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Plastic lenses CR-39 hard varnish coated, index 1.499 = price per pair!!

CR-39 hard cover
NO BRAND
0 (ratings 0)
Цена ¥ 6.70 ¥ 6.60 ¥ 6.40
Количество 1-19 пар 20-59 пар 60-1000 пар
Model Article Диоптрия Цвет оправы Price Availability Quantity, пар
Plastic lenses CR-39 hard varnish coated, index 1.499 = price per pair!! CR-39 hard cover +0.5 Ø 70 mm ¥ 6.80 В наличии
Plastic lenses CR-39 hard varnish coated, index 1.499 = price per pair!! CR-39 hard cover +0.75 Ø 70 mm ¥ 6.80 В наличии
Plastic lenses CR-39 hard varnish coated, index 1.499 = price per pair!! CR-39 hard cover +1.0 Ø 70 mm ¥ 6.80 В наличии
Plastic lenses CR-39 hard varnish coated, index 1.499 = price per pair!! CR-39 hard cover +1.25 Ø 70 mm ¥ 6.80 В наличии
Plastic lenses CR-39 hard varnish coated, index 1.499 = price per pair!! CR-39 hard cover +1.5 Ø 70 mm ¥ 6.80 В наличии
Plastic lenses CR-39 hard varnish coated, index 1.499 = price per pair!! CR-39 hard cover +1.75 Ø 70 mm ¥ 6.80 В наличии
Plastic lenses CR-39 hard varnish coated, index 1.499 = price per pair!! CR-39 hard cover +2.0 Ø 70 mm ¥ 6.80 В наличии
Plastic lenses CR-39 hard varnish coated, index 1.499 = price per pair!! CR-39 hard cover +2.25 Ø 70 mm ¥ 6.80 В наличии
Plastic lenses CR-39 hard varnish coated, index 1.499 = price per pair!! CR-39 hard cover +2.5 Ø 70 mm ¥ 6.80 В наличии
Plastic lenses CR-39 hard varnish coated, index 1.499 = price per pair!! CR-39 hard cover +2.75 Ø 70 mm ¥ 6.80 В наличии
Plastic lenses CR-39 hard varnish coated, index 1.499 = price per pair!! CR-39 hard cover +3.0 Ø 70 mm ¥ 6.80 В наличии

= price per pair!!

Organic lens, CR-39 polymer monofocal lens spherical design made from CR-39 coated with a hard cover (hard lacquer, scratch resistant) colorless.

Abbe number is 58. Recommended for correction of hyperopia and myopia. Index - 1.499.

Description

Advantages of plastic lenses are the ease and strength - they are not fighting.

Advantages:

  • ease
  • The specific weight of the optical glass, plastic, halved, and therefore your glasses with plastic lenses will be much easier.
  • traumatic
  • The risk of hurting your eyes with shards of broken lenses much smaller if these lenses plastic. And because plastic is resistant to splitting, and because the pieces are not as traumatic.
  • cosmetic coloring
  • Plastic, unlike glass, provides manufacturers of lenses and opticians complete freedom in the colour cosmetic lenses complex combinations of shades, with a few color transitions.

When choosing glasses for children and people leading an active way of life, preferences are on the side plastic.

CR-39

Today, this material is the most common in the world for the production of spectacle lenses, but gradually replacing more with high refraction and light materials. Of all the organic optical materials for spectacle lenses, it has the lowest refractive index, which has become a reference point for comparison with more new content.

CR-39 is sufficiently resistant to abrasive wear, can be dyed in organic dyes solutions. Lenses of this material are recommended for low to moderate ametropia, as well as for dyeing. Lenses of this material is two times lighter than lenses of mineral glass, in addition, they are more resistant to impact. However, lenses made from CR-39 are thicker and heavier than lenses made of modern materials with high refraction, but they are the cheapest organic lenses.

 

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