Test 3 - Aberrations

What aberration does this image from a point light source correspond to?

• Astigmatism

• This image is free of aberrations

• Distortion

• Spherical aberration

• Coma

An aberration in which images of one point of an object are located at different distances from the optical system for different wavelengths is called .....

• Chromatism of magnification

• Рosition chromatism

• Spherical aberration

Aplanatic points are a pair of conjugate points in which ....

• spherical aberration is eliminated

• the sine condition is satisfied

• chromatic aberrations are eliminated

• a non-homocentric bundle converges

According to Rayleigh's criterion, the wave aberrations of the microscope lenses ....

Which aberrations are NOT related to monochromatic aberrations?

• Chromatism of magnification

• Рosition chromatism

• Spherical aberration

• Coma

• Astigmatism

Spherical aberration causes a redistribution of energy in the image of the point: ....

• the brightness of the disc increases and the brightness of the rings decreases

• the brightness of the disk decreases and the brightness of the rings increases

• brightnesses of the disc and rings fall

• the width of the disk decreases and the width of the rings increases

• the width of the disk increases and the width of the rings decreases

The illumination method introduced by Köhler made it possible ....

• to correct spherical aberration

• to obtain uniform illumination over the field of view

• to achieve increased resolution by using a special condenser

• to increase the field of view

• to eliminate the curvature of the visual field

What does the image correspond to?

• Ideal correction of aberrations

• Overcorrected spherical aberration

• Undercorrected spherical aberration

• Different types of distortion

• Coma

An achromatic lens ....

• corrects chromatic aberration for light rays of two different wavelengths.

• corrects chromatic aberration for light rays of three or more different wavelengths.

• partially corrects spherical aberration.

• has coma and distortion corrected.

• corrects spherical aberration and astigmatism.

A planapochromatic objective is an objective in which ....

• the aberration for 2 wavelengths is corrected and the field curvature is corrected.

• the aberration for 3 wavelengths is corrected and the field curvature is corrected.

• the aberration for 3 wavelengths is corrected and no spherical aberration.

• the aberration for 2 wavelengths is corrected and no spherical aberration.