| 释义 |
collimate, v.|ˈkɒlɪmeɪt|
[f. ‘collīmāre’, an erroneous reading, found in some edd. of Cicero, of L. collīneāre, f. col-, com- together + līnea line, līneāre to bring into a straight line. Collīmāre long passed as a genuine word, and was adopted by some astronomers who wrote in Latin (e.g. Kepler Ad Vitellionem Paralipomena, Frankfort 1604, p. 211; Littré) and thence passed into the mod. langs. The proper word would be collineate.]
†1. (See quots.) Obs.
1623Cockeram, Collimate, to leuell or winke with one eye. 1656Blount Glossogr., Collimate, to wink with one eye, to level or aim at a mark. 1721Bailey, Collimate, to level at, or aim at a Mark [1731–90 or hit the Mark].
2. trans.
a. To place or adjust (a telescope) so that the line of sight is in the required position; to place (two telescopes, lenses, etc.) so that their optical axes are in the same line.
b. To make parallel, as a lens, the rays of light passing through it. Hence ˈcollimating ppl. a.
1837Penny Cycl. VII. 349 s.v. Collimator, The cross wires in the supplementary or collimating telescope. 1868Lockyer Elem. Astron. 244 An instrument with the cross wires perfectly adjusted is said to be correctly collimated. 1878― Stargazing 394 The little object-glass..or collimating lens, as it is called. |