- 1. Mechanics
- 2. Harmonic Motion, Waves and Sound
- 3. Matter and Thermodynamics
- 4. Electricity and Magnetism
- 5. Light and Optics
- A. Geometrical Optics
- 10. Blackboard Optics
- 20. Image From a Lens or Mirror
- 30. Introducing the Laser
- 40. Lens Aberrations
- 50. Measuring a Glasses Prescription
- 60. Multiple Images in Mirrors
- 70. Projected Colors
- 80. Real and Virtual Image Illusions
- 90. Refraction
- 100. Sunset Colors from Scattering
- 110. Total Internal Reflection
- B. Interference and Diffraction
- C. Optical Instruments
- D. Polarization
- E. Spectra
- F. Speed of Light
- A. Geometrical Optics
- 6. Modern Physics
- 7. Astronomy
- 8. Software and Multimedia
- 9. Index and code conversion from older manual
- External Resources
Instructional Resource Lab
40. Lens Aberrations
A strongly converging lens shows obvious chromatic aberration. Another strongly converging lens is arranged so that the outer half of its diameter can be blocked (lens "stopped down"), or the inner half can be blocked (leaving an annular ring lens). The two arrangements have different focal lengths showing spherical aberration.
Other types of aberrations can be arranged with various lenses and mirrors.
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