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What is the decription of the convex lens?
A convex or "positive" lens is thicker in the middle and thinner at the edges. Convex lenses project a real image behind the lens. It is used to focus, collect and collimate light. The convex lens is for those who are farsighted.
What is the classification of the convex lens by the structure?
The convex lens has two types by the structure, they are plano convex lens and double convex lens.
What is the specifications of the large convex lens?
Category: Lens
Item: large convex lens
Material: optical glass BK7 ,k9 etc.
Dimension Tolerance ：+0/-0.5mm
Center Thickness Tolerance： +/-0.3mm
Focal length ：±2%
Centration ：<3 arc min
Clear Aperture (CA)： >90%
Fringe： 1-5
rregularity of Fringes： 0.2-0.5
Surface Quality(S/D) ：60/40 scratch and dig or 40/20
Chamfer: <0.5mmx45 degree
Coating Broadband :AR coating or customized
Size:1mm-600mm
Special size can be offered upon reuest. All dimensions are in mm unless otherwise specified.
Every product is strongly packed by carton box with foam inside. Separate safe package avoid broken
The convex lenses will be delivered by International Express: Fedex, TNT, UPS, EMS, DHL
It is also according to customers' requirements. The economic affordable international express method is preferred
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