Abstract:
A spectroscopic measurement apparatus 1 includes a light source 10, an integrator 20, a first spectroscopic detector 41, a second spectroscopic detector 42, and an analysis unit 50. The integrator 20 includes an internal space 21 in which a measurement object is disposed, a light input portion 22 for inputting light to the internal space 21, a light output portion 23 for outputting light from the internal space 21, and a sample attachment portion 24 for attaching the measurement object. The first spectroscopic detector 41 receives the light output from the integrator 20, disperses the light of a first wavelength region in the received light, and acquires first spectrum data. The second spectroscopic detector 42 receives the light output from the integrator 20, disperses the light of a second wavelength region in the received light, and acquires second spectrum data. The first wavelength region and the second wavelength region include a wavelength region partially overlapping each other. Thus, the spectroscopic measurement apparatus and the spectroscopic measurement method that can perform spectroscopic measurement of the measurement target light with a wider wavelength region can be provided.
Abstract:
The invention features devices and methods for collecting and measuring light from external light sources. In general, the devices of the invention feature a light diffusing element, e.g., as a component of a light collector, connected by a light conducting conduit, e.g., a fiber optic cable, to a light measuring device, e.g., a spectrometer. This light diffusing element allows, e.g., for substantially uniform light diffusion across its surface and thus accurate measurements, while permitting the total footprint of the device to remain relatively small and portable. This light diffusing element also allows flexibility in scaling of the device to permit use in a wide range of applications.
Abstract:
A spectral measurement apparatus for irradiating a sample as a measurement object with excitation light and detecting light to be measured includes a light source generating the excitation light; an integrator having an input opening portion through which the excitation light is input, and an output opening portion from which the light to be measured is output; a housing portion arranged in the integrator and housing the sample; an incidence optical system making the excitation light incident to the sample; a photodetector detecting the light to be measured output from the output opening portion; and an analysis means calculating a quantum yield of the sample, based on a detection value detected by the photodetector, and the excitation light is applied to the sample so as to include the sample.
Abstract:
The invention relates to a measuring apparatus, which comprises a cavity (34) extending in a longitudinal direction (36), a first opening (35), which is to face a sample, a plurality of second openings (31) for detecting light coming from the sample, and at least one third opening (33) for coupling light into the cavity. Such a measuring apparatus is suitable in particular for spectroscopically examining planar samples.
Abstract:
A system (10) provides white light having a selectable spectral characteristic (e.g. a selectable color temperature) using an optical integrating cavity (11) to combine energy of different wavelengths from different sources with white light. The cavity has a diffusively reflective interior surface and an aperture (17) for allowing emission of combined light. Control of the intensity of emission of the sources sets the amount of primary color light of each wavelength added to the substantially white input light output and thus determines a spectral characteristic of the white light output through the aperture. A variety of different elements may optically process the combined light output, such a deflector, a variable iris, and a lens a variable focusing lenses system, a collimator, a holographic diffuser and combinations thereof.