Background for diopter

diopter

/daɪˈɒptər/ /daɪˈɑːptər/

Illustration diopter - Image 1

Illustration diopter - Image 2

noun

A unit of measure of the power of a lens or mirror, equal to the reciprocal of its focal length in meters. Myopia is diagnosed and measured in diopters.

Examples :

"The eye doctor said my daughter's prescription changed, and she now needs glasses with a -1.5 diopter correction for nearsightedness. "

medicine physics technical unit science

Illustration diopter - Image 1

noun

The dioptre adjustment mechanism of a pair of binoculars.

Examples :

"I adjusted the diopter on my binoculars to get a clear view of the bird. "

device technology part

Illustration diopter - Image 1

noun

Any lens system, such as a telescope.

Examples :

"The astronomer used a powerful diopter to observe the distant star. "

technology physics device science

Illustration diopter - Image 1

noun

A theodolite or similar surveyor’s angle measuring device.

Examples :

"The surveyor used a diopter to carefully measure the angles of the property lines. "

technology device technical

Illustration diopter - Image 1

noun

Examples :

"The surveyor carefully aligned the diopter (alidade) on the plane table to sight the distant landmark. "

technical device science

Illustration diopter - Image 1

noun

A surgical speculum.

Examples :

"The doctor used a diopter to gently open the patient's nostril and examine the inside. "

medicine device

Illustration diopter - Image 1

noun

An instrument for drawing the skull by projections.

Examples :

"The anthropologist used a diopter to create precise drawings of the ancient skull fragments, aiding in the reconstruction of the individual's face. "

medicine device anatomy