Systems and methods for hyperspectral and multispectral imaging are disclosed. A system includes a lens and an imaging device having a plurality of pixel sensors. A focus corrector is located within the optical path to refract at least a portion of the incoming light and change the focusing distance of specific wavelengths of light to converge at a focal plane. The focal corrector is selected based upon the imaging system to reduce an overall measure of deviation between a focal length curve for the lens and a focus position curve for pixel sensors to produce focused imaging data for a broad spectrum of light, including beyond the visible range.

Aspects of embodiments pertain to a sensing systems configured to receive scene electromagnetic (EM) radiation comprising a first wavelength (WL1) range and a second wavelength (WL2) range. The sensing system comprises at least one spectral filter configured to filter the received scene EM radiation to obtain EM radiation in the WL1 range and the WL2 ranges; and a self-adaptive electromagnetic (EM) energy attenuating structure. The self-adaptive EM energy attenuating structure may comprise material that includes nanosized particles which are configured such that high intensity EM radiation at the WL1 range incident onto a portion of the self-adaptive EM energy attenuating structure causes interband excitation of one or more electron-hole pairs, thereby enabling intraband transition in the portion of the self-adaptive EM energy attenuating structure by EM radiation in the WL2 range.

A line scan imaging system scans a targeted inspection area and gathers reflectance and fluorescence data. The inspection system comprises at least a rotatable/pivotable mirror-faced triangular prism, a line illumination source, and a line scan hyperspectral camera. The prism has a mirrored camera face and a mirrored illumination face. In operation, as the prism rotates, the camera instantaneous field of view (IFOV) and the projected illumination line converge at a nadir convergence scan line so that the hyperspectral camera receives line scan data from the nadir convergence scan line as the nadir convergence scan line traverses an inspection area.

An embodiment of a support structure for adjusting the position of a plurality of optical elements is described that comprises a base plate comprising a centering pin, a first translation slot, and a second translation slot; and a translatable plate configured to operatively couple with a plurality of the optical elements and move relative to the base plate, wherein the translatable plate comprises a centering slot configured to engage with the centering pin, a first cam configured to engage with the first translation slot and control movement of the translatable plate along a first axis, and a second cam configured to engage with the second translation slot and control movement of the translatable plate along a second axis.

Disclosed are a scanner system and a method for recording surface geometry and surface color of an object where both surface geometry information and surface color information for a block of the image sensor pixels at least partly from one 2D image recorded by the color image sensor. A particular application is within dentistry, particularly for intraoral scanning.

Microscopic Raman spectroscopy device that detects and analyzes Raman scattering light emitted from sample irradiated with excitation light includes: laser light source that emits excitation light; spectrometer for measuring spectrum of the Raman scattering light; wavelength discriminator such as a dichroic filter that reflects the excitation light emitted from the laser light source toward the sample and transmits Raman scattering light emitted from the sample toward the spectrometer; condenser lens arranged between wavelength discriminator and the spectrometer for condensing the Raman scattering light passing through the wavelength discriminator; aperture arranged between the condenser lens and the spectrometer for limiting Raman scattering light incident on the spectrometer; adjusting means for adjusting to match a position of spot image of Raman scattering light condensed by condensing lens with a position of the aperture so that light amount of Raman scattering light passing through the aperture is maximized.

A high-resolution optical spectrometer with multiple diffractive optical elements operates under broadband light and enables spectral splitting with 3D diffractive optical elements. Diffractive optical elements are used to provide concentration of light as well as spectral splitting. Depending on the application, the high-resolution optical spectrometer operates with a reflection or transmission diffractive optical element. The number of operating wavelengths, spectral resolution, and operating bandwidth of diffractive optical elements are flexible depending on application.

An apparatus for providing temperature-dependent movement of an optical element, the apparatus comprising: a moveable mount for the optical element; a mount moving component attached to the moveable mount; and a guide attached to the mount moving component and configured to guide a movement of the moveable mount. The apparatus is configured such that a difference in thermal contraction or thermal expansion between the mount moving component and the guide in response to a change in temperature of the apparatus causes the mount moving component to move the moveable mount relative to the guide.

In an optical device, a base and a movable unit are constituted by a semiconductor substrate including a first semiconductor layer, an insulating layer, and a second semiconductor layer in this order from one side in a predetermined direction. The base is constituted by the first semiconductor layer, the insulating layer, and the second semiconductor layer. The movable unit includes an arrangement portion that is constituted by the second semiconductor layer. The optical function unit is disposed on a surface of the arrangement portion on the one side. The first semiconductor layer that constitutes the base is thicker than the second semiconductor layer that constitutes the base. A surface of the base on the one side is located more to the one side than the optical function unit.

An optical module includes a mirror unit and a beam splitter unit. The mirror unit includes a base with a main surface, a movable mirror, a first fixed mirror, and a drive unit. The beam splitter unit constitutes a first interference optical system for measurement light along with the movable mirror and the first fixed mirror. A mirror surface of the movable mirror and a mirror surface of the first fixed mirror follow a plane parallel to the main surface and face one side in a first direction perpendicular to the main surface. The movable mirror, the drive unit, and at least a part of an optical path between the beam splitter unit and the first fixed mirror are disposed in an airtight space.