A linear stage is a component of a precision motion system that constrains an object to one axis of motion. A linear stage consists of a platform and a base connected by some form of guide rail or linear bearings that allow the platform to move linearly relative to the base. The position of the linear stage is usually controlled by a linear actuator, such as a guide rod, electric motor, or hydraulic/pneumatic system.
Using the linear stage has the following benefits in precision engineering:
They enable position and motion with high precision, repeatability and resolution.
They can accommodate high load capacities and unlimited travel ranges.
They reduce friction, wear and backlash compared to rotary motion systems.
They simplify the design and control of complex motion systems.
Some examples of applications using the linear stage are:
Optics and photonics, such as fiber alignment, laser scanning, microscopes and spectrometers.
Semiconductor manufacturing, such as photolithography, wafer inspection and testing.
Biomedical engineering, such as DNA sequencing, cell manipulation and drug delivery.
Industrial automation such as assembly, packaging and printing.