Plano-Concave Cylindrical Lenses, N-BK7, Uncoated

OVERVIEW

Uncoated Plano-Concave Cylindrical Lenses^a
Material		N-BK7
Uncoated Wavelength Range^b		350 nm - 2.0 µm
Design Wavelength		587.6 nm
Length Tolerance		+0.00 / -0.10 mm
Height Tolerance		+0.00 / -0.10 mm
Center Thickness Tolerance		±0.2 mm
Focal Length Tolerance		±1%
Surface Quality		60-40 Scratch/Dig
Centration		For f ≤50 mm: ≤5 arcmin For f >50 mm: ≤3 arcmin
Surface Flatness (Plano Side)	Height	λ/2
Surface Flatness (Plano Side)	Length	λ/2
Cylindrical Surface Power^c (Concave Side)	Height	3λ/2
Cylindrical Surface Power^c (Concave Side)	Length	3λ/2
Surface Irregularity (Peak to Valley)	Height (Plano, Curved)	λ/4, λ
Surface Irregularity (Peak to Valley)	Length (Plano, Curved)	λ/4, λ/cm
Clear Aperture		>90% of Surface Dimensions

These lenses are also available with a -A, -B, or -C antireflection coating.
Uncoated Wavelength Range: 350 nm - 2.0 µm
Much like surface flatness for flat optics, surface power is a measure of the deviation between the surface of the curved optic and a calibrated reference gauge, typically for a 633 nm source, unless otherwise stated. This specification is also commonly referred to as surface fit.

Features

Made of N-BK7 Glass
Uncoated Wavelength Range: 350 nm - 2.0 µm
Focal Lengths from -3.9 mm to -1000.0 mm
Focal Length Tolerance: ±1%

Negative cylindrical lenses act as plano-concave spherical lenses, except on only one axis. These lenses are used in applications that require one dimensional shaping of a light source. A typical application is to use a single cylindrical lens to turn a collimated laser into a line generator. Pairs of cylindrical lenses may be used to anamorphically shape images. To minimize the introduction of abberation, the curved surface of the lens should face the source when used to diverge a beam.

For cage system and lens tube compatibility, please see our Mounted Plano-Concave Round Cylindrical lenses. These lenses are typically easier to integrate into our standard optomechanics.

Plano-Concave Cylindrical Lens Selection Guide
Substrate	N-BK7	UV Fused Silica	N-BK7(Round)
AR Coating Range	Uncoated 350 - 700 nm 650 - 1050 nm 1050 - 1620 nm	Uncoated 290 - 370 nm	Uncoated 350 - 700 nm 650 - 1050 nm 1050 - 1620 nm

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GRAPHS

All cylindrical lenses can be ordered uncoated and the cylindrical lenses made from N-BK7 can be ordered with one of the following broadband AR coatings:
-A: 350-700 nm, -B: 650-1050 nm or -C:1050-1620 nm

These high performance multilayer AR coatings reduce surface reflections to less than 1% (per surface) within the specified wavelength ranges. The central peak in each curve is less than 0.25%. These coatings are designed for angles of incidence between 0 and 30 degrees (0.5 NA). For optics intended to be used at large angles, consider using a custom coating optimized at a 45 degree angle of incidence; these coatings are effective from 25 to 52 degrees. The plot shown below indicates the performance of the standard coatings in this family as a function of wavelength. Broadband coatings have a typical absorption of 0.25%, not shown in the reflectivity plots.

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Click Here for Raw Data

Hide Plano-Concave Cylindrical Lenses, N-BK7, Uncoated (f=-3.9 to -25.4 mm)

Plano-Concave Cylindrical Lenses, N-BK7, Uncoated (f=-3.9 to -25.4 mm)

