Custom. Lens Design Solution. powered by Crossbows

Transcription

1 Custom Lens Design Solution powered by Crossbows

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3 Contents The Cooperation Satisloh & Crossbows... 2 Freeform Lens Design Technology... 4 Characteristics... 6 Software... 8 Solution... The Designs Custom Progressive Designs Custom Lifestyle Designs... 2 Custom Blended Bifocal Custom Single Vision Designs Technical Information At a Glance... 29

4 The Cooperation Satisloh & Crossbows Freeform lens technology is the greatest step forward for lens manufacturing in a generation. Advances in precision freeform equipment and lens design software have made this development a reality. The technology provides lens manufacturers with new and exciting opportunities, enabling them to offer a wide range of high performance, state-of-the-art lenses. Together Satisloh and Crossbows provide the knowledge and support to simplify the entire process. Being part of the same group and committed to this joint cooperation guarantees a fast, efficient and successful introduction of this technology. This partnership will take full responsibility for process implementation and support, providing the ideal solution and ensuring customers are always kept at the forefront of this exciting technology.

5 2 3 Satisloh After many years supplying quality turn-key manufacturing solutions for Rx labs, Satisloh, the specialist in surfacing, coating and finishing of ophthalmic lenses takes the next step. Now Satisloh provides freeform design solutions in cooperation with Crossbows Optical Ltd., the ideal experienced partner in optical designs. Crossbows Crossbows Optical Ltd. was formed in 1987 although ophthalmic products have been manufactured in their factory since With this long history, Crossbows has gained a wealth of experience in the design and manufacturing of a wide range of ophthalmic products. Since 24 Crossbows has utilised their extensive progressive lens design expertise to develop advanced freeform software for back surface progressive lenses. The Ideal Partnership Combining a leading freeform machine manufacturer with an expert freeform software developer provides the perfect solution. This guarantees total compatibility of machines and software for effortless implementation of the freeform process. A machine specialist and a lens design software specialist with many years experience Perfect integration of machine and software Evaluation and quality reporting Service and support from a single source

6 Freeform Lens Design Technology What is a freeform lens? A freeform lens normally has a spherical front surface and a complex, three-dimensional back surface which incorporates the patient s prescription. In the case of a freeform progressive lens, the back surface geometry includes the progressive design. The freeform process utilises semi-finished spherical lenses which are readily available in a wide range of base curves and indices. These lenses are accurately machined on the back side using state-of-the-art generating and polishing equipment to create the exact prescription surface. the front surface is a simple spherical surface the back surface is a complex three-dimensional surface

7 4 Technology for freeform lenses General benefits Provides the flexibility to offer a wider range of high level products, even for the smaller optical laboratory Only requires a stock of semi-finished spheres in each material from any quality source Lab management is simplified with significantly fewer SKUs Progressive surface is closer to the eye - providing broader fields of view in the corridor and reading area Accurately reproduces the intended progressive design Prescription accuracy is not limited by the tooling steps available in the laboratory Accurate prescription alignment is guaranteed Custom: The Satisloh & Crossbows freeform solution Special benefits Provides technically advanced, low distortion soft aspheric designs A range of designs which easily fit a wide selection of frame shapes and sizes Designs provide superior comfort with fast and successful adaptation New indices or designs can be added with a software upgrade Available in an extensive range of materials and indices Variable design decentration option allows the use of smaller blanks, resulting in thinner and lighter lenses Can also operate with circular or elliptical crib shapes providing the thinnest and lightest lenses Special curve control in the reading area for flatter, more cosmetically appealing lenses Provides exact lens thickness control at any point - ideal for rimless frames Incorporates both prism thinning and prescription prism Allows capability to create your own brand name Advanced features EyeView technology: Multipoint ray-tracing giving improved overall performance which is consistent over the full range of prescription powers Optics First: Patented premium progressive lens design for superior comfort Compensated prescription: adjusts lens prescription for back vertex distance, pantoscopic tilt and face bow Blended edges: flattens the concave curvature to provide a reduction in edge thickness Variable inset: adjusts inset for different near viewing distance, back vertex distance, lens power and monocular pupillary distance

8 Freeform Lens Design Characteristics Satisloh & Crossbows Custom progressive designs are characterised by their large clear distance, intermediate and reading areas and low rates of change of astigmatism. This provides the patient with excellent clear vision under all viewing conditions. The soft designs provide the patient with excellent comfort and easy adaptation for all corridor lengths and material types. This ensures high levels of customer satisfaction and exceptionally low non-tolerance levels. The corridor lengths are all measured from the fit point to % of addition power, ensuring that even at the minimum fitting height, the patient has a useable reading area. The range of fitting heights and designs allow the patient the choice of a wide variety of frame shapes and sizes.

