collimating
21principal point — As it relates to photography, it is the foot of the perpendicular to the photo plane through the perspective center. Generally, it is determined by the intersection of the lines joining opposite or diagonal collimating or fiducial marks. See also …
22Campani's eyepiece — eyepiece eye piece eye piece eye piece , n. (Opt.) The lens, or combination of lenses, at the eye end of a microscope, telescope or other optical instrument, through which the image formed by the mirror or object glass is viewed. Syn: ocular.… …
23Collimation — Col li*ma tion, n. [Cf. F. collimation, fr. a false reading (collimare) for L. collineare to direct in a straight line; col + linea line. Cf. {Collineation}.] The act of collimating; the adjustment of the line of the sights, as the axial line of… …
24Erecting eyepiece — eyepiece eye piece eye piece eye piece , n. (Opt.) The lens, or combination of lenses, at the eye end of a microscope, telescope or other optical instrument, through which the image formed by the mirror or object glass is viewed. Syn: ocular.… …
25Error of collimation — Collimation Col li*ma tion, n. [Cf. F. collimation, fr. a false reading (collimare) for L. collineare to direct in a straight line; col + linea line. Cf. {Collineation}.] The act of collimating; the adjustment of the line of the sights, as the… …
26eye-piece — eyepiece eye piece eye piece eye piece , n. (Opt.) The lens, or combination of lenses, at the eye end of a microscope, telescope or other optical instrument, through which the image formed by the mirror or object glass is viewed. Syn: ocular.… …
27eyepiece — eye piece eye piece eye piece , n. (Opt.) The lens, or combination of lenses, at the eye end of a microscope, telescope or other optical instrument, through which the image formed by the mirror or object glass is viewed. Syn: ocular. [1913… …
28eyepiece — eye piece eye piece eye piece , n. (Opt.) The lens, or combination of lenses, at the eye end of a microscope, telescope or other optical instrument, through which the image formed by the mirror or object glass is viewed. Syn: ocular. [1913… …
29Huyghenian — eyepiece eye piece eye piece eye piece , n. (Opt.) The lens, or combination of lenses, at the eye end of a microscope, telescope or other optical instrument, through which the image formed by the mirror or object glass is viewed. Syn: ocular.… …
30Line of collimation — Collimation Col li*ma tion, n. [Cf. F. collimation, fr. a false reading (collimare) for L. collineare to direct in a straight line; col + linea line. Cf. {Collineation}.] The act of collimating; the adjustment of the line of the sights, as the… …
