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L6-21. Optical Board - Diverging Spherical Lens
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L6-21. Optical Board - Diverging Spherical Lens
Purpose
To determine the focal point of a concave lens.
Equipment
Optical board with diverging lens, convex and concave lens to produce parallel rays.
Images
Description
Parallel rays incident on a diverging plano-concave spherical lens appear to emanate from the focal point of the lens. Two diverging lenses can be placed together to increase the divergence and decrease the focal length. A slit baffle with concave and convex lenses are used to create the set of parallel rays, which can be varied in number and in spacing.
References
Alex J. Dragt, Lie Albegraic Theory of Geometrical Optics and Optical Aberrations, Journal of the Optical Society of America 72,372-379.
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See pagesl1. light sources & light rays
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See pagesl2. plane mirrors
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See pagesl3. curved mirrors
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See pagesl4. refraction
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See pagesl5. total internal reflection
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See pagesl6. lenses
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See pagesl7. optical instruments
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See pagesl1. light sources & light rays
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See pagesl2. plane mirrors
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See pagesl3. curved mirrors
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See pagesl4. refraction
-
See pagesl5. total internal reflection
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See pagesl6. lenses
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See pagesl7. optical instruments
Physics Lab Demos