OPTI 201R 10 L29 - ! Entrance pupil : The stop or image of...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
OPTI 201R Fall 2010 29-1 9.1.2 Telecentric Pupil Location In a telecentric system, one or both of the pupils are located at infinity. ! Telecentric in object space " $%& &’$()’*& +,+-. -/ .0*)$&1 )$ - 2 - the chief ray is parallel to the axis in object space - the magnification is constant as the object moves in and out of focus - microscope objectives - optical systems used for metrology ! Telecentric in image space " $%& &3-$ +,+-. -/ .0*)$&1 )$ 42 - the chief ray is parallel to the axis in image space - the image size is constant even if the film or CCD moves ! Doubly telecentric infinity - the chief ray is parallel to the axis in object and image space Figure 9.5 Telecentric system in object and image space (doubly telecentric).
Background image of page 1

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

View Full DocumentRight Arrow Icon
OPTI 201R Fall 2010 29-2 9.1.3 Aperture Stop Determination ! The element that forms (becomes) the aperture stop within an optical system depends on the object location…. .?????!!
Background image of page 2
Background image of page 3

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

View Full DocumentRight Arrow Icon
Background image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ! Entrance pupil : The stop or image of the stop (in object space) that subtends the smallest angle from the axial point of the object is the entrance pupil. ! Exit pupil : The stop or image of the stop (in image space) that subtends the smallest angle from the axial point of the image is the exit pupil. ! Consider object points "A" and "B": Figure 9.6 Determining which surface is the aperture stop in object space. OPTI 201R Fall 2010 29-3 ! For object point "A", AS is the aperture stop. ! For object point "B", L 2 is the aperture stop. "The entrance pupil formed by the image of lens 2 (L 2 ) limits the ray bundle originating from an object at point 2, so for this object, distance lens L2 is the aperture stop." (pg. 235) OPTI 201R Fall 2010 29-4 Figure 9.7 The entrance pupil, exit pupil, and aperture are all conjugates. Figure 9.8 Two lenses without a given aperture stop; The aperture stop is object location dependent....
View Full Document

This note was uploaded on 08/23/2010 for the course OPTICS 201R taught by Professor Staff during the Spring '10 term at University of Arizona- Tucson.

Page1 / 4

OPTI 201R 10 L29 - ! Entrance pupil : The stop or image of...

This preview shows document pages 1 - 4. Sign up to view the full document.

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