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Home > Products > Optics > Spherical Lenses > BK 7 Precision Plano-Concave Lenses

BK 7 Precision Plano-Concave Lenses
BK 7 Precision Plano-Concave 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

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 plano-concave 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 required lens diameter, then scroll down to find the EFL and AR coating required.

6.35mm BK 7 Plano-Concave Lenses
 Quantity Model Description Price
  KPC013 BK 7 Plano-Concave Lens, 6.35 Dia, -12.5 EFL, Uncoated 
  KPC013AR.14 BK 7 Plano-Concave Lens, 6.35 Dia, -12.5 EFL, 430-700nm 
  KPC013AR.16 BK 7 Plano-Concave Lens, 6.35 Dia, -12.5 EFL, 650-1000nm 
  KPC013AR.18 BK 7 Plano-Concave Lens, 6.35 Dia, -12.5 EFL, 1000-1550nm 
  KPC013AR.33 BK 7 Plano-Concave Lens, 6.35 Dia, -12.5 EFL, 1064nm 
  KPC010 BK 7 Plano-Concave Lens, 6.35 Dia, -25 EFL, Uncoated 
  KPC010AR.14 BK 7 Plano-Concave Lens, 6.35 Dia, -25 EFL, 430-700nm 
  KPC010AR.16 BK 7 Plano-Concave Lens, 6.35 Dia, -25 EFL, 650-1000nm 
  KPC010AR.18 BK 7 Plano-Concave Lens, 6.35 Dia, -25 EFL, 1000-1550nm 
  KPC010AR.33 BK 7 Plano-Concave Lens, 6.35 Dia, -25 EFL, 1064nm 


12.7mm BK 7 Plano-Concave Lenses
 Quantity Model Description Price
  KPC025 BK 7 Plano-Concave Lens, 12.7 Dia, -25 EFL, Uncoated 
  KPC025AR.14 BK 7 Plano-Concave Lens, 12.7 Dia, -25 EFL, 430-700nm 
  KPC025AR.16 BK 7 Plano-Concave Lens, 12.7 Dia, -25 EFL, 650-1000nm 
  KPC025AR.18 BK 7 Plano-Concave Lens, 12.7 Dia, -25 EFL, 1000-1550nm 
  KPC025AR.33 BK 7 Plano-Concave Lens, 12.7 Dia, -25 EFL, 1064nm 
  KPC022 BK 7 Plano-Concave Lens, 12.7 Dia, -50 EFL, Uncoated 
  KPC022AR.14 BK 7 Plano-Concave Lens, 12.7 Dia, -50 EFL, 430-700nm 
  KPC022AR.16 BK 7 Plano-Concave Lens, 12.7 Dia, -50 EFL, 650-1000nm 
  KPC022AR.18 BK 7 Plano-Concave Lens, 12.7 Dia, -50 EFL, 1000-1550nm 
  KPC022AR.33 BK 7 Plano-Concave Lens, 12.7 Dia, -50 EFL, 1064nm 
  KPC019 BK 7 Plano-Concave Lens, 12.7 Dia, -75 EFL, Uncoated 
  KPC019AR.14 BK 7 Plano-Concave Lens, 12.7 Dia, -75 EFL, 430-700nm 
  KPC019AR.16 BK 7 Plano-Concave Lens, 12.7 Dia, -75 EFL, 650-1000nm 
  KPC019AR.18 BK 7 Plano-Concave Lens, 12.7 Dia, -75 EFL, 1000-1550nm 
  KPC019AR.33 BK 7 Plano-Concave Lens, 12.7 Dia, -75 EFL, 1064nm 
  KPC016 BK 7 Plano-Concave Lens, 12.7 Dia, -100 EFL, Uncoated 
  KPC016AR.14 BK 7 Plano-Concave Lens, 12.7 Dia, -100 EFL, 430-700nm 
  KPC016AR.16 BK 7 Plano-Concave Lens, 12.7 Dia, -100 EFL, 650-1000nm 
  KPC016AR.18 BK 7 Plano-Concave Lens, 12.7 Dia, -100 EFL, 1000-1550nm 
  KPC016AR.33 BK 7 Plano-Concave Lens, 12.7 Dia, -100 EFL, 1064nm 


