It is adjusted in such a way, that the focus of the camera intersects the centre of the laser linear retroreflector
. The camera is focused on the lines of the line scale by moving the adjustment table (ZTT Theta stage) in the vertical direction.
The positions ([P.sub.H2], [P.sub.V2]) of the photodetector [PD.sub.2], which receives the beam reflected by the retroreflector
RR, are sensitive to the straightness errors in the horizontal and vertical plans.
Retroreflection is conventionally achieved by means of passive optical elements called retroreflectors
that could be of three main types: lens and mirror, corner cube (CC) and inverted cube (IC).
Viewing angle ([upsilon]) is the angle between the driver's line of sight to the sign and retroreflector
axis, which is normal to the sign surface (see Fig.
Satellite laser ranging (SLR) is a useful technique to determine the geocentric position of the retroreflector
equipped satellite using laser pulses back to the transmitting site.
Besides, this beam must track the positions of a retroreflector
. A plane mirror mounted on a high precision universal joint deflects the beam and hits the retroreflector
Leonhardt, "An omnidirectional retroreflector
based on the transmutation of dielectric singularities," Nature Materials, vol.
[3.] Bufton, J., "Scintillation statistics measured in an earth-space-earth retroreflector
A plane thin electrode can ensure a good electric contact with the polymer film and good mechanical roughness at the contact with the retroreflector
of the equipment.
The pulses are reflected by the AP15RR retroreflector
, placed on the moon surface during the Apollo 15 mission, and detected with a time resolution of 0.1 ns at the APOLLO facility.
of Electrical Engineering has resulted in a low-cost corner cube retroreflector
(CCR) for potential use in a MEMS device.
A laser is mounted on the machine bed and a retroreflector
mounted on the spindle reflects a laser beam aligned along the machine diagonal.