Lens Definition, Usage & Common Examples (2 meaning)

Meaning 1：optical lens (lens)

lens 🔊

/lɛnz/

A curved piece of glass or clear material that bends light, used in things like cameras, glasses, or telescopes.

Professional camera lens close-up showing curved glass and metallic body details.

optical lens 🔊

➕

/ˈɒptɪkəl lɛnz/

A physical device, typically made of transparent material like glass, that refracts light to form images, used in instruments such as cameras, eyeglasses, and telescopes.

📁 Category：Technological Inventions 🔖 Level：Beginner

📘 Details & Usage

📖 Root Explanation

From Latin 'lens' meaning 'lentil', referring to the similar shape of early lenses.

💡 Mnemonic

Think of a LENS like a LENTIL – both are round, curved, and help focus attention.

📖 Example

She adjusted the camera lens to capture the details of the flower in the garden. 🔊 She adjusted the camera lens to capture the details of the flower in the garden.

🔗 Collocations

camera lens – the lens attached to a camera for focusing light onto the sensor or film

contact lens – a thin, curved lens placed directly on the eye to correct vision

zoom lens – a lens that allows changing the focal length to magnify or widen the view

🔄 Synonyms

optic (n.) – a device or component that manipulates light for vision or imaging

glass (n.) – in context, refers to a lens made of glass material

objective (n.) – the primary lens in an optical instrument like a microscope or telescope

🌱 Derivatives

lensed (adj.) – equipped with one or more lenses

lensless (adj.) – lacking a lens or not having lenses

📖 Cultural Story

The word 'lens' derives from the Latin 'lens' for 'lentil', due to the convex shape of early glass pieces. In modern English, it is often used metaphorically to denote a perspective, as in 'through the lens of history'.

Meaning 2：perspective or viewpoint (lens)

lens 🔊

/lɛnz/

A way of looking at or understanding something, like how a lens focuses light, to see things from a specific angle.

Person using a magnifying glass to examine a world map, symbolizing perspective.

perspective or viewpoint 🔊

➕

/pəˈspɛktɪv ɔː ˈvjuːpɔɪnt/

A metaphorical framework or angle through which something is interpreted, analyzed, or understood, similar to how a physical lens focuses light.

📁 Category：Culture & History 🔖 Level：Intermediate

📘 Details & Usage

📖 Example

Through the lens of art, we can explore different cultures and their unique expressions. 🔊 Through the perspective of art, we can explore different cultures and their unique expressions.

🔗 Collocations

through the lens of – from the perspective or viewpoint of a specific field, ideology, or context

cultural lens – a way of interpreting things influenced by cultural background or norms

historical lens – an interpretive framework based on historical events or context

🔄 Synonyms

perspective (n.) – a particular way of considering or interpreting something

viewpoint (n.) – a position or angle from which things are observed or judged

angle (n.) – a specific approach or aspect in analyzing a situation