450results about How to "Guaranteed miniaturization" patented technology

The invention discloses a thin optical system, an image acquisition device and an electronic device. The thin optical system comprises a first lens, a second lens and a third lens with refractive power sequentially from an object side to an image side, wherein the first lens has negative refractive power, and the image side surface is a concave surface near an optical axis; the second lens has refractive power, at least one surface is an aspheric surface, and the second lens is made of plastic; the third lens has positive refractive power, at least one surface is an aspheric surface, and the third lens is made of plastic. Three lenses with refractive power exist in the thin optical system. The thin optical system further comprises an aperture arranged between the first lens and the second lens. The first lens, the second lens and the third lens have no mutual relative movement on the optical axis. When a specific condition is met, the thin optical system can be designed to be retrofocus, thereby enhancing telecentric effects. The invention also discloses an image acquisition device provided with the above thin optical system and the electronic device provided with the image acquisition device.

The invention reveals a high efficiency methanol-water hydrogen production system and a hydrogen production method thereof. The system comprises a liquid reservoir vessel, a heat exchanger, a vaporizer, a reforming chamber and a separation chamber, wherein the liquid reservoir vessel, the heat exchanger, the vaporizer, the reforming chamber and the separation chamber are successively connected through pipelines, a ceramic membrane separator and a metallic palladium membrane separator are arranged in the separation chamber, gas entering into the separation chamber is pretreated by the ceramic membrane separator to obtain high purity hydrogen, and then the high purity hydrogen enters into the metallic palladium membrane separator so as to obtain hydrogen with higher purity. According to the high efficiency methanol-water hydrogen production system and the hydrogen production method thereof, the high purity hydrogen (with a purity of about 99%) is separated from reformed gas through the ceramic membrane separator at first, and then the hydrogen with higher purity (more than 99.9999%) is separated through the metallic palladium membrane separator.

The invention relates to an amphibious robot, in particular to an amphibious robot with integrally-driven wheel paddle legs. The amphibious robot comprises a front buoy, a middle-front buoy, a watertight electronic cabin, a middle-back buoy, a back buoy, a frame and wheel paddle leg driving modules, wherein the front buoy, the middle-front buoy, the watertight electronic cabin, the middle-back buoy and the back buoy are sequentially arranged on the frame; the frame is provided with a plurality of groups of wheel paddle leg driving modules; two wheel paddle leg driving modules are combined into one group and are symmetrically arranged at two sides of the frame; each wheel paddle leg driving module comprises a wheel paddle leg direct driving joint and a rotary joint, and the wheel paddle leg direct driving joint is rotatably connected with the rotary joint. By adopting three groups of symmetric wheel paddle leg driving modules, the requirement of multiple movement modes of crawling and floating of the robot under the amphibious conditions is met, stability, quickness and harmony of movement of the robot are realized at the same time, and the amphibious robot has the advantages of flexible movement, strong environment adaptation, outstanding obstacle-detouring ability and the like.

The invention relates to an LED backlight integrating encapsulation structure and encapsulation method. The encapsulation structure comprises a substrate (1) and a reflecting layer (6) arranged on the substrate (1), wherein a light-guiding diffusion plate (7) and a prism plate (8) are arranged on the substrate (1) successively provided with the reflecting layer (6) from bottom to up. The encapsulation structure is characterized in that LED blue dies are arranged on the substrate (1) in an array mode. The encapsulation method comprises the following steps: embedding the LED blue dies, coating solder paste on high conductivity substrate material, bonding dies through reflow soldering, fixing the LED blue dies on the substrate, and adopting ultrasonic wire bonding technology to connect the LED and a circuit board. The LED blue dies are covered with yellow fluorescent powder and epoxy resin and the reflecting layer is plated on the heat-conducting substrate so that the luminous efficiency and heat dissipation effect of the LED are increased and the rays are parallel and uniform. The encapsulation method is used to reduce power consumption, increase luminous efficiency, prolong the life of the device and save energy. The volume of the encapsulation structure is reduced and the backplane becomes lighter and thinner.