9 6 7 Custom design characteristics Distance Superior designs with excellent optical properties Wide clear distance, intermediate and reading areas Corridor lengths are measured from fit point to % of addition power Wide range of corridor lengths and designs available Multi-purpose and specific niche designs offered Simple to dispense Fast adaptation High adaptation success rate Superior patient comfort Corridor Start Corridor End Addition Zone Distance Power Addition Power DBL VBOX VBOX FH FH HBOX HBOX IPD IPD The following individual measurements are part of the design calculation: IPD, monocular pupillary distance FH, fitting height HBOX, horizontal lens size (box system) DBL, distance between lenses VBOX, vertical lens size ZTILT, face bow PANTO, pantoscopic tilt BVD, back vertex distance ZTILT BVD PANTO

10 Freeform Lens Design Software The Custom freeform software was created to enable production of finished progressive lenses from semi-finished spheres where the progressive design is machined on the concave side and incorporates the patient s prescription. The software can be used in conjunction with Satisloh s freeform CNC machinery and lab management system to provide the finished lenses for the laboratory s customers. Software integration is a simple process with the assistance of the experienced team of Satisloh and Crossbows. The software has been designed from its inception to be both flexible and easy to use. Software application and integration The Custom freeform software can be integrated as a stand-alone solution in virtually any lab software environment, however both companies have carried out extensive work to ensure that the Crossbows freeform software and the Satisloh lab management system are fully compatible. File outputs are compliant with the latest Vision Council (VC) standards. The software has the ability to be integrated with VC compliant lab management systems. The lab management system (LMS) supplies the job information to the Custom freeform software with a lens design system (LDS) file.

11 8 9 SDF Storage Area Custom Freeform Software LMS Order Entry Rx LDS Laboratory Management System Generators/ Polishers From these details the Custom freeform software calculates the surface data for the progressive design incorporating the patient s prescription and the center and edge thicknesses. The surface data file (SDF) is sent to a storage area which can be accessed by the generating and polishing machines. Credit is managed on a pay per use basis. Each time the freeform software is run the appropriate amount is deducted from the customers credit. The remaining credit is displayed on the program status bar. A warning will appear on the screen when the design fee credit reaches a pre-determined level to remind the user to order. The location of this storage area and the prescription details are sent to the lab management system in an LMS file. When requested, the lab management system sends the data location and any other information required to the relevant machinery, which may include the blocker, generator, polisher, laser engraver etc.

12 Freeform Lens Design Solution The unique partnership of Satisloh and Crossbows provides the customer with a complete freeform solution from one source, where a world class specialist can be directly accessed for each step of the process. Working in total harmony Satisloh and Crossbows guarantee that no production or software issues are left unresolved. As a further benefit, a regular quality monitoring and reporting system is provided to ensure that the freeform lenses produced meet exacting standards of design, power and cosmetics. This helps maintain a stable and accurate manufacturing process, providing the confidence that the freeform lenses supplied to your customers are of a consistently high quality.

