Why Lenses Sometimes Form Upside-Down Inages... But Not Always @edmundoptics

Uploaded January 2025 | Updated September 2026, 2 weeks ago

Why do lenses sometimes form upside-down images, but not all the time?

This quick, simple explanation introduces some of the fundamentals of how lenses work

The drawing in this video clearly isn't perfectly to scale, but its intention is to make the main point of the video clear

What other kinds of optics demos would you like to see? Please let us know if you have any suggestions

#Optics #STEM #Science #Photonics #Engineering #Physics

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$The Magic of GRIN Lenses GRIN lenses bend light completely differently than normal lenses Rather than using curved surfaces, the material of the lens itself changes gradually throughout the lens This causes refraction (the bending of light) to not just be done at the lens surfaces, but all throughout the inside of the lens GRIN lenses can be much smaller than normal lenses, resulting in very compact and lightweight optical systems Edmund Optics sells a wide variety of both conventional and GRIN lenses for all kinds of optical applications #optics #science #stem #physics #engineering #photonics #lens$