MR™ Series

The MR ™ Series are the urethane material made by Mitsui Chemical from Japan. It provides both exceptional optical performance and durability, resulting in ophthalmic lenses that are thinner, lighter and stronger. Lenses made of the MR materials are with minimal chromatic aberration and clear vision.

Comparison of Physical Properties

	MR™ Series			Others
	MR-8	MR-7	MR-174	Poly carbonate	Acrylic (RI:1.60)	Middle Index
Refractive Index(ne)	1.6	1.67	1.74	1.59	1.6	1.55
Abbe Number(ve)	41	31	32	28-30	32	34-36
Heat Distortion Temp. (ºC)	118	85	78	142-148	88-89	-
Tintability	Excellent	Good	OK	None	Good	Good
Impact Resistance	Good	Good	OK	Good	OK	OK
Static Load Resistance	Good	Good	OK	Good	Poor	Poor

R.I. 1.60: MR-8 ^TM

The best balanced high index lens material with the largest share of the R.I. 1.60 lens material market. MR-8 is suited to any strength ophthalmic lens and is new standard in ophthalmic lens material.

R.I. 1.67: MR-7 ^TM

Global standard R.I. 1.67 lens material. Great material for thinner lenses with strong impact resistance.

R.I. 1.74: MR-174 ^TM

Ultra high index lens material for ultra thin lenses. Strong prescription lens wearers are now free from thick and heavy lenses.

Features

High Refractive Index for thinner & lighter lenses

Superb Optical Quality for eye comfort(high Abbe value & minimal stress strain)

Mechanical Strength for eye safety

Durability for long-term usage(Minimal yellowing)

Processability for precise sophisticated design

Ideal for Various Lens Applications (color lens, rimless frame, high curve lens, polarized lens, photochromic lens, etc.)