High-index plastics (1.60, 1.67, 1.74) bend light more strongly so lenses for strong prescriptions can be thinner and lighter. Most high-index monomer comes from Mitsui Chemicals' MR series; lens casting is concentrated in Japan, Korea, Thailand and China.
High-Index Lenses (1.60–1.74) from Japan — varieties
Each button first explains the product, then lists Japan makers with specialities and contact routes.
High-Index Lenses (1.60–1.74) (Thin lenses for strong prescriptions)1.60 index lenses1.67 index lenses1.74 index lensesHigh-index aspheric lensesHigh-index progressive lensesHigh-index lenses for rimless framesMR-8 and MR-7 monomer lenses1.90 index glass lenses
Trade routes for high-index lenses (1.60–1.74) in Japan
ManufacturersExporters and wholesalersWholesalers and distributorsCertified suppliers (ISO 9001, CE, FDA, ISO 12870)Price and lead time
Named high-index lenses (1.60–1.74) producers in Japan
| Company | City | Speciality | Live search |
|---|---|---|---|
| Hoya Corporation (Hoya Vision Care) | Tokyo | One of the largest ophthalmic lens makers in the world | AboutExplore |
| Nikon-Essilor | Tokyo | Nikon branded lenses | AboutExplore |
| Seiko Optical Products (Hoya) | Tokyo | Seiko branded lenses and progressive designs | AboutExplore |
| Tokai Optical | Okazaki (Aichi) | Listed lens maker, high-index and photochromic | AboutExplore |
| Itoh Optical Industrial | Gamagori (Aichi) | Listed lens maker | AboutExplore |
| Mitsui Chemicals | Tokyo | MR-series high-index lens monomers | AboutExplore |