42 results about "X-ray image intensifier" patented technology

An infrared imaging device combines two sensors, each sensor sensitive to a different spectral range of infrared radiation. Both sensors are combined in a single camera sharing one of three common optical apertures, thus parallax is eliminated between the sensors. Further, a display device is aligned along an optical axis in common with the camera eliminating parallax between the display and camera. Images from the first sensor, the second sensor, or both sensors may be viewed optically and/or electronically. The device is handheld, or mountable on a headgear such as a helmet. When mounted on headgear, the display is viewable by directing the operator's gaze upward, thus the display does not interfere with an operator's straight and downward sight. The image can be sent to a remote display by a wireless transceiver, and waterproof, fireproof, vibration/impact resistance, and hot/cold weather resistance are achieved using a high strength plastic enclosure with foam insert.

A gamma-ray or X-ray detection device including a scintillator configured to convert gamma rays or X-rays into optical radiation, an optical image intensifier configured to intensify the optical radiation to generate intensified optical radiation, an optical coupling system configured to guide the intensified optical radiation, and a solid state detector configured to detect the intensified optical radiation to generate an interaction image representing a gamma-ray or X-ray energy emission.

An X-ray radioscopic photographing apparatus comprises a top-board support frame for supporting a top board in the body axis direction of an examinee, a stand for supporting the top-board support frame so as to be rotatable about the body axis, a support for holding an X-ray tube unit and an X-ray image intensifier so as to be faced each other, a support member for holding the stand and supporting the support so as to be movable in the body axis direction, and a base portion for supporting the support member tiltably.

Using CCD camera, image intensifier, reflecting mirror with large caliber and laser projector, Remote all-weather automatic intelligent monitoring instrument is applicable to environment under normal illumination, low illumination even 0 LUX illumination. The instrument is composed of hardware system and software system. The hardware includes reflector, day and night switching system, daylight image system, night image system and laser illumination system. The software includes control module, image process module, correction module for atmospheric disturbance, and module for correcting and capturing images. The invention is capable of recognizing persons at 10 km under normal illumination, or at 1-4 km under 0 LUX, or at 6 km under 0.00 LUX. The instrument possesses functions of zooming target, automatic switching day and night, image capture and recording. The invention is applicable to frontier defense, public security for monitoring important area and searching object etc.

The invention discloses a low light level detector which is based on a second generation inverting image intensifier and performs local gating at normal temperature. The low light level detector comprises a detector shell, wherein the detector shell is divided into an upper cavity body and a lower cavity body; a light measurement CCD, a video acquisition module, a field programmable gate array, a liquid crystal driving module, a power supply and a display screen are sequentially arranged in the upper cavity body; one end, which is connected with the light measurement CCD, outside the upper cavity is provided with a lens A; the other end of the upper cavity is provided with a pushbutton; a liquid crystal board, a magnetic mirror array image intensifier, an optical fiber taper and an imaging CCD are sequentially arranged in the lower cavity; one end, which is connected with the liquid crystal board, outside the lower cavity is provided with a lens B; and the lens A and the lens B are parallelly arranged. The detector changes the mode of the prior CCD to the integration of optical signals, adopts the HTPS liquid crystal board simultaneously, automatically performs local gate control on light intensity, has wider dynamic application range, and can normally work and clearly image within the light intensity range of between 10<-8> and 10<5>lx.

An image intensifier tube includes a collimator having multiple channels for receiving electrons from a photocathode layer, and a microchannel plate (MCP) having multiple channels for receiving electrons from the collimator. An ion barrier film (IBF) is disposed on top of an input side of the MCP, in which the IBF includes a small amount of conductive material. The IBF may include alumina doped with chromium oxide, or manganese oxide, or any other conductive material. The small amount of conductive material includes 1% to 5% of conductive material in a layer of non-conductive material.