13 11 Custom - the perfect freeform solution: Hassle-free software installation Simple software/machine integration User friendly software Stand-alone solution with calculation on-site Support direct from the machinery/software experts Use of any range of semi-finished spherical blanks Excellent range of designs in all popular indices Progressive designs in a wide range of corridor lengths giving superior optical performance and excellent cosmetic appearance A wide selection of lifestyle progressive designs for many applications Freeform aspheric/atoric single vision with outstanding optical performance at all gaze angles Design evaluation and quality reporting Test lenses for evaluation can be sent to Satisloh The test will be carried out on one pair of lenses in each material per month Satisloh will report on: - prescription accuracy of the test lenses - design reproduction - lens cosmetic quality Satisloh will offer recommendations on process changes or alterations as necessary Custom Freeform Packages There are three levels of software packages available: The Silver Package provides a full progressive design range, an office design, a round segment bifocal and a single vision design. The Gold Package adds an enhanced progressive design range plus a wider selection of lifestyle products. The Platinum Package adds our premium designs with the greatest range of software functions. Silver Package Custom 14, 16, 18 Custom Office Custom Blended Bifocal Custom Single Vision Gold Package (includes Silver products) Custom U (13, 14, 1, 16, 17, 18) Custom Junior Custom Relax Custom Driver Platinum Package (includes Gold products) Custom V (13, 14, 1, 16, 17, 18)

14 EyeView Technology Improves lenses for real life viewing EyeView Ophthalmic lenses have oblique power errors which are present when viewing away from the optical center of the lens. EyeView technology uses specially developed software which incorporates the results of raytracing over the entire lens to correct for these errors. Back vertex distance and pantoscopic tilt are used in these complex calculations. More consistent optical performance over the range of prescription powers Wider viewing areas for hyperopes (plus prescriptions) Improved distance area for myopes (minus prescriptions) Improved image quality in principal viewing areas Incorporated in Custom U Custom V Custom Single Vision Cylinder Maps Surface Analysis Raytrace of non-eyeview design Raytrace of EyeView design Optics First Optics First Distributes the mean power smoothly Optics First introduces a new generation of sophisticated lens designs providing exacting standards of vision for the discerning progressive lens wearer. It is a radical approach which reverses the normal design process and has allowed the lens design to be created from the outset with a very smooth mean power profile. Incorporated in Custom V Power Maps Provides premium progressive lens design with superior comfort Allows for natural eye movement Provides sharp viewing in any direction Minimizes blurring or swim effect experienced with traditional progressive designs Results in faster patient adaptation times and greater patient satisfaction without Optics First with Optics First

15 12 13 Prescription Compensation Considers the as worn condition Prescription Compensation Prescription Compensation is an extension of the EyeView principals, were an individual s back vertex distance, pantoscopic tilt and face bow are used to adjust the sphere, cylinder and axis of the prescription to give the best as worn condition possible. This involves using a complex model of how the eye looks through the lens. Incorporated in Custom V Custom Single Vision Back vertex distance Face bow angle Pantoscopic tilt Gaze angle Edge Blending Reduces the edge thickness Edge Blending allows an improvement in the cosmetic appearance of lenses by flattening their outer edges and making them lighter and thinner. Central circular aperture unchanged Edge thickness benefit on minus lenses Center thickness benefit on plus lenses Limited by generator cutter radius on plus lenses Variable aperture diameter Two levels of blending: Level 1 - Moderate, Level 2 - High Applicable to all Custom Lens Designs Sag Height (mm) Original Level 1 Level 2 Front Aperture without Edge Blending Radius (mm) Front Curve Base 4, Sphere Power -4, Index Edge Thickness (mm) Original Level Level with Edge Blending

16 The Designs Custom Progressive The extensive range of the Custom Progressive designs will accommodate most frame shapes and sizes with fitting heights from 14mm and upwards. They offer the patient outstanding optical performance, comfort and choice. Custom 14/16/18: Good standard progressive range Custom U: Gives greater comfort, faster adaptation and sharper all over vision All Custom Progressive designs have low levels of astigmatism with wide usable distance, intermediate and reading areas. All are available in a wide selection of material types and indices. Custom V: A premium product with unparalleled levels of smoothness for the most discerning patient

