A spectrometer comprises a package having a stem and a cap, an optical unit arranged on the stem, and a lead pin penetrating through the stem. The optical unit has a dispersive part for dispersing and reflecting light entering from a light entrance part of the cap, a light detection element for detecting the light dispersed and reflected by the dispersive part, a support for supporting the light detection element such as to form a space between the dispersive part and the light detection element, a projection projecting from the support, and a wiring electrically connected to the light detection element. The projection is arranged at such a position as to be separated from the stem. The lead pin is electrically connected to the second terminal part while being disposed to the projection.

A spectrometer comprises a package having a stem and a cap, an optical unit arranged on the stem, and a lead pin penetrating through the stem. The optical unit has a dispersive part for dispersing and reflecting light entering from a light entrance part of the cap, a light detection element for detecting the light dispersed and reflected by the dispersive part, a support for supporting the light detection element such as to form a space between the dispersive part and the light detection element, a projection projecting from the support, and a wiring electrically connected to the light detection element. The projection is arranged at such a position as to be separated from the stem. The lead pin is electrically connected to the second terminal part while being disposed to the projection.

Methods and system for chromatic confocal microscopy are described. One example chromatic confocal microscope system includes a hyperchromatic objective lens configured to focus the light of different wavelengths onto different corresponding focal planes that are separated from one another within a sample object, focusing optics positioned to receive multi-spectral light reflected from the sample object after passing through the hyperchromatic objective lens, a detection slit to receive light from the focusing optics and to block at least a portion of light that is incident thereon, and a grating positioned to receive light after passing through the detection slit and to produce spatially separated light of different wavelengths to enable the detection of spatially separated light by an imaging sensor. The described chromatic confocal microscopes may be used to develop low-cost chromatic confocal endoscopes for disease diagnosis of human internal organs in vivo.

Methods and system for chromatic confocal microscopy are described. One example chromatic confocal microscope system includes a hyperchromatic objective lens configured to focus the light of different wavelengths onto different corresponding focal planes that are separated from one another within a sample object, focusing optics positioned to receive multi-spectral light reflected from the sample object after passing through the hyperchromatic objective lens, a detection slit to receive light from the focusing optics and to block at least a portion of light that is incident thereon, and a grating positioned to receive light after passing through the detection slit and to produce spatially separated light of different wavelengths to enable the detection of spatially separated light by an imaging sensor. The described chromatic confocal microscopes may be used to develop low-cost chromatic confocal endoscopes for disease diagnosis of human internal organs in vivo.

To implement a configuration for enabling independent adjustment of a spatial resolution and a wavelength resolution of a spectroscopic measurement device. A spatial resolution adjustment unit configured to adjust a spatial resolution of the spectroscopic measurement device, and a wavelength resolution adjustment unit configured to adjust a wavelength resolution of the spectroscopic measurement device are included, and the spatial resolution adjustment unit maintains output light from a condensing unit to a spectroscopic imaging unit of the spectroscopic measurement device as parallel light, adjusts a parameter of a constituent element of the condensing unit, and changes the spatial resolution without changing the wavelength resolution of the spectroscopic measurement device. The wavelength resolution adjustment unit adjusts a parameter of a spectroscopic imaging unit of the spectroscopic measurement device and changes the wavelength resolution without changing the spatial resolution of the spectroscopic measurement device.

A spectrometer including at least one light-coupling element, a variable entrance slit, a dispersive element, a detector element and a control and evaluation unit. The object of providing a spectrometer having improved measuring characteristics is achieved in that the variable entrance slit is implemented by a first spatial modulation element including a plurality of pixels, wherein the individual pixels can be arranged independently of one another by the control and evaluation unit, wherein the individual pixels are arranged in order to implement the entrance slit during operation in such a manner that at least part of the light incident from the light-coupling element is passed on to the dispersive element.

A spectrometer including at least one light-coupling element, a variable entrance slit, a dispersive element, a detector element and a control and evaluation unit. The object of providing a spectrometer having improved measuring characteristics is achieved in that the variable entrance slit is implemented by a first spatial modulation element including a plurality of pixels, wherein the individual pixels can be arranged independently of one another by the control and evaluation unit, wherein the individual pixels are arranged in order to implement the entrance slit during operation in such a manner that at least part of the light incident from the light-coupling element is passed on to the dispersive element.

A variable focus imaging lens assembly has different, calibrated settings for each of multiple different wavelength ranges. Images are captured for each wavelength range using the different settings, corrected and stacked to form an image data cube. Using multiple wavelength ranges allows a scene or object to be imaged by multispectral imagers, hyperspectral imagers and imaging spectrometers using an overall wide wavelength range.

A variable focus imaging lens assembly has different, calibrated settings for each of multiple different wavelength ranges. Images are captured for each wavelength range using the different settings, corrected and stacked to form an image data cube. Using multiple wavelength ranges allows a scene or object to be imaged by multispectral imagers, hyperspectral imagers and imaging spectrometers using an overall wide wavelength range.

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.