Abstract: A method and a system for classifying at least one individual gas compound from a plurality of leaked gases in a specified field of view are provided herein. The method may include the following steps: generating, by a cryogenically cooled detector and using a first of at least n filters, multiple spectral band images of the specified view in spectral bands coinciding with said leaking gases spectral bands in which said leaking gases emit and absorb electromagnetic radiation; calculating from the images, the relative absorption response of said gases in each of said filters, respectively; calculating a set of predetermined coefficients; normalizing said relative absorption responses to the sum of relative responses of said filters; and calculating the weighted average molecular mass of said gas compound of said leaking gases.

Abstract: A method and a system for classifying at least one individual gas compound from a plurality of leaked gases in a specified field of view are provided herein. The method may include the following steps: generating, by a cryogenically cooled detector and using a first of at least n filters, multiple spectral band images of the specified view in spectral bands coinciding with said leaking gases spectral bands in which said leaking gases emit and absorb electromagnetic radiation; calculating from the images, the relative absorption response of said gases in each of said filters, respectively; calculating a set of predetermined coefficients; normalizing said relative absorption responses to the sum of relative responses of said filters; and calculating the weighted average molecular mass of said gas compound of said leaking gases.

Abstract: Gas leakage monitoring systems and methods are provided, which use infrared camera(s) configured to capture images and to detect gas leakage at specified detection locations (SDLs) captured thereby, sniffer(s) configured to quantify the gas leakage at specified measurement points, and processing unit(s) in communication with the sniffer(s) and the camera(s), which are configured to associate and display sniffer point measurements within captured image(s) or video of the corresponding SDLs. The systems and methods generate a documentation of gas leakage measurements in association with images of the sniffers' positions during the measurements, e.g., measurement data being displayed on the image(s) of the sniffer(s) and provide additional combined analysis of images and measurements.

Abstract: System and method of quantifying a gas leak in a specified field of view are disclosed. The system may comprise a cooled detector and two interchangeable band-pass non-cooled filters. A first non-cooled band-pass filter transmits electromagnetic radiation in a first spectral band that coincides with a non-transparent leaking gas spectral band. A second non-cooled band-pass filter transmits only electromagnetic radiation in a second spectral band which coincides with a transparent leaking gas spectral band. The system may comprise a quantification unit arranged to process the images generated by the cooled detector to thereby determine, based on the images thereof, a flowrate of the leaking gas in the specified field of view. The system may comprise a detection unit arranged to determine, based on alternately generated multiple first spectral band images and multiple second spectral band images, a gas leak in the specified field of view.

Abstract: System and method of quantifying a gas leak in a specified field of view are disclosed. The system may comprise a cooled detector and two interchangeable band-pass non-cooled filters. A first non-cooled band-pass filter transmits electromagnetic radiation in a first spectral band that coincides with a non-transparent leaking gas spectral band. A second non-cooled band-pass filter transmits only electromagnetic radiation in a second spectral band which coincides with a transparent leaking gas spectral band. The system may comprise a quantification unit arranged to process the images generated by the cooled detector to thereby determine, based on the images thereof, a flowrate of the leaking gas in the specified field of view. The system may comprise a detection unit arranged to determine, based on alternately generated multiple first spectral band images and multiple second spectral band images, a gas leak in the specified field of view.

Abstract: A method of optimizing detection of known light sources is provided herein. The method may include: positioning a plurality of cameras having different spectral bands to have at least partially identical fields of view in respect to a view that contains the light sources; capturing images of the light sources by the cameras at different spectral bands; estimating, for each pixel and all cameras, relative fraction values of collected sun light and of collected light sources; deriving, for each pixel, optimal fraction values of sun light and of the light sources, by minimizing, for each pixel, a mean square error estimation of an overall radiation with respect to the estimated relative fraction values.

