Eyeglass lenses
The glasses lens design addresses the durability issues of water-absorbing antifog layers by combining a water-absorbent layer with a hydrophilic layer on a light-transmitting hard layer, enhancing both scratch resistance and antifog performance.
JP7648742B2Active Publication Date: 2025-03-18HOYA LENS THAILAND LTD
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Patent Information
- Application Number
- JP2023511714
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-03-31
- Filing Date
- 2022-03-31
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2042-03-31
AI Technical Summary
Technical Problem
Existing eyeglass lenses with water-absorbing antifog layers on both sides are prone to damage from external contacts, leading to reduced durability and increased maintenance needs.
Method used
A glasses lens design featuring a water-absorbent anti-fog layer on one main surface and a hydrophilic anti-fog layer on a light-transmitting hard layer on the other main surface, enhancing scratch resistance and antifog performance.
Benefits of technology
The proposed design significantly improves the antifog and scratch resistance of eyeglass lenses, reducing the likelihood of damage from external contacts and maintaining effective antifog performance.
✦ Generated by Eureka AI based on patent content.
Abstract
Provided is an eyeglass lens having excellent anti-fogging properties and scratch resistance, the eyeglass lens comprising: a substrate having first and second principal surfaces; a water-absorbent anti-fogging layer composed of a single layer and formed on the second principal surface side of the substrate; a light-transmitting hard layer formed on the first principal surface of the substrate; and a hydrophilic anti-fogging layer formed on the light-transmitting hard layer.
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