An imaging device includes: a sensor to detect a first target spectrum, the first target spectrum corresponding to a thermal imaging region of an infrared (IR) spectrum; and an optical device to transmit external light to the sensor, the optical device including: a substrate; and a plurality of nanostructures on the substrate, and to collimate at least the first target spectrum in the external light on the sensor. The plurality of nanostructures are spaced apart from each other, and at least one of the plurality of nanostructures has a different geometric size from that of another.

An imaging device includes: a sensor to detect a first target spectrum, the first target spectrum corresponding to a thermal imaging region of an infrared (IR) spectrum; and an optical device to transmit external light to the sensor, the optical device including: a substrate; and a plurality of nanostructures on the substrate, and to collimate at least the first target spectrum in the external light on the sensor. The plurality of nanostructures are spaced apart from each other, and at least one of the plurality of nanostructures has a different geometric size from that of another.

A surgical system includes a first detector that includes a first array of pixels configured to detect light reflected by a surgical instrument and generate a first signal comprising a first dataset representative of a visible image of the surgical instrument. The surgical system also includes a second detector, comprising a second array of pixels configured to detect infrared radiation produced by the surgical instrument during a procedure using the surgical instrument and generate a second signal comprising a second dataset representative of an infrared image of the surgical instrument. The surgical system further includes a processor configured to receive the first and second signals, identify from the first dataset data representative of the surgical instrument, and identify from the second dataset data representative of one or more regions of the surgical instrument above a predetermined threshold temperature. The processor is also configured to generate a modified image of the surgical instrument based on data identified from the first and second dataset. The modified image includes visible indicia in the one or more region of the surgical instrument at or above the predetermined temperature.

An imaging device includes: a sensor to detect a first target spectrum, the first target spectrum corresponding to a thermal imaging region of an infrared (IR) spectrum; and an optical device to transmit external light to the sensor, the optical device including: a substrate; and a plurality of nanostructures on the substrate, and to collimate at least the first target spectrum in the external light on the sensor. The plurality of nanostructures are spaced apart from each other, and at least one of the plurality of nanostructures has a different geometric size from that of another.

An imaging device includes: a sensor to detect a first target spectrum, the first target spectrum corresponding to a thermal imaging region of an infrared (IR) spectrum; and an optical device to transmit external light to the sensor, the optical device including: a substrate; and a plurality of nanostructures on the substrate, and to collimate at least the first target spectrum in the external light on the sensor. The plurality of nanostructures are spaced apart from each other, and at least one of the plurality of nanostructures has a different geometric size from that of another.

An imaging device includes: a sensor to detect a first target spectrum, the first target spectrum corresponding to a thermal imaging region of an infrared (IR) spectrum; and an optical device to transmit external light to the sensor, the optical device including: a substrate; and a plurality of nanostructures on the substrate, and to collimate at least the first target spectrum in the external light on the sensor. The plurality of nanostructures are spaced apart from each other, and at least one of the plurality of nanostructures has a different geometric size from that of another.

An integrated photonics chip for thermal imaging comprises a photonics substrate including a plurality of receiver elements. Each receiver element comprises a first grating coupler optically coupled to a first waveguide filter and configured to receive a first wavelength of light at a given angle, with the first waveguide filter configured to pass the first wavelength of light; and a second grating coupler optically coupled to a second waveguide filter and configured to receive a second wavelength of light at the given angle, with second waveguide filter configured to pass the second wavelength of light. Each receiver element receives the wavelengths of light from an object of interest that emits the light due to blackbody radiation, and receives the wavelengths of light at respectively different angles. Each grating coupler receives a unique wavelength of light with respect to the other wavelengths of light received by the other grating couplers.

One embodiment provides a heat conveyance system, including: a top plate having a length dimension, a width dimension, and a depth dimension, wherein the length dimension is greater than the width dimension; at least two side plates, wherein each of the two side plates is mechanically coupled to a bottom face of the top plate in a lengthwise direction and wherein, when mechanically coupled, the at least two side plates are in a perpendicular direction with respect to the top plate and have a space between the at least two side plates; and at least three sealing pieces located between and mechanically coupled to two adjacent side plates.

A combined optical system for determining temperature of the surface of an object or material and its distance with respect to a predetermined reference point associated with the system includes an optical radiation source emitting optical probe radiation at a predetermined wavelength or in a predetermined wavelength range, a source control unit controlling switching of the source from an operative condition, in which it emits optical probe radiation, to an inoperative condition, in which it does not emit optical probe radiation, optical detectors acquiring scattered optical radiation and thermally emitted optical radiation from the surface of the object or material, and a processing unit determining the distance of the surface of the object/material based on scattered optical probe radiation when the source is operative, and the local temperature of the surface of the object/material on the basis of thermally emitted optical radiation when the source is inoperative.

An image sensor includes on a support a plurality of first pixels and a plurality of second pixels intended to detect an infrared radiation emitted by an element of a scene. Each of the pixels includes a bolometric membrane suspended above a reflector covering the support, wherein the reflector of each of the first pixels is covered with a first dielectric layer, and the reflector of each of the second pixels is covered with a second dielectric layer differing from the first dielectric layer by its optical properties.