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Home > Products > Optics > Spherical Lenses > BK 7 Precision Bi-Convex Lenses

BK 7 Precision Bi-Convex Lenses
BK 7 Precision Bi-Convex Lenses

    • BK 7 optical glass
  • ≤λ/4 surface irregularity, 40-20 scratch-dig
  • Broadband or laser line AR coatings available
  • Standard diameters and focal lengths
  • Over 200 distinct models to choose from

Product Description Product Detail Specifications Drawings Catalog PDF
Product Description
Designed to meet the demanding requirements of laser electro-optic applications, Newport's BK 7 precision bi-convex lenses are manufactured from fine annealed optical glass and are polished to tight tolerances using master test plates to ensure minimum wavefront distortion. Standard diameters from 6.35 mm to 50.8 mm and standard focal lengths are available either uncoated or multi-layer AR coated, with a choice of broadband coatings or a laser line V-coating for 1064 nm.


Ordering Information
To order a lens, find the ordering table with the lens Diameter required, then scroll down to the EFL needed, and then select the AR coating as required.

6.35mm Diameter BK 7 Bi-Convex Lens Ordering Information
 Quantity Model Description Price
  KBX010 BK 7 Bi-Convex Lens, 6.35 Dia, 6.4 EFL, Uncoated 
  KBX010AR.14 BK 7 Bi-Convex Lens, 6.35 Dia, 6.4 EFL, 430-700nm 
  KBX010AR.16 BK 7 Bi-Convex Lens, 6.35 Dia, 6.4 EFL, 650-1000nm 
  KBX010AR.18 BK 7 Bi-Convex Lens, 6.35 Dia, 6.4 EFL, 1000-1550nm 
  KBX010AR.33 BK 7 Bi-Convex Lens, 6.35 Dia, 6.4 EFL, 1064nm 
  KBX013 BK 7 Bi-Convex Lens, 6.35 Dia, 12.7 EFL, Uncoated 
  KBX013AR.14 BK 7 Bi-Convex Lens, 6.35 Dia, 12.7 EFL, 430-700nm 
  KBX013AR.16 BK 7 Bi-Convex Lens, 6.35 Dia, 12.7 EFL, 650-1000nm 
  KBX013AR.18 BK 7 Bi-Convex Lens, 6.35 Dia, 12.7 EFL, 1000-1550nm 
  KBX013AR.33 BK 7 Bi-Convex Lens, 6.35 Dia, 12.7 EFL, 1064nm 
  KBX016 BK 7 Bi-Convex Lens, 6.35 Dia, 19.0 EFL, Uncoated 
  KBX016AR.14 BK 7 Bi-Convex Lens, 6.35 Dia, 19.0 EFL, 430-700nm 
  KBX016AR.16 BK 7 Bi-Convex Lens, 6.35 Dia, 19.0 EFL, 650-1000nm 
  KBX016AR.18 BK 7 Bi-Convex Lens, 6.35 Dia, 19.0 EFL, 1000-1550nm 
  KBX016AR.33 BK 7 Bi-Convex Lens, 6.35 Dia, 19.0 EFL, 1064nm 
  KBX019 BK 7 Bi-Convex Lens, 6.35 Dia, 25.4 EFL, Uncoated 
  KBX019AR.14 BK 7 Bi-Convex Lens, 6.35 Dia, 25.4 EFL, 430-700nm 
  KBX019AR.16 BK 7 Bi-Convex Lens, 6.35 Dia, 25.4 EFL, 650-1000nm 
  KBX019AR.18 BK 7 Bi-Convex Lens, 6.35 Dia, 25.4 EFL, 1000-1550nm 
  KBX019AR.33 BK 7 Bi-Convex Lens, 6.35 Dia, 25.4 EFL, 1064nm 


