ThinLense1

ThinLense1 - Thin Lens Light refracts on the interface of...

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1 Thin Lens Light refracts on the interface of two media, following Snell’s law of refraction: Light bends through a triangular prism: θ 1 and θ 2 are both with respect to the normal of the interface. The parameters n 1 and n 2 are call the index of medium 1 and 2 respectively. 2 2 1 1 sin in θ n s n = Medium 1 Medium 2 θ 1 θ 2 Light converges
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2 Thin Lens Light bends through an upside-down triangular prism: Light diverges The back traces of the diverging light meet at one point.
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3 Thin lens Converging thin lens: All light rays parallel to the principal axis meet at the focal point on the other side of the lens (far focal point). The focal points on either side of the lens are equal distance from the center of the lens. This distance is called the focal length and it is a positive value. It is considered that the thin lens has no thickness. And it is of represented by a double out-going arrowed line. Converging thin lens
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4 Thin lenses Diverging thin lens: All light rays parallel to the principal axis diverge, but their back traces meet at the focal point on the same side of the lens (near focal point).
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This note was uploaded on 05/06/2008 for the course PHYS 1304 taught by Professor Ye during the Spring '08 term at SMU.

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ThinLense1 - Thin Lens Light refracts on the interface of...

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