| 单词 | comatic circle |
| 释义 | > as lemmascomatic circle 1. Optics. Of, pertaining to, or exhibiting (a) coma: see coma n.2 3; comatic circle, a circle produced in the focal plane by all rays from an off-axis point that pass through the same annular region of a lens, each such circle being a component of the coma associated with the image of the point. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > magnification or magnifying instruments > [adjective] > microscope > coma comatic1906 the world > physical sensation > sight and vision > optical instruments > magnification or magnifying instruments > [noun] > microscope > coma > component of comatic circle1906 1906 H. D. Taylor Syst. Appl. Optics viii. 200 This circle we will call a comatic circle. 1923 Trans. Optical Soc. 24 3 The comatic images cannot be examined properly with the objective in its normal position owing to the oblique passage of the light through the eyepiece. 1958 Van Nostrand's Sci. Encycl. (ed. 3) 380/1 Rays from an off-axis point through any zone of a lens meet the focal plane in a comatic circle. 1972 IEEE Jrnl. Quantum Electronics 8 724/1 An improved resonator configuration for CW dye lasers is described, permitting minimum circular waist areas and compensation for comatic as well as astigmatic aberration. < as lemmas |
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