INTERFEROMETER USING ASYMMETRICAL POLARIZATION CAPABLE OF CONTROLLING THE CONTRAST RATIO OF INTERFERENCE PATTERN THAT IS GENERATED DUE TO INTERFERENCE LIGHT WHICH APPROACHES AN IMAGE PICK-UP DEVICE AND AN OPTICAL DEVICE USING THE SAME

摘要

PURPOSE: An interferometer using asymmetrical polarization and an optical device using the same are provided to allow polarization to penetrate by the interference light, thereby controlling the contrast of interference pattern that an object light and a reference light form in the image pick-up device.;CONSTITUTION: An interferometer using asymmetrical polarization includes a first wavelength plate (370), a first polarization beam splitter (310), a second wavelength plate (340), a third wavelength plate (350), a object to be measured (320), a reference mirror (330), and a first polarization plate (360). The first wavelength plate is installed in the progressive direction of light that is generated in a light source. The first polarization beam splitter reflects part of light that is passed through the first wavelength plate in a first direction, and penetrates part of light in a second direction. The second wavelength plate is arranged in the progressive direction of light that is reflected to the first direction. The third wavelength plate is arranged in the progressive direction of light that is penetrated in the second direction. The object to be measured is arranged in the progressive direction of light that is passed though the second wavelength plate. The reference mirror is arranged in the progressive direction of light that is passed though the third wavelength plate.;COPYRIGHT KIPO 2013