Thick Plano-Convex Lenses

Custom thick plano-convex lenses manufactured to optical prescriptions and drawings.

Product Overview

Thick plano-convex lenses have one flat surface and one convex spherical surface with a specified increased center thickness.

They provide positive optical power; center thickness affects principal-plane positions and back focal length, so focal positioning should use the full optical prescription.

Material, dimensions, surface radii, focal length and coating requirements can be specified to your drawings, subject to manufacturing review.

Applications

Industrial Optical Instruments: Focusing or relaying light where the optical prescription calls for a specific thick plano-convex element and mounting envelope.
Illumination & Projection Equipment: Collecting source light as a condenser element, with thickness and curvature selected for the required focal position.
Optical Sensor Modules: Focusing light toward a detector while accounting for the thick lens back focal length and available working distance.
Optical Design & Laboratory Testing: Evaluating principal-plane position and focal location in thick-lens imaging or beam-conditioning experiments.

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.