49 results about "Vision Clear" patented technology

The invention relates to a progressive addition lens with fixed channel length. The progressive addition lens comprises a distant vision zone, a near vision zone and a progressive channel. The length of the progressive channel having a focal power change amount being 85% of additional focal power on different lens meridian lines with different additional focal powers is 15mm. A vision clear range (astigmatism smaller than 0.25 diopters) on the progressive channel penetrates through the distant vision zone and the near vision zone. The vision clear range of the distant vision region has a sector shape with a 90-degree to 120-degree central angle; the vision clear range of the near vision region has a bell shape facing downwards and having a 37-degree to 57-degree flare angle; and the focal power change is smaller than 0.25 diopters in the vision clear range of both the distant vision zone and the near vision zone. According to the invention, the contour line distribution is obtained by dissolving Laplace's equation by a numerical method; an arctan function serves as the meridian line of the lens; and surface rise data of the lens to be processed can be obtained by designing the focal power distributions on the contour line and the meridian line cooperatively. The lens provide by the invention can effectively improve comfort of wearers.

The invention discloses a monitoring equipment device for cleaning the interior of an earth pressure bin. The device comprises a mirror frame, a lens is arranged in the mirror frame, the mirror frameis connected with a shell, the shell is connected with the wall of an earth pressure bin through a flange base, a camera is arranged in the shell, a lens of the camera faces the lens, and cleaning equipment used for cleaning the lens is arranged on the mirror frame. The monitoring equipment device has the beneficial effects that the monitoring effect on the cutter under the severe environment of high temperature, high pressure and darkness of the earth pressure bin in the shield tunneling machine is achieved; and under the condition that the window is shielded by mud, cleaning can be conductedthrough high-pressure water and high-pressure gas, and it is guaranteed that the view is clear.

The invention discloses a medical isolation mask. The mask comprises a cap body, wherein an arc-shaped mask is arranged on the front portion of the cap body; a writing area is arranged on the cap body; the two ends of the cap body are connected with binding bands through resin buckles, and high-elasticity sponge strips and rubber bands which are matched with the binding bands in specification areadditionally arranged in the binding bands. Compared with the prior art, the disclosed mask has the advantages that the mask integrates the functions of protecting the eyes, the mouth and the nose, the pressure caused by long-time wearing can be relieved when the protective mask is worn on the forehead, and the wearing comfort of medical workers is improved; the arc-shaped mask effectively shieldsvarious splashes, plays a better role in isolation and protection, cannot cause contact infection, is reasonable in structure, is suitable for workers with various head types, can directly cover myopia glasses, and facilitates work. An ergonomic design is adopted, the visual field is clear, and wearing is firm and reliable.

The invention relates to a visual field clearing agent for an endoscope. The visual field clearing agent is a water solvent containing a high-molecular hydrophilic polymer, and comprises the followingcomponents in percentage by weight: 0.01 to 10 percent of mucopolysaccharide and/or mucopolysaccharide ester represented by a structural formula 1, wherein n = 1 to 80, R1 = H or Na, R2 = H or SO3Na,R3 = COCH3 or SO3Na; 0.9 to 4.5 percent of sodium chloride; and the balance of water.

The invention relates to a multifunctional myopic control eyeglass. The eyeglass which comprises a glass frame with height-adjustable nose supports, and eyeglasses is characterized in that: each eyeglass comprises an upper far luminosity zone, a middle zone and a lower close reading zone; and there is a visual channel with two degree changes, wherein one degree change is between the optical center of the upper far luminosity zone and the optical center of the middle zone just below the upper far luminosity zone, and the other degree change is between the optical center of the middle zone and the optical center of the close reading zone just below the middle zone. The eyeglasses are specially divided into three zones for the zero adjustment and the zero aggregation of reading and writing in the invention, so problems of the adjustment and the aggregation of close range reading and writing are thoroughly solved, the visual fatigue is eliminated, and myopia and degree increase are prevented, thereby present computer times of the comprehensive eye utilization are complied. The multifunctional myopic control eyeglass which allows previous neglected computer groups to be substantially facilitated allows the visual field to be clear, real and stable through the humanized zone height of each zone of the eyeglasses. The three zones which are used for cooperating with the adjustment of the eyeglass frame allow an image jumping phenomenon to be avoided. The wearing position of the eyeglass is accurate to guarantee the correct utilization of each zone, prevent the generation and the development of myopia caused by the fatigue of internal and external muscles of eyes and ciliary muscles.