25.4mm BK 7 Plano-Concave Lenses
 Quantity Model Description Price
  KPC043 BK 7 Plano-Concave Lens, 25.4 Dia, -25 EFL, Uncoated 
  KPC043AR.14 BK 7 Plano-Concave Lens, 25.4 Dia, -25 EFL, 430-700nm 
  KPC043AR.16 BK 7 Plano-Concave Lens, 25.4 Dia, -25 EFL, 650-1000nm 
  KPC043AR.18 BK 7 Plano-Concave Lens, 25.4 Dia, -25 EFL, 1000-1550nm 
  KPC043AR.33 BK 7 Plano-Concave Lens, 25.4 Dia, -25 EFL, 1064nm 
  KPC040 BK 7 Plano-Concave Lens, 25.4 Dia, -50 EFL, Uncoated 
  KPC040AR.14 BK 7 Plano-Concave Lens, 25.4 Dia, -50 EFL, 430-700nm 
  KPC040AR.16 BK 7 Plano-Concave Lens, 25.4 Dia, -50 EFL, 650-1000nm 
  KPC040AR.18 BK 7 Plano-Concave Lens, 25.4 Dia, -50 EFL, 1000-1550nm 
  KPC040AR.33 BK 7 Plano-Concave Lens, 25.4 Dia, -50 EFL, 1064nm 
  KPC037 BK 7 Plano-Concave Lens, 25.4 Dia, -75 EFL, Uncoated 
  KPC037AR.14 BK 7 Plano-Concave Lens, 25.4 Dia, -75 EFL, 430-700nm 
  KPC037AR.16 BK 7 Plano-Concave Lens, 25.4 Dia, -75 EFL, 650-1000nm 
  KPC037AR.18 BK 7 Plano-Concave Lens, 25.4 Dia, -75 EFL, 1000-1550nm 
  KPC037AR.33 BK 7 Plano-Concave Lens, 25.4 Dia, -75 EFL, 1064nm 
  KPC034 BK 7 Plano-Concave Lens, 25.4 Dia, -100 EFL, Uncoated 
  KPC034AR.14 BK 7 Plano-Concave Lens, 25.4 Dia, -100 EFL, 430-700nm 
  KPC034AR.16 BK 7 Plano-Concave Lens, 25.4 Dia, -100 EFL, 650-1000nm 
  KPC034AR.18 BK 7 Plano-Concave Lens, 25.4 Dia, -100 EFL, 1000-1550nm 
  KPC034AR.33 BK 7 Plano-Concave Lens, 25.4 Dia, -100 EFL, 1064nm 
  KPC031 BK 7 Plano-Concave Lens, 25.4 Dia, -150 EFL, Uncoated 
  KPC031AR.14 BK 7 Plano-Concave Lens, 25.4 Dia, -150 EFL, 430-700nm 
  KPC031AR.16 BK 7 Plano-Concave Lens, 25.4 Dia, -150 EFL, 650-1000nm 
  KPC031AR.18 BK 7 Plano-Concave Lens, 25.4 Dia, -150 EFL, 1000-1550nm 
  KPC031AR.33 BK 7 Plano-Concave Lens, 25.4 Dia, -150 EFL, 1064nm 
  KPC028 BK 7 Plano-Concave Lens, 25.4 Dia, -200 EFL, Uncoated 
  KPC028AR.14 BK 7 Plano-Concave Lens, 25.4 Dia, -200 EFL, 430-700nm 
  KPC028AR.16 BK 7 Plano-Concave Lens, 25.4 Dia, -200 EFL, 650-1000nm 
  KPC028AR.18 BK 7 Plano-Concave Lens, 25.4 Dia, -200 EFL, 1000-1550nm 
  KPC028AR.33 BK 7 Plano-Concave Lens, 25.4 Dia, -200 EFL, 1064nm 


