Aberrations and image quality

Question 1

True/False: The smaller the pupil it makes things clearer

Answer 1

True and False, smaller pupil is clearer to an extent but at a point you start seeing diffraction limit and it gets worse

Question 2

_____ is the best focused spot of light that a perfect lens with a circular aperture can make, limited by the diffraction of light.

Answer 2

Airy Disk, (limitation of image quality of an optical system)

Question 3

How far apart are the parts of the letters on a snellen chart?

Answer 3

1 minute of arc

Question 4

Diffraction causes light to bend _______ to the direction of the diffracting edge.

Answer 4

perpendicular

Question 5

What is MTF?

Answer 5

modulation transfer function, ability of an optical system to reproduce (transfer) various levels of detail (spatial frequencies) from the object to the image.

Question 6

What is MTF comparing?

Answer 6

contrast and resolution

Question 7

What is the measurement of how small of a spot you can see?

Answer 7

resolution

Question 8

What is the measurement of how sharp an image is?

Answer 8

contrast

Question 9

how many cycles are in 1 degree?

Answer 9

30 cycles, (1 degree= 60 min, 2 minutes per cycle…)

Question 10

True/False: If you add one diopter of defocus with a perfect eye, it blurs out.

Answer 10

True