光学原理回顾：光学系統中重要的参数（四.色差·像差形式） - 知乎
Mar 31, 2021 · 垂轴色差，指当一物体通过透镜有不同波长的光成像时，由于放大率的不同从而使所成像的高度不同，此种像差称之为 垂轴色差或倍率色差。 在倍率色差中，由于不同光线波长的折射率不同，导致像平面上不同颜色波长的光线产生横向色散，即不同颜色有不同的放大倍率： 一阶成像放大倍率： m=\frac {h'} {h}=-\frac {q} {p}\tag {2} 对于不同波长的光的放大倍率： \begin {align} Red:m_ {R}=\frac {h'_R} {h}\\ Yellow:m_ {Y}=\frac {h'_Y} {h}\\ Blue:m_ {B}=\frac {h'_B} …
Achromatic lens - Wikipedia
An achromatic lens or achromat is a lens that is designed to limit the effects of chromatic and spherical aberration. Achromatic lenses are corrected to bring two wavelengths (typically red and blue) into focus on the same plane. Wavelengths in between these two then have better focus error than could be obtained with a simple lens.
Achromat and Apochromat – What is the Difference? - ZEISS
Oct 31, 2000 · The most conspicuous colour aberration is longitudinal chromatic aberration (LCA). With a monochromat single lens, only the image (or the focus) of one wavelength (colour) lies in the image plane, while the focus for shorter wavelengths lies in front of the image plane, and behind the image plane for longer wavelengths.
为什么使用消色差透镜？ | 爱特蒙特光学 - Edmund Optics
消色差透镜 是一种由正低折射率（冕牌）和负高折射率（火石）这两种光学组件胶合而成的透镜。 与仅包含单片玻璃的单片透镜相比，双片透镜的双合设计能够为用户提供额外的设计自由，并进一步优化透镜性能。 因此 相较于相等直径和焦距的单片透镜，消色差透镜的优势更为显著。 消色差透镜具备各种类型的配置，其中常见的是正消色差透镜、负消色差透镜、三合消色差透镜和非球面消色差透镜。 要注意的是，消色差透镜可以是双合（双元件）或三合（三元件），且元件的 …
Achromatic Lenses: Advantages, Drawbacks, and Usage - AZoOptics
Jun 24, 2024 · An achromatic lens - or achromat - is a highly specialized optical lens that can correct chromatic aberration; a type of image distortion that occurs when white light is refracted into different...
Why Use an Achromatic Lens? - Edmund Optics
An achromatic lens, also referred to as an achromat, typically consists of two optical components cemented together, usually a positive low-index (crown) element and a negative high-index (flint) element. In comparison to a singlet lens, or singlet for short, which only consists of a single piece of glass, the additional design freedom provided ...
Understanding Lenses: Aplanats and Achromats - Photonics
Achromatic lenses are designed for broadband applications, including astronomy, color photomicrography, plasma spectroscopy and biomedical instrumentation. They consist of two or more lens elements that are composed of discrete glass materials and corrected for chromatic aberration with respect to two wavelengths, normally blue and red.
蔡司史（四）· 复消色差和萤石的秘密 - 知乎 - 知乎专栏
色差会使像质劣化，影响清晰度，人们一直在期待消色差物镜 (Achromat Objective) 的诞生。 牛顿在研究了水的色散后，发现其与冕玻璃相同，便认为所有材料都具有相同的相对色散 (Relative Dispersion)。 如果属实，那么透镜系统的色差就是无法校正的。 牛顿比较草率地得出了这个结论，错判了折射望远镜的死刑。 牛顿关于光和色的实验草图手稿 {3} 几乎和牛顿的光学研究同时，英国玻璃商人乔治·拉文斯克罗夫特 (George Ravenscroft, 1632—1683) 在玻璃中掺入氧化铅， …
Achromatic Optics – lens doublets, apochromats, achromatism, …
Achromatic optics are optical devices or setups which have been optimized such that chromatic aberrations are minimized, such that they can be used in a wide range of wavelengths. Most frequently, this refers to optical lenses or objectives, which …
Achromats Selection Guide: Types, Features, Applications
Achromats are optical lenses designed to minimize chromatic aberration. Achromats are also known as achromatic lenses. Chromatic aberration is a type of optical distortion which occurs when a lens fails to focus all colors to the same convergence point.