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Photochromic Lens
Index:1.598
Transmittance(before action):85%
Transmittance(after action):26%
Diameter : 75/70/65mm
StorkPower Range: 0.00 ~ -10.00 , +0.25 ~ +8.00 0.00 ~ -8.00/-0.25 ~ -2.00
Coating :UC/HC /HMC/ Tintable Hardcoating/Hydrophoic
Material:Geat lake
UV400
Excellent impact resistance lens
Suitable for rimless frame
Better than polycarbonate for drilling, cutting and edging
Performance parameters for 1.60 photochromic gray lens
Relationship between light transmittance (T) and illumination time /sec.
Fig.1. The light transmittance (T) of 1.60 photochromic gray lens as a function of illumination time. The temperature is 22℃(22D) and 32℃(32D), respectively. This experiment was operated in Shanghai that located at 33°N.
Relationship between light transmittance (T) and time /sec. (no illumination)
.
Fig.2. The light transmittance (T) of 1.60 photochromic gray lens as a function of time without illumination. The temperature is 22℃(22D) and 32℃(32D), respectively. This experiment was operated in Shanghai that located at 33°N.
Density:1.30g/cm3
Abbe Value:32
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