The invention provides a method of obtaining data cubes such that elimination of the irrelevant portion of the illumination reveals the low intensity intrinsic spectral components. The method obtains target and reference data cubes using a single camera and of a single field of view so that low-level intrinsic spectral components may be detected and enhanced under conditions of high illumination intensity without the use of filters. Two exposures in rapid succession of the same field of view at the same camera settings are taken, one exposure of the target is taken under coherent conditions where the field of view is in focus, and the second exposure is of the same field of view taken under non-coherent conditions where the target is defocused such that it has no discernible spatial features in the field of view. Residual spectra previously determined is added to the defocus spectra in the defocus data cube of the target of interest resulting in an adjusted reference spectra, which in turn is subtracted from the corresponding focused spectra in the focused data cube of the target of interest resulting in a focused target data cube each of whose pixels is associated with its intrinsic spectrum.

The invention relates to the field of fire-fighting helmets, and discloses a safety helmet for life saving and fire fighting. The helmet comprises a fire-fighting helmet body, a fireproof sealing sleeve used for sealing is arranged at the bottom of the fire-fighting helmet body, goggles are arranged on the front face of the fire-fighting helmet body, and helmet outer edge plates located on the upper side and the lower side of the goggles are arranged on the fire-fighting helmet body. And a cleaning wiping plate capable of moving up and down is arranged between the two helmet outer edge plates.According to the safety helmet for lifesaving and firefighting, through a standing wiping plate arranged at the eyepiece of the helmet, power-on and power-off of an electromagnet is controlled and the elastic force of a reset spring is used for cooperation, a cleaning wiping plate moves upwards and downwards to clean goggles twice, and when smoke dust is attached to the goggles on a fire scene, the smoke dust is cleaned away when the view of firefighters is not clear; clear view of firefighters during rescue work is guaranteed, and a problem that the goggles are polluted again due to dirt onhands when the firefighters wipe the goggles directly is solved.

The invention relates to the technical field of video recording equipment, and discloses a lens front accumulated dust removing device for a security and protection video recording camera. The devicecomprises a shell, a lens is fixedly arranged below the shell, a rack meshed with the lens is moved through the rotation of a gear, and the rear side of the rack is connected with the telescopic end of a telescopic rod; the telescopic rod carries out the telescoping operation; the camera device rotates in the middle of the movable rod, the camera shooting angle is adjusted, manual adjustment is avoided, and accidents caused by adjustment of the camera angle by security personnel are reduced. A rotating wheel rotates to enable a moving rod to slide in a sliding groove of a U-shaped block, the moving rod pushes a fourth connecting point of a folding rod to slide on the sliding groove, the folding rod is unfolded under the driving of the moving rod, and a cleaning brush installed on the folding rod is used for cleaning and wiping surface dust, so that the cleaning degree in front of a lens is guaranteed; and the video quality and the clear visual field are ensured.

The invention relates to the technical field of medical equipment, in particular to a visual rigid ureteronephroscope which comprises a guide sheath, a guide support and a nephroscope body, the guidesupport is inserted into the guide sheath, the nephroscope body is inserted into the guide support, the guide sheath is connected with the guide support through a clamping hook type structure, and theguide support is connected with the nephroscope body through a clamping hook type structure, and the guide sheath comprises a convolution cavity suction head main body and a guide sheath; the nephroscope comprises a nephroscope tube and a nephroscope body which are fixedly connected, the guide support comprises a guide tube and a conical cavity which are integrally formed, a pressure relief groove is formed in the guide tube, the pressure relief groove is matched with the pressure monitoring hole of the guide sheath, and a perfusion channel and an instrument channel of the nephroscope do notinterfere with a suction channel and a pressure detection connector of the guide sheath. The visual rigid ureteronephroscope has the advantages of reasonable design, clear view, safety, reliability, capability of monitoring intracavity pressure in real time and intelligent lithotripsy and lithotripsy; and the nephroscope, the guide support and the guide sheath are reasonable in design, matched with one another and convenient to operate and use, the intracavitary calculus removing technology is innovated, and the safety rate and calculus removing efficiency of an operation are remarkably improved.

