The present disclosure provides a human body detecting device capable of increasing the sensitivity. Multiple first infrared ray reception paths are defined by any one of multiple lenses and multiple detecting units. Multiple second infrared ray reception paths are defined by one lens adjacent to the any one of multiple lenses and multiple detecting units. Lens array is configured so that one of multiple first infrared ray reception paths and one of multiple second infrared ray reception paths overlap with each other. The front-side electrodes of detecting units respectively corresponding to one first infrared ray reception path and one second infrared ray reception path of the multiple detecting units have the same polarity.

A motion sensor has at least two tiers of monitored volumes that are offset from each other. Electromagnetic radiation, such as infrared light, is directed from the monitored volumes onto at least two sets of detector elements having separate outputs on a pyroelectric substrate of an infrared detector. As a warm object, such as a human or an animal, moves through the monitored volumes, the warmth from the object causes the voltage on the outputs of the infrared detector to change. The resultant waveforms are compared and if the two waveforms have a phase relationship corresponding to a critical phase angle that is based on the pitch of the monitored volumes and the offset between the tiers of monitored volumes, an animal-immune motion indication is generated.

A motion sensor has at least two tiers of monitored volumes that are offset from each other. Electromagnetic radiation, such as infrared light, is directed from the monitored volumes onto at least two sets of detector elements having separate outputs on a pyroelectric substrate of an infrared detector. As a warm object, such as a human or an animal, moves through the monitored volumes, the warmth from the object causes the voltage on the outputs of the infrared detector to change. The resultant waveforms are compared and if the two waveforms have a phase relationship corresponding to a critical phase angle that is based on the pitch of the monitored volumes and the offset between the tiers of monitored volumes, an animal-immune motion indication is generated.

The present disclosure provides a human body detecting device capable of increasing the sensitivity. Multiple first infrared ray reception paths are defined by any one of multiple lenses and multiple detecting units. Multiple second infrared ray reception paths are defined by one lens adjacent to the any one of multiple lenses and multiple detecting units. Lens array is configured so that one of multiple first infrared ray reception paths and one of multiple second infrared ray reception paths overlap with each other. The front-side electrodes of detecting units respectively corresponding to one first infrared ray reception path and one second infrared ray reception path of the multiple detecting units have the same polarity.

A multimodal and highly compact human presence detector that includes, on a same silicon chip made using CMOS technology, a first array of pixels, made sensitive to far-infrared radiation by depositing a pyroelectric layer, converting the received far-infrared radiation into electrical charges, juxtaposed with at least one second array of pixels sensitive to visible light, converting the received visible light into electrical charges, and a circuit for reading the charges generated in each of the arrays by the visible light or the far-infrared radiation, the detector further including, on top of the silicon chip, an optical element for focusing the far-infrared radiation on the first array, and an optical element for focusing the visible light on the second array.

A flame detector includes a beam splitter to split mid-wave infrared radiation (MWIR) and long-wave infrared radiation (LWIR) into an MWIR component and an LWIR component. An MWIR detector detects the MWIR component and an LWIR detector detects the LWIR component. The flame detector analyzes the MWIR component to determine the presence of a flame and analyzes the LAIR component to determine whether the system is functioning properly.

A system including a pyroelectric sensor further including an enclosure, a positive pyroelectric sensing element located within the enclosure, a negative pyroelectric sensing element located adjacent the positive pyroelectric sensing element within the enclosure and a window disposed in the enclosure having an elongated shape with a width of the window parallel to a line joining the respective centers of the sensing elements and the length perpendicular to the line wherein the window is centered over the sensing elements to conduct infrared energy from an external source onto the sensing elements and wherein the width of the window is less than the combined widths of the sensing elements plus any space separating the sensing elements.

A thermal sensor device using a combination of thermopile and pyroelectric sensors is disclosed. The combination is achieved in a process flow that includes ferroelectric materials, which may be used as a pyroelectric sensor, and p-poly/n-poly for thermopiles. The combination retains the sensitivity and accuracy of the thermopile sensor and speed of pyroelectric sensors. The combination provides lower noise than individual thermopile sensors and results in a higher signal-to-noise ratio.

A thermal sensor device using a combination of thermopile and pyroelectric sensors is disclosed. The combination is achieved in a process flow that includes ferroelectric materials, which may be used as a pyroelectric sensor, and p-poly/n-poly for thermopiles. The combination retains the sensitivity and accuracy of the thermopile sensor and speed of pyroelectric sensors. The combination provides lower noise than individual thermopile sensors and results in a higher signal-to-noise ratio.

A version of the invention comprises a device for controlling or interfacing with a computer or other form of communicable machine based on the pyroelectric effect, and includes at least one optically- and infrared- (IR-) transparent graphene electrode.