38results about How to "Avoid astigmatism" patented technology

The invention discloses a crossed combinational dual-period grating for quantum well infrared detector. By arranging two sizes of gates across, the invention responses to two wave bands and acquires the information of the two wave bands. The cross array makes a very good response uniformity of the new-type gates on the whole surface, and the two types of gates are distributed as the Chinese character 'pin', which makes the photolithography linewidth up to the maximum and thereby enhances the precision of photolithography patterns. The square gate hole is used to prevent astigmatism; the optimized parameter design enhances the coupling efficiency of the gates. The invention is applied to dual-color quantum well infrared detectors, is able to acquire the objective information more accurately in two wave bands simultaneously, more effectively inhibits the complicate background, and then enhances the detecting effect of objectives. The invention has the advantages of simple fabrication, low cost, and easy realization of mass and serial production.

The invention provides a mobile phone external optical lens including an installing seat and an optical element. The optical element is arranged in the installing seat, the optical element includes an ocular lens, a lens assembly, a prism assembly, and an object lens that are successively arranged in the height direction of the installing seat, the object lens is movably arranged in the installing seat through a sleeve, the outer surface of the sleeve is provided with a protruding part, the inner wall of the installing seat is provided with a skewed slot, the protruding part passes through the skewed slot and can move along the extension direction of the skewed slot, an adjusting member is pivoted to the outer surface of the installing seat, the inner wall of the adjusting member is provided with a groove extending along the height direction of itself, and the part, passing out of the skewed slot, of the protruding part is embedded in the groove and can move along the extension direction of the groove. The mobile phone external optical lens can adjust the distance between the ocular lens and the object lens, and adjust the distance of the shooting visual angle based on the users' needs; the additionally arranged lens assembly can enlarge the shooting visual field of the optical lens; and in addition, the shooting visual angle is clear, astigmatism can be prevented, and the effect is good.

The invention relates to a multi-airbag support device for an optical element in a lithographic projection lens system, belonging to the technical field of deep ultraviolet projection lithography lens. In order to solve the problems of the existing optical element detection device such as significant effects on lens surface types and non-uniform support force, the device comprises an optical element, a plurality of airbags, a base, an air-filled tube and a plurality of adapters; the optical element is arranged on the airbags; the airbags are uniformly arranged on the base and along the periphery, are connected with the air-filled tube through the adapters and comprise air pockets; the two sides o the bottoms of the airbags are provided with two rows of threaded holes; the bottoms of the airbags are provided with an inlets; the base comprises long holes, threaded holes, weight-reducing holes and grooves; the air inlets of the airbags are arranged in a manner of extending into the long holes in the base; the threaded holes in the bottoms of the airbags is connected with the threaded holes in the base through screws; the weight-reducing holes are arranged in the central circular area of the base; the grooves are fitted with the air-filled tube. Effects of regulating forces on the surface type of the optical element can be reduced effectively, and trefoil aberration and astigmatism caused during mechanical clamping can be avoided.

The invention discloses a fluorescence-method dissolved oxygen sensor, which comprises a measuring light path, a signal processing circuit, a shell body, an outgoing cable and a temperature sensor, wherein the measurement light path comprises a fluorescent film, an optical filter, a photoelectric detector, an excitation light source and a reference light source; the fluorescent film comprises a waterproof breathable film, a fluorescent layer and a colorless transparent glass sheet, the inner surface of the waterproof breathable film is coated with the fluorescent layer, and the colorless transparent glass sheet is bonded to the inner surface of the fluorescent layer; the fluorescent film is located at the head part of the shell body, the optical filter is located between the fluorescent film and the photoelectric detector, and the photoelectric detector is located behind the optical filter and connected with the signal processing circuit; the reference light source and the excitation light source are fixed on two sides in the shell body and are positioned on the same horizontal plane with the optical filter; and the temperature sensor is arranged on the inner wall of the shell bodyand is fixed between the optical filter and the fluorescent film. According to the fluorescence-method dissolved oxygen sensor, the fluorescent film can be prevented from falling off, much diffused light and secondary reflection are avoided, and the measurement precision and stability are improved.

The invention discloses a protection device for protecting a cell phone display which comprises, a first covering portion for covering the peripherals of one surface of the display, an opening for displaying the picture on the display, and a second covering portion extending downward from the periphery of the first covering portion to cover the side walls of the display.

