China Cheap price Prescription Bifocals Online - Ultravex

China Cheap price Prescription Bifocals Online - Ultravex – Universe Optical

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China Cheap price Prescription Bifocals Online - Ultravex – Universe Optical Detail:

Ultravex

High impact hard resin lens series

Parameters

Reflective Index	1.57, 1.61
UV	UV400, UV++
Designs	Spherical, Aspherical
Coatings	UC, HC, HMC+EMI, SUPERHYDROPHOBIC, BLUECUT
Available	Finished, Semi-finished

Benefits

• Particularly resistant to high impact

• Easy edging, normal edging machines are fine

• Good optical features, higher ABBE value

• Suitable for drilling and mounting rimless frames

Properties

	Ultravex	CR-39™	Poly	Mid-Index	Hi-Index
ABBE	42	58	31	34-41	32-42
Scratch Resistance (Bayer)	0.5	1	0.2	0.3-0.5	0.5
FDA Impact Resistance	Pass	Fail	Pass	Fail	Some Pass
Specific Gravity	1.16	1.32	1.22	1.20-1.34	1.30-1.40
Refractive Index	1.58	1.5	1.59	1.53-1.57	1.59-1.71
Chemical Resistance	Good	Good	Unacceptable	Good	Good

Processing

	Ultravex	CR-39™	Poly	Mid-Index	Hi-Index
Surfacing	Good	Very good	Difficult	Good	Good
Tint Rate	Average	Fast	Non-tintable	Average	Fast
Typical Center Thickness	1.3mm	1.88mm	1.5mm	1.5mm	1.5mm

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