1. 4/28/06 Image Sensors & The Eye Fiber Optics CD’s & DVD’s (if time) Monday: Finish off Section 15.2 Course Wrap-up Exam 3 discussion Poster Session: 2 – 5 pm Wednesday: HW 8 due by 5 pm Friday 1 pm: Josi/Michelle 2 pm: Chris G./Zach Put Poster together – Sunday afternoon 3 – 6 pm

2. Image Sensors

5. Law of Reflection: “Angle of Incidence = Angle of Reflection” Law of Refraction “Snell’s Law”:

6. Refraction Example: A light ray starts in a medium with index of refraction n 1 and goes into a medium with index of refraction n 2. The angle of incidence is  1. The angle of refraction (transmission) is  2. a) If n 1 < n 2, where is the light ray traveling fastest? b) If n 1 < n 2, which is larger,  1 or  2 ? c) A beam of light is incident on the interface between plastic ( n = 1.3) and air with a 40 o angle as shown. What is the angle of the refracted ray? 40 o plastic air

7. Total Internal Reflection:

8. Application: Total Internal Reflection and Fiber Optics