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Single Vision Lenses
CR-39 1.50 |
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CR-39 Spherical
Raw Material:CR-39 |
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| Refractive Index |
1.49 |
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| Specific Gravity |
1.32 |
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| Abbe value |
58 |
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| Diameter |
75/70/65mm |
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| Coating |
Green HMC |
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This is the mother of all plastic lenses; it has a high Abbe number making it one of the most optically safest lenses with low light dispersion.
· Optically safe with a high Abbe number,
providing a clearer field of vision
· Safe from diffused reflection with over
98% transmissivity
· Completely blocks UV rays under 360nm |
CR-39 Aspherical
Raw Material:CR-39 |
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| Refractive Index |
1.50 |
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| Specific Gravity |
1.32 |
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| Abbe value |
58 |
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| Diameter |
75/70mm |
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The aspherical lens solves drawback of distortions in spherical lenses for greater clarity (Asperical design) with the highest Abbe value among all plastic lenses.
· Offers a more comfortable and clearer
field of vision
· Completely blocks UV rays under 360nm |
What is an aspherical design?
An aspherical design involves making one or both surface(s) an aspherical lens in order to solve the problem of astigmatism in spherical lenses.
Comparison of distortion in Spherical Lens VS. Aspherical Lens
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Spherical Lens |
Asperical Lens |
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