Never Use A Conventional Lens Design Again Allentown Optical's Digital Lens Introduction

 

ALLENTOWN OPTICAL’S DIGITAL DESIGNS

Conventional Progressives

Traditionally, progressive lenses have been produced using a molded blank that incorporates the progressive surface on the front side. These progressive blanks are produced in large quantities, and are available in multiple materials, each with a range of base curves, each with several add values. The wearer prescription is generated using traditional equipment to cut a simple curve, a sphere or a torus, on the back side of the lens.

The progressive design itself is fixed, molded on the front surface, and it doesn’t change for different prescriptions. All wearers of a particular progressive will end up getting identical lens designs. However, ideally a progressive lens should be different for each wearer, and the design should change not only with the prescription, but also with other factors such as the lens material, the selected frame, and the visual needs of the wearer. With conventional progressives, personalization for each wearer is not possible, and that is a significant limitation.


Personalization

Personalization can make a big difference in ophthalmic lenses, both single vision and progressive. When a lens is optimized for a single wearer, the best possible optics are achieved. Even two wearers with the same prescription and lens material will receive different lenses comprehensively tailored to their individual biometrics and frame selection. Each wearer will experience the best quality of vision and superior comfort.

Digital Progressive Lenses

What are the advantages
of digital surfacing?

Digital surfacing technology has been a real revolution in the optical industry. This lens production technology allows the optical lab to generate and polish a complex surface on the back side that is specifically designed for each lens. With this new production method, the lens is processed from a molded blank that has a spherical front surface. The progressive design, combined with the prescription, is processed on the back surface of the lens.
The main advantage offered by this technology is the ability to produce personalized lenses. The lens design becomes unique, according to the prescription, material, frame and even the visual preferences selected by each wearer.

What makes some
digital lenses better?

The term “digital lens” applies to any lens made with digital surfacing technology. But in order to achieve optical performance superior to that of conventional progressives, the lens has to be calculated using an advanced lens design technology. The digital surface has to be computed in a way that uses the wearer’s individual information to provide better vision, on every point of the lens, for that specific person. And this is exactly what
Digital Ray-Path® does.

 

Horizontal Box Size (HBOX), Vertical Box Size (VBOX) and Distance Between Lenses (DBL)

Frame dimensions are used to calculate the final diameter and thickness of the lens. Lens diameter will be selected automatically to obtain the minimum possible thickness. Frame dimensions also improve the efficiency of the optimization, because the final lens is optimized only where it is needed. Finally, pupil heights can be used to automatically select the best corridor length in progressive lenses, in cases where it is not specifically indicated by the ECP.

 

 Pantoscopic Angle (PANTO)

This is the angle in the vertical plane between the optical axis of a spectacle lens and the visual axis of the eye in primary position.

Wrap Angle (ZTILT)

Frame curvature

Back Vertex Distance (BVD)

Distance between the cornea and the back surface of the lens.
Pantoscopic, wrap angle and back vertex distance are used by Digital Ray-Path® to factor in the real position of the lens in front of the eye.

 

Digital Special

Allentown Optical's NEW Dip Coater Producing Superior AR coatings

Hard-coating by dip is the guarantee for premium scratch resistance applied to a lens. Machine, cleaning and hard-coating application adapted to the anti-reflection process are paramount for the market success. With the cleaning and hard-coating line CHC 20 , Allentown Optical Corp. provides a superior tool and a full solution integrated into our lab.

UV and AR 

Below is a comparison of Allentown Optical’s NEW AR COATINGS Vs. off the shelf AR. The graph shows the UV reflection off the backside of the lens. Notice how Allentown Optical’s AR levels off at 400nm, while normal AR increases rapidly and reflects back into the wearer’s eyes.

Ultraviolet A UVA 400 – 315 nm
Ultraviolet B UVB 315 – 280 nm  

Off the Shelf AR

Off the Shelf AR

 

 

Allentown Optical Corp. COBALT UV

Cobalt UV Cc5

Allentown Optical Retinal Bliss HEV


Retinal Bliss HEV Cc

Allentown Optical’s AR

Allentown Optical's AR Selections

Allentown Optical’s AR Selections

AO Sentinel Plus UV AR

     Contains layers for UV, (reduces the UV reflections to less than 2%)  anti-static, Super Hydro and an Overcoat for edging. Finished in a Green color.

AO RB Tech AR With UV and HEV  (High Energy Visible Light) Protection

Contains layers for UV, Super Hydro and Overcoat for Edging.

Most lens treatments reflect UV and HEV rays from the backside of the eyeglass lens into the wearer’s eyes. However, RB Tech coating reduces the amount of reflected UVA and HEV rays by up to 95 percent when compared to non-UV AR coatings.

 AO Cobalt Plus AR

   Contains layers for Super Hydro and an Overcoat for edging. Finished as a Blue color.

AO Guardian AR

   Enhanced Hydro with a Green color.

Allentown Optical’s NEW Dip Coater

Producing Industry Leading AR coatings

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The combination of dip coating (a super hard base for AR coats) and our superior AR recipes allows Allentown Optical to produce state of  the art Anti Reflection coatings.

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Allentown Optical Work in Progress Reporting System

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. This feature needs to be set up at the lab, call 610-433-5269 or http://www.allentownoptical.com/contact-us-2/

SAMPLE EMAIL FAX

Allentown Optical Account's Work in Progress

Allentown Optical Account’s Work in Progress

Another option for checking your work is to use our Lens Order Status Site. This data is updated every 30 minutes. You will need to supply your username and password after using this link Lens Order Status

 Log in Page

Work in progress log in page

Work in progress log in page

Report Page

Live Work in Progress

Live Work in Progress

 

ALLENTOWN OPTICAL PARTNERS WITH LEYBOLD OPTICS; ADD’S FULL SERVICE, ANTI-REFLECTIVE COATING LAB



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

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Allentown Optical Corp.’s Premier AR Facility

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

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She Blinded Me with Science….the effect of electronics on our eyes

She Blinded Me with Science….the effect of electronics on our eyes.

 

She Blinded Me with Science….the effect of electronics on our eyes qtmi.net/she-blinded-me-with-science-the-effect-of-electronics-on-our-eyes/

Digital Eye Strain (DES) coatings are all the rage, and they should be.  They potentially serve a very big benefit.  All of our electronics are emitting vast amounts of HEV light

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Four All & Mini Progressive

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Checking Prism on a Progressive Lens

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

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Refraction Index of Various Substances

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

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Wrap Prescription Sunglasses

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

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