OPT 111 Flashcards by Noam Nicholson

Q

F = primary focal point

A

object location for image at infinity

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Q

F’ = secondary focal point

A

image location for object at infinity

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Q

f = primary focal length

A

object distance for image at infinity

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Q

f’ = secondary focal length

A

image distance for object at infinity

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Q

italic L (eq)

A

italic L = n / italic l

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Q

n = index of refraction through media (m)

A

n = c / v(m)

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Q

italic l (def)

A

object distance

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Q

italic l’ (def)

A

image distance

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Q

italic F (def)

A

lens power

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Q

italic L (def)

A

object vergence

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Q

italic L’

A

image vergence

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Q

Vergence relationship equation

A

italic L + italic F = italic L’

object vergence + lens power = image vergence

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Q

diverging rays out of lens

A

virtual image

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Q

converging rays out of lens

A

real image

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Q

diverging rays into lens

A

real object

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Q

converging rays into lens

A

virtual object

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Q

F of plus lens

A

down stream

Q

F’ of plus lens

A

up stream

Q

F of minus lens

A

up stream

Q

F’ of minus lens

A

down stream

Q

c = speed of light (value)

A

3.00x10^8 m/s

Q

Air refractive index

A

1.00

Q

Water refractive index

A

1.33

Q

CR-39 refractive index

A

1.49

Crown glass refractive index

1.523

Snell's law

n1 * sin( theta1) = n2 * sin( theta2)

Nodal Ray

connects object and nodal point

F' Ray

Enters lens parallel to axis from real object or towards virtual object. Connects lens and F'

F Ray

Connects image and F, exits lens parallel

Plus Lens: Real object located at infinity

Real image, inverted, minified, located at F'

Minus lens (description)

Concave lens

Plus lens (description)

Convex lens

Image type with negative vergence

Virtual

Image type with positive vergence

Real

Object type with negative vergence

Real

Object type with positive vergence

Virtual

Real image (vergence)

positive vergence (image)

Virtual image (vergence)

negative vergence (image)

Real object (vergence)

negative vergence (object)

Virtual object (vergence)

positive vergence (object)