17 14 1 Custom 14/16/18 14/16/18mm corridor lengths to full addition power Minimum fitting heights of 1/18/2mm Low distortion soft aspheric design Individual designs for left and right eyes Variable design decentration Power Range +6. dpt to -. dpt, up to -4. dpt cylinder (depending on range of semi-finished spheres) Addition.7 to 3. in steps of.2 dpt Index 1.498, 1.3, 1.6, 1.86, 1.6, 1.67 and 1.74 The Custom 14 progressive is designed specifically for frames with small lens height (B size). This is achieved in a soft design without compromising the distance, corridor and reading areas. Custom 16 successfully combines a soft design with wide distance, intermediate and reading areas. This design also benefits from having low rates of change of mean power and maintains good dynamic vision throughout. The Custom 18 design with its low rates of change and levels of astigmatism provides good dynamic vision combined with generous intermediate and reading areas. Maximum astigmatism is located on the nasal side where most of it will be edged away. Dimensions Power Maps Cylinder Maps Custom mm mm Custom 16 Addition Inset mm mm 14mm Custom 18 Addition Inset mm mm 16mm Addition Inset mm

18 Custom U EyeView Dimensions Corridor length varies from 13mm to 18mm Minimum fitting height of 14mm Incorporates EyeView technology Automatic corridor length selection based on frame shape and patients fitting details Low distortion soft aspheric design Individual designs for left and right eyes Variable design decentration Addition Inset 2.mm 4mm 9-14mm Power Maps mm 14mm 1mm Cylinder Maps

19 16 17 Power Range +6. dpt to -. dpt, up to -4. dpt cylinder (depending on range of semi-finished spheres) Addition.7 to 3. in steps of.2 dpt Index 1.498, 1.3, 1.6, 1.86, 1.6, 1.67 and 1.74 Custom U is designed to make use of EyeView technology, which gives the lenses more consistent optical performance regardless of the prescription power. This design is also equipped with automatic corridor selection which ensures the best lens is chosen for a particular patient s fitting details and frame choice. Power Maps mm 17mm 18mm Cylinder Maps

20 Custom V EyeView Optics First Prescription Compensation Dimensions Corridor length varies from 13mm to 18mm Minimum fitting height of 14mm Incorporates Optics First Prescription compensation for as worn condition Variable inset Incorporates EyeView technology Automatic corridor length selection based on frame shape and patients fitting details Low distortion soft aspheric design Individual designs for left and right eyes Variable design decentration Addition Inset 2.mm 4mm 9-14mm Power Maps mm 14mm 1mm Cylinder Maps

21 18 19 Power Range +6. dpt to -. dpt, up to -4. dpt cylinder (depending on range of semi-finished spheres) Addition.7 to 3. in steps of.2 dpt Index 1.498, 1.3, 1.6, 1.86, 1.6, 1.67 and 1.74 Custom V has been designed using Crossbows latest Optics First design system. This radical approach reverses the normal design process and has allowed Custom V to be designed from the outset with a very smooth mean power profile, thus minimizing swim effects and providing excellent patient comfort and rapid adaptation. Power Maps mm 17mm 18mm Cylinder Maps

22 The Designs Custom Lifestyle The Custom Lifestyle range covers progressive lenses which have been designed with specific needs in mind. They do not have the all-round capabilities of a normal progressive lens, but do excel in carefully selected areas. Whether you require a lens for playing music, computer use, driving, cooking or reading, there is a Custom Lifestyle product for you. In addition to normal progressive lens wearers, there are also designs that are suitable for: alleviating eye strain associated with near and intermediate work for the non-presbyope controlling the advance of myopia in young people

23 2 21 Custom Office A superior design of office progressive lens Low distortion soft aspheric design Individual designs for left and right eyes Variable design decentration Eight dynamic powers available The wide range of dynamic powers allows the ideal choice to be made for all reading additions up to 3. dpt and also allows the user to benefit from fully corrected reading and intermediate vision. The distance vision will be restricted but will be more than adequate for use in an office environment. The design may help to reduce eye and neck strain associated with long term use of computers. The Custom Office freeform lens is designed primarily for use in an office-type environment, however it also functions well for any task where intermediate and reading vision is of paramount importance. It is not a traditional progressive design, but rather is an alternative to a reading lens, providing clear vision for reading and intermediate viewing. The main differences between a reading progressive and office design are as follows: a reading lens allows a presbyope to have clear near vision, but renders anything beyond this distance out of focus. A progressive lens allows clear distance and near vision connected by a corridor of intermediate vision. An office lens has a reduced width of distance area and normally has a smaller change in power than a conventional progressive which results in a much wider central field and a reading area with very low distortion. Astigmatism in a progressive lens Astigmatism in an office lens Notes: Dynamic power is the total reduction in power from reading to distance area Lens is verified in reading reference circle only Dynamic power is selected from patient s addition Lens is fitted using patient s distance PD (pupillary distance) Power Range +6. dpt to -. dpt, up to -4. dpt cylinder (depending on range of semi-finished spheres) Dynamic Power -.7 to -2. in steps of.2 dpt Index 1.498, 1.3, 1.6, 1.86, 1.6, 1.67 and 1.74 Dimensions Power Map Cylinder Map Fit Point mm Reading Inset 2.4mm

