astigmatism

音標(biāo)發(fā)音

Maybe you fall asleep in class because of uncorrected astigmatism.
也許你在課堂上睡覺是因?yàn)槟愕难劬ι⒐?
They have what is called astigmatism.
他們有所謂散光.
Under astigmatism even narrow parallel light beams will not combine into one point.
有象散存在時(shí)甚至很窄的平行光束都不能會聚在一點(diǎn).
Maybe you fall asleep in class because of uncorrected astigmatism.
也許你在課堂上睡覺是因?yàn)槟愕难劬ι⒐?
Under astigmatism even narrow parallel light beams will not combine into one point.
有象散存在時(shí)甚至很窄的平行光束都不能會聚在一點(diǎn).

a fault in the lens of the eye that reduces the quality of sight, especially a fault that stops the eye from focusing

If someone has astigmatism, the front of their eye has a slightly irregular shape, so they cannot see properly.

像散
In this paper,the method of matrix optics is employed to study the transformation properties of astigmatic elliptic Gaussian beams,the exact formulas of correcting astigmatism and rotary symmetrize transformation in Semiconductor Laser beams are derived.
本文利用矩陣光學(xué)方法研究像散橢圓高斯光束的變換特性，推導(dǎo)出正確的半導(dǎo)體激光束的校正像散與旋轉(zhuǎn)對稱化變換公式。
像差現(xiàn)象
象散現(xiàn)象
象散性
像散性
像散現(xiàn)象
散光

像散
The three-mirror astigmatism systems have the merit of less components, no obscuration, long focal length, big field coverage, wide spectrum, excellent stray light eliminating ability, and high modulated transfer function output.
其中，三反射消像散非球面光學(xué)系統(tǒng)具有組件少、無遮攔、長焦距、大視場、寬波段、抑制雜光能力強(qiáng)、調(diào)制傳遞函數(shù)高等優(yōu)點(diǎn)，所以也正是目前的研究熱點(diǎn)和技術(shù)難點(diǎn)。
像散性
像散現(xiàn)象