Abstract:
There is described an optical radiation sensor device for detecting radiation in a radiation field. The device comprises a sensor element capable of detecting and responding to incident radiation from the radiation field and a radiation window interposed between the sensor element and the radiation field. The radiation window comprises a non-circular (preferably square) shaped radiation transparent opening. The optical radiation sensor device can be used in a so-called dynamic manner while mitigating or obviating the detection errors resulting from the use of a circular-shaped attenuating aperture and/or angular (even minor) misalignment of the sensor device with respect to the array of radiation sources when multiple such circular-shaped attenuating apertures are used.
Abstract:
The invention relates to a selective detector arrangement for the detecting of approximately point-like collected light in a predetermined wavelength region and angle of the field of vision, with an optical collector system which is made from a material passing the light at a predetermined wavelength range and with a light sensitive sensor element. The essence of the invention resides in that within a predetermined wavelength range for the optical collector system there is a characteristic focal point surface, which is spaced from the focal point surfaces characteristic of wavelengths lying outside of such range and that the sensor element is coupled with the optical collector system in optical fashion over an aperture which is formed in the focal point surface associated with the predetermined wavelength range, and wherein the size of the aperture substantially corresponds in size to the size of the focal point surface of the light falling at the predetermined angle of the field of vision and in the predetermined wavelength range.
Abstract:
A light sensor includes a primary lens, and a light device spaced from the primary lens. A control structure is disposed between the primary lens and the light device. An actuator is coupled to the control device to move the control device relative to the primary lens and the light device to control the passage of light between the primary lens and the light device. The light sensor may include a light emitting sensor having an array of individual light emitters, or a light detecting sensor having a light detector. The control structure may include an array of secondary bi-telecentric lenses for use with the light emitting sensor, or a plate having an aperture extending therethrough for use with the light detecting sensor.
Abstract:
There is described an optical radiation sensor device for detecting radiation in a radiation field. The device comprises a sensor element capable of detecting and responding to incident radiation from the radiation field and a radiation window interposed between the sensor element and the radiation field. The radiation window comprises a non-circular (preferably square) shaped radiation transparent opening. The optical radiation sensor device can be used in a so-called dynamic manner while mitigating or obviating the detection errors resulting from the use of a circular-shaped attenuating aperture and/or angular (even minor) misalignment of the sensor device with respect to the array of radiation sources when multiple such circular-shaped attenuating apertures are used.
Abstract:
There is described an optical radiation sensor device for detecting radiation in a radiation field. The device comprises a sensor element capable of detecting and responding to incident radiation from the radiation field and a radiation window interposed between the sensor element and the radiation field. The radiation window comprises a non-circular (preferably square) shaped radiation transparent opening. The optical radiation sensor device can be used in a so-called dynamic manner while mitigating or obviating the detection errors resulting from the use of a circular-shaped attenuating aperture and/or angular (even minor) misalignment of the sensor device with respect to the array of radiation sources when multiple such circular-shaped attenuating apertures are used.
Abstract:
Un détecteur optique sélectif pour détecter une lumière approximativement ponctuelle susceptible d'être collectée dans une plage de longueurs d'ondes et angle visuel prédéterminés est pourvu d'un élément collecteur optique fait en un matériau transparent à la lumière ayant des longueurs d'ondes dans une plage prédéterminée et d'un élément détecteur sensible à la lumière. L'invention se caractérise par le fait que le système collecteur optique possède une surface de point focal caractéristique de la plage prédéterminée de longueurs d'ondes et qui se situe à une certaine distance des surfaces de point focal caractéristiques des longueurs d'ondes en dehors de cette plage. L'élément détecteur est optiquement connecté au système collecteur optique par une ouverture formée dans la surface de point focal appartenant à la plage prédéterminée de longueurs d'ondes. La grandeur de l'ouverture correspond essentiellement à la grandeur de la surface du point focal de la lumière venant de l'angle visuel prédéterminé et appartenant à la plage prédéterminée de longueurs d'ondes.
Abstract:
A selective optical detector for detecting a substantially punctual light susceptible of being collected in a predetermined wavelength range and visual angle is provided with an optical collector element made of a light-transparent material having wavelengths comprised within a predetermined range and a light-sensitive detector element. The invention is characterized in that the optical collector system has a focus surface characteristic of the predetermined wavelength range and which is located at a certain distance from the focus surfaces which are characteristic of the wavelengths outside of said range. The detector element is optically connected to the optical collector system by an opening provided in the focus surface pertaining to the predetermined wavelength range. The size of the opening substantially corresponds to the size of the surface of the focus of the light coming from the predetermined visual angle and pertaining to the predetermined wavelength range.
Abstract:
There is described an optical radiation sensor device for detecting radiation in a radiation field. The device comprises a sensor element capable of detecting and responding to incident radiation from the radiation field and a radiation window interposed between the sensor element and the radiation field. The radiation window comprises a non-circular (preferably square) shaped radiation transparent opening. The optical radiation sensor device can be used in a so-called dynamic manner while mitigating or obviating the detection errors resulting from the use of a circular-shaped attenuating aperture and/or angular (even minor) misalignment of the sensor device with respect to the array of radiation sources when multiple such circular-shaped attenuating apertures are used.