The invention discloses an endoscope capable of continuous underwater operation. The endoscope comprises a shell, an imaging device used for stretching into the ear and shooting, an illuminating system used for providing illumination for a shooting area of the imaging device, and a cleaning system used for extending into the ear to clean the shooting area. The cleaning system, the imaging device and the illuminating system are arranged on the shell; the cleaning system is arranged on the imaging device so that the cleaning system and the imaging device can extend into the ear at the same time;the illuminating system is connected to the imaging device; and the imaging device can shoot the condition in the ear and generate an image. Because there is no light in the ear, the illuminating system needs to provide lighting, and the cleaning system and the imaging device are simultaneously inserted into the ear; when the area shot by the imaging device is bleeding or sclerotin needs to be cleaned, the area shot by the imaging device can be continuously perfused and circularly flushed by connecting an external water source with the cleaning system, so that the visual field can be kept clear all the time; other auxiliary devices are not needed and surgical operation does not need to be interrupted, thus improving the surgical efficiency.

The invention provides a vehicle window automatic heating control method, a device, equipment and readable storage medium. The vehicle window automatic heating control method comprises the steps of determining the pre-travel moment; obtaining the vehicle internal temperature at the current moment and the weather condition of the location of the vehicle; when the internal temperature of the vehicle is smaller than a preset temperature, determining a time interval corresponding to the weather condition according to the pre-travel time and the weather condition; comparing the current moment with a lower limit value of the time interval; if the current moment is consistent with the lower limit value of the time interval, a vehicle window is heated in a conventional heating mode corresponding to the weather condition; and if the current moment is behind the lower limit value of the time interval, a vehicle window is heated in an emergency heating mode corresponding to the weather condition. On the basis of judgment on the driving habits and the weather conditions of the user, the vehicle window is preheated in advance in a targeted mode, it is guaranteed that the visual field of the user is clear when the user gets on the vehicle, and therefore normal travel of the user is not affected.

The invention discloses a device capable of eliminating water mist and dirt on a bronchofiberscope lens and keeping a clear visual field, which is characterized by comprising an outer protective cover, a transparent top cover, an upper scraping and sweeping part, a lower scraping and sweeping part, a scraping and sweeping part connecting structure, an electric heating wire and a control rod, the upper end and the lower end of the outer protective cover are open, the transparent top cover is integrally connected to the opening in the upper end, the upper scraping and sweeping part and the lower scraping and sweeping part are movably connected to the transparent top cover through a scraping and sweeping part connecting structure, and the upper scraping and sweeping part and the lower scraping and sweeping part are located on the upper face and the lower face of the transparent top cover respectively. An interlayer is arranged in the transparent top cover, and a circle of electric heating wire is arranged in the interlayer; the upper end of the control rod is detachably connected with the lower end of the scraping and sweeping part connecting structure; the device is detachably arranged at the end part of the bronchofiberscope and is used for protecting a lens of the bronchofiberscope without influencing normal visual field observation; the dirt or water mist in the visual field can be removed in vitro through a control structure of the device; the lens is protected, and the service life of the lens is prolonged.

The invention relates to the field of medical instruments, in particular to an endoscope surgery cavity builder. The cavity builder comprises an endoscope lens protection part and a supporting part, wherein the endoscope lens protection part is connected with the supporting part in a sliding mode and is attached to the supporting part; the supporting part is used for establishing an operation space; the endoscope lens protection part is provided with a through cavity for an endoscope lens to penetrate through; and after the operation space is established, the endoscope lens protection part supports the supporting part, and the endoscope lens penetrates through the cavity and moves to a target position. The cavity builder has the beneficial effects that the established operation space is supported by the supporting part and the endoscope lens protecting part, and inflation is not needed, so that inflation complications, especially gas embolism, are avoided; the operation space communicates with the outside, and the endoscope lens is protected by the endoscope lens protection part from being polluted, so that the view definition of the operation space is improved; and the structure is simple, the operation steps are few, the surgical operation time is shortened, the flap rupture risk is reduced, and the surgical safety is improved.

