Abstract:
The invention relates to a sensor for detecting and localising laser beam sources, comprising a beam-sensitive detector (30) which is arranged in the image field of an imaging optic (20), an electronic image treating device (40) which is connected to the detector (30), and an optical diffraction element (10) which is arranged in the beam path. According to the invention, the diffraction properties of the optical diffraction element (10) are such that incident laser light on different wave length strips produce diffraction patterns with different shapes, and the electronic signal evaluation device (40) is designed such that it can detect and evaluate the different forms of the diffraction pattern.
Abstract:
The apparatus for selectively transmitting the spectrum of electromagnetic radiation within a predefined wavelength range is provided with a carrier (115), a pinhole diaphragm which is arranged above the carrier (115) and is made of a material that is substantially impermeable to the radiation of interest, wherein the pinhole diaphragm has at least one radiation passage opening with a size for allowing through radiation at a wavelength which is less than or equal to a predefinable upper limit wavelength, and an electrically insulating and optically transparent dielectric layer (103) which is formed on the carrier (115) inside the radiation passage opening and extends, in a manner adjoining the radiation passage opening, between the carrier (115) and at least one section below the pinhole diaphragm. The dielectric layer (103) has a thickness which is less than or equal to half a predefinable lower limit wavelength which is less than the upper limit wavelength.
Abstract:
A subject image with little blur is provided even when the subject exists in a wide range of distance. An image capturing module includes: a plurality of image capturing systems, each including an optical system and capturing a an image of a subject by light in a wavelength region different from each other to generate a wavelength component signal representing an image of light in the corresponding wavelength region; and an image generating section that combines the wavelength component signals generated by the plurality of image capturing systems thereby generating an image signal representing an image of the subject, where an image capturing system, from among the plurality of image capturing systems, which generates a wavelength component signal having a greater contribution to brightness in the image of the subject includes an optical system having a deeper focal depth.
Abstract:
A dual-mode includes a light source configured to project a structured illumination from which visible light can be filtered. The dual-mode imager also includes a detector configured to capture both the structured illumination and visible light from the scene. A temporal or spatial filter is used to selectively block visible light from one or more portions of the detector while passing the structured illumination to the one or more portions of the detector.
Abstract:
An optical microscope capable of performing measurement with a high resolution and a spectrometry method are provided. A spectrometry device according to an aspect of the present invention includes a laser light source 10, an objective lens 21 that concentrates a light beam and applies the concentrated light beam onto a sample 22, a Y-scanning unit 13 that scans a spot position of the light beam on the sample 22, a beam splitter 17 that separates, among the light beam incident on the sample 22, outgoing light emitted from the sample 22 toward the objective lens 21 side from the light beam emitted from the light source 10 and incident on the sample, the outgoing light being emitted with a different wavelength, a spectroscope 31 that spatially disperses the outgoing light separated by the beam splitter 17 according to the wavelength, a detector 32 that detects the outgoing light dispersed by the spectroscope 31, and a pinhole array 30 disposed on an incoming side of the spectroscope 31, a plurality of pinholes 42 being arranged in the pinhole array, the plurality of pinholes 42 being adapted to allow outgoing light to pass therethrough to the spectroscope 31 side.
Abstract:
A multispectral staring array (10) comprises, amongst other things, at least two sensors (28, 30) where each sensor is adapted to detect an image in a different predetermined spectral sensitivity; a first lens (14) to focus capture spectral bands; a spectral filter (20, 22) between the lens (14) and the sensors (28, 30) to subdivide the incident spectral bands; and a second lens (24, 26) to direct and focus the subdivided incident spectral bands on each of the sensors (28, 30).
Abstract:
A hyperspectral camera includes light mixing chambers projected onto an imaging sensor. The projection of each chamber is slightly larger than a sensor pixel. The chambers are placed as a linear array in a slit plane or as a two dimensional matrix in front of the imaging sensor. The mixed light from each chamber is depicted by several sensor pixels. The sensor outputs information used to form an overdetermined equation set. The set is solved and optimized for the solution giving the lowest overall error or the best fit. The solution of the equation set combined with the optimization is the intensity values of the chambers constituting imaginary pixels being calculated. These imaginary pixels form the output of an improved hyperspectral camera system, which has significantly lower optical errors like keystone and point spread function variation for different wavelengths.
Abstract:
A spectrometer includes a light source to project a light beam to a target object, an optical element including a plurality of apertures through which the light beam reflected by the target object transmits, a diffraction element to form diffracted images from a plurality of light beams having transmitted through the optical element, and a light receiving element to receive the diffracted images formed by the diffraction element and including an optical shield to block a diffracted image other than a certain-order diffracted image.