lec20 - . O I The Thin Lens Equation Assuming the object is...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Lenses Lenses alter the direction of light rays due to refraction of at the lens surfaces. The surfaces are usually spherical. There are two types of lenses: Thin lenses have focal length much larger than their thickness. (i.e. the radius of curvature of lens surfaces are large compared with lens size). Thin lenses have sharp, well defined focal points. Images formed by converging lenses Images formed by diverging lenses Diverging lens . F F . f Converging lens . . F f F . . F F O I real image inverted F F . . O I virtual image up-right Diverging lenses form only virtual images F’ F .
Background image of page 1

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

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: . O I The Thin Lens Equation Assuming the object is located to the left of the lens: Thin lens equation Magnification equation Sign convention (for single lens system) f d i d o F F . . O I h o h i i o d 1 d 1 f 1 + = o i o i d d h h m = = f : + for converging lenses; - for diverging lenses d o : + for object located to the left of the lens d i : + for real image formed to the right of the lens- for virtual image formed to the left of the lens h o , h i : + above principal axis; - below principal axis...
View Full Document

Page1 / 2

lec20 - . O I The Thin Lens Equation Assuming the object is...

This preview shows document pages 1 - 2. Sign up to view the full document.

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