really important,
00:29:24
that unless you know the material,
00:29:28
the process, and the coating,
00:29:31
you cannot predict how
that lens will perform
00:29:34
under different circumstances.
00:29:38
Really important.
00:29:40
I just want to leave you with this,
00:29:43
before you go selling either
material, Trivex or Poly,
00:29:47
as having specific characteristics,
00:29:50
impact resistance, chemical
resistance, tintability,
00:29:55
just think twice,
00:29:56
and that's where I'm gonna leave this.
00:29:58
Be careful out there.
00:30:00
You don't know how these
materials will perform
00:30:04
until you know the
coatings that are on them.
00:30:08
Think about it.
00:30:14
Price and availability,
00:30:16
I knew in my own head in the past
00:30:18
that Trivex, (stuttering)
00:30:24
These tests.
00:30:25
I have no vested interest here.
00:30:29
(coughs)
00:30:34
Or a drill (stutters)
00:30:39
For price and availability,
00:30:41
hey it's nice to be once right.
00:30:44
(coughs)
