Radiation sensor including a detection assembly and a chopper assembly, which are mechanically coupled to delimit a main cavity; and wherein the chopper assembly includes: a suspended movable structure, which extends in the main cavity; and an actuation structure, which is electrically controllable to cause a change of position of the suspended movable structure. The detection unit includes a detection structure, which faces the main cavity and includes a number of detection devices. The suspended movable structure includes a first shield of conductive material, which shields the detection devices from the radiation, the shielding of the detection devices being a function of the position of the suspended movable structure.

A photometer includes a luminous flux splitter that splits a luminous flux incident from a single light receiving optical system and guides the luminous flux to a finder optical system and a photometric part. A light receiver is arranged at a position to receive at least a part of light split into the finder optical system by the luminous flux splitter and generates an output for light emission profile analysis according to a light reception result.

A spectral imaging system configured to obtain spectral measurements in a plurality of spectral regions is described herein. The spectral imaging system comprises at least one optical detecting unit having a spectral response corresponding to a plurality of absorption peaks of a target chemical species. In an embodiment, the optical detecting unit may comprise an optical detector array, and one or more optical filters configured to selectively pass light in a spectral range, wherein a convolution of the responsivity of the optical detector array and the transmission spectrum of the one or more optical filters has a first peak in mid-wave infrared spectral region between 3-4 microns corresponding to a first absorption peak of methane and a second peak in a long-wave infrared spectral region between 6-8 microns corresponding to a second absorption peak of methane.

Apparatus for determining an agricultural condition in an agricultural environment, the apparatus including one or more processing devices configured to acquire spectral data by measuring sample radiation at least one of reflected from and transmitted through an agricultural sample obtained from the agricultural environment, use the spectral data and at least one computational model to determine an agricultural condition, the computational model embodying relationships between the spectral data and different agricultural conditions and use the agricultural condition to determine an indicator indicative of at least one of: the agricultural condition and an intervention to improve the agricultural condition.

A color measurement apparatus includes an opening portion forming member that is a member in which an opening portion for causing light arriving from a measurement target to enter inside the apparatus is formed, and that is arranged on a bottom surface at a time of measurement performed by the apparatus, an incident light processing portion that processes light incident through the opening portion, and a shutter unit configured to be displaced between a closed position at which the opening portion is covered, in which the shutter unit includes a shutter member that closes the opening portion when the shutter unit is at the closed position, a shutter holding member that holds the shutter member such that the shutter member is configured to be displaced in a direction of approaching to and separating from the opening portion, and a pressing member that presses the shutter member toward the opening portion.

A color measurement apparatus includes an opening portion forming member that is a member in which an opening portion for causing light arriving from a measurement target to enter inside the apparatus is formed, and that is arranged on a bottom surface at a time of measurement performed by the apparatus, an incident light processing portion that processes light incident through the opening portion, a shutter unit that is a unit configured to be displaced between a closed position at which the opening portion is covered, and an open position at which the opening portion is open, and that includes a reflection reference surface used as a reference of reflectance at a position facing the opening portion, and a detection section that detects changes in a detection signal to be output in accordance with displacement of the shutter unit.

A color measurement apparatus includes an opening portion forming member that is a member in which an opening portion for causing light arriving from a measurement target to enter inside the apparatus is formed, and that is arranged on a bottom surface at a time of measurement performed by the apparatus, an incident light processing portion that processes light incident through the opening portion, a battery that supplies power to the incident light processing portion, and a first circuit substrate on which a wireless communication portion is mounted, in which in a view from a first direction that is a vertical direction intersecting with the bottom surface and an upper surface which is a surface on an opposite side from the bottom surface, the first circuit substrate and the battery have an overlapping part.

A color measurement apparatus includes an incident light processing portion that processes light incident through the opening portion, a light emission portion that emits light toward the measurement target, a first circuit substrate in which the incident light processing portion is disposed, a second circuit substrate in which the light emission portion is disposed, and a frame assembly that is formed of a metal material, and in which the first circuit substrate and the second circuit substrate are disposed, in which the frame assembly includes a main frame that forms a base of the apparatus, a first subframe that holds the first circuit substrate, and a second subframe that holds the second circuit substrate, and the first subframe and the second subframe are in direct or indirect contact with the main frame.

A color measurement apparatus includes an opening portion forming member that is a member in which an opening portion for causing light arriving from a measurement target to enter inside the apparatus is formed, and that is arranged on a bottom surface at a time of measurement performed by the apparatus, the opening portion for causing the light arriving from the measurement target to enter inside the apparatus, an incident light processing portion that processes light incident through the opening portion, and a battery that supplies power to the incident light processing portion, in which in a view from a first direction that is a vertical direction intersecting with the bottom surface and an upper surface which is a surface on an opposite side from the bottom surface, the incident light processing portion and the battery have an overlapping part.

A color measurement apparatus includes an opening portion forming member that is a member in which an opening portion for causing light arriving from a measurement target to enter inside the apparatus is formed, and that is arranged on a bottom surface at a time of measurement performed by the apparatus, the opening portion for causing the light arriving from the measurement target to enter inside the apparatus, an incident light processing portion that processes light incident through the opening portion, and an operation portion that is positioned on an upper surface, and that receives various operations, in which in a view from a first direction that is a vertical direction intersecting with the bottom surface and the upper surface which is the surface on the opposite side from the bottom surface and includes a display portion, the opening portion and the operation portion have an overlapping part.