Abstract: An infrared optical system having a spectral range for achieving a fog penetration distance of at least 2.75 Runway Visibility Range (RVR) is provided herein. The optical system may include a single set of optical elements designed to have a wavelength range extending beyond 1.2 ?m toward shorter wavelengths and comprising a short-wavelength infrared (SWIR) range and at least one of: a middle-wavelength infrared (MWIR) range and a long-wavelength infrared (LWIR) range, to enhance a detection range of the infrared optical system, wherein the single set of optical elements is laid such that the both the SWIR range and the at least one of the MWIR range and the LWIR range of infrared radiation pass through all of the optical elements.

Abstract: An optical arrangement of lenses configured for use with an ultra wide band optical sensor is provided herein. The optical arrangement is associated with a back focal plane and further includes a first, a second, a third, a fourth, a fifth, and a sixth lens ordered from first to sixth along a common optical axis such that the first lens is farthest from the back focal plane and the sixth lens is closest to the back focal plane, wherein the first and the second lenses are made of zinc sulfide, the third and the sixth lenses are made of barium fluoride, the fourth lens is made of magnesium oxide, and the fifth lens is made of calcium fluoride, and wherein the lenses are selected to transfer any light within a wavelength range that contains 0.42 ?m to 3.6 ?m.

Abstract: A system kit and a method for creating a thermal imaging camera by connecting an infrared radiation capturing device to an external platform are provided herein. The kit may include a front end module which may include an image capturing device comprising a micro bolometer detector; and a universal serial bus (USB) interface connected to the image capturing device. The kit may further include a backend module, comprising data sets which are specific to said micro bolometer detector and computer readable code which is executable by a computer processor located at a physical location other than the front end module, wherein said front end module is configured to obtain raw data from the micro bolometer detector and deliver it over the USB interface to said backend module, wherein said backend module code turns the raw data into thermal imagery and temperature readings.

Abstract: A method of optimizing detection of known light sources is provided herein. The method may include: positioning a plurality of cameras having different spectral bands to have at least partially identical fields of view in respect to a view that contains the light sources; capturing images of the light sources by the cameras at different spectral bands; estimating, for each pixel and all cameras, relative fraction values of collected sun light and of collected light sources; deriving, for each pixel, optimal fraction values of sun light and of the light sources, by minimizing, for each pixel, a mean square error estimation of an overall radiation with respect to the estimated relative fraction values.

Abstract: An optical instrument that includes: an objective lens having an outer convex surface, an inner concave surface, a center, a first optical axis, and a bore cut substantially though the center; a set of objective lenses positioned within the bore and along the first optical axis; a first reflective element disposed along the first optical axis, within a first distance from the convex surface and tilted at a first tilt angle, the first reflective element configured to reflect rays incident along the first optical axis onto a second optical axis; and a second reflective element disposed along the second optical axis and within a second distance from the concave surface, wherein the first tilt angle is selected such that the first and the second distances are minimized.

Abstract: An optical instrument with temperature-related focal length variations compensation mechanism is provided herein. The optical instrument includes: a housing within a bore of the optical instrument, wherein the bore and the housing have each a distal end and a proximal end; a set of lenses located on a common optical axis and affixed within the housing, wherein the set of lenses is associated with a specified focal length for each specified temperature; and a temperature compensation member connecting the distal end of the housing to the distal end of the bore of the optical instrument, wherein the temperature compensation member comprises one or more sections whose thermal expansion coefficient and length along the optical axis are selected such that for a specified range of temperatures, the expansion of the temperature compensation member along the optical axis compensates for a change of the focal length of the lenses.

Abstract: An optical arrangement of lenses configured for use with an ultra wide band optical sensor is provided herein. The optical arrangement is associated with a back focal plane and further includes a first, a second, a third, a fourth, a fifth, and a sixth lens ordered from first to sixth along a common optical axis such that the first lens is farthest from the back focal plane and the sixth lens is closest to the back focal plane, wherein the first and the second lenses are made of zinc sulfide, the third and the sixth lenses are made of barium fluoride, the fourth lens is made of magnesium oxide, and the fifth lens is made of calcium fluoride, and wherein the lenses are selected to transfer any light within a wavelength range that contains 0.42 ?m to 3.6 ?m.