Item #	Focal Length^a	Length	Height	Radius	Center Thickness	Edge Thickness	Back Focal Length
LK1395L1	-3.9 mm	6.0 mm	4.0 mm	-2.0 mm	2.0 mm	2.7 mm	-5.2 mm
LK1597L2	-4.0 mm	8.0 mm	4.0 mm	-2.1 mm	2.0 mm	2.6 mm	-5.3 mm
LK1523L1	-5.8 mm	6.0 mm	4.0 mm	-3.0 mm	2.0 mm	2.4 mm	-7.1 mm
LK1087L1	-6.4 mm	8.0 mm	6.0 mm	-3.3 mm	2.0 mm	3.2 mm	-7.7 mm
LK1087L2	-6.4 mm	12.0 mm	6.0 mm	-3.3 mm	2.0 mm	3.2 mm	-7.7 mm
LK1363L2	-7.7 mm	14.0 mm	7.0 mm	-4.0 mm	2.0 mm	3.4 mm	-9.0 mm
LK1836L1	-9.7 mm	12.0 mm	10.0 mm	-5.0 mm	2.0 mm	4.8 mm	-11.0 mm
LK1836L2	-9.7 mm	20.0 mm	10.0 mm	-5.0 mm	2.0 mm	4.8 mm	-11.0 mm
LK1684L1	-12.7 mm	12.0 mm	10.0 mm	-6.6 mm	2.0 mm	3.8 mm	-14.0 mm
LK1816L1	-13.7 mm	15.0 mm	13.0 mm	-7.1 mm	2.0 mm	5.3 mm	-15.0 mm
LK1753L1	-15.0 mm	12.0 mm	10.0 mm	-7.8 mm	2.0 mm	3.4 mm	-16.3 mm
LK1037L1	-19.0 mm	21.0 mm	19.0 mm	-9.8 mm	2.0 mm	7.9 mm	-20.3 mm
LK1085L1	-20.0 mm	17.0 mm	15.0 mm	-10.3 mm	2.0 mm	4.7 mm	-21.3 mm
LK1085L2	-20.0 mm	30.0 mm	15.0 mm	-10.3 mm	2.0 mm	4.7 mm	-21.3 mm
LK1006L1	-22.2 mm	15.0 mm	12.5 mm	-11.5 mm	2.0 mm	3.5 mm	-23.5 mm
LK1426L1	-25.0 mm	12.0 mm	10.0 mm	-12.9 mm	2.0 mm	2.8 mm	-26.2 mm
LK1900L1	-25.4 mm	18.0 mm	16.0 mm	-13.1 mm	2.0 mm	4.4 mm	-26.7 mm

All focal lengths are specified at the design wavelength (587.6 nm). Since the index of refraction for N-BK7 is inversely proportional to the wavelength, the focal length of each lens becomes longer (more negative) with increasing wavelength.

Part Number	Description	Price	Availability
LK1395L1	f=-3.9 mm, H=4.0 mm, L=6 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$44.00	Today
LK1597L2	f=-4 mm, H=4.0 mm, L=8 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$50.30	Today
LK1523L1	f=-5.8 mm, H=4.0 mm, L=6 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$44.00	Today
LK1087L1	f=-6.4 mm, H=6.0 mm, L=8 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$49.56	Today
LK1087L2	f=-6.4 mm, H=6.0 mm, L=12 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$58.60	Today
LK1363L2	f=-7.7 mm, H=7.0 mm, L=14 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$58.70	Today
LK1836L1	f=-9.7 mm, H=10 mm, L=12 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$60.80	Today
LK1836L2	f=-9.7 mm, H=10 mm, L=20 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$71.04	Today
LK1684L1	f=-12.7 mm, H=10 mm, L=12 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$49.25	Today
LK1816L1	f=-13.7 mm, H=13 mm, L=15 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$57.65	Today
LK1753L1	f=-15 mm, H=10 mm, L=12 mm, N-BK7 Plano-Concave Cylindrical Lens. Uncoated	$50.30	Today
LK1037L1	f=-19 mm, H=19 mm, L=21 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$73.29	Today
LK1085L1	f=-20 mm, H=15 mm, L=17 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$62.90	Today
LK1085L2	f=-20 mm, H=15 mm, L=30 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$76.19	Today
LK1006L1	f=-22 mm, H=12.5 mm, L=15 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$56.60	Today
LK1426L1	f=-25 mm, H=10 mm, L=12 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$50.30	Today
LK1900L1	f=-25.4 mm, H=16 mm, L=18 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$64.89	Today

Hide Plano-Concave Cylindrical Lenses, N-BK7, Uncoated (f=-30 to -80 mm)

Plano-Concave Cylindrical Lenses, N-BK7, Uncoated (f=-30 to -80 mm)