24 Custom Junior 13mm corridor lenght to full addition power Minimum fitting height of 14mm Low distortion soft aspheric design Individual designs for left and right eyes Variable design decentration The Custom Junior progressive is designed specifically to help reduce the onset of myopia in young people between the ages of 8 and 16 years. The design offers a large stable reading area combined with excellent peripheral clarity in the distance zone. Power Range +6. dpt to -. dpt, up to -4. dpt cylinder (depending on range of semi-finished spheres) Addition. to 2. in steps of.2 dpt Index 1.498, 1.3, 1.6, 1.86, 1.6, 1.67 and 1.74 Custom Relax 14mm corridor length to full addition power Minimum fitting height of 1mm Very soft design with very low distortion Distortion free distance area and corridor Individual designs for left and right eyes Variable design decentration The Custom Relax design is a progressive design for people who are not presbyopic. It helps to avoid the patients eyes becoming tired and strained if they spend a large portion of the day focusing at the same distance, e.g. using a computer or reading. It is available in two forms; Custom Relax I has an addition of.66 dpt, Custom Relax II has an addition of 1. dpt. Power Range +6. dpt to -. dpt, up to -4. dpt cylinder (depending on range of semi-finished spheres) Addition Custom Relax I:.66 dpt Custom Relax II: 1. dpt Index 1.498, 1.3, 1.6, 1.86, 1.6, 1.67 and 1.74 Custom Driver Corridor length 2mm Minimum fitting height of 21mm Low distortion soft aspheric design Individual designs for left and right eyes Variable design decentration Wide clear distance area Wide clear corridor Low unwanted astigmatism Power Range +6. dpt to -. dpt, up to -4. dpt cylinder (depending on range of semi-finished spheres) Addition.7 to 3. in steps of.2 dpt Index 1.498, 1.3, 1.6, 1.86, 1.6, 1.67 and 1.74 The Custom Driver has been designed with the specific vision requirements of driving in mind. Clear distance vision is the absolute priority with improved middle distance vision compared to other progressive designs for reading the dashboard, using satellite navigation and seeing in mirrors.

25 Dimensions Power Map Cylinder Map Addition Inset 2.2mm 4mm 9mm Dimensions Addition Inset 2.mm 2mm 12mm Power Map Cylinder Map Dimensions Addition Inset 2.mm 2mm 18mm Power Map Cylinder Map

26 The Design Custom Blended Bifocal The Custom Blended Bifocal design is a bifocal but without the obvious line around the reading segment. The power changes from the distance prescription to the reading prescription over a small region which makes the bifocal segment almost invisible. This results in exceptionally wide and large distance and reading areas compared to progressive lenses. Standard Bifocal Lens Custom Blended Bifocal Lens

27 24 2 Custom Blended Bifocal Exceptionally wide clear distance area Exceptionally wide clear reading area Choice of segment diameter Choice of segment position Choice of blended region width Prescription is incorporated into bifocal surface Available in all Custom Freeform Software packages: Silver, Gold and Platinum Power Range +6. dpt to -. dpt, up to -4. dpt cylinder (depending on range of semi-finished spheres) Addition.7 to 3. in steps of.2 dpt Index 1.498, 1.3, 1.6, 1.86, 1.6, 1.67 and 1.74 Available in all Custom Freeform Software packages: Silver, Gold and Platinum Dimensions Power Map Cylinder Map Blended region width Segment diameter Segment vertical position Inset

28 EyeView Prescription Compensation The Designs Custom Single Vision For the non-presbyope there is an excellent freeform single vision range with sharp vision at all viewing angles. This range is available in a wide selection of material types and indices. There are also benefits to be gained both in terms of thickness and cosmetic appearance as flatter base curves can be used without sacrificing optical performance. Custom Single Vision lenses minimise unwanted astigmatism associated with conventional single vision lenses. Using EyeView technology combined with Prescription Compensation results in a lens with superior optical performance, not only on the horizontal and vertical axes, but over the entire lens surface.

