prism-glasses
Definition
Noun (plural): "prism-glasses" refers to optical devices, typically binoculars or eyeglasses, that incorporate prisms to correct vision or enhance image quality. Prisms are used to bend light, allowing for a wider field of view or image orientation correction.
Usage Examples
- (Binoculars with prisms for magnification.)
- (Eyeglasses with built-in prisms to align visual images.)
Advanced Usage
"prism-glasses for field work": specialized binoculars designed for outdoor activities like birdwatching or surveillance.
- The hiker brought prism-glasses to scan the mountain range for trails.
"therapeutic prism-glasses": eyeglasses used in vision therapy to treat conditions like strabismus or diplopia.
- The child wore prism-glasses to train his eyes to work together.
Variants and Related Words
Prism (n): a transparent optical element with flat, polished surfaces that refract light.
- The prism in the glasses bends light to correct the patient's vision.
Prismatic (adj): relating to or resembling a prism; often describing colours produced by light refraction.
- The prismatic effect of the glasses created a rainbow-like spectrum.
Synonyms
- Binoculars: a pair of identical or mirror-symmetric telescopes mounted side-by-side and aligned to point in the same direction.
- Field glasses: a synonym for binoculars, especially those used for outdoor observation.
Related Idioms
- "See through prism-glasses": to view something from a distorted or altered perspective.
- He saw the world through prism-glasses, where everything seemed fragmented and colourful. (A metaphorical expression, not literal usage of the device.)
Phrasal Verbs
- Look through prism-glasses: to use the device to examine something closely.
- She looked through prism-glasses to spot the ship on the horizon. (To observe with the aid of the optical tool.)