Item #	Focal Length^a	Length	Height	Radius	Center Thickness	Edge Thickness	Back Focal Length
LK1982L1	-30.0 mm	22.0 mm	20.0 mm	-15.5 mm	2.0 mm	5.3 mm	-31.3 mm
LK1982L2	-30.0 mm	40.0 mm	20.0 mm	-15.5 mm	2.0 mm	5.3 mm	-31.3 mm
LK1325L1	-38.12 mm	28.0 mm	26.0 mm	-19.7 mm	2.0 mm	6.8 mm	-39.4 mm
LK1283L1	-40.0 mm	12.0 mm	10.0 mm	-20.7 mm	2.0 mm	2.5 mm	-41.3 mm
LK1662L1	-50.0 mm	22.0 mm	20.0 mm	-25.8 mm	2.0 mm	3.8 mm	-51.3 mm
LK1336L1	-50.0 mm	32.0 mm	30.0 mm	-25.8 mm	2.0 mm	6.5 mm	-51.3 mm
LK1792L1	-50.8 mm	53.0 mm	50.8 mm	-26.4 mm	2.0 mm	19.9 mm	-52.3 mm
LK1995L1	-60.0 mm	32.0 mm	30.0 mm	-31.0 mm	2.0 mm	5.6 mm	-71.3 mm
LK1913L1	-70.0 mm	32.0 mm	30.0 mm	-36.2 mm	2.0 mm	5.2 mm	-71.3 mm
LK1431L1	-75.0 mm	53.0 mm	50.8 mm	-38.8 mm	2.0 mm	11.1 mm	-76.3 mm
LK1526L1	-80.0 mm	22.0 mm	20.0 mm	-41.3 mm	3.0 mm	4.1 mm	-82.0 mm

All focal lengths are specified at the design wavelength (587.6 nm). Since the index of refraction for N-BK7 is inversely proportional to the wavelength, the focal length of each lens becomes longer (more negative) with increasing wavelength.

Part Number	Description	Price	Availability
LK1982L1	f=-30 mm, H=20 mm, L=22 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$75.39	Today
LK1982L2	f=-30 mm, H=20 mm, L=40 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$93.99	Today
LK1325L1	f=-38.1 mm, H=26 mm, L=28 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$87.80	Lead Time
LK1283L1	f=-40 mm, H=10 mm, L=12 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$50.30	Today
LK1662L1	f=-50 mm, H=20 mm, L=22 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$75.39	Today
LK1336L1	f=-50 mm, H=30 mm, L=32 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$102.69	Today
LK1792L1	f=-50.8 mm, H=50.8 mm, L=53 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$157.08	Today
LK1995L1	f=-60 mm, H=30 mm, L=32 mm, BK7 Plano-Concave Cylindrical Lens, Uncoated	$48.90	Today
LK1913L1	f=-70 mm, H=30 mm, L=32 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$97.80	Today
LK1431L1	f=-75 mm, H=50.8 mm, L=53 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$157.08	Today
LK1526L1	f=-80 mm, H=20 mm, L=22 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$75.39	Today

Hide Plano-Concave Cylindrical Lenses, N-BK7, Uncoated (f=-100 to -1000 mm)

Plano-Concave Cylindrical Lenses, N-BK7, Uncoated (f=-100 to -1000 mm)

Item #	Focal Length^a	Length	Height	Radius	Center Thickness	Edge Thickness	Back Focal Length
LK1743L1	-100.0 mm	32.0 mm	30.0 mm	-51.7 mm	3.0 mm	5.1 mm	-102.0 mm
LK1936L1	-100.0 mm	90.0 mm	100.0 mm	-51.7 mm	3.0 mm	39.9 mm	-102.0 mm
LK1419L1	-150.0 mm	32.0 mm	30.0 mm	-77.5 mm	3.0 mm	4.4 mm	-152.0 mm
LK1069L1	-200.0 mm	32.0 mm	30.0 mm	-103.4 mm	3.0 mm	4.0 mm	-202.0 mm
LK1030L1	-250.0 mm	32.0 mm	30.0 mm	-129.2 mm	3.0 mm	3.8 mm	-252.0 mm
LK1487L1	-400.0 mm	32.0 mm	30.0 mm	-206.7 mm	3.0 mm	3.5 mm	-402.0 mm
LK1002L1	-1000.0 mm	32.0 mm	30.0 mm	-516.8 mm	3.0 mm	3.2 mm	-1002.0 mm

Since the index of refraction for N-BK7 is inversely proportional to the wavelength, the focal length of each lens becomes longer (more negative) with increasing wavelength.

Part Number	Description	Price	Availability
LK1743L1	f=-100 mm, H=30 mm, L=32 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$102.69	Today
LK1936L1	f=-100 mm, H=100 mm, L=90 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$269.30	Today
LK1419L1	f=-150 mm, H=30 mm, L=32 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$102.69	Today
LK1069L1	f=-200 mm, H=30 mm, L=32 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$102.69	Today
LK1030L1	f=-250 mm, H=30 mm, L=32 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$102.69	Today
LK1487L1	f=-400 mm, H=30 mm, L=32 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$102.69	Today
LK1002L1	f=-1000 mm, H=30 mm, L=32 mm, N-BK7 Plano-Concave Cylindrical Lens, Uncoated	$102.69	Today