Отрывок: Hence these defocused planes may be designated as the optimal receiving image planes to reduce the effect of primary spherical aberra- tions. It is evident that the apodized optical systems are more sensitive to aperture edge masking than the un- apodized ones. The effect of primary spherical aberration is also studied and seen that, at certain defocused planes, i.e., at d = 2π, aperture edge masking lowering the ring- ing effect even in the absence of aperture shading and it is ...
Название : | Edge imaging characteristics of aberrated coherent optical systems by edge masking of circular apertures |
Авторы/Редакторы : | Venkanna, M. Sagar, K.D. |
Ключевые слова : | amplitude filters edge image apodization coherence edge masking primary spherical aberrations defocus |
Дата публикации : | Июн-2022 |
Издательство : | Самарский национальный исследовательский университет |
Библиографическое описание : | Venkanna M, Sagar KD. Edge imaging characteristics of aberrated coherent optical systems by edge masking of circular apertures. Computer Optics 2022; 46(3): 388-394. DOI: 10.18287/2412-6179-CO-940. |
Серия/номер : | 46;3 |
Аннотация : | In this paper, attempts have been made to study the joint effects of apodization and aperture masking on the diffraction images of coherently illuminated straight edge. The Edge-Ringing, Edge-Shift and Edge-Eradient of the edge images have been evaluated for different values of apo-dization using edge masking of circular apertures. We have considered rotationally symmetric, ab-errated coherent optical system. These investigations have lead to the use of certain pupil functions in conjunction with optimal apodizers to assess the quality of edge images. Any obstruction placed in the light path of an optical system prevents waves from a portion of the wavefront in reaching the focal zone. This results in the change in the light flux at every point of the diffraction pattern. This is in turn, depends on the shape and size of the obstruction. |
URI (Унифицированный идентификатор ресурса) : | https://dx.doi.org/10.18287/2412-6179-CO-940 http://repo.ssau.ru/handle/Zhurnal-Komputernaya-optika/Edge-imaging-characteristics-of-aberrated-coherent-optical-systems-by-edge-masking-of-circular-apertures-103035 |
Другие идентификаторы : | Dspace\SGAU\20230412\103035 Dspace\SGAU\20230426\103035 Dspace\SGAU\20230503\103035 |
Располагается в коллекциях: | Журнал "Компьютерная оптика" |
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