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Optics Bench
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How to Use this Applet
This applet allows users to simulate standard optical elements (lens, mirror, dielectrics, sources,
and apertures) and observe how light rays propagate through these elements.
Lens
Click on Lens to place a lens on the optical bench. Click on the
location where you want the lens to be located. To make changes to the
lens you must first make it the active element by clicking on it. You can
change the location of the lens by click-dragging the lens to a new
location. You can change the focal length of the lens by click-dragging on
the focal points. To remove the lens, click on the lens to make it the
active element, and then click on Clear Active.
Object
Click on Object to add an object to the optical bench. Click on
the location where you want the object to be located. You can change the
height of the object by click-dragging the object vertically up, or down,
and the position can be changed by click-dragging it horizontally. To
remove the object, click on the object to make it the active element, and
then click on Clear Active.
Source
Click on Source to add a source to the optical bench. Click on
the location where you want the source to be located. You can change the
position of the source by click-dragging it to a new location. You can
change the size of the cone of rays emanating from the source by
click-dragging the dot located on the top ray.
Beam
Click on Beam to add a beam to the optical bench. Click on the
location where you want the beam to be located. You can change the
position of the beam by click-dragging it to a new location. You can
change the direction of the beam of rays by click-dragging the dot located
on the middle ray.
Aperture
Click on Aperture to add an aperture (stop) to the optical
bench. Click on the location where you want the aperture to be located.
You can change the position of the aperture by click-dragging it to a new
location. You can change the size by click-dragging on one of the dots
located on the periphery of the inside of the aperture.
Mirror
Click on Mirror to place a mirror on the optical bench. Click on
the location where you want the mirror to be located. To make changes to
the mirror you must first make it the active element by clicking on it.
You can change the location of the mirror by click-dragging the mirror to
a new location. You can change the focal length of the mirror by
click-dragging on the focal points. To remove the mirror, click on the
mirror to make it the active element, and then click on Clear Active.
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