The disadvantages of high index optical lens. BA063

Written by Optician Club on . Posted in Eyeglasses Frames

Optician Knowledge:

Q: The disadvantages of high index optical lens.

A: In accordance with "Eyecare Professional Magazine," with a few prescriptions, there would be little or no advantage in having a high index lens, as the weight and thickness benefits from a high index lens along with a conventional lens can be minimal. It is critical to find the material of high index lenses based on need. High index lenses made out of glass have become brittle instead of suitable for children or people involved with sports.

Ernst Abbe was obviously a German mathematician and physicist who found that lenses created from different materials have varying numbers of chromatic aberration. This is what's called the Abbe value: the greater the Abbe value, minimal volume of distortion while looking through the lens. Standard glass lenses have a great Abbe value, but high index lenses have a lower Abbe value. Cosmetically high index lenses could possibly be more appealing, nonetheless they do not correct vision and also standard lenses.

Conventional lenses reflect 8 percent of light, while high index lenses reflect nearly 50 % of light. This large number can result in eye fatigue to make night driving difficult. With an antireflective coating, it is possible to solve this problem. Take into account that antireflective coatings can deteriorate with everyday deterioration.

High index lenses be more expensive to manufacture since they convey more refractive ability. High index lenses can even be constructed from polycarbonate. Polycarbonate is tougher and ideal for children and sports enthusiasts; however, the material has a low Abbe value and is more epensive. Another option is Trivex, developed in 2001. It is rather tough, but has a significantly higher sale price than conventional lenses.

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Product Info

disadvantages of high index optical lens

disadvantages of high index optical lens

disadvantages of high index optical lens

disadvantages of high index optical lens

  • Model No: BA063
  • Highlight: Latest Fashion Style
  • Gender: Woman’s Eyewear
  • Age Group: Adults
  • Frame Size: 50-16-145
  • Shape: Oval Eyewear
  • Spring Hinge: No
  • Color: Purple
  • Available Color: Burgundy
  • Material: Acetate
  • Tips: No
  • Bridge: Unadjustable nose pads
  • Original: ShenZhen
  • Rim: Full-Rim Spectacle
  • Certificate: CE and FDA are certificated

Sales Info:

Shipping Info:

  • Package: 1pcs/Poly-bag, 12pcs/Inner Box, 300PCS/Carton
  • Carton Box Size: 84*27*31
  • Cross Weight: 12KGS
  • HS Code: 90031900
  • Delivery Time: Within 7 days upon received your payment
  • FedEx/DHL/UPS/DPEX/ARAMEX/TNT/EMS

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