The invention discloses a convenient to adjust ultraviolet curing light source which comprises a mainframe box, wherein a lift-and-pull belt and a dustproof heat dissipation hole are fixedly mounted on the outer surface of the upper end of the mainframe box; the dustproof heat dissipation hole is formed in the front end of the lift-and-pull belt; a display screen is mounted on the outer surface, close to the upper end, of the front end of the mainframe box; an adjusting knob and a switch lock are mounted on the outer surface, close to the lower end, of the front end of the mainframe box; the switch lock is positioned below the adjusting knob; a base is fixedly mounted on the outer surface of the lower end of the mainframe box; and a ventilation opening is fixedly mounted on the outer surface of one side of the mainframe box. The convenient to adjust ultraviolet curing light source is provided with a dustproof fan, a spotlight panel and the lift-and-pull belt to remove internal fallen dust and effectively aggregate ultraviolet light so as to prevent light diffusion; and the convenient to adjust ultraviolet curing light source facilitates carrying of a light source, is suitable for different working conditions and brings about better using prospect.

The invention relates to a satisfaction evaluation system of highway toll service, in particular to a lamplight modulation satisfaction evaluation system, matched with highway toll stations, of the highway toll station service. The hardware of the lamplight modulation service satisfaction evaluation system is composed of a first ground sensing coil, a second ground sensing coil, a third ground sensing coil, a single chip microcomputer control plate, a voice amplifier circuit board, a lamplight recognizer, a light emitting diode (LED) display screen, a horn and automatic handrails. The lamplight modulation satisfaction evaluation system is characterized in that the lamplight recognizer is used for receiving evaluation information, and has the advantages of being civilized and efficient, guaranteeing active and polite greetings when vehicles come, and being efficient in toll charging in a timing mode. The satisfaction evaluation system is simple, and convenient and quick to operate, can quickly release vehicles, says goodbye to the vehicles, and improves passing efficiency in highways.

The invention relates to a secondary resonance solid laser generation of high-power semi-conductor dual-end pump. Wherein, it uses optical fiber to couple the laser diode dual-end pump single laser crystal; uses matrix optics to optimize design; uses foldable four-mirror chamber structure with non-focus lens to obtain the infrared laser with high-effect resonance conversion, large base module volume and small light waist diameter; uses non-linear program to design, selects non-critical phase match and right time-frequency crystal size, via time-frequency non-focus method and foldable plane chamber structure, to obtain dual accumulated high powers, high effect single-mode secondary resonance, to be output via angle mirror polarized.

The invention discloses a display operation interface structure of a household electrical appliance. The structure comprises an appearance part, a touch key and a PCB assembly arranged on the inner side of the appearance part. The display operation interface structure is characterized in that a window paster is arranged on the external side of the appearance part; at least two spaced content displaying areas are formed on the window paster; first perforations corresponding to the content displaying areas are formed in the appearance part; the first perforations are alternately arranged; the touch key is arranged between the window paster and the appearance part and at least partially corresponds to the content displaying areas; and the PCB assembly has at least two LED lamps corresponding to the first perforations. To-be-displayed contents are formed on the paster, the perforations are alternately formed in the appearance part and the LED lamps are corresponding to the perforations, so the LED lamp light can be isolated by the appearance part and light scattering and light crosstalk can be avoided for the light due to the window paster; and therefore, adjacent displayed contents can be clearly and completely displayed.

The invention discloses a method for improving the luminous flux utilization rate of an LED automobile lamp and the LED automobile lamp. The lamp comprises a vertical plate, the top and the bottom ofthe vertical plate are fixedly connected with a first transverse plate and a second transverse plate correspondingly, the bottom of the first transverse plate is fixedly connected with a rotating device, the interior of the rotating device is movably connected with a rotating disc, the bottom end of the rotating disc is fixedly connected with a rotating rod, the bottom end of the rotating rod penetrates a rotating device and extends to the outer portion of the rotating device, the end, located outside the rotating device, of the rotating rod is fixedly connected with a lens, the rotating device comprises a fixing frame, the top of the fixing frame is fixedly connected with the bottom of the first transverse plate, and rotating grooves are fixedly connected to the two sides of the inner wall of the fixing frame. The invention relates to the technical field of LED automobile lamps. A device for improving the luminous flux utilization rate of the LED automobile lamp drives the lens to rotate, according to different lighting conditions, the luminous flux is adjusted, the lighting effect is good, the luminous flux utilization rate is improved, and light scattering is avoided.

An optical pickup is provided which is capable of minimizing an astigmatism thereof with a simple configuration. The optical pickup 6 includes a collimate lens 16 for transferring optical beams outputted from a laser diode 11 to parallel light, and an objective lens 18 for collecting the optical beams transferred to parallel light with the collimate lens 16 and applying the optical beams to an optical disk 50, wherein mounting angles of the collimate lens 16 and the objective lens 18 are adjusted so that astigmatisms of the collimate lens 16 and the objective lens 18 may be offset by each other. Thus the astigmatism of the optical pickup 6 can be minimized with a simple configuration without need for separately providing means of correcting aberration.