Abstract: Imaging system and method for detecting the presence of a substance that has a detectable signature in a known spectral band. The system comprises a thermal imaging sensor and optics, and two interchangeable band-pass uncooled filters located between the optics and the detector. A first filter transmits electromagnetic radiation in a first spectral band that includes the known spectral band and blocks electromagnetic radiation for other spectral bands. A second filter transmits only electromagnetic radiation in a second spectral band in which the substance has no detectable signature. The system also includes a processor for processing the images to obtain a reconstructed fused image involving using one or more transforms aimed at obtaining similarity between one or more images acquired with the first filter and one or more images acquired with the second filter before reconstructing the fused image.

Abstract: An optical instrument with temperature-related focal length variations compensation mechanism is provided herein. The optical instrument includes: a housing within a bore of the optical instrument, wherein the bore and the housing have each a distal end and a proximal end; a set of lenses located on a common optical axis and affixed within the housing, wherein the set of lenses is associated with a specified focal length for each specified temperature; and a temperature compensation member connecting the distal end of the housing to the distal end of the bore of the optical instrument, wherein the temperature compensation member comprises one or more sections whose thermal expansion coefficient and length along the optical axis are selected such that for a specified range of temperatures, the expansion of the temperature compensation member along the optical axis compensates for a change of the focal length of the lenses.

Abstract: An optical instrument that includes: an objective lens having an outer convex surface, an inner concave surface, a center, a first optical axis, and a bore cut substantially though the center; a set of objective lenses positioned within the bore and along the first optical axis; a first reflective element disposed along the first optical axis, within a first distance from the convex surface and tilted at a first tilt angle, the first reflective element configured to reflect rays incident along the first optical axis onto a second optical axis; and a second reflective element disposed along the second optical axis and within a second distance from the concave surface, wherein the first tilt angle is selected such that the first and the second distances are minimized.

Abstract: A shutter mechanism for an optical system includes a linear track having a first end and a second end, a first magnetic assembly located adjacent the first end of the track and a second magnetic assembly located adjacent the second end of the track, the two magnetic assemblies arranged in opposite polarities. A shutter plate is provided coupled to a coil mounted on and movable across the track. When a direct electric current is passed through the coil in one direction the shutter is forced to move to the first end of the track, whereas when a direct electric current is passed through the coil in an opposite direction the shutter is forced to move to the second end of the track.

Abstract: Device for retrieving electrical charge, resulting from electromagnetic radiation energy incident on a temperature sensor array, the temperature sensor array including a plurality of temperature sensor rows, each temperature sensor row including a plurality of temperature sensors, the device including a retrieval module array and a row select circuit, the retrieval module array including a plurality of retrieval module rows, each retrieval module row including a plurality of retrieval modules, each of the retrieval modules being operative to accumulate the electrical charge from a single temperature sensor, the row select circuit being coupled with the temperature sensor array, and with the retrieval module array, the row select circuit being operative for coupling the retrieval modules of each of the retrieval module row of the retrieval module array with a respective temperature sensor of a temperature sensor row of the temperature sensor array, for a time period which is greater than the frame acquisition

Abstract: Device for retrieving electrical charge, resulting from electromagnetic radiation energy incident on a temperature sensor array, the temperature sensor array including a plurality of temperature sensor rows, each temperature sensor row including a plurality of temperature sensors, the device including a retrieval module array and a row select circuit, the retrieval module array including a plurality of retrieval module rows, each retrieval module row including a plurality of retrieval modules, each of the retrieval modules being operative to accumulate the electrical charge from a single temperature sensor, the row select circuit being coupled with the temperature sensor array, and with the retrieval module array, the row select circuit being operative for coupling the retrieval modules of each of the retrieval module row of the retrieval module array with a respective temperature sensor of a temperature sensor row of the temperature sensor array, for a time period which is greater than the frame acquisition

Abstract: A brake monitoring system (10) having at least one brake temperature detection unit (10) externally attached to one of the brake assemblies (12) of a vehicle is provided. The brake temperature detection unit (10) includes at least one sensor (30) for detection radiation from the corresponding brake assembly (12) and a processing unit (32) coupled to the sensor (30) for determining the temperature of the corresponding brake assembly (12) from the detected radiation.