Goniometer for high precision angular alignment
Thorlabs
1° Graduation Marks on Side
Backlash-Free Spring-Loaded Design
Fully Lockable
A goniometer or goniometric stage is a device used to rotate an object precisely, within a small angular range, about a fixed point in space. Goniometers are similar to linear stages, but, rather than providing linear movement, the stage partially rotates about a fixed point above the mounting surface of the stage. In our two product lines, the distance from the point of rotation to the mounting surface was designed so that two different goniometer models may be stacked in an X-Y configuration and both stages will rotate about the same point. Our goniometers use a backlash-free leadscrew in the smaller GN series and a precision micrometer for enhanced angular positioning of the top plate in the larger GNL series.
Our goniometers offer unobstructed, pure rotational motion about their point of rotation over the angle of rotation (see image to the right). The compact, stackable design allows one model to be fastened to the top plate of another aligning their points of rotation. In the GN series, the GN05 mounts atop the GN1. In the GNL series, the GNL10 mounts atop the GNL18. These two axis stage setups can be purchased as a single package (GN2 or GNL20 respectively) at a cost savings.
The precision dovetail design, accompanied by a backlash-free lead screw and a vernier scale, provides accurate and repeatable positioning. A side mounted setscrew can be used to lock the platform in position.
The GN series goniometers provide a generous array of taps including 4-40 (M2.5) and 6-32 (M3) for mounting. Alternatively, the GNL series offers 4-40 (M2.5) and 6-32 (M4) taps. See below or the Specs tab for mounting hole position. Our PM1 and PM2 clamping arms feature either 6-32 or M4 threads, allowing them to be attached to most goniometers.