12.7mm Diameter BK 7 Bi-Convex Lens Ordering Information
 Quantity Model Description Price
  KBX022 BK 7 Bi-Convex Lens, 12.7 Dia, 12.7 EFL, Uncoated 
  KBX022AR.14 BK 7 Bi-Convex Lens, 12.7 Dia, 12.7 EFL, 430-700nm 
  KBX022AR.16 BK 7 Bi-Convex Lens, 12.7 Dia, 12.7 EFL, 650-1000nm 
  KBX022AR.18 BK 7 Bi-Convex Lens, 12.7 Dia, 12.7 EFL, 1000-1550nm 
  KBX022AR.33 BK 7 Bi-Convex Lens, 12.7 Dia, 12.7 EFL, 1064nm 
  KBX025 BK 7 Bi-Convex Lens, 12.7 Dia, 19.0 EFL, Uncoated 
  KBX025AR.14 BK 7 Bi-Convex Lens, 12.7 Dia, 19.0 EFL, 430-700nm 
  KBX025AR.16 BK 7 Bi-Convex Lens, 12.7 Dia, 19.0 EFL, 650-1000nm 
  KBX025AR.18 BK 7 Bi-Convex Lens, 12.7 Dia, 19.0 EFL, 1000-1550nm 
  KBX025AR.33 BK 7 Bi-Convex Lens, 12.7 Dia, 19.0 EFL, 1064nm 
  KBX028 BK 7 Bi-Convex Lens, 12.7 Dia, 25.4 EFL, Uncoated 
  KBX028AR.14 BK 7 Bi-Convex Lens, 12.7 Dia, 25.4 EFL, 430-700nm 
  KBX028AR.16 BK 7 Bi-Convex Lens, 12.7 Dia, 25.4 EFL, 650-1000nm 
  KBX028AR.18 BK 7 Bi-Convex Lens, 12.7 Dia, 25.4 EFL, 1000-1550nm 
  KBX028AR.33 BK 7 Bi-Convex Lens, 12.7 Dia, 25.4 EFL, 1064nm 
  KBX031 BK 7 Bi-Convex Lens, 12.7 Dia, 38.1 EFL, Uncoated 
  KBX031AR.14 BK 7 Bi-Convex Lens, 12.7 Dia, 38.1 EFL, 430-700nm 
  KBX031AR.16 BK 7 Bi-Convex Lens, 12.7 Dia, 38.1 EFL, 650-1000nm 
  KBX031AR.18 BK 7 Bi-Convex Lens, 12.7 Dia, 38.1 EFL, 1000-1550nm 
  KBX031AR.33 BK 7 Bi-Convex Lens, 12.7 Dia, 38.1 EFL, 1064nm 
  KBX034 BK 7 Bi-Convex Lens, 12.7 Dia, 50.2 EFL, Uncoated 
  KBX034AR.14 BK 7 Bi-Convex Lens, 12.7 Dia, 50.2 EFL, 430-700nm 
  KBX034AR.16 BK 7 Bi-Convex Lens, 12.7 Dia, 50.2 EFL, 650-1000nm 
  KBX034AR.18 BK 7 Bi-Convex Lens, 12.7 Dia, 50.2 EFL, 1000-1550nm 
  KBX034AR.33 BK 7 Bi-Convex Lens, 12.7 Dia, 50.2 EFL, 1064nm 
  KBX037 BK 7 Bi-Convex Lens, 12.7 Dia, 62.9 EFL, Uncoated 
  KBX037AR.14 BK 7 Bi-Convex Lens, 12.7 Dia, 62.9 EFL, 430-700nm 
  KBX037AR.16 BK 7 Bi-Convex Lens, 12.7 Dia, 62.9 EFL, 650-1000nm 
  KBX037AR.18 BK 7 Bi-Convex Lens, 12.7 Dia, 62.9 EFL, 1000-1550nm 
  KBX037AR.33 BK 7 Bi-Convex Lens, 12.7 Dia, 62.9 EFL, 1064nm 
  KBX040 BK 7 Bi-Convex Lens, 12.7 Dia, 75.6 EFL, Uncoated 
  KBX040AR.14 BK 7 Bi-Convex Lens, 12.7 Dia, 75.6 EFL, 430-700nm 
  KBX040AR.16 BK 7 Bi-Convex Lens, 12.7 Dia, 75.6 EFL, 650-1000nm 
  KBX040AR.18 BK 7 Bi-Convex Lens, 12.7 Dia, 75.6 EFL, 1000-1550nm 
  KBX040AR.33 BK 7 Bi-Convex Lens, 12.7 Dia, 75.6 EFL, 1064nm 


