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.
为什么使用消色差透镜？ | 爱特蒙特光学 - Edmund Optics
非球面消色差透镜是一款具成本效益的透镜，具有卓越的色差和球差校正功能，以经济实惠的方式满足当今光学和视觉系统严苛的成像要求。 通过非球面消色差透镜的协助下，中继系统、聚光镜系统、高数值孔径成像系统和扩束器的透镜设计能够获得改善。 图5和图6对消色差透镜和非球面消色差透镜进行了比较。 图5显示 #45-209 直径为12.5mm和焦距为14mm的TECHSPEC®消色差透镜的调制传递函数 (MTF)和横向光线扇形色差图，图6则显示 #49-658 直径为12.5mm和焦距 …
2.10: Designing an Achromatic Doublet - Physics LibreTexts
An achromatic doublet is typically made of a positive crown glass lens whose power is positive but which decreases with increasing wavelength (i.e. toward the red), cemented to a weaker flint glass lens whose power is negative and also decreases (in …
Achromatic Optics – lens doublets, apochromats, achromatism, …
These achromatic doublet lenses are available in focal lengths up to 500mm and are ideal in imaging applications, laser collimation, and as objective lenses in telescopes and other instruments. Custom achromatic lenses are available upon enquiry including triplet lenses and additional coatings.
Combinations of Achromatic Doublets (Chapter 8) - Introduction to Lens ...
The achromatic doublet is a fundamental building block in lens design because it is corrected for chromatic aberrations, and can also be corrected for spherical aberration and coma aberration. The early lens designers explored all combinations of two achromatic doublets.
Achromatic Doublet - optics-online.com
Achromatic doublet lenses ("achromat") are designed to eliminate chromatic and spherical aberrations inherent in singlet lenses. When used on-axis, an achromatic lens focuses an parallel input beam to a perfect "point", limited only by the effects of diffraction. This performance can be achieved over a broadband of wavelength.
Achromatic Lenses - Thorlabs
We offer achromatic doublets, cylindrical achromatic doublets, and air-spaced achromatic doublets, as well as achromatic triplets that allow for maximum aberration control. Thorlabs' achromatic lenses cover the 240 - 410 nm, 400 - 700 nm, 650 - 1050 nm, 1050 - 1620 nm, 3 - 5 µm, and 8 - 12 µm wavelength ranges.
Achromatic Doublet | Clarity, Precision & Focus
2024年5月28日 · These are specialized lenses crafted to significantly reduce chromatic and spherical aberrations in optical systems. The essence of an achromatic doublet lies in its ability to focus two wavelengths of light (usually red and blue) …
Achromatic telescope - Wikipedia
An Achromatic telescope uses an achromatic lens to correct for this. An achromatic lens is a compound lenses made with two types of glass with different dispersion. One element, a concave lens made out of Flint glass, has relatively high dispersion, while the other, a convex element made of Crown glass, has a lower dispersion.
Approach for designing thick cemented doublet lenses based on …
A new, to the best of our knowledge, method for designing a thick-lens achromatic doublet based on the concept of a caustic surface to correct both third- and fifth-order spherical aberration is presented. We consider two different wavelengths brought into coincidence at the back focal length instead of the effective focal length as it is usually done, to …
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