Plano-Convex & Plano-Concave Glass Focusing Lens

This series of focusing lenses are made of BK7 (LBK Series) or Fused Silica (LFS Series); light enters from one side and exits from the opposite side.

Its purpose is to modify the wavefront curvature of the light through the lens. Then, focus the laser beam onto a very small precise spot size so that it is widely used in engraving graphic images, welding metal pieces together or cutting various types of materials. We have different coatings and materials for different wavelength.

Specifications

Diameter Tolerance

+0/-0.13mm

Thickness Tolerance

±0.25mm

Focal Length Tolerance

±2%

Edge Thickness  Variation (ETV)

≤3 arc min.

Clear Aperture

>90%

Surface Flatness

λ/4 per 1″ Dia @632.8nm

Surface Quality

40-20 S-D / 20-10 S-D

AR Coating

R<0.2% per surface

Coating Options Available

260 – 400 nm
400 – 700 nm
750 – 110 nm
1000 – 1200 nm
1200 – 1600 nm

Air Spaced Series Glass Focusing Lens

The purpose of developing Air Spaced glass focusing lens is to minimize aberration and achieve the smallest spot size. The achromatic triplet focusing lenses are color corrected. Both working laser beam and inspection visible beam will focus on the same focus point or two closest ones.

Achromatic Cemented Series Glass Focusing Lens

These are cemented doublet lenses for 1064nm laser, as well as colour corrected for visible wavelength. They are made up of a combination of low dispersion crown glass and high dispersion flint glass. They are suitable for laser cutting and welding applications where a vision system is equipped.

