AsforMax SV
Aspheric design for a slimmer lens form
Explore design and specificationsAspheric single-vision design considering surface geometry and thickness. Final thickness depends on prescription, material and frame dimensions.
Application and design rationale
Aspheric surface, a different form
An aspheric surface with varying curvature differs from a simple spherical surface. AsforMax focuses on surface form and thickness; reduction cannot be determined without prescription and frame dimensions.
| Design identifier | Description |
|---|---|
| Design type | Standard Aspheric / Freeform Single Vision |
Technical specifications
Orderable options depend on prescription, material and current product availability.
| Technical parameter | Value / status |
|---|---|
| Product classMarket Segment | High-end single vision |
| Available materialsAllowed Materials | All materials |
| Pre-calibrationPrecalibration | Yes |
| PersonalisationPersonalization | Yes |
| Prism reference pointPrism Reference Point (PRP) | Geometrical centre |
| TechnologyTechnology | Standard Aspheric |
| Design Parameters | Frame and fitting parameters; explained in the measurement section |
| PRP decentration range | 0 to 15 mm |
| Specified indices and options | Refractive indices 1.50, 1.53, 1.60, 1.67 and 1.74 In clear, photochromic and polarised options; confirm final availability when ordering. |
Design mechanism and features
Aspheric geometry and lens appearance
AsforMax SV uses standard aspheric geometry in freeform production. Varying curvature profiles manage peripheral errors and optimise lens depth/thickness; reduction depends on prescription, material and frame.
Difference from FlexMax SV
AsforMax SV's document lists Standard Aspheric, without a DuraTrace symbol. It focuses on aspheric geometry; do not attribute FlexMax or UltraMax's full technology set to it.
Technologies in this design
The document identifies Standard Aspheric technology for this model.
Measure before manufacture
Required parameters vary by design and must be recorded by a professional.
- Monocular PD
- Each eye's pupillary distance is recorded separately to align horizontal lens positioning with the visual axis.
- Fitting Height
- Fitting height is recorded on the adjusted frame in the natural position of wear; the required near zone must also fit within the frame.
- BVD
- Distance from the rear lens surface to the corneal apex; relevant to power-compensation calculations in personalised models.
- Pantoscopic Angle
- The frame's vertical tilt in the position of wear must be measured; example values are not substitutes for measurement.
- Wrap Angle
- The horizontal curvature of the frame relative to the face, describing lens positioning.
- Box A
- Horizontal width of the frame opening in the boxing system.
- Box B
- Vertical height of the frame opening in the boxing system.
- DBL
- Distance between the two lens boxes at the frame bridge.
- ED
- Effective diameter: twice the greatest distance from the boxing centre to the lens-shape edge, used for blank selection and edging calculations.
Monocular pupillary distance
For aligning the lens centre with each eye's visual axis.
Fitting height
Vertical pupil position relative to the frame in the position of wear.
Back vertex distance
One of the inputs describing the actual position of wear.
These are basic fitting parameters; additional inputs and the level of personalisation are specified for each model.
Complete parameter guide ↖View the original catalogue page
In this family
UltraMax SV
Single vision personalised to viewing behaviour
Specifications and details
