6 products in this product line

 

These lenses have negative focal lengths, 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.

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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