The invention provides an environment-friendly body building rotary massager capable of promoting motion of skin, accelerating blood circulation, eliminating fatigue of optic and cranial nerves, delaying senility and strengthening the body, which consists of a body building object (1), magnetism (2), rotary massage balls (3), a seat shell (4), a micro motor (5), a bearing (6), a driving wheel (7), a hood (8), a microcomputer (9), a driven wheel (10), a mask (11), massage balls (12), a handle (13), movable plates (14) and a belt (15). The rotary and retractable rotary massage balls have massage, extruding massage, rolling massage and rotary massage functions and an eyesight improving, cosmetic and magnetic, powder, cream, liquid, gas brain-strengthening objects and the like act on channels and collaterals of the skin in three aspects, so that the environment-friendly body building rotary massager achieves the effects of preventing, relieving and eliminating various diseases such as myopia, hyperopia, astigmatism, presbyopia, dark pouches, pouches, wrinkles, color spots, rhinitis, toothache, tinnitus, liposotrichia, dizzy of the head and dim of sight, forgettery, insomnia, migraine, neurasthenia, hypertension, lumbocrural pain, tumours and the like, improves the work efficiency, makes people keep young, and is particularly suitable for curved surfaces, rugged faces, brains and the whole body. The environment-friendly body building rotary massager has the advantages of simple structure, convenience and practicability, and is popular.

The invention discloses a stationary liquid for microscopically observing hypsizigus marmoreus basidiospores, a preparation method, a fixing method and application. The stationary liquid provided by the invention is prepared by mixing molten gelatin and a glycerol hydration agent. The stationary liquid obtained by the method is good in light transmission and safe in phase change temperature, and the method is simple, convenient and rapid, can be used for batch production, and can also be used for temporary preparation in case of urgent need. The fixing liquid is used for fixing the hypsizigusmarmoreus basidiospores, other treatment effects such as dyeing of the hypsizigus marmoreus basidiospores are not affected, the exposure time can be prolonged, and the quality of obtained hypsizigus marmoreus basidiospore image data is improved.

The invention discloses a computer display screen supporting frame convenient to adjust. A supporting plate is included, and linear guide rails are installed at the front end of the supporting plate;two sliders are connected to each of the two linear guide rails; the top end faces of the four sliders are each connected with a limiting block; fixed grooves are formed in movable clamping plates; two supporting columns are installed at the bottom end of the supporting plate; angle adjustors are installed at one end of the two supporting columns; a long supporting plate is installed at the bottomends of the angle adjustors; and two positioning hinges are installed at the top end of the supporting plate. According to the computer display screen supporting frame convenient to adjust, the two ends of a computer display screen can be clamped in the two fixed grooves correspondingly, then the two movable clamping plates are moved to clamp and fix the display screen, and stability of the display screen is guaranteed; and meanwhile the inner walls of the two fixed grooves are each provided with a sponge soft pad, the sponge soft pads avoid that abrasion is caused to the display screen by the movable clamping plates, and integrity of the display screen is guaranteed.

The invention provides a visible light-short wave infrared-medium wave infrared-long wave infrared four-waveband optical system which solves the problems that existing single-waveband equipment can detect limited information and cannot meet the requirement for more comprehensive and more accurate target detection. The system comprises a main reflecting mirror, a secondary reflecting mirror, a first folding shaft mirror, a first spectroscope, an infrared focusing mirror group, a second spectroscope, a visible light channel subsystem, a short-wave infrared channel subsystem, a medium-wave infrared channel subsystem and a long-wave infrared channel subsystem, the secondary reflecting mirror divides the light beam reflected by the main reflecting mirror into two paths, namely a visible light-short wave infrared light beam and a medium wave infrared-long wave infrared light beam, a visible light-short wave infrared light beam is divided into two paths after passing through the first foldingshaft mirror and the first spectroscope, and the two paths enter the visible light channel subsystem and the short wave infrared channel subsystem respectively. A medium wave infrared-long wave infrared light beam is divided into two paths after passing through the infrared focusing lens group and the second spectroscope, and the two paths respectively enter the medium wave infrared channel subsystem and the long wave infrared channel subsystem.

Disclosed is a reflective lighting optical system. The reflective lighting optical system can minimize a back focusing distance and a depth of the system, and improve a lighting efficiency by disposing a wire grid type PBS (Polarized Beam Splitter) at an oblique angle with respect to a short side of an imager.

The invention discloses a display device in order to improve resolution of video image, and avoid generating astigmation phenomena of electron beam. The invention includes following parts: multiple cathodes generating multiple electron groups with energies; formation area of electron beam and electron lens area located between cathode and display screen; the electron lens area positioned between formation area of electron beam and display screen. Formation area of electron includes multiple special arranged first group of electrode. Each electrode includes at least one more first holes of pole arranged in line to increase section for electrons with energy to pass through in order to form electron beam. Electron lens area includes multiple special arranged second group of electrode. Each electrode includes at least more than two common holes of pole arranged along longitudinal axis for electrons to pass through in order to form multiple layer common lenses.

