optic axis
— Navneord
– Engelsk
~ in a doubly refracting crystal, the line in the direction of which no double refraction occurs; "a crystal may have either one or two optic axes"
optic disk
— Navneord
– Engelsk
~ the point where the optic nerve enters the retina; not sensitive to light
optic nerve
— Navneord
– Engelsk
~ the cranial nerve that serves the retina
optic axis
— Navneord
– Engelsk
~ a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted; "in a normal eye the optic axis is the direction in which objects are seen most distinctly"
optic cup
— Navneord
– Engelsk
~ (embryology) a two-walled cuplike depression that develops into the pigmented and sensory layers of the retina
optical fiber
— Navneord
– Engelsk
~ a very thin fiber made of glass that functions as a waveguide for light; used in bundles to transmit images
optical flint
— Navneord
– Engelsk
~ optical glass of high dispersion and high refractive index
optical crown
— Navneord
– Engelsk
~ optical glass of low dispersion and low refractive index
optical glass
— Navneord
– Engelsk
~ clear homogeneous glass of known refractive index; used to make lenses
optical density
— Navneord
– Engelsk
~ (physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation
optical disk
— Navneord
– Engelsk
~ a disk coated with plastic that can store digital data as tiny pits etched in the surface; is read with a laser that scans the surface
optical bench
— Navneord
– Engelsk
~ apparatus for observation and measurement of optical phenomena
optical fusion
— Navneord
– Engelsk
~ the combining of images from the two eyes to form a single visual percept
optical device
— Navneord
– Engelsk
~ a device for producing or controlling light
optical disc
— Navneord
– Engelsk
~ a disk coated with plastic that can store digital data as tiny pits etched in the surface; is read with a laser that scans the surface
optical condenser
— Navneord
– Engelsk
~ lens used to concentrate light on an object
optical aberration
— Navneord
– Engelsk
~ an optical phenomenon resulting from the failure of a lens or mirror to produce a good image
optical illusion
— Navneord
– Engelsk
~ an optical phenomenon that results in a false or deceptive visual impression