29 26 27 Standard Single Vision This analysis shows the unwanted astigmatism of two different single vision lenses, one spherical and one toric over a range of gaze angles. Once the eye moves away from the central viewing position and looks obliquely through the lens, unwanted astigmatism is present. Custom Single Vision When the same analysis is done on Custom Single Vision lenses, nearly all of the unwanted astigmatism that was in the standard single vision lenses is no longer present. This reduction in aberration is achieved not only on the horizontal and vertical axes but over the entire lens surface. The differences are particularly marked towards the periphery of the lens compared with the conventional single vision lenses. spherical toric spherical toric 3 3 Key dpt dpt. -.6 dpt.4 -. dpt dpt dpt dpt dpt lens lens +4. lens lens Power Range Typical power range: +8. dpt to -. dpt, up to -4. dpt cylinder (depending on range of semi-finished spheres) Index 1.498, 1.3, 1.6, 1.86, 1.6, 1.67 and 1.74 Single Vision Aspheric Custom Single Vision

30 Freeform Lens Design Technical Information Software installed on freeform customer s computer Software runs on local standard PC with Windows XP Service Pack 2 or newer Software provided complete with USB license key Order entry using a number of lab management systems including Satisloh s AF-Client or manually Maintenance and updates provided via electronic transfer Pre paid design fees are transferred electronically Low limit credit warning

31 28 29 Range at a glance Silver Package Gold Package Platinum Package Custom 14, 16, 18 Good standard progressive range where the optician chooses the corridor length. Custom Office For office use, computer use, or any application or occupation that involves a significant amount of close up and intermediate work, for example, musicians or mechanics. Custom Blended Bifocal Bifocal with almost invisible bifocal segment with wide and large distance and reading areas. Custom Single Vision Provides very clear and sharp all over vision customized for the patient. Custom U (13, 14, 1, 16, 17, 18) For the more discerning patient. EyeView technology provides greater comfort, faster adaptation and sharper all over vision. Automatically chooses the most suitable corridor length. Custom Junior Helps reduce the onset of myopia in children. Custom Relax Reduces visual fatigue for non presbyopes who make significant use of their near vision. Custom Driver With the emphasis on distance and intermediate viewing this is the ideal design for driving. Custom V (13, 14, 1, 16, 17, 18) For the most discerning patient: premium product provides the ultimate in comfort shortest adaptation times minimizes swim effects has the sharpest all over vision automatically chooses the most suitable corridor length

32 Parameters at a glance Custom 14, 16, 18 Custom U Custom V Custom Lifestyle Custom Blended Bifocal Prescription data Frame box data Frame trace Distance between lens Monocular PD Fitting Height Pantoscopic tilt standard Pantoscopic tilt individual Face bow angle individual Back vertex distance standard Back vertex distance individual Custom Single Vision Features at a glance Custom 14, 16, 18 Custom U Custom V Custom Lifestyle Custom Blended Bifocal Variable design decentration Prescription prism by blocking Prescription prism by machining Prescription prism by combination of blocking/machining Thickness control for rimless frames Circular or elliptical crib shapes Edge blending Plate height reduction EyeView technology Prescription compensation Manual variable inset Automatic variable inset Optics First technology Custom Single Vision

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36 Contact Satisloh AG Neuhofstrasse 12 CH Baar Switzerland Phone: +41 () Fax: +41 () Mail: info@satisloh.com Crossbows Optical Ltd. Unit 1, Halfpenny Valley Ind Est Portadown Road Lurgan Co Armagh BT66 8TP N Ireland Phone: +44 () Mail: general@crossbowsoptical.com Satisloh / KH / February 213 Subject to technical changes