An optical device is provided. The optical device includes a time-of-flight (TOF) sensor array, a photon conversion thin film, and a light source. The photon conversion thin film is disposed above the time-of-flight sensor array. The light source emits light with a first wavelength towards the photon conversion thin film to be converted into light with a second wavelength received by the time-of-flight sensor array. The second wavelength is longer than the first wavelength.

An optical sensing device includes a substrate, a sensing element layer, a first planarization layer, and a second planarization layer. The sensing element layer is located on the substrate and includes a plurality of sensing elements. The first planarization layer is located on the sensing element layer and has a first slit. The second planarization layer is located on the first planarization layer and has a second slit. An orthogonal projection of the first slit extending in a direction and located on the substrate is not overlapped with an orthogonal projection of the second slit extending in the same direction and located on the substrate, and the orthogonal projection of the second slit on the substrate has a curved pattern.

A detection system (10) and a detection method (2000) are disclosed herein. The system includes a PIR sensor (12) positioned in an area comprising a plurality of sub-areas, the motion sensor comprising an optical device (22) having a plurality of sub-lenses (26, 28, 30), each sub-lens of the plurality of sub-lenses having a field of view (FOV) corresponding to a sub-area of the plurality of sub-areas. The system further includes at least one processor (32) coupled to the PIR sensor and configured to: activate the plurality of sub-lenses to generate a total sensor FOV comprising each FOV of the plurality of sub-lenses; and dynamically control the plurality of sub-lenses to subdivide the total sensor FOV, wherein the subdivided sensor FOV is smaller than the total sensor FOV.

A detection system (10) and a detection method (2000) are disclosed herein. The system includes a PIR sensor (12) positioned in an area comprising a plurality of sub-areas, the motion sensor comprising an optical device (22) having a plurality of sub-lenses (26, 28, 30), each sub-lens of the plurality of sub-lenses having a field of view (FOV) corresponding to a sub-area of the plurality of sub-areas. The system further includes at least one processor (32) coupled to the PIR sensor and configured to: activate the plurality of sub-lenses to generate a total sensor FOV comprising each FOV of the plurality of sub-lenses; and dynamically control the plurality of sub-lenses to subdivide the total sensor FOV, wherein the subdivided sensor FOV is smaller than the total sensor FOV.

Systems, methods, and apparatuses for providing electromagnetic radiation sensing using sequential beam splitting. The apparatuses can include a micro-mirror chip having a plurality of light reflecting surfaces, an image sensor having an imaging surface, and a beamsplitter unit located between the micro-mirror chip and the image sensor. The beamsplitter unit includes a plurality of beamsplitters aligned along a horizontal axis that is parallel to the micro-mirror chip and the imaging surface. The beamsplitters implement the sequential beam splitting. Because of the structure of the beamsplitter unit, the height of the arrangement of the micro-mirror chip, the beamsplitter unit, and the image sensor is reduced such that the arrangement can fit within a mobile device. Within a mobile device, the apparatuses can be utilized for human detection, fire detection, gas detection, temperature measurements, environmental monitoring, energy saving, behavior analysis, surveillance, information gathering and for human-machine interfaces.

A radiometric camera having internal black body components and a method for calibrating a radiometric camera having internal black body components. A radiometric camera includes a detector, the detector further including a thermal detector configured to capture thermal images, wherein the thermal detector is pointed in a direction, wherein the radiometric camera is adapted to receive at least one black body element in front of the detector with respect to the direction of the thermal detector, the thermal detector having a plurality of portions including at least one first portion, wherein the at least one black body element affects radiation readings by the at least one first portion of a plurality of portions of the thermal detector when disposed in the radiometric camera.

A cigarette temperature detection device including multiple cylindrical convex lenses is provided, wherein each of the cylindrical convex lenses has a thicker central wall between two thinner end walls formed by rotating a parallel line at a predetermined distance around a long axis of an elliptical-like section resulting from cutting the circular convex lens by a plane perpendicular to a centerline. The disclosed cigarette temperature detection device allows accurate and reliable detection of a temperature of an entire circumferential surface of a cigarette on site.

A cigarette temperature detection device including multiple cylindrical convex lenses is provided, wherein each of the cylindrical convex lenses has a thicker central wall between two thinner end walls formed by rotating a parallel line at a predetermined distance around a long axis of an elliptical-like section resulting from cutting the circular convex lens by a plane perpendicular to a centerline. The disclosed cigarette temperature detection device allows accurate and reliable detection of a temperature of an entire circumferential surface of a cigarette on site.

An occupancy sensor device may comprise a lens having a rated focal length, the lens to refract infrared radiation to converge at a point at the rated focal length; a passive infrared (PIR) sensor comprising detecting elements; and a body coupled with the lens and the PIR sensor to fix a distance between the lens and the PIR sensor, wherein the distance is less than a rated focal length of the lens and between the rated focal length of the lens and the lens, and the detecting elements of the PIR sensor are positioned to capture infrared radiation refracted by the lens. Some embodiments comprise a PIR sensor comprising an exposure area to capture infrared radiation incident to the exposure area; the PIR sensor comprising a first circuit board and a second circuit board coupled with the PIR sensor, the second circuit board perpendicular to the first circuit board.

An infrared (IR) imaging system for determining a concentration of a target species in an object is disclosed. The imaging system can include an optical system including a focal plane array (FPA) unit behind an optical window. The optical system can have components defining at least two optical channels thereof, said at least two optical channels being spatially and spectrally different from one another. Each of the at least two optical channels can be positioned to transfer IR radiation incident on the optical system towards the optical FPA. The system can include a processing unit containing a processor that can be configured to acquire multispectral optical data representing said target species from the IR radiation received at the optical FPA. One or more of the optical channels may be used in detecting objects on or near the optical window, to avoid false detections of said target species.