Mounted Plano-Concave Round Cylindrical Lenses
| Specifications |
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| Material | N-BK7 | Broadband AR Coating
(Ravg <0.5%) | Uncoated: 350 nm - 2.0 µm
-A: 350 nm - 700 nm
-B: 650 nm - 1050 nm
-C: 1050 nm - 1620 nm | | Design Wavelength | 587.6 nm | | Diameter Tolerance | +0.00/-0.10 mm | | Focal Length Tolerance | ±1% | | Surface Quality | 60-40 Scratch-Dig | | Centration | ≤3 arcmin | | Surface Flatness | λ/2 | | Cylindrical Surface Power* | 3λ/2 | Surface Irregularity
(Peak to Valley) | Plano | λ/2 | | Curved (Height, Length) | λ, λ | | Clear Aperture | >90% of Diameter |
*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- Round Geometry Enables Easy Mounting and Adjustment
- Pre-Mounted and Aligned in an Engraved, Black Anodized Aluminum Ring
- Full Contact Between Mounting Cell and Retaining Rings
- Fabricated from N-BK7 Glass
- Focal Lengths from -50 mm to -1000 mm Available
- SM1 Lens Tube Compatible
- Collimates & Cirularizes the Output of a Laser Diode
Like our N-BK7 plano-concave cylindrical lenses, these Ø1" negative round cylindrical lenses can be used to expand light but only in one dimension. However, they have the added advantage that they are epoxied into a round cell, allowing them to be mounted in our SM1 Lens Tubes or any Ø1" Lens Mounts. The cell is black anodized and engraved with the part number, focal length, and coating information (if applicable). The wall thickness is designed to allow full contact with the cylindrical lens when using an SM1RR retaining ring to hold the lens. One possible application is to use these lenses to convert a collimated laser source into a line generator. Alternatively, pairs of cylindrical lenses can be used for anamorphic beam shaping. When used to diverge light from a line source, the curved surface should face the source to limit the effects of aberrations. |
| Item #* | Focal
Length** | BackFocal
Length | Radius | Center
Thickness | Length | Working
Distance | Reference
Drawing |
|---|
| LK1336RM | -50 mm | -51.3 mm | -25.8 mm | 2.0 mm | 8.26 mm | -50.0 mm |  | | LK1431RM | -75 mm | -76.3 mm | -38.8 mm | 2.0 mm | 5.84 mm | -75.0 mm | | LK1743RM | -100 mm | -102.0 mm | -51.7 mm | 3.0 mm | 5.84 mm | -100.6 mm | | LK1419RM | -150 mm | -152.0 mm | -77.5 mm | 3.0 mm | 5.84 mm | -150.6 mm | | LK1069RM | -200 mm | -202.0 mm | -103.4 mm | 3.0 mm | 5.84 mm | -200.6 mm | | LK1487RM | -400 mm | -402.0 mm | -206.7 mm | 3.0 mm | 5.84 mm | -400.6 mm | | LK1002RM | -1000 mm | -1002.0 mm | -516.8 mm | 3.0 mm | 5.84 mm | -1000.6 mm |
*For AR-coated lenses, the same radius of curvature and center thickness applies as listed above for the uncoated version.
**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 increases with increasing wavelength.
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All of our round cylindrical lenses can be ordered uncoated or 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 have an average reflectance of less than 0.5% (per surface) across the specified wavelength ranges. The central peak in each curve is less than 0.25%. These coatings are designed for use with angles of incidence (AOI) between 0 and 30 degrees (0.5 NA). For optics intended to be used with larger incident angles, consider using a custom coating optimized for a 45 degree AOI; these coatings are effective for use with angles of incidence between 25 and 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%, which is not shown in the reflectivity plots.
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Additional Cylindrical Lenses
Plano-Convex, N-BK7, Uncoated
Plano-Convex, N-BK7, AR Coated: 350-700 nm
Plano-Convex, N-BK7, AR Coated: 650-1050 nm
Plano-Convex, N-BK7, AR Coated: 1050-1620 nm
Plano-Concave, N-BK7, Uncoated
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Plano-Concave, N-BK7, AR Coated: 350-700 nm
Plano-Concave, N-BK7, AR Coated: 650-1050 nm
Plano-Concave, N-BK7, AR Coated: 1050-1620 nm
Plano-Convex, UV Fused Silica
Plano-Concave, UV Fused Silica
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Plano-Convex, Round, N-BK7
Plano-Concave, Round, N-BK7
Acylindrical Lenses
Cylindrical Achromatic Doublets
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