Light interference generator and interference imaging device
AssigneeNational Institute of Information and Communications Technology
InventorTatsuki Tahara
Life of this patent
Estimating the term…
Abstract
An interference imaging device includes a light interference generator that includes: a light wave splitter configured to reflect a part of incident light and to allow a remaining part of the incident light to pass through; a phase modulator configured to modulate a phase of incident light that has passed through the light wave splitter; and a reflector configured to reflect the phase-modulated incident light from the phase modulator so that the reflected, phase-modulated incident light overlaps with incident light that has been reflected by the light wave splitter.
Claims17
A light interference generator of a common-path light interference generator that generates interference light from incident light, the light interference generator comprising:
- a light wave splitter configured to reflect a part of the incident light and allow a remaining part of the incident light to pass through the light wave splitter;
- a phase modulator configured to modulate a phase of incident light that has passed through the light wave splitter;
- and
- a reflector configured to reflect the phase-modulated incident light from the phase modulator so that the reflected, phase-modulated incident light overlaps with incident light that has been reflected by the light wave splitter.
An interference imaging device comprising:
- a light interference generator that is a common-path light interference generator and is configured to generate interference light from incident light;
- an interference light detector configured to detect the interference light generated by the light interference generator;
- and
- a calculation unit configured to generate a complex amplitude image from the detected interference light,
- wherein the light interference generator includes:
- a light wave splitter configured to split the incident light into two light waves;
- a phase modulator configured to allow to pass therethrough or modulate a phase of first split light of the incident light that has been split by the light wave splitter and to allow to pass therethrough or modulate a phase of second split light of the incident light that has been split by the light wave splitter;
- and
- a light wave coupler configured to combine the first split light and the second split light that are transmitted from the phase modulator to form the interference light, and
- wherein the calculation unit is configured to make, with a predetermined phase modulation pattern, the phase modulator perform phase modulation that is wavelength dependent and to generate the complex amplitude image from the interference light with a computational coherent superposition or a Fourier spectroscopy algorithm.
An interference imaging device comprising:
- a light interference generator that is a common-path light interference generator and is configured to generate interference light from incident light;
- an interference light detector configured to detect the interference light generated by the light interference generator;
- and
- a calculation unit configured to generate a complex amplitude image from the detected interference light,
- wherein the light interference generator includes:
- a light wave splitter configured to split the incident light into two light waves;
- and
- a phase modulator configured to modulate a phase of first split light of the incident light that has been split by the light wave splitter, overlap the first split light with second split light of the incident light that has been split by the light wave splitter to form the interference light, and output the interference light, and
- wherein the calculation unit is configured to make, with a predetermined phase modulation pattern, the phase modulator perform phase modulation that is wavelength dependent and to generate the complex amplitude image from the interference light with a computational coherent superposition or a Fourier spectroscopy algorithm.
Dependencies are inferred from the claim text.