optics 14 lenses 2.notebook
January 31, 2017
Go over questions from lens handout
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optics 14 lenses 2.notebook
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Anatomy of the Eye:
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Retina Cells
120 million
6 million
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optics 14 lenses 2.notebook
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Image formation
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Eye Defects: causes and treatments
Myopia
Causes
Treatment
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Eye Defects: causes and treatments
Hyperopia
Causes:
Treatment
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optics 14 lenses 2.notebook
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Eye Defects: causes and treatments
Presbiopia
Causes
Treatment
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optics 14 lenses 2.notebook
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Eye Defects: causes and treatments
Astigmatism
Causes:
Treatment
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optics 14 lenses 2.notebook
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Optical Power
Converging Diverging
Lens systems
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optics 14 lenses 2.notebook
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LENS MAKER's EQUATION
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optics 14 lenses 2.notebook
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optics 14 lenses 2.notebook
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Calculate the optical power of a plano­concave lense made of glass (n=1.5) with a radius of 10 cm.
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optics 14 lenses 2.notebook
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Drawing the Image Formed by a Microscope:
L2
L1
F1
F'2
F2
F'1
First Image: Case 3
Second Image: Case 5
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optics 14 lenses 2.notebook
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Lens Makers Equation
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optics 14 lenses 2.notebook
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An optician received an order for a double concave lense with equal radii. The lens must have a focal length of 40 cm and made from lucite. What will be the radii for each curve?
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optics 14 lenses 2.notebook
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Challenger Question:
You have 3 lenses:
1st has a focal length of 40 cm and is converging
2nd has a focal length of 12.5 cm and is also converging
3rd has a focal length of 20 cm and is diverging
a) Calculate the optical power of each lense:
b) combine the 1st and 3rd lense; find the focal length. Is it converging or diverging?
c) combine P2 and P3
d) Which of the 3 lenses should be combined to get a focal length of 18.2 cm?
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