Search results
These methods of aberration measurement can be plotted to help with aberration analysis. The transverse ray aberration is generally plotted against normalized pupil coordinates, as shown in figure 2.2. When this is the case the plot is called a “Ray Fan”.
- Optical Aberrations
ACA, along with other aberrations, can be measured two ways....
- Optical Aberrations
The wave aberration function is a function of the field H and aperture ρ vectors. Because this function represents a scalar, which is the wavefront deformation at the exit pupil, it depends on the dot product of the field and aperture vectors. The assumed axial symmetry leads to a select set of terms. { H , ρ } = ∑ W. k , l , m H k ρ l cos ...
- 1MB
- 40
Spherical aberration. Astigmatism. Coma. Curvature of field. Distortion (pincushion or barrel distortion). chromatic aberration. 4.1: Introduction to Optical Aberrations. We have hitherto made the assumption that a lens or a curved mirror is able to form a point image of a point object. This may be approximately true if the depth of the mirror ...
A grid of points is defined at the entrance or exit pupil of an optical system and rays are traced from the object point through the grid points, through the observation plane. The rays intersections form a spot diagram. Ray grids. Located at the entrance or exit pupil plane.
- 597KB
- 39
Figure 26.6.1 26.6. 1: (a) Chromatic aberration is caused by the dependence of a lens’s index of refraction on color (wavelength). The lens is more powerful for violet (V) than for red (R), producing images with different locations and magnifications. (b) Multiple-lens systems can partially correct chromatic aberrations, but they may require ...
ACA, along with other aberrations, can be measured two ways. The first as a distance along the optical axis (longitudinal) and the second as a distance perpendicular from the optical axis (transverse). These are shown in figure 1.1b. It’s helpful, when measuring the transverse and longitudinal ray aberrations, to designate abbreviations for ...
People also ask
How is Ray aberration plotted?
What is a wave aberration function?
How is transverse Ray aberration plotted?
How do you describe optical aberration?
What is a spherical aberration?
How do optical designers quantify aberrations?
The wave aberration function is a function of the field H and aperture vectors. H and define uniquely a ray. Because this function represents a scalar, which is the wavefront deformation at the exit pupil, it depends on the dot product of the field and aperture vectors. The assumed axial symmetry leads to a select set of terms.
