MR™ Series
High Index Monomers for Premium Optical Lenses
Overview
Premium optical lenses with high refractive index, high Abbe number, low specific gravity, and high impact resistance are made by polymerizing MR™ Series monomers. MR™ Series is especially suitable for ophthalmic lenses and known as the first thiourethane based high index lens material. MR™ Series offers various products to provide the best solution for optical lens wearers.
MR™ Series Lens Features
MR™ Series clear resins obtained by heat-polymerization have the following features:
HIGH REFRACTIVE INDEX
- Suitable for thinner & lighter lenses
SUPERB OPTICAL QUALITY
- Both high refractive index and high Abbe number give optical performance similar to glass lenses
- Glass mold-casted MR™ Series shows minimal stress-strain
MECHANICAL STRENGTH
- Good impact and static load resistance contribute to ophthalmic lens wearer eye safety
DURABILITY & WEATHERABILITY
- Good weatherability for minimal change in lens color after years of use
- Good compatibility with various coating materials
PREMIUM OPHTHALMIC & SUNGLASS APPLICATIONS
- Good mechanical strength for fashionable rim-less frames
- Good color tintability for high fashion sunglasses which have special color needs
- Suitable for various lens applications including photochromic & polarized lenses
Comparison of MR™ Series and low-Index lens thickness
Product Line-up
| MR™ Series | ||||
|---|---|---|---|---|
| MR-8™ | MR-7™ | MR-10™ | MR-174™ | |
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| Refractive Index(ne) | 1.60 | 1.67 | 1.67 | 1.74 |
| Abbe Number(ve) | 41 | 31 | 31 | 32 |
| Heat Distortion Temp. (℃) | 118 | 85 | 100 | 78 |
| Tintability | Good | Excellent | Good | OK |
| Impact Resistance | Good | Good | Good | OK |
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- Physical properties of clear resins obtained by heat-polymerization of MR™ Series.
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- All properties are representative measurement figures obtained under specified test methods at Mitsui Chemicals, Inc. and are not guaranteed as specifications.
