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Progressive Lenses
Chemi-Pro
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HASSLE-FREE PROGRESSIVE: CHEMI-PRO
CHEMI-PRO Regular Corridor 13~16mm in 1.50, 1.56, 1.60 and 1.67 indexes
The lens surface was made aspherically in all directions of vision with a low base curve that makes the lens thin while preventing eye fatigue when worn, with low shaking and distortion.
Chemi-Pro is aspherically designed in order to pursue high optical functionality. Chemi-Pro is a new concept retina evaluation design adopting the PSI (Power Spline Integral) computer design program that takes wear-ability into high consideration; this allows for wider frontal vision as the field of vision is not damaged.
| Transmissivity |
1.67 (RX) |
1.60 (RX) |
1.56 (RX) |
1.50 (RX) |
| Special Design |
Retina evaluation design using PSI (Power Spline Integral) computer design program |
| Progressive Corridor |
14mm |
16mm |
13mm/16mm |
14mm/16mm |
| UV Protection |
Blockage of 400nm |
Blockage of 400nm |
Blockage of 400nm |
Blockage of 400nm |
Existing progressive addition lens vs. Chemi-Pro designed lens
Shaking, distortion, haziness, etc. in the retina
Evaluating only the properties of sunlight on progressive surfaces for thin lens designed with a low base curve without taking into consideration the nature of sunlight on the retina, excess and deficiencies as well as aberrations occur in the prescription when lenses are actually worn.
Optimal image formation in the retina
Designed with the entire lens surface divided into some 5,000 sections, each ray of sunlight passing through the lens forms images optimally.
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