Product TypePart NumberWavelength (nm)EFL (mm)Dia (mm)MaterialET (mm)WD (mm)AssemblyL x W (mm x mm)CT (mm)BFL (mm)
Plano-ConvexLBK-0.5-15-ET210641512.7BK72-Single-5.4211.40
Plano-ConvexLBK-0.5-20-ET210642012.7BK72-Single-4.2017.21
Plano-ConvexLBK-0.5-30-ET210643012.7BK72-Single-3.3927.75
Plano-ConvexLBK-0.5-50-ET210645012.7BK72-Single-2.8048.14
Plano-ConvexLBK-0.5-75-ET210647512.7BK72-Single-2.5073.34
Plano-ConvexLBK-0.5-100-ET2106410012.7BK72-Single-2.4098.41
Plano-ConvexLBK-0.5-120-ET2106412012.7BK72-Single-2.33118.45
Plano-ConvexLBK-0.5-140-ET2106414012.7BK72-Single-2.28138.48
Plano-ConvexLBK-0.5-160-ET2106416012.7BK72-Single-2.25158.51
Plano-ConvexLBK-1-35-ET210643525.4BK72-Single-7.2030.22
Plano-ConvexLBK-1-50-ET210645025.4BK72-Single-5.3046.48
Plano-ConvexLBK-1-60-ET210646025.4BK72-Single-2.5058.34
Plano-ConvexLBK-1-70-ET210647025.4BK72-Single-4.3567.11
Plano-ConvexLBK-1-75-ET210647525.4BK72-Single-4.1072.28
Plano-ConvexLBK-1-100-ET2106410025.4BK72-Single-3.6097.61
Plano-ConvexLBK-1-125-ET2106412525.4BK72-Single-3.30122.81
Plano-ConvexLBK-1-150-ET2106415025.4BK72-Single-3.00148.01
Plano-ConvexLBK-1-175-ET2106417525.4BK72-Single-2.90173.08
Plano-ConvexLBK-1-200-ET2106420025.4BK72-Single-2.80198.14
Plano-ConvexLBK-1-250-ET2106425025.4BK72-Single-2.60248.27
Plano-ConvexLBK-1-300-ET2106430025.4BK72-Single-2.50298.34
Plano-ConvexLBK-1-350-ET2106435025.4BK72-Single-2.46348.37
Plano-ConvexLBK-1-400-ET2106440025.4BK72-Single-2.40398.41
Plano-ConvexLBK-1-500-ET2106450025.4BK72-Single-2.30498.47
Plano-ConvexLBK-1-1000-ET21064100025.4BK72-Single-2.20998.54
Plano-ConvexLFS-1-35-ET21030-10903525.4Fused Silica2-Single-8.2029.56
Plano-ConvexLFS-1-50-ET21030-10905025.4Fused Silica2-Single-4.7046.88
Plano-ConvexLFS-1-75-ET21030-10907525.4Fused Silica2-Single-4.4072.08
Plano-ConvexLFS-1-100-ET21030-109010025.4Fused Silica2-Single-3.8097.48
Plano-ConvexLFS-1-125-ET21030-109012525.4Fused Silica2-Single-3.40122.74
Plano-ConvexLFS-1-150-ET21030-109015025.4Fused Silica2-Single-3.20147.88
Plano-ConvexLFS-1-200-ET21030-109020025.4Fused Silica2-Single-2.90198.08
Plano-ConvexLFS-1-250-ET21030-109025025.4Fused Silica2-Single-2.70248.21
Plano-ConvexLFS-1-300-ET21030-109030025.4Fused Silica2-Single-2.60298.27
Plano-ConvexLFS-1-500-ET21030-109050025.4Fused Silica2-Single-2.40498.41
Plano-ConvexLFS-1-1000-ET21030-1090100025.4Fused Silica2-Single-2.20998.54
Air Spaced FocusingYAGFL25106425.226Glass-19.5Triplet (mounted)---
Air Spaced Focusing
(Achromatic)
YAGFL25A10642521Glass-18.8Triplet (mounted)---
Air Spaced Focusing
(Achromatic)
YAGFL40A1064 / 6354036Glass-29.8Triplet (mounted)---
Air Spaced FocusingYAGFL47106446.441Glass-32.4Triplet (mounted)---
Air Spaced Focusing
(Achromatic)
YAGFL47A1064 / 6354746Glass-34.9Triplet (mounted)---
Air Spaced FocusingYAGFL5010645036Glass-39.3Triplet (mounted)---
Air Spaced Focusing (With Window)YAGFL50W10645036Glass-32.3Triplet (mounted)---
Air Spaced FocusingYAGFL58106458.241Glass-49Triplet (mounted)---
Air Spaced Focusing
(Achromatic)
YAGFL58A1064 / 6355841Glass-47.4Triplet (mounted)---
Air Spaced FocusingYAGFL66106465.834Glass-53.4Doublet (mounted)---
Air Spaced FocusingYAGFL7710647741Glass-67.9Triplet (mounted)---
Air Spaced Focusing
(Achromatic)
YAGFL77A1064 / 6357741Glass-70.2Triplet (mounted)---
Air Spaced FocusingYAGFL81106480.660Glass-64.5Triplet (mounted)---
Air Spaced FocusingYAGFL9010649041Glass-88.2Triplet (mounted)---
Air Spaced Focusing (With Window)YAGFL100W1064100.229Glass-86.9Doublet (mounted)---
Air Spaced FocusingYAGFL1201064121.641Glass-112.5Triplet (mounted)---
Air Spaced Focusing
(Achromatic)
YAGFL120A1064 / 63512060Glass-104.3Doublet (mounted)---
Air Spaced FocusingYAGFL125106412552Glass-114.4Triplet (mounted)---
Air Spaced FocusingYAGFL135106413552Glass-126Doublet (mounted)---
Air Spaced FocusingYAGFL1631064162.641Glass-155.4Doublet (mounted)---
Air Spaced FocusingYAGFL201106420160Glass-189.6Doublet (mounted)---
Air Spaced Focusing
(Achromatic)
YAGFL250A1064 / 635249.857Glass-237.6Doublet (mounted)---
Air Spaced Focusing532nmFL475324741Glass-29.8Triplet (mounted)---
Air Spaced Focusing532nmFL775327736Glass-66.4Doublet (mounted)---
Air Spaced Focusing532nmFL805328045Glass-63.1Triplet (mounted)---
Air Spaced Focusing532nmFL115532114.540Glass-107.8Doublet (mounted)---
Air Spaced Focusing532nmFL170532170.341Glass-124.8Doublet (mounted)---
Air Spaced Focusing532nmFL20053220038Glass-193.8Doublet (mounted)---
Air Spaced Focusing532nmFL271532270.641Glass-255.1Doublet (mounted)---
Air Spaced Focusing355nmFL92.635592.658Glass-84.1Doublet (mounted)---
Air Spaced Focusing355nmFL8635586.440Glass-65.1Doublet (mounted)---
Air Spaced Focusing355nmFL63.735563.736Glass-51.7Triplet (mounted)---
Air Spaced Focusing355nmFL603556040Glass-47.8Triplet (mounted)---
Air Spaced Focusing355nmFL4835548.234Glass-33.6Doublet (mounted)---
Air Spaced Focusing355nmFL47Q3554741Glass-32.7Triplet (mounted)---
Air Spaced Focusing355nmFL353553538Glass-22.8Triplet (mounted)---
Air Spaced Focusing355nmFL2535525.425Glass-16.1Triplet (mounted)---
Air Spaced Focusing355nmFL11535511540Glass-98.8Doublet (mounted)---
Air Spaced Focusing266nmFL242662427Glass-13.8Triplet (mounted)---
Air Spaced Focusing266nmFL4626646.323Glass-43.1Doublet (mounted)---
Air Spaced Focusing266nmFL5726657.340Glass-44.6Triplet (mounted)---
Air Spaced Focusing266nmFL8226682.448Glass-75.1Doublet (mounted)---
Air Spaced Focusing266nmFL11526611557Glass-103Doublet (mounted)---
Achromatic Cemented FocusingYAGFL-80-DA1064 / 450-7504180Glass12.3-Doublet (cemented)-18.9070.90
Achromatic Cemented FocusingYAGFL-100-DA1064 / 450-75041100Glass12.3-Doublet (cemented)-17.8089.50
Achromatic Cemented FocusingYAGFL-120-DA1064 / 450-75041120Glass12.3-Doublet (cemented)-16.80110.90
Achromatic Cemented FocusingYAGFL-148-DA1064 / 450-75041148Glass12.3-Doublet (cemented)-15.70140.20
Achromatic Cemented Focusing450-675NMFL100D450-67525100Glass6-Doublet (cemented)-7.9096.23
Achromatic Cemented Focusing450-675NMFL125D450-67525125Glass6-Doublet (cemented)-7.50121.50
Achromatic Cemented Focusing450-675NMFL150D450-67525150Glass5.9-Doublet (cemented)-7.20146.70
Achromatic Cemented Focusing450-675NMFL300D450-67525300Glass5.9-Doublet (cemented)-6.60297.10
Achromatic Cemented Focusing450-675NMFL350D450-67525350Glass5.9-Doublet (cemented)-6.50347.30
Achromatic Cemented Focusing450-675NMFL400D450-67525400Glass6-Doublet (cemented)-6.50398.10
Achromatic Cemented Focusing450-675NMFL75D450-6752575Glass5.9-Doublet (cemented)-8.5070.90

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