Optics 3

Optics 3 - What are the drawbacks of the camera obscura? A...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
What are the drawbacks of the camera obscura? A pinhole does not let much light through. If you make the pinhole larger, the sharpness is lost. How do we improve a pinhole?
Background image of page 1

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

View Full DocumentRight Arrow Icon
Imaging Every point of the object is a point source of light with the rays going in all possible directions. For every point of an object there are three principal rays emanating from it, which are especially convenient to trace. All rays originating from a point P of the object that go through the lens are also going through another point P’ behind the lens. This is the essence of imaging by the lens.
Background image of page 2
f l Three principal rays emanating from every point of the object: 1. Goes parallel to the axis of the lens on the front side and through the focal point on the back side. 2. Goes through the center of the lens and does not get refracted. 3. Goes through the focal point on the front side and parallel to the axis of the lens on the back side.
Background image of page 3

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

View Full DocumentRight Arrow Icon
away from the lens than the front focal point, l > f • The image is real – the light actually goes through the image location. • The image is inverted.
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/05/2011 for the course BILD 2 taught by Professor Schroeder during the Spring '08 term at UCSD.

Page1 / 18

Optics 3 - What are the drawbacks of the camera obscura? A...

This preview shows document pages 1 - 5. Sign up to view the full document.

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