The invention discloses an LED driving apparatus capable of adjusting illumination. The LED driving apparatus comprises a current adjustment apparatus, a processor, an LED driving circuit and an LED lamp connected in sequence, wherein the an illumination sensor is further connected between the output end of the LED lamp and the current adjustment apparatus; and the current adjustment apparatus is an impulse modulation dimmer or a current regulator. Through the above principle, the LED driving apparatus can collect indoor illumination through the illumination sensor, and can process the illumination for realizing constant-illumination light dimming indoors.

The invention relates to a satisfaction evaluation system of highway toll service, in particular to a lamplight modulation satisfaction evaluation system, matched with highway toll stations, of the highway toll station service. The hardware of the lamplight modulation service satisfaction evaluation system is composed of a first ground sensing coil, a second ground sensing coil, a third ground sensing coil, a single chip microcomputer control plate, a voice amplifier circuit board, a lamplight recognizer, a light emitting diode (LED) display screen, a horn and automatic handrails. The lamplight modulation satisfaction evaluation system is characterized in that the lamplight recognizer is used for receiving evaluation information, and has the advantages of being civilized and efficient, guaranteeing active and polite greetings when vehicles come, and being efficient in toll charging in a timing mode. The satisfaction evaluation system is simple, and convenient and quick to operate, can quickly release vehicles, says goodbye to the vehicles, and improves passing efficiency in highways.

The invention provides a kind of diffraction components which use diffracted wave bundles and undiffracted wave bundles, abolish the offset of track and prevent the occurrence of astigmatism, and CD devices which use said diffraction components. Said diffraction components (8) have a number of furrows (81) and convexes (82) which are ranked alternately to a grid regional (86) correspondingly on the surface, while the both surface along the furrows (81) are smooth flat regions (87,88), which are located on the same height of the center of the furrows (81) in depth. Therefore, the furrows (81) are located on the area which is smaller than the section area of beam via setting diffraction components. Even as used as (3) fasciculated beam creating components, it also can prevent diffraction components (8) creating astigmatism, because the flat regions (87, 88) are located on the same height of the center of the furrows (81) in depth.

The invention discloses an optical module, which is characterized in that two opposite end surfaces of a tube body are respectively connected with a light emitting device and an optical fiber adapter, and a first light receiving device and a second light receiving device are arranged on a third end surface and a second end surface which are adjacent. According to the optical module provided by the invention, in a light emission process, signal light at different positions perpendicular to the first end surface has the same incident angle and the same optical path when passing through the first optical filter, and has different incident angles and different optical paths when passing through the second optical filter; signal light at different positions parallel to the first end face has different incident angles and different optical paths when passing through the first optical filter, and has the same incident angle and the same optical path when passing through the second optical filter, so that the first optical filter and the second optical filter have the same influence on the signal light, the generated aberration is the same, astigmatism is avoided, and the coupling efficiency is improved.

The invention relates to an LED array light source, comprising LED substrates, LED arrays, a film filter and a transparent rod, wherein the film filter is arranged on the outer wall of the transparent rod, the LED arrays are fixed at the sides, close to the transparent rod, of the LED substrates and are electrically connected with the LED substrates, and the LED arrays are arranged at one side, provided with the film filter, of the transparent rod. Light emitted by the LED arrays enters the transparent rod via the film filter, and the light in the transparent rod is emitted out from one end of the transparent rod after being reflected by the film filter. Therefore, all light emitted by the LED arrays can be concentrated to form a point light source with a small light emission area so as to avoid light scattering, and the light utilization rate is high. The LED array light source can be applied to an occasion of concentrated projection, and is convenient to use and low in cost.

The invention discloses natural rehabilitation pinhole sight glasses for treating pseudomyopia. The sight glasses are natural and non-toxic, and have no side effect. The structure of the sight glasses is the same as that of ordinary glasses, and a plurality of small holes are evenly distributed on lens. Patients with pseudomyopia wear the sight glasses, which can eliminate asthenopia caused by the glasses and help naturally improve eyesight with obvious improvement in 2-4 weeks.

The invention discloses a film thickness measuring device which comprises a bearing platform, a fixing device, a measuring unit, a communication wire and a post-processing unit. The bearing platform is used for bearing a film thickness to-be-measured sample; the fixing device is provided with a plurality of measuring holes which are distributed in an array mode; the measuring unit comprises a measuring probe; and the post-processing unit is used for analyzing and processing the signal from the measuring unit and outputting a measuring result. According to the invention, the measuring probes are introduced into the measuring unit and are distributed in an array mode, multi-point thickness measurement is carried out on the to-be-measured film thickness sample at one time, and measurement data of each point are integrated, so that thickness characterization of a large-area film coating film layer is accurately and efficiently completed; and film thickness measurement can be carried out on a film layer with special requirements in a special environment.