### Optics Education Kits

Schematic of astigmatism

Schematic of field curvature

Schematic of distortion

Schematic of spherical aberration

## LEOK-5 Lens Aberration and Fourier Optics Kit

Features

• Lens Aberration Demonstration

• Fourier Optical Processing

• Easy Operation

• Cost Effective

Introduction

There are six basic optical aberrations affecting the ideal performance in an optical imaging system, which are chromatic aberration, spherical aberration, coma, distortion, curvature of field and astigmatism. Experiments based on this kit will help students familiarize with these aberrations. Optical lens can perform the Fourier transform to light field on object plane. Various spatial filtering techniques are used in the reconstruction of the filtered images based on Abbe’s theory of image formation. Students can get a better understanding of Fourier optics and spatial filtering through the proposed experiments. The instructional manual contains comprehensive materials including experimental setups, principles, procedures and required parts with photos.  Please click to view some sample pages of the instruction manual.

Examples of experiments:

Lens Aberrations: spherical aberration, field curvature, astigmatism, coma, distortion, and chromatic aberration

Fourier Optics and Spatial Filtering: low-pass filtering, high-pass filtering, and directional filtering.

 Description Specs/Part No. Qty Optical rail Aluminum 1 Laser holder SZ-42 1 Carrier General 3 Carrier X-translation 2 Carrier X-Z translation 2 Lens (DCX) f = 4.5, 85, 150, 225 mm 1 each Plano-convex lens (PCX) f =85 mm 1 He-Ne laser LLL-2 (>2.5 mW@632.8 nm) 1 Tungsten-Bromine lamp LLC-3 (12 V/30 W, variable) 1 Transmissive character 1 Iris diaphragm SZ-15 1 Adjustable slit SZ-40 1 White screen SZ-13 1 Optical filter Red and Blue 1 each Zero order filter 1 On/Off axis aperture plate 1 Plate holder SZ-12 1 Lens holder SZ-08 4 Adapter piece SZ-09 1 Millimeter ruler 3 cm 1

Schematic of astigmatism

Schematic of field curvature

Schematic of distortion

Schematic of spherical aberration