Lens imaging distortions (barrel and cushion) and coma

VP5.1.3.3
Lens imaging distortions (barrel and cushion) and coma
Lens imaging distortions (barrel and cushion) and coma

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Description

The experiment P5.1.3.3 explores aberrations of scale. Blocking light rays in front of the lens causes a barrel-shaped distortion, i. e. a reduction in the imaging scale with increasing object size. Screening behind the lens results in cushion-type aberrations. “Coma” is the term for one-sided, plume-like or blob-like distortion of the image when imaged by a beam of light passing through the lens at an oblique angle.

Components of equipment sets

1 45060  8  Lamp housing with cable LD
1 450511  8  Bulbs, 6 V/30 W, E14, set of 2 LD
1 46020  8  Condenser with diaphragm holder LD
1 521210  4  Transformer 6/12 V LD
1 46166  8  Objects for investigating images, pair LD
1 46002  8  Lens in frame, f=50 mm LD
1 46008  8  Lens in frame, f=150 mm LD
1 44153  8  Screen, translucent LD
1 460310  8  Optical bench, S1 profile, 1 m LD
2 460311  8  Clamp rider with clamp 45/65 LD
2 460312  8  Clamp rider with clamp 45/35 LD

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) P5.1.3.3 Lens imaging distortions (barrel and cushion) and coma
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