Various embodiments of the teachings herein include a measurement chamber for a smoke detection unit of a smoke detector. The measurement chamber may include: at least a passage for smoke to be detected; and a measurement chamber cover with angular light trap structures on an inside of the measurement chamber. The angular light trap structures are shaped to follow the compact-design principle of a Fresnel stepped lens.

Various embodiments of the teachings herein include a measurement chamber for a smoke detection unit of a smoke detector. The measurement chamber may include: at least a passage for smoke to be detected; and a measurement chamber cover with angular light trap structures on an inside of the measurement chamber. The angular light trap structures are shaped to follow the compact-design principle of a Fresnel stepped lens.

A chamberless smoke detector includes a source laser, a grating coupler, a transmitting optical phase array, a receiving optical phase array, and a processing unit.

A chamberless smoke detector includes a source laser, a grating coupler, a transmitting optical phase array, a receiving optical phase array, and a processing unit.

The present disclosure provides a self-propelled pathogen detection device in which a place where a pathogen is highly likely to be present in a space such as an inside of a facility is allowed to be configured preferentially to be a target region of detection. The self-propelled pathogen detection device according to the present disclosure comprises a housing; a detection part for detecting a pathogen; a movement mechanism for moving the housing; a position acquirement part for acquiring position information representing a current position of the housing in a space; and a control part which determines a target region in the space on the basis of traffic line information on a person in the space, and controls the movement mechanism to move the housing in the target region on the basis of the position information. The detection part detects the pathogen in the target region.

The present disclosure provides a self-propelled pathogen detection device in which a place where a pathogen is highly likely to be present in a space such as an inside of a facility is allowed to be configured preferentially to be a target region of detection. The self-propelled pathogen detection device according to the present disclosure comprises a housing; a detection part for detecting a pathogen; a movement mechanism for moving the housing; a position acquirement part for acquiring position information representing a current position of the housing in a space; and a control part which determines a target region in the space on the basis of traffic line information on a person in the space, and controls the movement mechanism to move the housing in the target region on the basis of the position information. The detection part detects the pathogen in the target region.

It is aimed to provide a technology that enables highly accurate device performance evaluation and device adjustment in optical analysis of microparticles, using the same type of beads. The present technology provides an information processing device including an information processing unit that acquires a plurality of fluorescence intensities at a plurality of light irradiation powers for a fluorescence signal from a sample including particles labeled with a fluorescent dye having a single fluorescence intensity, recognizes an intensity range of each of the plurality of fluorescence intensities detected on the basis of a fluorescence intensity balance of the sample, and calculates information relating to sensitivity of a fluorescence detection unit.

It is aimed to provide a technology that enables highly accurate device performance evaluation and device adjustment in optical analysis of microparticles, using the same type of beads. The present technology provides an information processing device including an information processing unit that acquires a plurality of fluorescence intensities at a plurality of light irradiation powers for a fluorescence signal from a sample including particles labeled with a fluorescent dye having a single fluorescence intensity, recognizes an intensity range of each of the plurality of fluorescence intensities detected on the basis of a fluorescence intensity balance of the sample, and calculates information relating to sensitivity of a fluorescence detection unit.

A fire detection apparatus 1F for detecting a fire in a monitored area, the fire detection apparatus 1F being attached to an installation surface of an installation object, the fire detection apparatus 1F comprises a detection space 60F in which detection of a detection target is performed; an incidence suppressing unit that inhibits ambient light from entering the detection space 60F, the incidence suppressing unit being able to allow a gas containing the detection target to flow into and out of the incidence suppressing unit; an accommodating unit that accommodates the incidence suppressing unit, the accommodating unit being able to allow the gas to flow into and out of the accommodating unit; and a light shielding wall 140F provided to surround the incidence suppressing unit on an inside of the accommodating unit, wherein the incidence suppressing unit includes a first incidence suppressing unit that covers a part of the detection space 60F, and a second incidence suppressing unit provided on an installation surface side of the first incidence suppressing unit, the second incidence suppressing unit covering another part of the detection space 60F, and the light shielding wall 140F is configured such that the light shielding wall overlaps a boundary between the first incidence suppressing unit and the second incidence suppressing unit when viewed in a direction orthogonal to the installation surface.

An apparatus (1) for determining quality of a platelet concentrate (PC) (15) in a PC bag (10) comprises a movable bag holder (2) to carry the PC bag (10), a light system (20) with a light source (21, 24) to direct light (22) into the platelet concentrate (15) in the PC bag (10) for a measurement interval, and a detector system (30) with a light detector (31, 32) configured to detect light (23) from the platelet concentrate 15 during the measurement interval and generate a real-time detection signal. The apparatus (1) also comprises a controller (40) configured to determine platelet swirling based on the real-time detection signal and determine a quality parameter for the platelet concentrate (15) in the PC bag (10) based on the platelet swirling.