MIT2_71S09_ups2 - MASSACHUSETTS INSTITUTE OF TECHNOLOGY...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: MASSACHUSETTS INSTITUTE OF TECHNOLOGY 2.71 Optics Spring 09 Problem Set #2 Posted Feb. 17, 2009 Due Wednesday, Feb. 25, 2009 1. Wiper speed control Design an optical system which can detect the amount of water present on a cars windshield (see the schematic above) to adjust the wiper speed. Use indices of refraction n glass = 1 . 5 ,n water = 1 . 33 ,n air = 1 . 0. Rain Drops Windshield 2. Telescope with infinite conjugates A parallel ray bundle of width a 1 and propagation angle 1 is incident from the left on a two-lens system composed of two positive lenses L1 (focal length f 1 > 0) and L2 (focal length f 2 > 0) as shown below. d 1 2 2 a a 1 L1 L2 a) Show that if the separation d between the two lenses equals the sum f 1 + f 2 of focal lengths, then a parallel ray bundle emerges from the system. b) What is the optical power of this composite optical system? What is the effective focal length? c) What are the propagation angle 2 and width a 2 of this outgoing ray bundle?of this outgoing ray bundle?...
View Full Document

Page1 / 4

MIT2_71S09_ups2 - MASSACHUSETTS INSTITUTE OF TECHNOLOGY...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online