SF 1.499,1.56,1.591PC,1.61,1.67,1.74 Photo Grey, Brown Lens Single Vision Custom
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Semi Finished Lens & Blank

SF 1.499,1.56,1.591PC,1.61,1.67,1.74 Photo Grey, Brown Lens Single Vision

This photochromic single vision lens features light-sensitive technology that automatically adjusts the lens color between grey and brown based on ambient light, providing transparency indoors and shading outdoors. HMC (Multi-layer Anti-Reflective) and SHMC (Super Hydrophobic Anti-Reflective) coatings enhance scratch resistance and ease of cleaning while maintaining high light transmittance. Available in refractive indices of 1.499/1.56/1.61/1.67/1.74, it accommodates a variety of prescriptions. The semi-finished design allows flexible optical processing for various frame styles. Beyond vision correction, this lens intelligently adapts to environmental lighting, delivering good visual comfort for outdoor activities, driving, and everyday life.

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  • Parameter
Parameter
(1.56 S/F Photochromic Single Vision Lens)

Material refractive index =1.553
 
Tooline index =1.530
Diameter Nominal curve T.C. (Actual curve) Rad (Base Curve Radius) Back Curve E.T. (Edge Thickness) C.T. (Center Thickness) Sag (Φ50) Rx Range Recommended
70mm 0 0.04711 11250.2 6 14.7 7.5 0.03 -8.25D / -12.00D
70mm 50 0.55342 957.68 6 14.1 7.5 0.33 -6.25D / -8.00D
70mm 100 1.05904 500.45 6 13.5 7.5 0.62 -5.25D / -6.00D
70mm 200 2.06579 256.56 6 12.3 7.5 1.22 -4.25D / -5.00D
70mm 300 3.02787 175.04 6 11.2 7.5 1.79 -3.25D / -4.00D
70mm 400 4.02154 131.79 6 10 7.5 2.39 -2.25D / -3.00D
70mm 500 4.98495 106.32 5 8 8 2.98 +2.00D / -2.00D
70mm 600 6.03232 87.86 6 8 8 3.63 +2.00D / -2.00D
70mm 700 7.11695 74.47 6 7 8 4.32 +2.25D / +4.00D
70mm 800 7.93888 66.76 6 7 9.2 4.86 +4.25D / +6.00D
65mm 1000 10.0113 52.94 4 6 12.6 6.27 +6.25D / +8.00D
65mm 1200 11.9990 44.17 4 6 14.8 7.76 +8.25D / +10.00D
About
Thinkey Optical Co.,Ltd.
Thinkey Optical Co.,Ltd.
Thinkey Optical Co.,Ltd. is a custom SF 1.499,1.56,1.591PC,1.61,1.67,1.74 Photo Grey, Brown Lens Single Vision maker and producer and quality control SF 1.499,1.56,1.591PC,1.61,1.67,1.74 Photo Grey, Brown Lens Single Vision with over 20 years of expertise in manufacturing a wide range of optical lenses. Our facility spans 40 acres, with a production area of 20,000 square meters. Located in Duqiao Town, Linhai City—a coastal area of Zhejiang Province,Thinkey Optical employs approximately 200 workers and operates 6 advanced machines imported from Korea, as well as Satisloh RX equipment from Germany. Our daily production capacity reaches 30,000 pairs of high-quality lenses.
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