Light and Optics – Optics of the Human Eye
Human Eye Model OS-8477
Blind Spot Retina
A C lassic Eye Model at an Affordable Price
Three positions for near-sighted, far-sighted and normal vision
Plastic Eyeball
Simulates retina attachment point
Holds water to simulate the vitreous humor
Crystalline Eye Lens
Interchangeable lenses to focus on near and far objects. Additional slots for pupil and asymmetric lens
A 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. Size and orientation of the illuminated object can be easily measured. 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.
Eyeglass Lens Slots Corneal Lens
Change to correct vision
Fixed glass lens
Pupil Aperture
The Eye Model can image any illuminated picture, or use with the Basic Optics System and Eye Model Bracket shown on page 313.
Includes:
Use the Pupil Aperture to reduce the pupil size, or to change the shape to a “cat’s eye”.
Specifications Focal Lengths in Air of Plastic Lenses: +62 mm (+16d), +120 mm (+8.3d), +400 mm (+2.5d), -1000 mm (-1.0d), -128 mm (-7.8d) cylindrical, +307 mm (+3.26d) cylindrical Corneal Lens Focal Length in Air: +140 mm (+7.1d) Dimensions: 15 cm x 17 cm x 10 cm high
312
Molded Plastic Eyeball Plastic Lenses (2 sets of 6) Pupil Aperture Retina Screen Optics Caliper (1) Experiment Manual Included Order Information: Human Eye Model................................................................................ OS-8477 Recommended: Basic Optics Light Source........................................................... OS-8470 p. 306 Human Eye Replacement Set (includes lenses, screen and pupil) .............................. OS-8476 Optics Caliper (set of 5)................................................................. OS-8468 p. 313
www.pasco.com