Use of the mirror or lens equation is geared toward

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Unformatted text preview: ray bounces off mirror and becomes P ­ray 9. Ray tracing for lenses: P ­ray: parallel ray passes through lens and refract to focal point (easiest) M ­ray: straight ­line ray passes through lens with no deflection (recommended) F ­ray: focal point ray passes through lens and becomes P ­ray (unnecessary) 10. Use of the mirror or lens equation is geared toward finding di when do and f are known. The value of di refers to that location where a sharp image exists. 11. The power of a lens in diopters is given by P = 1/f, where f is in meters. 12. The eye is characterized by a distance di to the retina, and a changeable focal length. When the lens is completely relaxed, the eye can s...
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This document was uploaded on 03/26/2014.

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