25.4mm Diameter BK 7 Bi-Convex Lens Ordering Information
 Quantity Model Description Price
  KBX043 BK 7 Bi-Convex Lens, 25.4 Dia, 19.0 EFL, Uncoated 
  KBX043AR.14 BK 7 Bi-Convex Lens, 25.4 Dia, 19.0 EFL, 430-700nm 
  KBX043AR.16 BK 7 Bi-Convex Lens, 25.4 Dia, 19.0 EFL, 650-1000nm 
  KBX043AR.18 BK 7 Bi-Convex Lens, 25.4 Dia, 19.0 EFL, 1000-1550nm 
  KBX043AR.33 BK 7 Bi-Convex Lens, 25.4 Dia, 19.0 EFL, 1064nm 
  KBX046 BK 7 Bi-Convex Lens, 25.4 Dia, 25.4 EFL, Uncoated 
  KBX046AR.14 BK 7 Bi-Convex Lens, 25.4 Dia, 25.4 EFL, 430-700nm 
  KBX046AR.16 BK 7 Bi-Convex Lens, 25.4 Dia, 25.4 EFL, 650-1000nm 
  KBX046AR.18 BK 7 Bi-Convex Lens, 25.4 Dia, 25.4 EFL, 1000-1550nm 
  KBX046AR.33 BK 7 Bi-Convex Lens, 25.4 Dia, 25.4 EFL, 1064nm 
  KBX049 BK 7 Bi-Convex Lens, 25.4 Dia, 38.1 EFL, Uncoated 
  KBX049AR.14 BK 7 Bi-Convex Lens, 25.4 Dia, 38.1 EFL, 430-700nm 
  KBX049AR.16 BK 7 Bi-Convex Lens, 25.4 Dia, 38.1 EFL, 650-1000nm 
  KBX049AR.18 BK 7 Bi-Convex Lens, 25.4 Dia, 38.1 EFL, 1000-1550nm 
  KBX049AR.33 BK 7 Bi-Convex Lens, 25.4 Dia, 38.1 EFL, 1064nm 
  KBX052 BK 7 Bi-Convex Lens, 25.4 Dia, 50.2 EFL, Uncoated 
  KBX052AR.14 BK 7 Bi-Convex Lens, 25.4 Dia, 50.2 EFL, 430-700nm 
  KBX052AR.16 BK 7 Bi-Convex Lens, 25.4 Dia, 50.2 EFL, 650-1000nm 
  KBX052AR.18 BK 7 Bi-Convex Lens, 25.4 Dia, 50.2 EFL, 1000-1550nm 
  KBX052AR.33 BK 7 Bi-Convex Lens, 25.4 Dia, 50.2 EFL, 1064nm 
  KBX055 BK 7 Bi-Convex Lens, 25.4 Dia, 62.9 EFL, Uncoated 
  KBX055AR.14 BK 7 Bi-Convex Lens, 25.4 Dia, 62.9 EFL, 430-700nm 
  KBX055AR.16 BK 7 Bi-Convex Lens, 25.4 Dia, 62.9 EFL, 650-1000nm 
  KBX055AR.18 BK 7 Bi-Convex Lens, 25.4 Dia, 62.9 EFL, 1000-1550nm 
  KBX055AR.33 BK 7 Bi-Convex Lens, 25.4 Dia, 62.9 EFL, 1064nm 
  KBX058 BK 7 Bi-Convex Lens, 25.4 Dia, 75.6 EFL, Uncoated 
  KBX058AR.14 BK 7 Bi-Convex Lens, 25.4 Dia, 75.6 EFL, 430-700nm 
  KBX058AR.16 BK 7 Bi-Convex Lens, 25.4 Dia, 75.6 EFL, 650-1000nm 
  KBX058AR.18 BK 7 Bi-Convex Lens, 25.4 Dia, 75.6 EFL, 1000-1550nm 
  KBX058AR.33 BK 7 Bi-Convex Lens, 25.4 Dia, 75.6 EFL, 1064nm 
  KBX061 BK 7 Bi-Convex Lens, 25.4 Dia, 88.3 EFL, Uncoated 
  KBX061AR.14 BK 7 Bi-Convex Lens, 25.4 Dia, 88.3 EFL, 430-700nm 
  KBX061AR.16 BK 7 Bi-Convex Lens, 25.4 Dia, 88.3 EFL, 650-1000nm 
  KBX061AR.18 BK 7 Bi-Convex Lens, 25.4 Dia, 88.3 EFL, 1000-1550nm 
