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.
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 …
8 - Combinations of Achromatic Doublets - Cambridge …
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. This chapter discusses some of the solutions found by those designers.
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 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.
REFRACTING TELESCOPE OBJECTIVE: DOUBLET ACHROMAT
Diagrams below illustrate basic properties of the main achromatic doublet types: longitudinal aberration plot for five spectral lines spanning most of the visual spectrum (g-436nm, F-486nm, e-546nm, C-656nm and r-707nm), axial F-e-C ray spots, P-V wavefront error at 0.5° off-axis (e-line) and best image curvature radius.
Our method separates an apochromat into two achromatic objec-tives, which have secondary spectra that cancel and separate four-crossing superachromats as two apochromats, which have tertiary spectra that cancel. Our method relies on the ability of lens design programs to plot the chromatic focal shift curve.
Achromatic Optics – lens doublets, apochromats, achromatism, …
Knight Optical's offers achromatic lenses used to minimise chromatic and spherical aberrations. 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 …
Achromatic metalenses for full visible spectrum with extended …
2024年11月7日 · The metalens was used as an objective lens, coupled with a 30 mm achromatic doublet lens (serving as the tube lens) to form a 2f-2f imaging system, and a color CCD was used to capture the image ...
Lens Design with Achromatic Doublets - Optica Publishing Group
Techniques for lens design with achromatic doublets are highlighted. Off-the-shelf lens design is also discussed and some examples are presented. Expand this Topic
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