Provided is a hyperspectral imaging (HSI) apparatus. The HSI apparatus includes: a first slit plate configured to introduce an output beam; a first aspherical mirror configured to reflect the introduced output beam; a first grating having a planar reflective surface, the first grating configured to generate a plurality of first split beams by splitting the output beam after being reflected by the first aspherical mirror; and a first camera configured to detect the plurality of first split beams.

The present invention relates to a spectrometer for spectral analysis of electromagnetic radiation. The spectrometer comprises an entry slit for entry of the electromagnetic radiation to be analysed and an imaging grating for diffraction of the electromagnetic radiation which has entered. The spectrometer additionally comprises a detector extending at least in one direction to detect the diffracted electromagnetic radiation, and also a support plate in which the entry slit is located. The spectrometer further comprises a housing which is mounted on the support plate, covers the detector and the entry slit and supports the imaging grating. According to the invention the spectrometer further comprises at least three floating bearings for floating mounting of the housing on the support plate, the floating bearings each enabling a displacement between the housing and the support plate on a directional axis and being distributed about a central axis of the housing.

The present invention relates to a spectrometer for spectral analysis of electromagnetic radiation. The spectrometer comprises an entry slit for entry of the electromagnetic radiation to be analysed and an imaging grating for diffraction of the electromagnetic radiation which has entered. The spectrometer additionally comprises a detector extending at least in one direction to detect the diffracted electromagnetic radiation, and also a support plate in which the entry slit is located. The spectrometer further comprises a housing which is mounted on the support plate, covers the detector and the entry slit and supports the imaging grating. According to the invention the spectrometer further comprises at least three floating bearings for floating mounting of the housing on the support plate, the floating bearings each enabling a displacement between the housing and the support plate on a directional axis and being distributed about a central axis of the housing.

A freeform concave grating imaging spectrometer includes a slit, a freeform concave grating, and an image surface. The lights incident from the slit is irradiated on the freeform concave grating to be dispersed and reflected, to form a reflected light beam. The reflected light beam is irradiated on the image surface, so that the lights of different wavelengths incident from the slit are separated and imaged on the image surface.

A freeform concave grating imaging spectrometer includes a slit, a freeform concave grating, and an image surface. The lights incident from the slit is irradiated on the freeform concave grating to be dispersed and reflected, to form a reflected light beam. The reflected light beam is irradiated on the image surface, so that the lights of different wavelengths incident from the slit are separated and imaged on the image surface.

A spectrometer includes a base, a light input element, a light splitting element, an image sensor and a shading element. The light input element is disposed on the base for receiving an optical signal. The light splitting element is disposed on the base to split the received optical signal into a plurality of spectral components. The image sensor is disposed on the base, and has a sensing surface for receiving the plurality of spectral components. The sensing surface has a virtual central line extending along an arrangement direction of the plurality of spectral components. The shading element is disposed between the light splitting element and the image sensor according to an optical influence factor, and is located on a projection path of a portion of the plurality of spectral components. A shadow generated by the shading element on the sensing surface does not fall on the virtual central line.

A hyperspectral sensing device may include an optical collector configured to collect light and to transfer the collected light to a sensor having spectral resolution sufficient for sensing hyperspectral data. In some examples, the sensor comprises a compact spectrometer. The device further comprises a power supply, an electronics module, and an input/output hub enabling the device to transmit acquired data (e.g., to a remote server). In some examples, a plurality of hyperspectral sensing devices are deployed as a network to acquire data over a relatively large area.

A hyperspectral sensing device may include an optical collector configured to collect light and to transfer the collected light to a sensor having spectral resolution sufficient for sensing hyperspectral data. In some examples, the sensor comprises a compact spectrometer. The device further comprises a power supply, an electronics module, and an input/output hub enabling the device to transmit acquired data (e.g., to a remote server). In some examples, a plurality of hyperspectral sensing devices are deployed as a network to acquire data over a relatively large area.

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 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.