# optics

/ˈɑptɪks/ (US) · /ˈɒptɪks/ (UK)

Source: https://englishreference.com/word/optics
Updated: 2026-06-20

## Senses

### 1. the science of light

noun · CEFR C1 · Technical

the scientific study of light and how we see things.

For teachers: the branch of physics which involves the behaviour and properties of light, including its interactions with matter.

- She decided to study optics because she was fascinated by how lasers work.
- The laboratory is equipped with advanced instruments for research into fiber optics and laser technology.

Usage: Uncountable in this scientific sense.

### 2. public perception

noun · CEFR B2

the way an action or event looks to the general public, especially in politics.

For teachers: the way an event or action is perceived by the public; the public relations aspect of a situation.

- The optics of the politician's expensive holiday were bad while the country was in a crisis.
- The company was less concerned with the legal outcome than with the optics of being seen to ignore environmental regulations.

Usage: Always plural in form but often treated as a singular concept.

### 3. optical equipment

noun · CEFR C1 · Technical

the lenses or mirrors in a device like a camera or telescope.

For teachers: the components of an instrument, such as lenses and prisms, that determine its optical performance.

- The telescope has excellent optics, allowing us to see distant stars clearly.
- High-end cameras are often expensive because of the precision required to manufacture their internal optics.

## Examples

- The optics of the expensive dinner were very bad for the politician.
- The company cancelled the luxury retreat because the optics would look terrible while they were laying off staff.
- While the policy was economically sound, the optics of a billionaire advising on poverty relief proved too controversial for the administration to defend in the press.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.