| 词汇 | example_english_chromatic-aberration |
| 释义 | Examples of chromatic aberrationThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Homogeneity is constrained by optical parameters such as chromaticaberration, whereas stability is controlled by the power supply and operating temperatures. Einthoven first explained chromaticaberration in the eye, which means that the eyes will not focus all the colors at the same time. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Gregory pointed out that a reflecting telescope with a parabolic mirror would correct spherical aberration as well as the chromaticaberration seen in refracting telescopes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Ardenne applied the scanning principle not only to achieve magnification but also to purposefully eliminate the chromaticaberration otherwise inherent in the electron microscope. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Newton first demonstrated the presence of chromaticaberration in the human eye in 1670. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Lenses for correcting chromaticaberration of the eye. This result suggested that chromaticaberration might account, in part, for color assimilation over small, but not large, enclosed areas. The ray tracing analysis yields a set of characteristics of interest to optical designers, including distortion, astigmatism, and chromaticaberration. The major contributions were given by chromaticaberration and space-charge effect. In this way, one may weaken the effects of both space charge and chromaticaberration. The test grating was free of chromaticaberration, and contrast was compromised neither by the optics of the eye, nor by diffraction effects. Evidence that the loss of the blue cone opsin is a positively selected trait lies in the fact that, without blue cones, the confounding effects of chromaticaberration are reduced. The effect of chromaticaberration on visual acuity. Chromaticaberration might account for the null difference between the two patterns for smaller widths, although this would not explain assimilative color perceived over wider contours. This reduces the amount of chromaticaberration over a certain range of wavelengths, though it does not produce perfect correction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The term "purple fringe" used to describe one aspect of chromaticaberration dates back to at least 1833. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Another more routinely used technique tests the subject's extent of chromaticaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Lateral chromaticaberration (purple/green fringing) can be significantly reduced by applying such warping for red, green and blue separately. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The design corrects the problems of off-axis aberrations such as coma found in reflecting telescopes while also correcting chromaticaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In a later design he added a cemented doublet to correct chromaticaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The power of the positive element predominates, but the negative element corrects for chromaticaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Bouwers came up with a later design that used a cemented doublet to form the meniscus corrector shell to correct chromaticaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Such illusions have been reported for over a century and have generally been attributed to some form of chromaticaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There is the downside of the potential for chromaticaberration due to the refractive elements, but it is hardly noticeable. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They are commonly used for laser applications, however, where the beams are both monochromatic (minimizing chromaticaberration) and narrow (minimizing spherical aberration). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Catoptrics and optical fiber have no chromaticaberration, while dioptrics need to have this error corrected. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Flickers were created through a mixture of motion blur, chromaticaberration, and focus effects. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Although there are no colors in the photograph, chromaticaberration will blur the image. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This reasoning works to discount chromaticaberration as the cause. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In optical instruments, dispersion leads to chromaticaberration; a color-dependent blurring that sometimes is the resolution-limiting effect. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Low dispersion glass may also be used to reduce chromaticaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Because this test is based on chromaticaberration and not on color discrimination, it is used even with color-blind patients. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Early refracting telescopes with non-achromatic objectives were constructed with very long focal lengths to mask the chromaticaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In transverse chromaticaberration, different wavelengths of light are displaced in non-corresponding retinal positions of each eye during binocular viewing. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Another was the addition of several highlights and outlines consistent with matching the effects of chromaticaberration, particularly noticeable in primitive optics. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This field-flattening solution is not perfect, as images suffer from chromaticaberration with different colors ending up at slightly different places. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. He invented the feathering spectrograph by using the commonly occurring chromaticaberration to his advantage. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Chromaticaberration, spherical aberration and the dependence on natural light all played a role in limiting microscope performance in the early 19th century. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Ultra-low dispersion and fluorite elements virtually eliminated chromaticaberration at long focal lengths. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The design had an ultra wide field of view but did not correct chromaticaberration and was only suitable as a monochromatic astronomical camera. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In photography, chromaticaberration produces soft overall images, and color fringing at high-contrast edges, like an edge between black and white. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Criticism includes occasional vignetting, and some chromaticaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Telescope makers from that era found that a very long focal length objectives had no appreciable chromaticaberration (the uncorrected chromaticaberration fell within the large diffraction pattern at focus). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The pigments also enhance the acuity of the fovea by reducing the sensitivity of the fovea to short wavelengths and counteracting the effect of chromaticaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This leads to a large momentum spread of the beam and produces, for example, chromatic aberrations in the final focusing system. Chromadepth glasses purposely exacerbate chromaticaberration and give the illusion of colors taking up different positions in space, with red being in front, and blue being in back. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. He chose a spherical shape for his mirror instead of a parabola to simplify construction; even though it would introduce spherical aberration, it would still correct chromaticaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In refractive or diffractive optical systems, especially those imaging a wide spectral range, coma can be a function of wavelength, in which case it is a form of chromaticaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The reflecting telescope was invented in the 17th century as an alternative to the refracting telescope which, at that time, was a design that suffered from severe chromaticaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Failures of isoluminance caused by ocular chromatic aberrations. This caused the different colors to focus at the same or very close points, an improvement that eliminated chromatic aberrations and allowed observers to use higher-power objectives. Stereopsis at isoluminance in the absence of chromatic aberrations. The highrefractive index, low-dispersion glass additionally helps reduce chromatic aberrations. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Furthermore, chromatic aberrations can be corrected by using two or more refracting materials over the full visible range. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Chromatic aberrations are defined as types of optical distortions that occur as a consequence of refracting properties of the eye. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These particular systems have no chromatic aberrations, and that is why they are preferable. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are higher order chromatic aberrations, such as the dependence of magnification on color. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Several models have been proposed to explain this effect which is often attributed to longitudinal and/or transverse chromatic aberrations. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These chromatic aberrations are bad because they create differences in focus, which prevent good resolution; however, if the range is restricted it is possible to achieve good resolution. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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