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UV and AR Listed web resources concerning UV and AR coatings Journal of the American Optometric Association Anti-reflective coatings reflect ultraviolet radiation Karl Citek Optometry (St. Louis, Mo.) 1 March 2008 (volume 79 issue 3 Pages 143-148 DOI: 10.1016/j.optm.2007.08.019) http://www.optometryjaoa.com/article/S1529-1839(07)00577-5/abstract Why UV and AR post at UV or Not UV – Is Not Really The Continue reading UV Protection Reports Sent using Fax or Email Internet Faxing is simply using the Internet to send you Work in Process reports instead of using a fax machine or fax modem. Since it is web based, Allentown Optical can send you emails and faxes anytime, anywhere. All reports are emailed faxed at the end of the day. Continue reading Allentown Optical Work in Progress Reporting System #gallery-1 { margin: auto; } #gallery-1 .gallery-item { float: left; margin-top: 10px; text-align: center; width: 50%; } #gallery-1 img { border: 2px solid #cfcfcf; } #gallery-1 .gallery-caption { margin-left: 0; } FOUR ALL AND MINI FOUR ALL AND MINI Contact: George Kim, V.P., Leybold Optics FOR IMMEDIATE RELEASE ALLENTOWN OPTICAL PARTNERS WITH LEYBOLD OPTICS; ADD’S FULL SERVICE, ANTI-REFLECTIVE COATING LAB Leybold Optics, USA announces that Allentown Optical has acquired state-of-the-art Anti-Reflective coating technology, specifically a CCSII A/R coating machine & premium A/R coating processes. The acquisition of this equipment and technology from Leybold Continue reading ALLENTOWN OPTICAL PARTNERS WITH LEYBOLD OPTICS; ADD’S FULL SERVICE, ANTI-REFLECTIVE COATING LAB Allentown Optical Corp. has installed state of the art AR equipment from Leybold Optics.
Mike Sprague loads CCS AR dome Mike Sprague checks CCS parameters Joe Felker loads CCS AR recipe Joe Felker at quality control AR Room AR Room Continue reading Allentown Optical Corp.’s Premier AR Facility prism reference point Taken from from http://www.zeiss.com web site: For a progressive power lens or semifinished lens blank, that point on the front surface stipulated by the manufacturer at which the prismatic effect of the finished lens is determinde. NOTE: The prism measured is the resultant of prescribed prism Continue reading Checking Prism on a Progressive Lens In 1621, a Dutch physicist named Willebrord Snell (1591-1626), derived the relationship between the different angles of light as it passes from one transperent medium to another. When light passes from one transparent medium to another, it bends according to Snell’s law which states: that the angle of refraction is related to the Continue reading Refraction Index of Various Substances There is high demand for sunwear in wrap form; it is estimated that as many as 25% of the prescription market is dispensed in highly curved lenses. Besides looking cool, wrap sunwear also provides better wind, dust, and sun protection than other lenses since they fit close and reduce light leak. However, the lens position Continue reading Wrap Prescription Sunglasses Transposing a Rx prescription is simply converting the prescription from minus cylinder notation to plus cylinder notation. The optical properties of the prescription remain the same. Procedure: 1) Add the cylinder power to the sphere power to arrive at the new sphere power. 2) Change the sign of the cylinder power. 3) Add or subtract Continue reading Transposition It is that time of year when we start thinking about back to school and children’s eyewear. And we do not think about kids’ eyewear without thinking about lens materials. The standard lens material for years has been polycarbonate. Seven years ago we had a newcomer to the lens material arena. In 2001, Trivex hit Continue reading Trivex for Kids |
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