SPG AZ, SSV AZ, SLU AZ - A series with lenses for myopia, hyperopia and astigmatism -

The core series of lenses for myopia, hyperopia and astigmatism.
SEIKO developed the world's first Double-aspheric lens to minimize distortions and improve peripheral vision right up to the edge of the lens. Improving wearer vision and comfort also resulted in thinner and flatter lenses.

Image of lens usage

Natural vision with minimal blurring

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  • A to Z Series

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

Clear vision even for people suffering from astigmatism

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  • A to Z Series

This image shows a simulated view through a plus lens.

Related details

Lens appearance

Emphasizes the beauty of the eyes

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  • A to Z Series

The photograph is an image that shows features.

Use of the double-sided aspheric design reduces changes in the face line caused by some spectacles to give a natural, beautiful impression.

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 monomer.

The two properties of the double-sided aspheric curve design that features aspheric surfaces on both the front and back surfaces plus the high refractive-index monomer, have made it possible to produce an extremely thin lens. 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. SEIKO has succeeded in achieving a lens 50% thinner than that of ordinary plastic lenses with its SPG-AZ, a lens that uses a material with a high refractive index of 1.74. SEIKO can offer the thinner lens that wearers have ever experienced in their life. Being thin also means being lightweight. This lens is 40% lighter than ordinary plastic lenses, solving problems such as spectacles sliding down the nose or traces left by nose pads on the sides of the nose.

Adopted technologies

  • Double-sided 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 coating Reducing blue light Blocking UV rays reflected from the back Fogging Resistance
SPG AZ ★★★★★ 標準 標準 標準 OP OP OP OP OP
SSV AZ ★★★★ 標準 標準 標準 OP OP OP OP OP
SLU AZ ★★★ 標準 標準 標準 OP OP OP OP OP

S:Standard specifications OP:Option


Product Name Refractive Index Specific Gravity Abbe Value Quality Assurance Mark
SPG AZ 1.74 1.47 33
SSV AZ 1.67 1.36 32
SLU AZ 1.60 1.30 42