biconvex
Curved both sides outward
Biconvex describes a lens or shape that curves outward on both sides, bulging in the middle like a lentil.
A magnifying glass is biconvex—thicker at the center than at the edges.
The term appears in optics and anatomy: the biconvex lens of the human eye.
Rounded vault forming roof
- bulgeOutward curved projection
- curvedSmoothly bent, not angular
- roundedHaving no sharp angles
- sphericalGlobe-like in form
lenticular · elliptical · oblate · camber · protrusion · swell · discoid · plump
Eye's adjustable focusing element
- erythrocyteOxygen-transporting blood component
- red blood cellOxygen-carrying blood component
- meniscusCurved liquid surface
- corneaEye's clear outer dome
Light-focusing curved glass
- magnifying glassHandheld lens for enlargement
- spectaclesCorrective eyewear worn daily
- eyeglassesCorrective lenses worn
- reading glassesCorrective lenses for close-up
camera lens · loupe · corrective lens · objective lens · eyepiece
Wave bending between media
- focal pointCenter of interest
- convergenceProcess of approaching sameness
- diopterUnit of focal power
- aberrationDeviation from the norm
magnification · ray tracing · focusing · dispersion · collimation
dome
Rounded vault forming roof
spherical · lenticular · elliptical · oblate · camber · protrusion · swell · discoid · plump · gibbous
crystalline lens
Eye's adjustable focusing element
- erythrocyteOxygen-transporting blood component
- red blood cellOxygen-carrying blood component
- meniscusCurved liquid surface
lens
Light-focusing curved glass
- magnifying glassHandheld lens for enlargement
- spectaclesCorrective eyewear worn daily
- eyeglassesCorrective lenses worn
reading glasses · camera lens · loupe · corrective lens · objective lens · eyepiece
refraction
Wave bending between media
- focal pointCenter of interest
- convergenceProcess of approaching sameness
- diopterUnit of focal power
aberration · magnification · ray tracing · focusing · dispersion · collimation
- bi- wordsbiannual, biathlon, bicameral, bicentennial, bicycle
- lenseszoom lens, multifocal, prime lens, progressive, single vision
concave, binoculars, convex, bilateral, concavity, bifocal, convexity, bicarbonate, concavities