The invention provides a pair of protective glasses based on a 5G information network, and the glasses comprise a nose frame, wherein lens frame devices are symmetrically arranged on both sides of thenose frame, each of the lens frame devices is equipped with a lens, the upper and lower sides of the lenses are respectively provided with an upper slide groove and a lower slide groove, a retractable shielding plate is provided above the upper slide groove, a lens cleaning device is provided on one side of the shielding plate, a squeezing device is provided on one side of the lens cleaning device, a filtering device is provided below the squeezing device, one of the lens frame devices is also provided with a 5G monitoring device, a dust blowing device is provided above the nose frame, and both sides of the dust blowing device are connected to the lens cleaning device. The invention provides a pair of protective glasses based on the 5G information network, and uses the lens cleaning device to simultaneously clean the inner and outer sides of the protective glasses to ensure clear vision of the protective glasses.

The invention relates to the technical field of medical instruments, and discloses a visual tracheal intubation guiding device which comprises a guide tube, a display device, a camera, a light source and an end-expiratory carbon dioxide concentration detection device, the guide tube is arranged in a tracheal intubation in a penetrating mode, and real-time images of a trachea structure are transmitted to the display device through the camera; the carbon dioxide concentration distribution in front of the guide pipe is detected through the end-expiratory carbon dioxide concentration detection device. If the interior of the trachea is not shielded and the visual field is clear, the camera displays the trachea structure to help medical staff to perform intubation, if various conditions such as tissue swelling, secretions and bleeding occur in the trachea, the camera cannot display the trachea structure, and the end-expiratory carbon dioxide concentration detection device can detect the distribution of the carbon dioxide concentration in front of the guide tube; the intubation direction can be achieved when the concentration is high, so that the assisting effect is achieved. Through the guiding of the guiding device, the difficulty of tracheal intubation is greatly reduced, and the accuracy is high.

The invention relates to the technical field of mechanical devices, in particular to a device capable of making a driver keep the vision clear in the rain. The device comprises a shell and a fan, wherein the fan is an inner rotor centrifugal fan; the shell is divided into an upper shell body and a lower shell body, the middle of the upper shell body is provided with a cylindrical groove, and the middle of the lower shell body is provided with a hollow cylinder as an air inlet; a motor of the inner rotor centrifugal fan is arranged in the cylindrical groove of the upper shell body; the upper shell body is connected with the lower shell body through a supporting column or a supporting plate, and a gap is formed as an air outlet. The device cannot make rainwater float onto windshield glassesof motorcycle helmets or front windshields, rearview mirrors and glass for viewing the rearview mirrors of automobiles on rainy days, and makes the driver see the front road condition clearly while driving in the rain, thereby reducing traffic accidents.

The invention belongs to the technical field of firefighting equipment, and particularly provides a firefighting self-rescue respirator. The self-rescue respirator comprises a fireproof helmet and a filtering tank; an eye window is arranged on the outer wall of the fireproof helmet; a transparent thin film is adhered to the outer surface of the eye window; a supporting plate is installed on the fireproof helmet on one side of the eye window; slide rods are symmetrically connected with the lower end and the upper end of the supporting plate; slide blocks are slidably connected with the slide rods; springs are sleeved on the slide rods between the slide block and the supporting plate; first magic tape is arranged on the side surfaces of the slide blocks; second magic tape is connected with the end parts of the transparent thin film. Through the arrangement of the transparent thin film and a sliding mechanism, a user wearing the respirator can remove the transparent thin film with dust thereon from the eye window via the sliding mechanism, the visual clearness of the user is greatly improved, and at the same time the transparent thin film is conveniently and rapidly removed, so the effectiveness and rapidness of use of the firefighting self-rescue respirator can be effectively improved.