collimation
[kɒli'meiʃәn]
n. 校准, 准

[] 准

1. Experiments show a strong effect on the measured value if collimation angle is increased.
   验，准测值很影响。
2. The error introduced by a finite collimation angle is a systematic one in apparent transmission.
   准带误差括透种系统误差。
3. The following table lists Ocean Optics Collimation Testers by product code, aperture size and price.
   剪板准测仪供即测。校准系统里波，简单~45?置测试仪。

collimation
[ noun ]
the accurate adjustment of the line of sight of a telescope
<noun.act>




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 axial line of the telescope of an instrument,
into its proper position relative to the other parts of the
instrument.

{Error of collimation}, the deviation of the line collimation
of an astronomical instrument from the position it ought
to have with respect to the axis of motion of the
instrument.

{Line of collimation}, the axial line of the telescope of an
astronomical or geodetic instrument, or the line which
passes through the optical center of the object glass and
the intersection of the cross wires at its focus.