Abstract: The description relates to a standard for wavelength and intensity for spectrometers, particularly for calibrating and testing measurement heads in spectrometers which are usable primarily in the near infrared region (NIR) of the spectrum. The standard comprises a holder and a plate body arranged in the holder. The plate body is made of transparent plastic with high strength and dimensional stability over a large temperature range. The plastic has distinct absorption bands throughout the entire NIR range and has a chemical structure and composition ensuring an extensive moisture barrier against water absorption and water release in a reliable and stable manner over time. The plate body advantageously comprises an amorphous, transparent copolymer based on cyclic and/or linear olefins.

Abstract: A spectrometer including an entrance slit and the production of the entrance slit. The spectrometer includes a housing, an entrance slit, and an imaging diffraction grating inside the housing for splitting and imaging the light onto an optoelectric detector. The detector is arranged inside the housing. The housing and the base plate are connected to each other by mutually cooperating positioning members. The entrance slit, the positioning members of the base plate and the holding members for receiving and mounting the detecting device are integral parts of the base plate and are produced from the base plate in a precise manner, in a suitable form and in defined mutual positions by, for example, laser cutting or liquid jet cutting. The positioning members of the base plate and/or the holding members for the detecting device can be provided as resilient elements.

Abstract: The disclosure provides a device for optical spectrometry, wherein the reference beam and the measuring beam between the deflector and the detector input, in particular between the deflector output and the detector or between a device connecting the optical paths and the detector exhibit the same (the identical) etendue and the same (the identical) optical axis.

Abstract: A spectrometer including an entrance slit and the production of the entrance slit. The spectrometer includes a housing, an entrance slit, and an imaging diffraction grating inside the housing for splitting and imaging the light onto an optoelectric detector. The detector is arranged inside the housing. The housing and the base plate are connected to each other by mutually cooperating positioning members. The entrance slit, the positioning members of the base plate and the holding members for receiving and mounting the detecting device are integral parts of the base plate and are produced from the base plate in a precise manner, in a suitable form and in defined mutual positions by, for example, laser cutting or liquid jet cutting. The positioning members of the base plate and/or the holding members for the detecting device can be provided as resilient elements.

Abstract: The description relates to a standard for wavelength and intensity for spectrometers, particularly for calibrating and testing measurement heads in spectrometers which are usable primarily in the near infrared region (NIR) of the spectrum. The standard comprises a holder and a plate body arranged in the holder. The plate body is made of transparent plastic with high strength and dimensional stability over a large temperature range. The plastic has distinct absorption bands throughout the entire NIR range and has a chemical structure and composition ensuring an extensive moisture barrier against water absorption and water release in a reliable and stable manner over time. The plate body advantageously comprises an amorphous, transparent copolymer based on cyclic and/or linear olefins.