Photochromic Blue Cut Optical Lens
The new product have three functions:
1. vision correction 2. Photochromic 3. Blue Light Cutting.
PHOTOMAGIC UV420CUT LENS TECHNICAL INFORMATION
1. Vision Correction
2. Photomagic Performance:
2.1 PHYSICAL AND OPTICAL PROPERTIES
Dingxin Photomagic UV420cut lenses are produced of high quality, low density, and middle index (1.56) photochromic monomers. The photomagic dyes are fully incorporated into the material rather than applied to the surface. The lenses keep the ability to respond to visible light longer and are more color consistency.
Briechungsindex N = 1.56
ABBE Nummer V = 41.1
2.2 TRANSMISSION PROPERTIES
Transmission properties of Dingxin Photomagic UV420cut lenses are very superior compared to other photochromic lenses in the market; they can reach 20% 〜21% transmittance after 15 minutes of darkening by ISO standard solar simulator. Wéini faded indoors, Dingxin Photomagic UV420cut lenses Dingxin back to 65% 〜70% transmittance within 2 minutes. Transmission drop of the darkening state mainly happens within the 30 seconds (absorption increase of more than 65%), and makes the darkened Dingxin lenses like a real sun-glass lens. The transmission features of these two photomagic lenses are described in the following table and graph.