SEMI-FINISHED LENS

Product Detail

With high quality control, UO has developed a standard for semi-finished lens which guarantees the highest quality in every stage of RX production. It includes strict material tests, extensive compatibility studies and quality tests from every batch of lenses. We offer everything from a single vision white lens to complicated functional lenses, to meet various customization requirements.

Rather than just the cosmetic quality, semi-finished lenses are more about the inner quality, such as precise and stable parameters, especially for the prevailing freeform lens. Freeform lab demands high quality of semi-finished lenses in precise and stable base curves/radius/sag/thickness. Unqualified semi-finished lenses will lead to much waste incapacity, labor, clicking charge, and delivery postpone, the consequence of which will be more than the semi-finished lens cost itself.

What's the most important parameters in regards of semi-finished lenses?

Before putting the semi-finished lenses into RX process, we must make it clear about several data, such as Radius, Sag, True curve, Tooling index, Material index, CT/ET, etc.

Front/Back Radius: A stable precise radius value is very important to the power accuracy and consistency.

True Curve: The correct and precise true curve (not nominal curve) is very important to the power accuracy and consistency.

CT/ET: The center thickness and edge thickness affect the RX production range

Index: Correct material index and tooling index are both very important to get an accurate power.
◆ REGULAR SEMI-FINSIHED LENSES

	Single Vision	Bifocals	Progressive	Lenticular
1.499	√	√	√	√
1.56	√	√	√	√
1.6 MR8	√	√	√	√
1.67 MR7	√	√	√
1.71 KOC	√
1.74 MR174	√
1.59 PC	√	√	√
1.57 ULTRAVEX High-impact	√
1.61 ULTRAVEX High-impact	√

◆ FUNCTIONAL SEMI-FINSIHED LENSES

	Bluecut			Photochromic			Photochromic& Bluecut
	SV	Bifocals	Progressive	SV	Bifocals	Progressive	SV	Bifocals	Progressive
1.499	√	√	√	√
1.56	√	√	√	√	√	√	√	√	√
1.6 MR8	√	√	√	√			√
1.67 MR7	√	√	√	√			√
1.71 KOC	√			√			√
1.74 MR174	√			√			√
1.59 PC	√	√	√	√	√	√	√	√	√
1.57 ULTRAVEX High-impact	√			√			√
1.61 ULTRAVEX High-impact	√			√			√