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Optics
Working Human Eye Model
P Classic eye model at an affordable price
P 3-dimensional working model of the human eye
Features
Working Model of the Human Eye: Two lenses are used to form images
on the retina. Sealed tank holds water to simulate the vitreous humor.
Study the Optics of Normal Vision and Vision Correction:
Use the included plastic lenses to create images for normal vision,
far-sightedness, near-sightedness and astigmatism. Additional
lenses are placed in front of the eye to correct for vision problems.
Fixed Corneal Lens and Interchangeable Crystalline Lens:
The crystalline lens is surrounded by water (vitreous humor). By changing
the crystalline lens, the eye can focus on both near and far objects.
Moveable Retina: Three positions to demonstrate near-sightedness,
far-sightedness and normal vision.
Variable Pupil Size: Students can observe the change in
brightness and clarity of the image as the pupil size is reduced.
Image of
crossed
arrow target
is focused on
the retina.
Water Filled
The water
acts like the
vitreous
humor.
Reading
glasses are
put in front
of the eye to
focus on a
close object.
Retina
Three positions
for near-sighted,
far-sighted and
normal vision.
Crystalline Eye Lens
Interchangeable lenses
to focus on near and
far objects.
Additional slots
for pupil and
asymmetric lens.
Basic Optics Light Source
Plastic Eyeball
Holds water to
simulate the
vitreous humor.
Adjustable Focal Length Lens
OS-8494
Order Information:
Adjustable Focal Length Lens ........................................................OS-8494
Shown in use with:
Human Eye Model ....................................................................................OS-8477
Eyeglass
Lens Slots
Change to
correct vision.
Corneal Lens
Fixed glass lens.
Use the syringe to adjust the amount of water in the lens.
Changing the curvature of the clear flexible membranes
changes the focal length of the lens.
Demonstrate
Retina
accommodation:
Show how the
eye lens changes
focal length by
changing its surface
curvature.
See page 103 for more
information.
Human
Eye
Model
Includes
Syringe
Tubing
Lenses (2)
Shown in use with Basic Optics
Bench (see page 100) and the
OS-8469 Eye Model Bracket.
The bracket holds the Eye
Model securely on the track at
the correct optical height.
The use of the optics track
simplifies distance
measurements and keeps
the components aligned.
OS-8477 Includes
Molded Plastic Eyeball
Plastic Lenses
(2 sets of 6)
Pupil Aperture
Retina Screen
Experiment Manual Included
Order Information:
Human Eye Model ................................................................................. OS-8477
Recommended:
Basic Optics System ............................................................................ OS-8515C
Eye Model Bracket ................................................................................ OS-8469
Adjustable Focal Length Lens ....................................................... OS-8494
104
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