The invention relates to an X-ray image intensifier dental machine panorama generation method and belongs to the medical apparatus technology field. The method is characterized by comprising four steps that: step 1, three-dimensional data is generated by images acquired by an X-ray image intensifier; step 2, multiple frames of curved surface images are extracted in the three-dimensional data by utilizing a dental model framework; step 3, fusion of multi-frame images is carried out by utilizing a fusion method; step 4, the images after fusion are intensified by utilizing an intensifying method. The method is advantaged in that: the tooth curved surface tomography images can be extracted by utilizing the three-dimensional CT data, problems of deformation of the perspective images and overlapping are solved, and diagnosis precision is further improved.

The invention discloses a low light level detector which is based on a third generation proximity image intensifier and performs local gating at normal temperature. The low light level detector comprises a detector shell, wherein the detector shell is divided into an upper cavity and a lower cavity; a light measurement CCD, a video acquisition module, a field programmable gate array, a liquid crystal driving module, a power supply and a display screen are sequentially arranged in the upper cavity; one end, which is connected with the light measurement CCD, outside the upper cavity is provided with a lens A; a pushbutton is arranged outside the other end of the upper cavity; a liquid crystal board, a third generation proximity type magnetic mirror array image intensifier, an optical fiber taper and an imaging CCD are sequentially arranged in the lower cavity; one end, which is connected with the liquid crystal board, outside the lower cavity is provided with a lens B; and the lens A and the lens B are parallelly arranged. The detector automatically performs local gate control on light intensity, has wider dynamic application range, and can normally work and clearly image within the light intensity range of between 10<-8> and 10<5>lx.

The invention discloses an X-ray detector comprising a base in which a control host is arranged. The inner bottom surface of the base is provided with an X-ray image enhancer, and an object carrying plate for placing an object to be detected is arranged on the upper end surface of the base; a workbench having a gap with the object carrying plate is arranged on the base, and an X-ray tube transmitting X ray is arranged in the workbench; a displaying component is put on the workbench; the X-ray image enhancer is connected with the displaying component by a data control circuit and the control host. The upper end of the image enhancer is connected with an X-ray protection device which prevents X ray from harming environment, the X-ray protection device is an inverse convex lead box, and the upper end surface of the lead box is provided with a gland which is provided with an X-ray inlet; two sides of the X-ray tube are provided with a fan for air inlet and outlet, and the X-ray tube is also provided with a temperature sensor control head used for sensing the surface temperature of the X-ray tube in real time. The invention has strong radiation protection ability, safe use, convenient operation, long service life of the X-ray tube and high detection precision and greatly lowers production cost.

The invention discloses a night vision true color image acquisition method based on filtering of an image intensifier, which is mainly applied to a low-light level night vision device made by an image intensifier. A technical means of coating a layer of color filtering thin film on a photon plane of a photoelectric cathode of the image intensifier is adopted, a certain interpolation algorithm is combined, and color image acquisition in a night vision condition can be realized. compared with the prior art, the method of the invention can acquire a color image with higher resolution and better image quality in the night vision condition.

The invention provides an astronomical image noise removal method. The astronomical image noise removal method can be used in the aspect of important photon data processing of quasi-maximum values. According to the method, images containing acquired star fields are segmented by plane fields so as to amend the response from a CCD camera to incident light; after correspondingly removing dark domain transformation, wavelet curve coefficient thresholding is applied on the processed images; if a certain coefficient is greater than a threshold value, the coefficient is important, or else, the coefficient is not important. According to the scheme, the optical abnormity and non-consistent noise in the astronomical images, especially the noise caused by the non-consistent sensitivity of an image intensifier, can be effectively eliminated, so that the aim of improving the working efficiency is achieved.

The invention relates to the technical field of optoelectronic equipment and discloses night vision equipment and shooting equipment. The night vision equipment comprises an objective lens, an eye lens, an image intensifier, a lens tube, a light intensity induction module and a control module; the light intensity induction module and the control module are arranged on one side of the objective lens in the lens tube; the light intensity induction module is used for detecting the intensity of light penetrating through the objective lens; and the control module is used for controlling to close the image intensifier when the light intensity induction module detects that the intensity of light penetrating through the objective lens exceeds the preset light intensity and controlling to start the image intensifier when the light intensity induction module detects that the intensity of light penetrating through the objective lens is lower than the preset light intensity. According to the technical scheme of the invention, highlight protection is automatically and intelligently carried out on the image intensifier, and the image intensifier is prevented from being damaged by highlight, so that the safety of the night vision equipment is improved, and the service life is prolonged.

