像差

xiàngchā

noun

Meanings

1 aberration; image distortion in a lens or mirror

Characters

difference; deviation

Examples

HSK 4

这款镜头几乎没有色像差。

Zhè kuǎn jìngtóu jīhū méiyǒu sè xiàngchā.

This lens has almost no chromatic aberration.

HSK 7-9

工程师正在校正望远镜的像差。

Gōngchéngshī zhèngzài jiàozhèng wàngyuǎnjìng de xiàngchā.

The engineers are correcting the telescope's aberration.

Tips

usage

Technical optics term. Common subtypes: 球面像差 (spherical), 色像差 (chromatic), 慧形像差 (coma). Note that here 差 is read chā (difference), not chà (poor).

Stroke Order

像 xiàng

差 chà