Laser Interferometry Position Detection for Large Holder Strokes

Instead of positioning additional measuring mirrors in the working space to extend measurement range, the patent inverts the approach by making the optical device movable and attaching it to the holder. This allows the measurement system to move with the holder rather than having stationary mirrors cover the entire workspace, thus avoiding work volume occupation while maintaining adaptability for large displacement distances.

The patent applies dynamics by making the optical device movable rather than stationary. The optical device is attached to the holder and moves together with it during displacement. This dynamic configuration allows a single optical device to cover large measurement strokes without requiring multiple stationary interferometer sensors, thereby reducing system complexity while maintaining measurement coverage.

The patent resolves this contradiction by making the optical device dynamic rather than fixed. The optical device is attached to the holder and moves together with it, allowing the measurement area to expand beyond the static mirror size limitation. This maintains system stability through controlled movement while significantly increasing the measurement area coverage for large displacement distances.

The optical device serves itself by being attached to the holder. As the holder moves through large displacements, the optical device moves with it, maintaining the interferometry signal connection throughout the entire stroke. This self-service configuration eliminates signal loss that would occur with stationary mirrors, allowing the system to handle holder strokes larger than the original mirror size.