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Optics B7 > Martin > Flashcards

Martin Flashcards

1
Q

What are the lower order aberrations

A

Defocus and astigmatism

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2
Q

What are the main high order aberrations

A

Spherical, coma and trefoil

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3
Q

Which wavelengths are more refracted, shorter or longer

A

Shorter

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4
Q

What quantifies the amount of dispersion produced by an optical element

A

Dispersive power

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5
Q

As the dispersive power increased, ,the dispersion of the optical element _____

A

Increases

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6
Q

Each optical element is selected based on 2 important factors

A

Refractive index and abbe number

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7
Q

As the abbe number increases, dispersion ____

A

Decreases

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8
Q

The separation of white light into its component elements by an optical element is

A

Chromatic dispersion

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9
Q

Dispersion of water varies how much across visual spectrum

A

1%

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10
Q

Distance between image planes

A

LCA

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11
Q

Variation of power with wavelength

A

Chromatic difference of power

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12
Q

If measuring image space on the retina

A

Chromatic difference of power

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13
Q

If measuring object space

A

Chromatic difference of refraction

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14
Q

The vergences of source for which the source is focused at the retina for a range of wavelengths (different object distances)

A

Chromatic difference of refraction

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15
Q

Variateion of position of image on retina

A

TCA

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16
Q

TCA may be specified by the ____ between refracted rays for different wavelengths

A

Angle

17
Q

The variation of position with wavelength

A

Chromatic difference of position

18
Q

Variation of magnification with wavelength

A

Chromatic difference of magnification

19
Q

Which to “chromatic difference of ___” go with LCA

A

Power and refraction

20
Q

Which 2 “chromatic diff of ___” go with TCA

A

Position and magnification

21
Q

LCA range is about

A

2.1 D

22
Q

Does the LCA of our eye change over our life? Why?

A

No; bc the chromatic aberration is determined by dispersion of media (not refractive index)

23
Q

Mean magnitude of foveal TCA

A

.82 arcmin of visual angle

24
Q

Lower wavelength makes the eye more _____

A

Myopic

25
Q

Higher wavelength makes the eye more _____

A

Hyperopic

26
Q

The magnitude of the affect of magnification depends on

A

Axial distance (z)

27
Q

Chromatic difference of position (TCA) induces _____ which affect image contrast

A

Phase shift

28
Q

A point object emitting 2 wavelength of light will produce a double retinal image which gives rise to the perception of a double object

A

Chromatic Diplopia

29
Q

A stereoscopic illusion in which different colored objects located at same viewing distance appear the lie at different distances

A

Chromostereopsis

30
Q

What color appears closer f

A

Red

31
Q

An effect of TCA combined with bino vision

A

Chromostereopsis

32
Q

Which appears closer if pupils are displaced temporally

A

Red

33
Q

Which appears closer if pupils are displaced nasally

A

Blue

Optics B7 (2 decks)

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