Plane mirror

The plane mirror is mirrored on the front mirror whose reflecting surface is flat, that is approximately equivalent to a precise mathematical level. Mostly spherical surfaces are viewed with radii in the 10 - km - range plan as sufficient for practical cases.

Such mirrors are used in optical experimental setups (see Optical bench ) to deflect light rays in a different direction.

Mechanical holder

For such mirrors in optical structures are needed to under 1 micron precisely defined holder.

They use bias of spring (technology) and bearings ( machine elements).

• Bearings are defined as a rolling bearing.
• Threaded spindles allow an adjustment.
• A mirror holder consists of a fixed bearing ( sapphire ball in a hollow tetrahedron ), a floating bearing with one translational degree of freedom, a floating bearing with two translational degrees of freedom.
• A defined gimbalsuspended stock is technically composed of two stacked mirror mounts.
• A defined linear system consists of two movable bearings with a translational degree of freedom along a rail, and a third movable bearing on a second rail.
• A defined hexapod consists of a movable, a fixed frame, and six legs. The legs are connected via fixed bearing to the frame. The legs consist of two parts which are connected together by a linear system. By relaxing the spring, a component can be removed and reset exactly once again by tightening.