Images Formed by Lenses

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Presentation transcript:

Images Formed by Lenses Converging

How Do We See the World? Through a lens!!!

Converging & Diverging Lenses

Converging Lens Terminology F’ on same side as incident rays Two refractions occur Ray emerging from lens is called the EMERGENT RAY

Converging Lenses: Incident Rays & Emergent Rays Three Key Rays: 1. Incident light rays parallel to the PA refract through the principal focus (F)

Converging Lenses: Incident Rays & Emergent Rays Three Key Rays: 2. Incident light rays going through F’ refract parallel to the PA.

Converging Lenses: Incident Rays & Emergent Rays Three Key Rays: 3. Light rays that go in through O continues straight through; doesn’t refract

Converging Lenses: Finding Images Object beyond 2F’ F’ 2F’ F 2F image Refracted emergent Image forms where ____________________ rays cross

Putting it all Together Lens Simulation

Converging Lenses Finding Images - Practice Draw Ray Diagrams with the object at… 2F’ Between F’ and 2F’ At F’ In front of F’