Abstract:
Un spectromètre (10) d'étalonnage automatique d'un scanner (30) d'image en couleur du type scanner linéaire ou scanner de zone, comprend un élément (20), doté d'une fente optique (18), mobile jusque dans une position située sur un axe optique (14) du scanner entre sa source (12) de lumière polychromatique et sa lentille à focalisation (16), dans un plan occupé par une image en couleur lorsque celle-ci est analysée. Un réseau de diffraction (24) est mobile de manière similaire jusque sur l'axe optique, à une distance donnée d'un détecteur d'image (22) du scanner. La source de lumière illumine la fente et le réseau de diffraction diffuse la lumière polychromatique transmise en fonction de sa longueur d'onde, formant des spectres de duplication décalés de l'axe sur des fractions respectives du détecteur d'image, les longueurs d'onde plus longues étant déviées selon des angles supérieurs respectivement.
Abstract:
In the spectroscopy module 1, a light absorbing layer 6 having a light-passing hole 6a through which light L1 advancing into a spectroscopic portion 3 passes and a light-passing hole 6b through which light L2 advancing into a light detecting portion 4a of a light detecting element 4 passes is integrally formed by patterning. Therefore, it is possible to prevent deviation of the relative positional relationship between the light-passing hole 6a and the light-passing hole 6b. Further, since the occurrence of stray light is suppressed by the light absorbing layer 6 and the stray light is absorbed, the light detecting portion 4a of the light detecting element 4 can be suppressed from being made incident. Therefore, according to the spectroscopy module 1, it is possible to improve the reliability.
Abstract:
An optical grain evaluation device is provided with: a light-projecting part 58 through which light from a light source is projected to grain; a light-receiving part 59 on which light transmitted through the grain is incident; a grain evaluation unit 60 configured to evaluate the grain based on information relating to the received light; and a shielding part SH that separates an area between the light source 50 and the light-projecting part 59 from an area between the light-receiving part 59 and the grain evaluation unit 60, and prevents light from the light-projecting part 58 from directly entering the light-receiving part 59. The area between the light source 50 and the light-projecting part 58, and the area between the light-receiving part 59 and the grain evaluation unit 60 are configured, over the entirety of the areas, as air transmission areas in which light is transmitted through air.
Abstract:
There is provided an illumination device from which an index can be obtained, the index appropriately reflecting intensity of a light beam guided to an object to be illuminated. A light source, a photodetector, and a support structure are provided in the illumination device. The light source emits light. The light source has light distribution in which a reference axis serves as an axis of symmetry or light distribution in which a plane including the reference axis serves as a plane of symmetry. A first light beam included in the light is guided to the object to be illuminated. A second light beam included in the light is guided to the photodetector. The photodetector detects intensity of the second light beam. The light source and the photodetector are supported by the support structure in positions and postures that allow the first light beam and the second light beam to be guided in an aforementioned manner. A traveling direction of the first light beam makes a first angle with the reference axis. A traveling direction of the second light beam makes a second angle with the reference axis. The second angle is the same as the first angle.
Abstract:
A spectrometer 1A comprises a package 2 having a stem 4 and a cap 5, an optical unit 10A arranged on the stem 4, and a lead pin 3 penetrating through the stem 4. The optical unit 10A has a dispersive part 21 for dispersing and reflecting light entering from a light entrance part 6 of the cap 5, a light detection element 30 for detecting the light dispersed and reflected by the dispersive part 21, a support 40 for supporting the light detection element 30 such as to form a space between the dispersive part 21 and the light detection element 30, a projection 11 projecting from the support 40, and a wiring electrically connected to the light detection element 30. The projection 11 is arranged at such a position as to be separated from the stem 4. The lead pin 3 is electrically connected to the second terminal part while being disposed to the projection 11.
Abstract:
A hyperspectral imaging system (100b) and a method are disclosed herein for providing a hyperspectral image of an area of a remote object (e.g., scene of interest 104). In one aspect, the hyperspectral imaging system includes at least one optic (106), a rotatable disk (302) which has multiple straight slits (304) formed therein, a spectrometer (110), a two-dimensional image sensor (112), and a controller (114). In another aspect, the hyperspectral imaging system includes at least one optic, a rotatable disk (which has at least one spiral slit formed therein), a spectrometer, a two-dimensional image sensor, and a controller. In yet another aspect, the hyperspectral imaging system includes at least one optic, a rotatable drum (which has a plurality of slits formed on the outer surface thereof and a fold mirror located therein), a spectrometer, a two-dimensional image sensor, and a controller.
Abstract:
A spectrometer 1A comprises a package 2 having a stem 4 and a cap 5, an optical unit 10A arranged on the stem 4, and a lead pin 3 penetrating through the stem 4. The optical unit 10A has a dispersive part 21 for dispersing and reflecting light entering from a light entrance part 6 of the cap 5, a light detection element 30 for detecting the light dispersed and reflected by the dispersive part 21, a support 40 for supporting the light detection element 30 such as to form a space between the dispersive part 21 and the light detection element 30, a projection 11 projecting from the support 40, and a wiring electrically connected to the light detection element 30. The projection 11 is arranged at such a position as to be separated from the stem 4. The lead pin 3 is electrically connected to the second terminal part while being disposed to the projection 11.