07 AUG 2017  |  --> CLOSED ON: 31 OCT 2017  |  REWARD: INR 1,00,000
Reward money is paid in exchange of legally acquiring the solution, implementing it to solve the problem and meeting the success criteria. Milestones for paying the reward money would depend upon the complexity of challenge and maturity of the proposed solution, which would be discussed with the solver as soon as the proposed solution is selected by us.

31 OCT 2017

INR 1,00,000

A cost-effective and non-destructive method or equipment for evaluating the scratch resistance of ophthalmic lens is sought.

Challenge Details

Polymeric ophthalmic lenses (plastic) have become increasingly popular recently due to their excellent optical properties, impact resistance, lightweight, etc. These plastic materials, however, tend to be relatively soft and scratch more easily than glass. Hence hard coatings are applied to impart increased scratch resistance.

To assess the effectiveness of a coating's resistance to scratch, there are a number of instruments. Similarly, there are many instruments available to assess the resistance to penetration for coatings. 

Unfortunately, all these methods are destructive in nature and make scratches or dents on the surface. There is high-end lab-scale equipment like Nano Indentors for this purpose but these are very expensive.

We need a cost-effective method (equipment) that could measure the scratch resistance in a non-destructive way with accuracy and repeatability. The equipment needed should be portable, inexpensive, and simple to install and operate in a retail environment.

Have any query or need more clarification about this challenge?