By Michael P. Keating PhD
A easy optics textbook that integrates correct visible and ophthalmic optics fabric with simple geometric and actual optics. Dr. Keating's publication makes use of the vergence method of optics in addition to the wavefront method of vergence as an reduction to constructing optics instinct
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Additional resources for Geometric, Physical, and Visual Optics
Converging light forms a physically real image, b. Converging light is still leaving the system, but a brick wall stops formation of the physically real image. corresponding rays. These rays are of course converging and will pass through the center of curvature in those cases where the physically real image is formed. In the brick wall case, the rays are pointing toward the center of curvature when they are stopped by the wall, but the rays can still be extended straight ahead to locate the center of curvature.
The lens converges the light and a real image point is formed at F 2 on the axis behind the lens. 12. a. Plane waves incident on a converging lens resulting in waves that converge to the secondary focal point, b. Wavefronts and rays. c. Rays only. 13. a. Plane waves incident on a diverging lens resulting in diverging waves leaving, b. Wavefronts and rays showing the virtual secondary focal point, c. Rays only. lens. In order to get plane waves to leave the diverging lens, the incident light must be converging.
The position assigned to a virtual object point is at the center of curvature of the incident converging wavefront. Consequently, the position assigned to the virtual object is at the place toward which the incident light is converging. Whenever converging light leaves an optical system, the system is said to have an optically real image. ) The position assigned to an optically real image point is at the center of curvature of the exiting converging wavefront. Consequently, the position assigned to the optically real image is at the place toward which the exiting light is converging.