lecture 28

lecture 28 - 26.10 The Human Eye The Th eye is an optical...

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26.10 The Human Eye The eye is an optical system very similar to a camera. Each has a lens, an aperture, and each forms a real, inverted and reduced image. A camera forms an image on film, and the eye forms an image on the retina . he is the colored part of they eye It The iris is the colored part of they eye. It can be blue, brown, gray, green or hazel. The cornea is a transparent covering over e lens. the lens. The majority of the refraction takes place in the cornea (70%) and the lens (~25%). The lens is the shape of a small bean. It’s about 9 mm tall and 4 mm thick. It is a complex, layered, fibrous mass, similar to a transparent onion. It contains bout 22 000 fine layers about 22,000 fine layers. The index of refraction varies throughout the lens. The average is n = 1.40
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pupil . The pupil changes its size depending on the light intensity. It will vary in size from about 2 – 7 mm.
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This note was uploaded on 08/04/2009 for the course PHYS 2002 taught by Professor Blackmon during the Spring '08 term at LSU.

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lecture 28 - 26.10 The Human Eye The Th eye is an optical...

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