O'Reilly logo

Handbook of Optical Design, 3rd Edition by Zacarías Malacara-Hernández, Daniel Malacara-Hernández

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

3

Systems of Several Lenses and Thick Lenses

3.1    FOCAL LENGTH AND POWER OF A LENS SYSTEM

The lateral magnification of a thick centered optical system in air, using the Lagrange theorem in Equation 1.64 and the definition of lateral magnification for a distant object, is given by

m=u1uk=y1l1uk,

(3.1)

assuming that the object and image media are the same (typically air).

The effective focal length of a thick lens or system of lenses is defined by

F=y1uk;

(3.2)

hence, the lateral magnification with a distant object depends only on the effective focal length F, independently of the particular lens configuration. With this definition, we may see from Figure 3.1 that the effective focal length is the distance from the focal plane ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required