Pursuit PV - See the world as it really is -

New challenges in SEIKO progressive lenses

A 'natural comfort of vision' is demanded by customers' in their progressive lenses.
SEIKO has delivered a great many innovative lenses in order to achieve an extensive field of vision with little sway or distortion.
We have successfully compensated for distortions of objects and their size when looking through lenses with our breakthrough new technology 'Cross Surface Design® (Double-sided Control Design).'

In order to deliver even more natural and comfortable vision to all our customers, we will continue to evolve SEIKO progressive lenses in the future.

Pursuit PV basic design<Cross surface Design® (Double-sided Control Design)>

Natural vision with little sensation of swaying or distortion

  • Previous front surface progressive lens
  • Cross Surface Design® (Double-sided Control Design)

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

Expansive, bright, clear field of vision

  • Previous front surface progressive lens
  • Cross Surface Design® Double-sided Control Design)

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

Pursuit PV features

<Cross Surface Design® (Double-sided Control Design)>
An even more natural appearance that is closer to how things look through the naked eye

Improvement to deviations in the actual size of objects when looked at up-close through lenses

Lenses for people with myopia increase the near magnification and lenses for people with hyperopia suppress the near magnification. This means that the appearance of objects is even more natural and closer to that of when seen by the naked eye.

Improvement to deviations in the actual shape of objects when looked at up-close through lenses

Distortions in objects (difference in the aspect ratio) are compensated for when looking at objects through lenses.

The aspect ratio of length and width is the ratio when looking at regular square objects with the near portion of progressive lenses. The closer the number is to '1,' the more the object resembles the real thing.

Reduction in sway and distortion

It is possible to make it less likely to feel sway even when moving your face from left to right by reducing distortion.

↑Introduction of Cross Surface Design®

World’s first, Magnification control

This is a new technology that reduces deviations in the actual size and shape of objects as well as improving vision by controlling the near curve on the front surface of the lens.

Near magnification is increased, objects are closer to their original size and at the same time the aspect ratio is improved by deepening the front surface of the near curve.

By making the front surface near curve shallower than the distance curve, the variation between distance and near magnification is further decreased than the back surface progressive and at the same time, the aspect ratio is improved so reducing sway and distortion.

World’s first, Horizontal Atoric®

This is a new technology that deepens the horizontal curve against the curve in the front surface vertical curve, and so reduces sways and distortions. In the periphery, the curve gradually eases up and the increase in the thickness of the lens is suppressed.

By deepening the curve of the horizontal curve further than the vertical curve, sway and distortion have been reduced, and the aspect ratio has also been improved.

<Variable aberration balance by power>
A balance in performance that meets the differing demands of lenses for people with myopia and hyperopia

In lenses for people with myopia, the field of clear vision is widened and in lenses for people with hyperopia, sway and distortion is reduced.

People with hyperopia:
Emphasis on the reduction of sway and distortion
Comparison image
People with weak power lenses:
Emphasis on balance
Comparison image
People with myopia:
Emphasis on the size of the field of clear vision
Comparison image
  • Pursuit PV
  • Previous back surface progressive lens

<Advanced aspheric design>
An 80% wider field of vision for people with astigmatism when looking in the distance

Advanced aspheric design

Comparison image

Compared to previous lenses, the aberration balance is adjusted and the long-distance field of vision significantly expanded in line with "Listing's Law" that determines the orientation of the eyeball when the field of vision shifts in various directions.

<Non-linear Progressive Power Change (smoothing design)>
The field of vision in the distance is wider and clearer

Non-linear Progressive Power Change (smoothing design)

Comparison image

Smoothing the power variations from the long-distance zone to the intermediate zone, the width of clear vision around the fitting point(※1) has been increased by approximately 60%(※2) compared to previous lenses.
The field of vision in the distance has been widened and a clear front view has been achieved.

  • ※1: Point to be matched with the center of the pupil
  • ※2: Comparison with previous back surface progressive lens (S0.00 ADD2.00)

<Aspheric Adjustments according to Dioptric Power>
for comfortable vision for any power

Previous lens

Previous lens

With ordinary progressive lenses, a common semi-finished blank(※) is used at each base curve division, resulting in differences in optical performance.

Semi-finished lens material with shaping on one side completed, leaving the other side to be processed when an order is placed.

Aspheric Adjustments according to Dioptric Power

Aspheric Adjustments according to Dioptric Power

Pursuit PV provides a wider field of vision and comfortable fit to customers needing all kinds of power with no difference in optical performance caused by power.

<Curve Pairing system>
Beautiful appearance and superior optical performance with a pair lens

Curve Pairing system

The curve of the lens used changes depending on the power of the lenses.
If there is a big power difference between the left and right lenses, a variation may occur with the base curve and this may cause a feeling of discomfort in appearance.
In cases where there is a significant difference between the base curves, the curves of Pursuit PV are automatically matched to adjust the appearance at the same time as realizing outstanding optical performance.

When curves are matched

Lens appearance

Beautiful fit in small frames

  • Previous lens
  • Pursuit PV

The photograph is an image that shows features.

Pursuit PV features short corridors of 10mm, 12mm and 14mm, and this means that 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-6.00. SEIKO's previous lens used 1.50 monomer.

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. Pursuit PV 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. In addition, back surface aspheric design is used to achieve a thin lens. The synergy between material and design enables a lens that is thinner and lighter than previous lenses.

Taking progressive lenses to new territory never before experienced through 3D Spectacle Virtual-reality System …

3D Spectacle Virtual-reality System

The Pursuit PV lens performance has been evaluated using the world's first "3D Spectacle Virtual-reality System" developed by SEIKO. This brand new spectacle lens use simulator that uses computer graphics technology enables spectacle real-time evaluation of 3D images close to actual usage scenarios to provide feedback to the lens design that can be used to achieve optimization of performance balance.

Adopted technologies

  • Cross surface design®
  • 3D Spectacle Virtual-reality System
  • Super Clean Coat BR
  • Super Clean 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
Pursuit PV 1.74 ★★★★★ 標準 標準 標準 OP OP OP OP OP
Pursuit PV 1.67 ★★★★ 標準 標準 標準 OP OP OP OP OP
Pursuit PV 1.60 ★★★ 標準 標準 標準 OP OP OP OP OP

S:Standard specifications OP:Option

Specifications

Product Name Refractive Index Specific Gravity Abbe Value Progressive Power Corridor (mm) Quality Assurance Mark
Pursuit PV 1.74 1.74 1.47 33 10 12 14
Pursuit PV 1.67 1.67 1.36 32 10 12 14
Pursuit PV 1.60 1.60 1.30 42 10 12 14