An image intensifier is provided in which a thin film (090) is arranged between an output surface of the electron multiplier (040) and the phosphorous screen. The thin film is a semi-conductor or insulator with a crystalline structure comprising a band gap equal or larger than 1 eV, wherein the crystalline structure has a carrier diffusion length equal or larger than 50% of the thickness of the thin film. In addition, the thin film has an anode directed surface which has a negative electron affinity. By way of provisioning a thin film of the above type in the image intensifier, an improvement in mean transfer function of the overall image intensifier is obtained.

A gas electron multiplier comprises a read-out positive anode plate (1) and a micro grid electrode structure (2), the micro grid electrode structure (2) is formed by cascading of n layers of micro grid electrodes (21) through a support structure (3), and the support structure (3) is fixed on the read-out positive anode plate (1), wherein micropores of the micro grid electrode (21) of an upper layer are staggered with the micropores of the micro grid electrode (21) of a lower layer, a gas avalanche amplification region is formed among the micro grid electrodes (21), and n is an integer greaterthan 3. The gas electron multiplier can improve total gain of the of electron multiplication and simultaneously reduce ion feedback rate. A photoelectric detector can be manufactured based on the gaselectron multiplier, and thus, problems, such as increase of cost and decline of counting rate, caused by resistive electrodes are avoided, gain stability is improved, moreover, a problem that a photocathode material sensitive to visible light is liable to be damaged by ion feedback is solved.

A system is provided for the detection of contaminant particulates in closed containers, that system having a plurality of system components susceptible to degredation during the manufacture of container contents and filling of the closed containers, the system components susceptible to degradation comprising a radio opaque composition of matter; an x-ray source disposed proximate to a path of the closed container in a production line; an x-ray image intensifier whereby x-rays from the x-ray source are collected and an image is generated; a ccd camera whereby the x-ray image is digitized; a contaminated container rejection mechanism whereby closed containers having x-ray images with radio opaque portions are rejected as contaminated and removed from the production line.

An image intensifier system has an image converter tube to convert incident x-ray radiation into visible light and a digital camera system optically downstream of the image converter tube. The camera system has an image sensor to convert the incident, visible light into digital images, and an electronic image processing unit is provided for post-processing of the digital images. In such a system and a method for correcting image distortion errors that occur therein, characteristic data of a magnetic field present in the image converter tube are determined with the aid of a magnetic field probe arranged within the image converter tube or in its environment, an imaging error resulting from the presence of the magnetic field is quantitatively defined using the determined characteristic data, one or more parameters of a correction map leading to the correction of the imaging error are determined based on this, and the correction map that is established in this way is applied to the digital images in the electronic image processing unit.

The invention relates to a C-arm X-ray machine. The C-arm X-ray machine comprises a main frame and a C-type rack, the main frame and the C-type rack are mutually connected through a shaft body, the C-type rack can rotate relative to the main frame, the C-type rack comprises an arm body, an X-ray generating end and an X-ray receiving end, the X-ray generating end is provided with an X-ray generator and a first metal protective cover, the X-ray receiving end is provided with an X-ray image intensifier and a second metal protective cover, the arm body is provided with a metal protective sleeve, the X-ray generator is located in the first metal protective cover and is tightly fitted with the first metal protective cover, the X-ray image intensifier is located in the second metal protective cover and is tightly fitted with the second metal protective cover, and the first metal protective cover faces to an X-ray emission hole in one surface of the X-ray receiving end. The C-arm X-ray machine is reasonable in structural design, effectively stops diffusion of ionizing radiation of an X-ray, reduces scattered rays produced by irradiation of the X-ray on a boundary region of an object, and reduces damages to a human body.