A power amplification module of frequency conversion is featured as filtering out secondary harmonic wave component from frequency doubled signal by local oscillator filter ; carrying out frequency conversion in frequency mixer after filtered - out frequency double signal is amplified by local oscillator amplifier ; amplifying converted frequency signal by radio amplifier ; carrying out band pass filtering of radio frequency signal by filter ; using gain amplifier , power driving amplifier and power synthetic amplifier to be pre-amplification and high power amplification for outputting high power mm wave signal .

The invention provides a gallium arsenide dual-mode band-pass filter and a manufacturing method of the gallium arsenide dual-mode band-pass filter. According to the filter, the requirement for a miniaturized millimeter-wave circuit is met, the insertion loss is small, and the selectivity is high. According to the technical scheme, a loading branch and a lambda/2 resonator constitute a bent branch line loading type dual-mode resonator of an annular structure; microwave signals fed through an input micro-strip are transmitted to an output micro-strip through two physical channels of the filter, so that frequency selection of a pass band is achieved, wherein according to one channel, the signals are transmitted through an input coupling branch and an output coupling branch, an extra out-of-band transmission zero is provided, and the position of the zero is adjusted through the lengths and the coupling distances of the input coupling branch and the output coupling branch, and according to the other channel, the microwave signals are coupled to the dual-mode resonator through an incoming feeder and then are coupled to the output micro-strip through the dual-mode resonator, two transmission pole pass bands and two transmission zero stop bands are formed by the dual-mode resonator, and one of the transmission pole pass bands and one of the transmission zero stop bands are provided by a dual module of the dual-mode resonator.

The invention provides a 3D integrated framework of an ultrahigh frequency power converter. The 3D integrated framework comprises a PCB circuit layer and a winding unit erected on the PCB circuit layer. The winding unit is connected with the PCB circuit layer through a wire. The winding unit comprises winding layers formed on a first insulating layer and a first soft magnetic thin film layer formed on a second insulating layer. The first soft magnetic thin film layer is arranged below the winding layers in a laminated mode to be used for achieving magnetic shielding between the winding layers and the PCB circuit layer. Compared with the prior art, by the adoption of 3D integration, the size of the converter is reduced, and the power density is increased; soft magnetic materials are adopted to form the magnetic shielding layer, magnetic field interference between windings and the PCB circuit layer and between the windings and external metal is solved, the Q value of the windings is increased, the alternating current resistance and high-frequency loss of an inductor and a transformer are reduced, and the working efficiency of the converter is improved; a plane magnetic element is further adopted, and the miniaturization and flattening of products are guaranteed; temperature rising of the magnetic element is reduced greatly, and the working environment of a semiconductor device is improved.

The present invention relates to a three-unit zoom lens system and an image pick-up device using the same. A three-unit zoom lens system includes in order from an object side thereof a first lens unit G1 having a negative refracting power, a second lens unit G2 having a positive refracting power, a third lens unit G3 having a negative refracting power, and an aperture stop which is at an image side of the first lens unit G1, and at the object side of a lens surface nearest to the image side of the second lens unit G2, and which moves integrally with the second lens unit. At a time of zooming from a wide angle end to a telephoto end, a distance between the first lens unit G1 and the second lens unit G2 is narrowed, and a distance between the second lens unit G2 and the third lens unit G3 changes. The second lens unit G2 moves toward the object side at the time of zooming from the wide angle end to the telephoto end. The third lens unit G3 moves to be positioned at the object side at the telephoto end, with respect to the wide angle end. The three-unit zoom lens system satisfies predetermined conditional expressions.

The invention discloses a containment passive pressure suppression system. A pressure suppression pool of the system comprises a water space and an air space, wherein the water space is arranged around a reactor pit and communicates with a containment drywell; cooling water is contained in the water space; the initial water level in the water space is higher than a reactor core in the reactor pit; the air space is arranged around the water space and communicates with the water space. The water space and the air space are in transverse arrangement, so that the height of the pressure suppression pool is reduced, so that the space volume of the pressure suppression pool occupied by the containment is reduced; the dimension of the containment can be further reduced; meanwhile, the duplex isolation function can be realized; the realization of the radiation shielding function is facilitated, so that the containment can use the single layer structure; the structure is simpler; the small-size design of the containment of a marine nuclear power station is facilitated. In addition, the air isolation is realized between the water space and the air space; the air-water isolation can also be ensured in the swinging environment.

