Specifications

1 High Precision
2 Competitive Price
3 Quick Delivery
4 Custom Size Available
5 Good service

Description:

 

Double Concave Lenses are manufactured with both surfaces concave. These lenses have negative focal lengths. These lenses diverge collimated incident light and form virtual images, which are seen through the lens. they are often used to expand light or increase focal lengths in existing systems. They are used in laser beam expanders, optical character readers, viewers, and projection systems. We will provide precision grade double concave lenses with tighter manufacturing tolerance.

 

Specifications:

 

 

Material	BK7 glass, UV grade fused silica, CaF2
Diameter Tolerance	+0.0,-0.1mm
Center Thickness	+/-0.2mm
Bevle	<0.25mm
Paraxial Focal Length	+/-1% (EFL<1m) +/-2%(EFL>1m)
Surface Quality	60-40 scrath and dig
Clear Aperture	Central 85% of diameter
Coating	Uncoated, AR, HR, PR Coating, etc.

 

 

 

 

 

About Us:

 

We are specialized in the production of various specifications of optical components according to the customers' demand,  And we are committed our standard more than eight years to offering our customers with excellent products, reasonable prices and high level of service.