I know that scratches cannot be "buffed out" without affecting the shape and correction of a lens, but I am wondering if they can be filled.
Does anyone know the composition of the raw material...
Type: Posts; User: Kurt Brandon; Keyword(s):
I know that scratches cannot be "buffed out" without affecting the shape and correction of a lens, but I am wondering if they can be filled.
Does anyone know the composition of the raw material...
The URL is "http://www.LensExchange.com".
Normally, when I fail to get a response from a listed contact address, I look the domain name up at the following site:
...
What does the LensExchange.com site do?
On two occasions I have emailed info@LensExchange.com asking for information, and neither query was answered.
Does anyone know "what gives" with the...
Andrea is apparently correct in that glass is considered to be a "supercooled liquid" and not actually a solid at all. At least that is what I have read.
You people are a gold mine of knowledge....
Does aging have any effect on plastic lenses? I have been led to believe that old lenses get both brittle and hard to tint.
Secondly, I have been told the the envelopes that lenses are shipped in...
I found the web site for Duro-Test flourescent lamps (search using "vita-lite" as the search term). They want $50 for a small one!
How well do the quartz lamps work?
As I recall, they generate...
In the Essilor document on tinting which is available in the Files section, a recommendation is made for the "Duro test Vita lite" lamp because of its high Color Rendering Index (96).
I have been...
Regarding marking/blocking polarized lenses,
my present conception is as follows:
1. On a spherical lens, you may safely rotate the lens so that the lensometer dot line coincides with a line...
What is the difference between the "180 line" and the axis of polarization?
My present conception is as follows:
1. On a spherical lens, you may safely rotate the lens so that the lensometer...
One of the edgers that I use at work is an A.I.T Mark 5 Deluxe.
On several of the plastic lenses that I have edged, I have noticed edge chipping sufficient to make the lense unusuable.
These...
1) On the polarized lenses there were two semi-circular indentations on the periphery, 180° apart. I assume that the axis of polarization lies along a line connecting the two.
2) It sounds as...
In the book "Essentials for Ophthalmic Lens Work", at the top of page 107, is a photograph of a Weco (?) pattern-making machine.
Can anyone tell me about how much these machines cost?
Recently, a pair of polarizing sunglasses was submitted to us to build. I was told that polarizing lenses are not spotted in the same way as regular lenses, and that if there was even a minor error...
At the place where I work, we use a Santinelli LE-7070 edger. Normally this edger does quite good work. But in the short time I have worked there (since June 2), the edger has on two occasions...
I recently was hired as an Optical Lab Technician at a firm that fills eyeglass prescriptions.
Is there a recommended reading list for such as me? I am strictly a novice.
Thanks,
Kurt