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Basic Geometric Optics

Donald Unwin, MD

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	Slide 1. The "surface normal," perpendicular to the interface between two media.
	Slide 2. Light traveling from the medium of lesser refractive index at left into the medium of greater refractive index at right is bent closer to the "surface normal."
	Slide 3. Light traveling from the medium of greater refractive index at left into the medium of lesser refractive index at right is bent away from the "surface normal."
	Slide 4. Total internal reflection.
	Slide 5. Formula relates vergence in object space (U) to vergence in image space (V), after passage through lens (P).
	Slide 6. Primary focal point.
	Slide 7. Secondary focal point.
	Slide 8. Secondary focal point of a minus lens.
	Slide 9. Primary focal point of a minus lens.
	Slide 10. Secondary focal plane, where off-axis object at infinity will be focused.
	Slide 11. Primary focal plane.
	Slide 12. Primary and secondary focal points of a multiple lens system.
	Slide 13. Nodal points of a "thick" lens.