Superior P1 - Stick to “1 degree” and “1mm” -

Unstinting care taken to the “1 degree,” “1mm” level

Unstinting care taken to the “1 degree,” “1mm” level

Up to now, it has not been possible to fully accommodate elements such as differences in "the position and height of the nose and ears" and the "frame tilt angle" even with tailor-made lenses.

SEIKO has solved the issue of pantoscopic tilt in our Superior P1 lenses. We adjust the lenses to the pantoscopic tilt of the customer and so it has become possible to perform optimal aspheric correction from 0 to 20 degrees in 1 degree increments over 21 options.
In addition, <9 types> of "progressive corridor length" are now available in 1 mm steps within a range of 10 - 18 mm, <51 types> of "inset of the near zone" in 0.1 mm steps within a range of 0 - 5 mm, and, with the addition of <3 types> of basic design, it is now possible to create an almost infinite number of designs incorporating the customer's unique data.

SEIKO's Superior P1 is a truly "ultra-personalized lens" that makes it possible to provide customers with a single optimum tailor-made lens selected from this almost infinite variety of possibilities.

Superior P1 basic design<Back-surface progressive + Back-surface Aspheric Design>

Natural vision with little sensation of swaying or distortion

  • Previous front surface progressive lens
  • Back-surface progressive + Back-surface Aspheric design lens

The photograph is an image that shows differences in fields of vision

Expansive, bright, clear field of vision

  • Previous front surface progressive lens
  • Back-surface progressive + Back-surface Aspheric design lens

The photograph is an image that shows differences in fields of vision

Superior P1 ultra-personalized design <α×β×γ×δ×customer's unique data = Almost infinite number of designs>

α. 3 basic designs available "compatible with the customers lifestyle"

3 general-purpose types of design are available for selection to match the customer's lifestyle and purpose of usage.

3 basic designs

β. We perform optimal aspheric correction in 21 options that matches the pantoscopic tilt of the customer.

The term "pantoscopic tilt " refers to the degree of tilt when spectacle frames are worn. This pantoscopic tilt angle differs depending on the position of the nose or ears and the angle unique to the spectacle frames themselves. Superior P1 enables optimum aspheric adjustments to the customer's forward tilt angle in steps of 1 degree within a range of 0 - 20 degrees.
This makes it possible to provide customers with ideal comfort of vision when wearing spectacles.

Example

γ. 9 options for the corridor length

Image

9 options for the corridor length are available for selection to match the "progressive lens currently used," "lifestyle" and "frame size."

The availability of 9 options for the corridor length means that customers can select lenses that suit their visual lifestyle.

δ. 51 options for "near zone inset" available in 0.1 mm steps

Image

As lifestyles have become increasingly diversified, so individual differences in close-work distance have increased. In addition, the horizontal direction prism effect changes with near sight power and this also results in variations in the near zone inset.
Superior P1 enables setting of the near zone inset in 0.1 mm gradations within a range of 0.0 - 5.0 mm, making it possible to achieve the optimum inset of the near zone for each individual customer and to make full use of the near distance segment
Note that the left and right inset of the near zone may be set individually.

When looking at an object approaching from the distance without moving the head, the eyes converge, with the result that the line of vision through a point on the lens shifts. To allow for this, the near distance area is positioned towards the nasal area, not directly below the distance vision area: This is referred to as "inset" and the quantity of this shift as "inset value."
The far distance PD, close work distance and near sight power differ for each individual.

Lens appearance

Beautiful fit in small frames

  • Previous lens
  • Superior P1

The photograph is an image that shows features.

Superior P1 is an "ultra-personalized lens" that features 3 options for the basic design, 9 options for the corridor length (10 mm - 18 mm), 51 options for the near zone insert and 21 options for the frame tilt.
Fine settings can be made to match the customer's lifestyle, circumstances of usage and frame shapes. Selection can be made from an extremely short procorridor of 10 mm.
For this reason, the lens can be neatly accommodated in shallow frames, an achievement difficult to realize with previous progressive lenses.

Thin, lightweight and comfortable to wear

  • Previous lens
  • 1.60 lens
  • 1.67 lens
  • 1.74 lens

This is an image of S-6.00D. SEIKO's previous lens used 1.50 material.

The numerical value that indicates the ability of the lens material to refract light is called the "refractive index" and the higher this index, the thinner the lens. The Superior P1 Series features a lineup of 3 types of material: Ultra-high 1.74 refractive index material, high index 1.67 material and 1.60 index material.
The 1.74 material in particular offers the wearer the chance to experience the comfort of the world's thinnest plastic lens.
In addition, the back surface aspheric design featuring an aspheric surface on the front side of the lens also contributes to achieving a thin lens.
This contributes to both thinness and lightness.
The Superior P1 Series offers solutions to problems such as spectacle weight, spectacles sliding down the nose and after traces of nose pads.

Adopted technologies

  • Back-surface progressive + Back-surface Aspheric design
  • Transitions(S)
  • Super Resistant Coat BR
  • Super Resistant Coat
  • Super Durable Coat
  • Super Clean Coat BR
  • UV Protect Plus

Thinness / coating

Product Name Thinness UV Cut off Reflection Resistance Contamination Resistance Scratch Resistance Anti-static Resistance Reducing blue light Blocking UV rays reflected from the back Fogging Resistance
Superior P1 1.74 ★★★★★ 標準 標準 標準 標準 標準 OP OP OP
Superior P1 1.67 ★★★★ 標準 標準 標準 標準 標準 OP OP OP
Superior P1 1.60 ★★★ 標準 標準 標準 標準 標準 OP OP OP

S:Standard specifications OP:Option

Specifications

Product Name Refractive Index Specific Gravity Abbe Value Progressive Power Corridor (mm) Quality Assurance Mark
Superior P1 1.74 1.74 1.47 33 10 11 12 13 14 15 16 17 18
Superior P1 1.67 1.67 1.36 32 10 11 12 13 14 15 16 17 18
Superior P1 1.60 1.60 1.30 42 10 11 12 13 14 15 16 17 18