Double-concave Lenses

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Home > Lenses > 14BCV - Double-concave Lenses

		Diverges incident light

		Lower spherical aberrations than for Plano-Concave lenses

		Other dimensions are available in small and mass production quantities

		Various AR coatings are available for all these lenses. Please refer to the Coatings Section

Standard Specifications

Material	BK7, UVFS
Diameter Tolerance	+0.0, -0.12 mm
Thickness Tolerance	±0.5 mm
Centration	<3 arc minutes
Clear Aperture	>90%
Surface Irregularity	λ/8 @ 633 nm
Surface Quality	40-20 scratch & dig
Paraxial focal length	±2% @ 546 nm for BK7 ±2% @ 355 nm for UVFS
AR Coatings	None. Please refer to the Coatings Section

Double concave lenses are symmetrical with equal radius of curvature on both sides. The biconcave lenses are used in optical systems in combination with other lenses. These lenses also work as beamexpanders, optical character readers, viewers and projection systems. Lenses can be anti-reflection coated (please refer to the Coatings Section).

BK7 Double-Concave Lenses

Diameter	Focal Length	Centre thickness CT	Edge thickness ET	Ordering code
12,7 mm	12,7 mm	3,2 mm	5 mm	14BCV12.7-05-1
12,7 mm	25 mm	2,2 mm	3 mm	14BCV25-05-1
12,7 mm	40 mm	2,4 mm	3 mm	14BCV40-05-1
12,7 mm	50 mm	2,6 mm	3 mm	14BCV50-05-1
12,7 mm	60 mm	2,6 mm	3 mm	14BCV60-05-1
12,7 mm	75 mm	2,7 mm	3 mm	14BCV75-05-1
12,7 mm	100 mm	2,8 mm	3 mm	14BCV100-05-1
12,7 mm	125 mm	1,7 mm	2 mm	14BCV125-05-1
12,7 mm	150 mm	1,8 mm	2 mm	14BCV150-05-1
12,7 mm	200 mm	1,8 mm	2 mm	14BCV200-05-1
12,7 mm	250 mm	1,8 mm	2 mm	14BCV250-05-1
25,4 mm	25 mm	4,8 mm	11,2 mm	14BCV25-1-1
25,4 mm	40 mm	2,7 mm	6,1 mm	14BCV40-1-1
25,4 mm	50 mm	4,4 mm	6 mm	14BCV50-1-1
25,4 mm	60 mm	2,6 mm	5 mm	14BCV60-1-1
25,4 mm	75 mm	3,7 mm	4,7 mm	14BCV75-1-1
25,4 mm	100 mm	3,2 mm	4 mm	14BCV100-1-1
25,4 mm	125 mm	3,1 mm	4 mm	14BCV125-1-1
25,4 mm	150 mm	3 mm	4 mm	14BCV150-1-1
25,4 mm	200 mm	2,8 mm	3,5 mm	14BCV200-1-1
25,4 mm	250 mm	2,9 mm	3,5 mm	14BCV250-1-1
25,4 mm	400 mm	3,2 mm	3,5 mm	14BCV400-1-1
25,4 mm	500 mm	3,2 mm	3,5 mm	14BCV500-1-1

UVFS Double-Concave Lenses

Diameter	Focal Length	Centre thickness CT	Edge thickness ET	Ordering code
12,7 mm	12,5 mm	3,7 mm	5,8 mm	14BCV12.5-05-2
12,7 mm	25 mm	2,3 mm	3,2 mm	14BCV25-05-2
12,7 mm	30 mm	1,3 mm	2,5 mm	14BCV30-05-2
12,7 mm	50 mm	2,6 mm	3 mm	14BCV50-05-2
12,7 mm	75 mm	2,7 mm	3 mm	14BCV75-05-2
12,7 mm	100 mm	2,8 mm	3 mm	14BCV100-05-2
25,4 mm	25 mm	4,2 mm	10,2mm	14BCV25-1-2
25,4 mm	50 mm	4,2 mm	6 mm	14BCV50-1-2
25,4 mm	75 mm	3,8 mm	5 mm	14BCV75-1-2
25,4 mm	100 mm	3,6 mm	4,5mm	14BCV100-1-2
25,4 mm	150 mm	3,9 mm	4,5mm	14BCV150-1-2
25,4 mm	200 mm	3 mm	3,9mm	14BCV200-1-2

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