{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

OPTI 201R 10 L16

# OPTI 201R 10 L16 - 16-1 6.2 Gaussian OpticsCardinal Points...

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

OPTI 201R Fall 2010 16-1 6.2 Gaussian Optics—Cardinal Points for a (Thin) Lens ! A lens (in general, any optical system) has 6 cardinal points: ! Each of these points lies on the optical axis. ! “Front” refers to the object-space (“input”) side of the surface or optical system (light traveling from left to right) ! “Back” refers to the image-space (“output”) side of the surface or optical system (light traveling from left to right) ! Essential in describing a “thick” (real) lens (Ch. 7) ! Useful in understanding a thin lens…. ! The cardinal points are the basis for understanding Gaussian imaging. front focal point F back focal point F * front principal point P back principal point P * front nodal point N back nodal point N *

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

View Full Document
OPTI 201R Fall 2010 16-2 ! “A ray from infinity and parallel to the axis in one space will refract (or reflect) into the adjacent space after passing through (or reflecting from) an optical surface.” ! “The focal point is defined as the point at which this refracted (reflected) ray crosses the optical axis.” parallel ray in object space ! image space of the surface ! F * parallel ray in image space ! object space of the surface ! F ! The principal plane is defined as the plane where this refraction (or reflection) takes place. ! In Gaussian optics, object and image distances are measured from the principal points.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 10

OPTI 201R 10 L16 - 16-1 6.2 Gaussian OpticsCardinal Points...

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

View Full Document
Ask a homework question - tutors are online