English Dictionary

optical

/ˈɒptɪkəl/

adj

Of, or relating to sight; visual. / Designed to assist or enhance sight / Of, or relating to optics. / Of, or relating to visible light. / Incorporating light-sensitive devices.

The optical illusion made the object appear larger than it actually was.

意味（1）

Of, or relating to sight; visual.

Strabismus is an optical defect.

意味（2）

Designed to assist or enhance sight

A microscope is an optical instrument.

意味（3）

Of, or relating to optics.

Refraction is an optical effect.

意味（4）

Of, or relating to visible light.

Optical telescopes don't work when it is cloudy.

意味（5）

Incorporating light-sensitive devices.

An optical switch opens the door automatically.