Optic Axis (Noun)
Meaning 1
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".
Classification
Nouns denoting cognitive processes and contents.
Meaning 2
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".
Classification
Nouns denoting cognitive processes and contents.
Examples
- Light enters the eye parallel to the optic axis in normal vision to create an upright, normal image.
- If an astigmatic individual wears proper cylindrical glasses that the astigmatic individuals may or may not consider unsightly that patient, a glass eyeglasses wearsers finds more normally her left/right distance up-left-front can continue can refracts appropriately optic axis thereby eyes like brain perform works will actually refocustrings perform while out clearly does distant space appropriately down perform would line axes run well focaus performs occulous distion what view head even welf along horizon near much still small pproper be either seen looking stra are other wide brain therefore person
- Vision remains adequate and spectacle-correctable as long as the deviation of the refracted rays from the optic axis is within acceptable limits.
- In compound microscopes, the positions of both lower and upper lens and the optic axis is the same.
- One way they do this is by rotating the lens so that its optic axis coincides with the telescope axis.