50.8mm BK 7 Plano-Concave Lenses
 Quantity Model Description Price
  KPC079 BK 7 Plano-Concave Lens, 50.8 Dia, -750 EFL, Uncoated 
  KPC079AR.14 BK 7 Plano-Concave Lens, 50.8 Dia, -750 EFL, 430-700nm 
  KPC079AR.16 BK 7 Plano-Concave Lens, 50.8 Dia, -750 EFL, 650-1000nm 
  KPC079AR.18 BK 7 Plano-Concave Lens, 50.8 Dia, -750 EFL, 1000-1550nm 
  KPC079AR.33 BK 7 Plano-Concave Lens, 50.8 Dia, -750 EFL, 1064nm 
  KPC076 BK 7 Plano-Concave Lens, 50.8 Dia, -100 EFL, Uncoated 
  KPC076AR.14 BK 7 Plano-Concave Lens, 50.8 Dia, -100 EFL, 430-700nm 
  KPC076AR.16 BK 7 Plano-Concave Lens, 50.8 Dia, -100 EFL, 650-1000nm 
  KPC076AR.18 BK 7 Plano-Concave Lens, 50.8 Dia, -100 EFL, 1000-1550nm 
  KPC076AR.33 BK 7 Plano-Concave Lens, 50.8 Dia, -100 EFL, 1064nm 
  KPC073 BK 7 Plano-Concave Lens, 50.8 Dia, -150 EFL, Uncoated 
  KPC073AR.14 BK 7 Plano-Concave Lens, 50.8 Dia, -150 EFL, 430-700nm 
  KPC073AR.16 BK 7 Plano-Concave Lens, 50.8 Dia, -150 EFL, 650-1000nm 
  KPC073AR.18 BK 7 Plano-Concave Lens, 50.8 Dia, -150 EFL, 1000-1550nm 
  KPC073AR.33 BK 7 Plano-Concave Lens, 50.8 Dia, -150 EFL, 1064nm 
  KPC070 BK 7 Plano-Concave Lens, 50.8 Dia, -200 EFL, Uncoated 
  KPC070AR.14 BK 7 Plano-Concave Lens, 50.8 Dia, -200 EFL, 430-700nm 
  KPC070AR.16 BK 7 Plano-Concave Lens, 50.8 Dia, -200 EFL, 650-1000nm 
  KPC070AR.18 BK 7 Plano-Concave Lens, 50.8 Dia, -200 EFL, 1000-1550nm 
  KPC070AR.33 BK 7 Plano-Concave Lens, 50.8 Dia, -200 EFL, 1064nm 
  KPC067 BK 7 Plano-Concave Lens, 50.8 Dia, -250 EFL, Uncoated 
  KPC067AR.14 BK 7 Plano-Concave Lens, 50.8 Dia, -250 EFL, 430-700nm 
  KPC067AR.16 BK 7 Plano-Concave Lens, 50.8 Dia, -250 EFL, 650-1000nm 
  KPC067AR.18 BK 7 Plano-Concave Lens, 50.8 Dia, -250 EFL, 1000-1550nm 
  KPC067AR.33 BK 7 Plano-Concave Lens, 50.8 Dia, -250 EFL, 1064nm 
  KPC064 BK 7 Plano-Concave Lens, 50.8 Dia, -500 EFL, Uncoated 
  KPC064AR.14 BK 7 Plano-Concave Lens, 50.8 Dia, -500 EFL, 430-700nm 
  KPC064AR.16 BK 7 Plano-Concave Lens, 50.8 Dia, -500 EFL, 650-1000nm 
  KPC064AR.18 BK 7 Plano-Concave Lens, 50.8 Dia, -500 EFL, 1000-1550nm 
  KPC064AR.33 BK 7 Plano-Concave Lens, 50.8 Dia, -500 EFL, 1064nm 
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