  KBX061AR.33 BK 7 Bi-Convex Lens, 25.4 Dia, 88.3 EFL, 1064nm 
  KBX064 BK 7 Bi-Convex Lens, 25.4 Dia, 100 EFL, Uncoated 
  KBX064AR.14 BK 7 Bi-Convex Lens, 25.4 Dia, 100 EFL, 430-700nm 
  KBX064AR.16 BK 7 Bi-Convex Lens, 25.4 Dia, 100 EFL, 650-1000nm 
  KBX064AR.18 BK 7 Bi-Convex Lens, 25.4 Dia, 100 EFL, 1000-1550nm 
  KBX064AR.33 BK 7 Bi-Convex Lens, 25.4 Dia, 100 EFL, 1064nm 
  KBX067 BK 7 Bi-Convex Lens, 25.4 Dia, 125 EFL, Uncoated 
  KBX067AR.14 BK 7 Bi-Convex Lens, 25.4 Dia, 125 EFL, 430-700nm 
  KBX067AR.16 BK 7 Bi-Convex Lens, 25.4 Dia, 125 EFL, 650-1000nm 
  KBX067AR.18 BK 7 Bi-Convex Lens, 25.4 Dia, 125 EFL, 1000-1550nm 
  KBX067AR.33 BK 7 Bi-Convex Lens, 25.4 Dia, 125 EFL, 1064nm 
  KBX070 BK 7 Bi-Convex Lens, 25.4 Dia, 150 EFL, Uncoated 
  KBX070AR.14 BK 7 Bi-Convex Lens, 25.4 Dia, 150 EFL, 430-700nm 
  KBX070AR.16 BK 7 Bi-Convex Lens, 25.4 Dia, 150 EFL, 650-1000nm 
  KBX070AR.18 BK 7 Bi-Convex Lens, 25.4 Dia, 150 EFL, 1000-1550nm 
  KBX070AR.33 BK 7 Bi-Convex Lens, 25.4 Dia, 150 EFL, 1064nm 
  KBX073 BK 7 Bi-Convex Lens, 25.4 Dia, 175 EFL, Uncoated 
  KBX073AR.14 BK 7 Bi-Convex Lens, 25.4 Dia, 175 EFL, 430-700nm 
  KBX073AR.16 BK 7 Bi-Convex Lens, 25.4 Dia, 175 EFL, 650-1000nm 
  KBX073AR.18 BK 7 Bi-Convex Lens, 25.4 Dia, 175 EFL, 1000-1550nm 
  KBX073AR.33 BK 7 Bi-Convex Lens, 25.4 Dia, 175 EFL, 1064nm 
  KBX076 BK 7 Bi-Convex Lens, 25.4 Dia, 200 EFL, Uncoated 
  KBX076AR.14 BK 7 Bi-Convex Lens, 25.4 Dia, 200 EFL, 430-700nm 
  KBX076AR.16 BK 7 Bi-Convex Lens, 25.4 Dia, 200 EFL, 650-1000nm 
  KBX076AR.18 BK 7 Bi-Convex Lens, 25.4 Dia, 200 EFL, 1000-1550nm 
  KBX076AR.33 BK 7 Bi-Convex Lens, 25.4 Dia, 200 EFL, 1064nm 
  KBX079 BK 7 Bi-Convex Lens, 25.4 Dia, 250 EFL, Uncoated 
  KBX079AR.14 BK 7 Bi-Convex Lens, 25.4 Dia, 250 EFL, 430-700nm 
  KBX079AR.16 BK 7 Bi-Convex Lens, 25.4 Dia, 250 EFL, 650-1000nm 
  KBX079AR.18 BK 7 Bi-Convex Lens, 25.4 Dia, 250 EFL, 1000-1550nm 
  KBX079AR.33 BK 7 Bi-Convex Lens, 25.4 Dia, 250 EFL, 1064nm 
  KBX082 BK 7 Bi-Convex Lens, 25.4 Dia, 500 EFL, Uncoated 
  KBX082AR.14 BK 7 Bi-Convex Lens, 25.4 Dia, 500 EFL, 430-700nm 
  KBX082AR.16 BK 7 Bi-Convex Lens, 25.4 Dia, 500 EFL, 650-1000nm 
  KBX082AR.18 BK 7 Bi-Convex Lens, 25.4 Dia, 500 EFL, 1000-1550nm 
  KBX082AR.33 BK 7