Large Plano-Convex Cylindrical Lenses

Large-aperture plano-convex cylindrical lenses for line and sheet illumination.

Product Overview

Large plano-convex cylindrical lenses have one flat surface and one convex cylindrical surface over a specified aperture.

They provide positive power in one direction for line focusing or one-axis collimation, with aperture selected to accommodate the incident beam.

Material, aperture, center thickness, cylindrical radii, axis orientation and coating requirements can be specified to your drawings, subject to manufacturing review.

Applications

Machine Vision & Profile Measurement: Focusing larger-aperture laser beams into lines for optical triangulation and surface-profile measurement.
Line-Scan Inspection Illumination: Concentrating light in one direction to illuminate a narrow inspection region on moving materials.
Particle Imaging & Flow Research: Forming light-sheet illumination with other optics to illuminate a selected plane of a seeded flow.
Laser Beam Delivery Modules: Focusing or collimating one beam axis when a larger clear aperture is needed to avoid clipping.
Spectroscopy & Analytical Equipment: Focusing light in one direction toward an elongated spectrometer slit.

Typical Specifications

Parameter	Standard Grade	Precision Grade
Materials	N-BK7, Quartz, CaF₂, MgF₂, ZnSe, ZnS, and other optical glass upon request	N-BK7, Quartz, CaF₂, MgF₂, ZnSe, ZnS, and other optical glass upon request
Diameter	5–300 mm	5–300 mm
Diameter Tolerance	+0 / −0.10 mm	+0 / −0.02 mm
Center Thickness Tolerance	±0.10 mm	±0.02 mm
Radius of Curvature Tolerance	±0.5%–±1%	±0.1%
Surface Figure	λ/4 @ 632.8 nm	λ/10 @ 632.8 nm
Surface Quality (Scratch–Dig)	40–20	20–10 / 10–5
Surface Roughness (Ra)	≤1.0 nm	≤0.3 nm
Centration Error	<3′	<30″
Angle / Wedge	1′–5′	1″–10″
Coating	AR / HR, etc., to customer requirements	AR / HR, etc., to customer requirements

Other specifications, materials, and coatings are available upon request.