Patent ID: 8144335
Filing Date: 2012-03-27
Classification: G01B

Abstract:
1. A vibration-insensitive interferometer using a high-speed camera and a continuous phase scanning method, the interferometer measuring a measurement target by isolating influences of externally occurring vibrations from a frequency domain, comprising: a light source unit for emitting light; a light transmission unit for radiating the light emitted from the light source unit to the measurement target, splitting light reflected from the measurement target into reference light and measurement light, and allowing the reference light and the measurement light to interfere with each other, thus generating an interference fringe; a continuous phase scanning unit for radiating the reference light split by the light transmission unit through continuous phase scanning; and a high-speed camera for acquiring an interference fringe generated by both the measurement light radiated through the light transmission unit and the reference light radiated through the continuous phase scanning unit.