An optical module 1 includes: a mirror unit 2 including a base 21, a movable mirror 22, and a fixed mirror 16; a beam splitter unit 3 that is disposed on one side of the mirror unit 2 in a Z-axis direction; a light incident unit 4 that causes measurement light L0 to be incident to the beam splitter unit 3; a first light detector 6 that is disposed on the one side of the beam splitter unit 3 in the Z-axis direction, and detects interference light L1 of measurement light which is emitted from the beam splitter unit 3; a support 9 to which the mirror unit 2 is attached; a first support structure 11 that supports the beam splitter unit 3; and a second support structure 12 that is attached to the support 9 and supports the first light detector 6.

Novel monolithic reflective spatial heterodyne spectrometers (SHS) interferometer systems are presented. Monolithic systems in accordance with the invention have a single supporting structure wherein input optics, output optics, a flat mirror, a roof mirror, and a symmetric grating are affixed. Embodiments of the invention contain only fixed parts, and the optics do not move in relation to the supporting structure. Embodiments of the present invention enables smaller, lighter, and more robust reflective SHS systems as compared to conventional interferometry. Additionally, embodiments of the present invention require less time and skill for construction and maintenance, and is a better economic option. Additional embodiments can include multiple interferometer systems in a single supporting structure.

This document describes techniques and devices for blood-solute calculation with a mobile device using non-invasive spectroscopy. A mobile device (502) includes a light source (504) that emits light toward an interferometer (508) that uses mirrors to separate and recombine the light. The interferometer directs the recombined light toward a person. Light reflected from, or transmitted through, the person is received through a reception port (506) to a photodetector (510) that outputs photodetector data that corresponds to a measured light intensity of the reflected and transmitted light as a function of a path length of the light or a mirror position of the interferometer. Based on the photodetector data, an interferogram is generated. Applying a technique such as a Fourier transform to the interferogram, a spectrum data set of the reflected and transmitted light is generated. Based on the spectrum data set, a concentration of solutes in the person's blood is calculated.

State-of-the-art portable Raman spectrometers use discrete free-space optical components that must be aligned well and that don't tolerate vibrations well. Conversely, the inventive spectrometers are made with monolithic photonic integration to fabricate some or all optical components on one or more planar substrates. Photonic integration enables dense integration of components, eliminates manual alignment and individual component assembly, and yields superior mechanical stability and resistance to shock or vibration. These features make inventive spectrometers especially suitable for use in high-performance portable or wearable sensors. They also yield significant performance advantages, including a large (e.g., 10,000-fold) increase in Raman scattering efficiency resulting from on-chip interaction of the tightly localized optical mode and the analyte and a large enhancement in spectral resolution and sensitivity resulting from the integration of an on-chip Fourier-transform spectrometer.

In an optical device, an elastic support unit includes a pair of levers which face in a second direction perpendicular to a first direction, a pair of first torsion support portions which are connected between the levers and the base, a pair of second torsion support portions which are connected between the pair of levers and the movable unit, and a first link member that bridges the levers. The levers and the first link member define a light passage opening. Each of connection positions between the levers and the first torsion support portions is located on a side opposite to the movable unit with respect to the center of the light passage opening in a third direction perpendicular to the first direction and the second direction. A maximum width of the light passage opening in the second direction is defined by a gap between the levers in the second direction.

An interferometer system comprises a light redirecting system for splitting an input light beam into two secondary light beams to respectively propagate along a first optical arm and a second optical arm, and for recombining the secondary light beams after exiting the optical arms. The interferometer system also comprises a multipass optical cell positioned at the second optical arm for effecting a predetermined optical path length within the second arm.

The disclosure relates to an interferometer including a substrate, and an intermediate layer region applied on the substrate. A first mirror device and a second mirror device are aligned plane-parallel with one another and are separated from one another by a first distance and are framed in or on the intermediate layer region, the intermediate layer region removed in at least one of an inner region below the first mirror device and below the second mirror device. A laterally structured electrode including a first subregion and a second laterally separated subregion which are configured to be connected to different electrical potentials. The electrode arranged at a second distance from the first or the second mirror device, the first subregion extending in the inner region and arranged on the intermediate layer region and the second subregion extending in an outer region of the intermediate layer region.

The present invention relates to a housing of a Michelson interferometer that may facilitate optical alignment of a plurality of optical components by applying a two-part structured housing to the Michelson interferometer. The present invention may provide a Michelson interferometer housing system including a first housing including a first surface on which a fixed mirror is installed, a second surface perpendicular to the first surface, and a first diagonal surface on which a beam splitter assembly to which light is incident from the outside is installed, the first diagonal surface being formed at 45 degrees with respect to the second surface; and a second housing including a third surface on which a movable mirror is installed, a fourth surface perpendicular to the third surface, and a second diagonal surface corresponding to the first diagonal surface, wherein the first and second housings are combined such that the first and second diagonal surfaces face each other to allow the light entering from the outside to be divided through the beam splitter assembly and incident to the fixed mirror and the movable mirror.

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.

A microelectromechanical (MEMS) interferometer is provided. The MEMS interferometer includes a pair of movable mirrors that are positioned along perpendicular axes, wherein each of the pair of movable mirrors is coupled to a mechanism. The mechanism includes an electrostatic actuator driving a displacement amplification mechanism, and the displacement amplification mechanism driving each of the pair of the movable mirrors. The MEMS interferometer includes a beam splitter that is positioned at an intersection of the perpendicular axes extending through each movable mirror and the beam splitter. The MEMS interferometer also includes a metasurface microbolometer placed in line with the beam splitter to measure an intensity of a recombined beam from the pair of movable mirrors.