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Lens imaging distortions (barrel and cushion) and coma

Lens imaging distortions (barrel and cushion) and coma

VP5.1.3.3

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