5 products in this product line

 

Like plano-concave lenses, double-concave lenses diverge collimated incident light, and form only virtual images which are seen through the lenses. They are often used to expand light beams or increase focal lengths in existing systems and are normally used in combination with other lenses. In a single lens application you should consider using them in preference to single plano-concave lenses if the magnification lies in the region.

Specifications:

 Material
 BK7
 Diameter Tolerance
 +0.0/-0.1mm
 Paraxial Focal Length
 ±2%
 Centration
 3 arc minutes
 Surface Figure
 λ/4 @ 632.8 nm
 Surface Quality
 60/40
 Clear Aperture
 >80%
 Bevel
 
 Coating
 Uncoated
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