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| Russian | English |
| аберрационное пятно | aberration spot (jagr6880) |
| диаметр модового пятна | mode spot size |
| подвижное световое пятно | movable light spot |
| пятно Пуассона | Poisson spot |
| пятно размытия | diffuse spot |
| пятно размытия | blurring spot |
| пятно рассеяния | spot of confusion |
| пятно рассеяния | circle of confusion (кружок рассеяния; In optics , a circle of confusion is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source . It is also known as disk of confusion , circle of indistinctness , blur circle , or blur spot . AllaR) |