diopter; unit of lens power
Tone colorsmāmámǎmàma
Meanings
1 sense · 3 examplesnoun
diopter; unit of refractive power of a lens
technicalUsed in optics and ophthalmology. A positive value indicates a converging (convex) lens, while a negative value indicates a diverging (concave) lens. One diopter corresponds to a focal length of one meter.
Zhè这
gè个
tòu透
jìng镜
de的
qū屈
guāng光
dù度
shì是
++
2.002
.
biǎo0
shì0
，
tā表
shì示
tū它
tòu是
jìng凸
透
镜
。
This lens has a diopter of +2.00, indicating it is a convex lens.
Jìn近
shì视
dù度
shù数
yuè越
shēn深
，
qū屈
guāng光
dù度
de的
fù负
zhí值
yuè越
dà大
。
The deeper the myopia, the larger the negative value of the diopter.
Show 1 more exampleShow fewer examples
Yàn验
guāng光
shī师
cè测
liáng量
le了
tā他
de的
yǎn眼
jing睛
qū屈
guāng光
dù度
。
The optometrist measured the diopter of his eyes.