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词汇 Superachromatic lens
分类 英语词汇 英语翻译词典
释义

Superachromatic lens

中文百科

超消色差 Superachromat

(重定向自Superachromatic lens)
4种波长的光在超消色差镜头的焦平面上,残留的色差已经接近零。
卡尔蔡司的超消色差望远镜头,5.6/350 T*。

超消色差超消色差透镜马克西米利安·赫茨贝格尔最先构想和发展出来的终极高修正镜头。超消色差透镜的色偏移曲线是四次方程,意味着在理论尚能将4种单独的色光集中在同一平面上,并同时修正球面像差和像场差。这种近乎完美的色差修正对影片和数字多光谱摄影是非常有帮助的。超消色差透镜可以将波长0.7至1.0微米的近红外线和可见光汇聚在相同的焦平面上,而不需要一再的调整焦点。不幸的是,由于对光学玻璃和色散的选择有限,超消色透镜必须使用宽容度很小且很昂贵的氟玻璃制造。

英语百科

Superachromat 超消色差

(重定向自Superachromatic lens)
Superachromatic lens brings 4 wavelengths to a common focal plane, and has near-zero residual chromatic aberration.
Carl Zeiss Tele-Superachromat, 5,6/350 T* lens.
Focus error for four types of lens, over the visible and near infrared spectrum.

The superachromat or superachromatic lens was first conceived and developed by Maximilian Herzberger as the ultimately well-corrected lens. The color shift curve of a superachromat is a quartic, meaning that in theory four separate colors can be brought to focus in the same plane, while simultaneously correcting spherical aberration and field aberrations. This near-perfect correction of chromatic aberration is highly beneficial in film and digital multi-spectral photography, as a superachromat can focus near-infrared energy in the 0.7 to 1.0 micrometer wavelength band in the same focal plane as visible light, eliminating the need for refocusing. Unfortunately, due to the limited selection of optical glasses and partial dispersion properties, superachromats must be manufactured with costly fluorite glasses and to very tight tolerances.

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