A question concerning lenses and the resulting images

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SUMMARY

The discussion centers on the behavior of light rays when an object is placed infinitely far from a convex, converging lens. In this scenario, the light rays are parallel to the principal axis, resulting in a real image that forms at the focal point. The magnification in this case is 0, indicating that if a screen is positioned at the focal point, it will display a single point of light, akin to the appearance of a star. The size of this point is influenced by the lens's aberrations.

PREREQUISITES
  • Understanding of convex lenses and their properties
  • Knowledge of optical principles such as focal points and magnification
  • Familiarity with lens aberrations and their effects on image quality
  • Basic grasp of light behavior and ray diagrams
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  • Study the principles of lens aberrations and their impact on image formation
  • Explore ray tracing techniques for convex lenses
  • Learn about the mathematical relationships governing magnification in optics
  • Investigate the differences between real and virtual images in optical systems
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Physics students, optical engineers, and anyone interested in understanding the principles of lens optics and image formation.

gsingh2011
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Imagine a situation where an object is placed infinitely far away from a convex, converging lens such that the light rays that come from the object are parallel to the principal axis. The real image forms at the focal point. In this situation, the magnification is 0, so if a screen was placed at the focal point where the image formed, would no image show up?
 
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Yes but it would be a single point (actually the size would be set by the aberations of the lens) - think of a star
 

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