Optics Hickenbotham Flashcards
The ray from an object that is incident on the system pointing towards the center of the entrance pupil.
Chief Ray
The ray that just passes the edge of the aperture stop.
Marginal ray
Physical entity most effective at limiting the field of view…
Field stop
What limits the light…
Aperture stop
What is the plateau area that holds the same amount of light?
Field of uniform illumination
field of at least one half illumination is also the:
Field of view
What lines make the full illumination?
Top of Field stop to top of aperture stop and chief ray
What lines make the field of view? (field of at least one half illumination)
Top of field stop to center of aperture stop and chief ray
Total field of view uses what lines?
Top of field stop to bottom of the aperture stop and chief ray
What is eye relief?
Distance from where you are putting your own entrance pupil… so the exit pupil of the system lines up on your cornea
The distance from the last surface of an eyepiece at which the user’s eye can obtain the full viewing angle.
Eye relief
IF the viewer is outside of the distance a _________ field of view will be seen.
reduced
True/False: Generally the higher the magnification and the larger the intended field of view, the longer the eye relief.
False, Shorter the eye relief
What is a Fall off in illumination for points away from the optical axis. (Fading on the outside edges of a picture)
Farther away from optical axis the more the eye drops off…
Vignetting
