US 11,747,277 B2
Optical component for an interferometric imaging device
Cyrielle Monpeurt, Grenoble (FR); Marine Beurrier-Bousquet, Grenoble (FR); Mathieu Dupoy, Coublevie (FR); and Gabriel Jobert, Grenoble (FR)
Assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed by COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed on Dec. 20, 2021, as Appl. No. 17/645,154.
Claims priority of application No. 20 13816 (FR), filed on Dec. 21, 2020.
Prior Publication US 2022/0196901 A1, Jun. 23, 2022
Int. Cl. G01N 21/45 (2006.01); G01J 5/0818 (2022.01); G01N 21/35 (2014.01); F21V 8/00 (2006.01); G01J 5/00 (2022.01)
CPC G01N 21/45 (2013.01) [G01J 5/0818 (2013.01); G01N 21/35 (2013.01); G02B 6/0035 (2013.01); G01J 2005/0077 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An optical component for an interferometric imaging device, comprising:
an object arm, comprising a first planar waveguide extending parallel to a plane called the plane of the optical component, and at least one first diffraction grating formed in the first planar waveguide and capable of extracting light from the first planar waveguide and from the object arm; and
a reference arm, comprising a second planar waveguide extending parallel to the plane of the optical component, and at least one second diffraction grating formed in the second planar waveguide and capable of extracting light from the second planar waveguide and from the reference arm,
wherein at least part of the light extracted from the object arm reflects off an optically reflective surface that extends parallel to the plane of the optical component and is positioned between the object arm and the reference arm and interferes with at least part of the light extracted from the reference arm that reflects off the optically reflective surface, and
wherein the interference between the light from the object arm and light from the reference arm occurs at a position between the object arm and reference arm.