The invention discloses an optical imaging lens group, an image capturing device and an electronic device. The optical imaging lens group comprises, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens and a fifth lens which have refraction power. The first lens has positive refraction power and an object side surface, close to an optical axis, of the first lens is a convex surface. The second lens has positive refraction power and an object side surface, close to an optical axis, of the second lens is a convex surface. The third lens has refraction power. The fourth lens has positive refraction power; an object side surface, close to an optical axis, of the fourth lens is a convex surface; an image side surface close to the optical axis is a convex surface; and the object side surface and image side surface are both aspheric surfaces. The fifth lens has negative refraction power; an object side surface, close to an optical axis, of the fifth lens is a concave surface; an image side surface close to the optical axis is a concave surface; the image side surface, away from the axis, is provided with a convex surface; the object side surface and the image side surface are both aspheric surfaces. Any two of the above adjacent lenses are spaced by air. The invention also discloses an image capturing device provided with the optical imaging lens group and an electronic device provided with the image capturing device.

The invention discloses an optical lens, an image capturing apparatus and an electronic apparatus. The optical lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens in order from an object side to an image side. The first lens has negative refractive power, and the portion, near an optical axis, of the surface of an image side of the first lens is a concave surface. The second lens has refractive power. The third lens has positive refractive power. The fourth lens has positive refractive power, and the portion, near the optical axis, of the surface of an image side of the fourth lens is a convex surface. The both surfaces of the fourth lens are aspherical. The fifth lens has negative refractive power, and the portion, near the optical axis, of the surface of an image side of the fifth lens is a concave surface. The portion, away from the optical axis, of the surface of an image side of the fifth lens includes at least one convex surface. The both surfaces of the fifth lens are aspherical. The sixth lens has refractive power, and the portion, near the optical axis, of the surface of an image side of the sixth lens is a concave surface. The portion, away from the optical axis, of the surface of an image side of the sixth lens includes at least one convex surface. The both surfaces of the sixth lens are aspherical. When a specific condition is satisfied, the sensitivity of the optical lens is lowered, and a visual angle of the optical lens is enlarged.

The invention discloses a small atmosphere laser communication device and method. The device comprises a small atmosphere laser communication machine and a sighting telescope. The small atmosphere laser communication machine comprises an optical window, a beam splitting prism, a semiconductor laser, an Nd: YAG laser, a PIN photodiode and a light spot tracker. Besides traditional laser communication, a beam aligning unit is added, and accordingly, by the aid of visual reflection of detection beams emitted by the Nd: YAG laser on a four-quadrant diagram of the four-quadrant light spot tracker, the light spot center is adjusted to the four-quadrant center rapidly through a manual or servo system, and rapid alignment of the communication transmission end and the communication receiving end is achieved. The device and the method have the advantages of being small in size, low in weight, stable in communication, fast in alignment speed and the like.

The invention provides an electronic sphygmomanometer which comprises a body and a cuff, wherein the cuff comprises a lining plate; at least one fixed clamping hook is arranged at one end of the lining plate, and a releasable clamping hook is arranged at the other end of the lining plate; each of the fixed clamping hook and the releasable clamping hook comprises a hooking part and a supporting arm; shoulder parts are extended from two ends of the supporting arm of the releasable clamping hook, and the releasable clamping hook is provided with a gap; the bottom of a lower shell is provided with a fixed end clamping groove and a releasable end clamping groove corresponding to the fixed clamping hook and the releasable clamping hook, and a blocking part is arranged on one side of the releasable end clamping groove buckled with the hooking part; an elastic sheet is arranged close to the releasable end clamping groove on the inner surface of the bottom of the lower shell, the elastic sheet comprises a touch part and an elastic part, and the touch part covers a part of the releasable end clamping groove; and the side wall of the lower shell is provided with a through hole, and the through hole is opposite to the touch end face of the touch part of the elastic sheet through the gap in the releasable clamping hook. The electronic sphygmomanometer ensures reliable connection between the cuff and the body in use, is convenient to detach and simple in structure, and is integrally miniaturized.