35results about How to "Good projection quality" patented technology

The invention discloses a zoom projection lens, which is used to make original image which is at image source side project on image side to form projective image, a projective system of the zoom projection lens sequentially comprises a first lens group with negative diopter, a second lens group with positive diopter, a third lens group with positive diopter and a fourth lens group with negative diopter and a fifth lens group with positive diopter from the imaging side. When the zoom projection lens changes from the amplifying end to the shrinking end, the first lens group and the fifth lens group are firmly fixed, and the second lens group, the third lens group and the fourth lens group all move towards the imaging side; the zoom projection lens can meet special condition so as to improve the projection quality. The zoom projection lens also comprises an automatic light ring which can move along with the fourth lens group together.

The invention provides an ultra wide-angle lens. The lens comprises: a first lens group possessing a negative focal power, a second lens group possessing a positive focal power, wherein the first lens group comprises a first spherical lens, a second spherical lens and a third spherical lens which are successively arranged from an object side to an image side; the first spherical lens, the second spherical lens and the third spherical lens are the negative, negative and positive focal powers respectively; the second lens group comprises a fourth spherical lens and a fifth spherical lens which are successively arranged from the object side to the image side; the fourth spherical lens and the fifth spherical lens are the positive and negative focal powers respectively. The ultra wide-angle lens satisfies the following conditions: 0.01< D / | FG1|<1 and 2<D / FG2<4, wherein D is a distance from an object side surface of the first spherical lens to an imaging surface of the ultra wide-angle lens along an optical axis direction; FG1 is an effective focal length of the first lens group and FG2 is the effective focal length of the second lens group. By using the ultra wide-angle lens which satisfies the above conditions, a projection quality is high and costs are low.

The invention relates to a combined construction mould for dust-free room air return slabs and a combined construction method thereof. An upper mould and a lower mould are fixedly connected into a whole body in a locking way through a locking piece to form a cylindrical mould. A force application handle is arranged on a cylindrical surface in the upper mould and the opening end of the upper mould can be tightly covered by a cover. A base extends from the edge of the opening of the lower mould. The construction method is that the combined construction mould is arranged on a building template according to the configuration of the air return holes of the slabs, the base is firmly nailed on the building templates through iron nails, the cover of the upper mould is tightly closed before grouting and is opened after the grouted concrete is set, the locking piece is unlocked, the upper mould is pulled out through a suspension device and finally a knocking tool is used for knocking and applying force to the lower mould to strip off the lower mould. The combined construction mould can be repetitively used and can be conveniently fixed and removed, so the construction cost is saved and the construction period is shortened.

A projector includes a light source, an optical engine module, and a projection lens. The light source is configured for providing an illumination beam. The optical engine module includes a light valve, a casing, and a heat conducting structure. The light valve is configured to convert the illumination beam into an image beam. The light valve has a front portion and a rear portion opposite to each other. The casing is connected to the front portion. The heat conducting structure is disposed on the casing and at at least one side of the front portion. The projection lens is disposed on the casing and configured to project an image. The heat conducting structure is configured to dissipate heat of the casing and the front portion of the light valve.

The present invention discloses zooming projection lens capable of installing in projection display device. Zooming projector lens includes first lens assembly having negative dioptre and second lens assembly having positive dioptre, wherein first lens assembly consisting of plurality of lens near by image surface and capable of moving along optical axis, second lens assembly consisting of plurality of lens near by object plane and capable of moving along optical axis, one aperture stop set between two adjacent lens of second lens assembly, said aperture stop capable of moving along with second lens assembly, said zooming projector lens capable of correcting aberration, thereby raising projection quality.

The invention relates to an energy conveying pipeline connecting and paving construction method. The energy conveying pipeline connecting and paving construction method mainly comprises the followingsteps including pipeline preparing, pipeline paving, pipeline connecting, pipeline checking and pipeline inspecting. An adopted pipeline connecting and sealing device comprises an installing plate, asupporting external member and a sealing external member. Sliding grooves A are evenly formed in the installing plate. The installing plate is provided with the supporting external member, and the sealing external member is arranged at the upper end of the supporting external member. The energy conveying pipeline connecting and paving construction method can solve the following problems that a, during existing pipeline connecting work, pipelines are not aligned commonly due to the uneven pipeline height, and consequently, the phenomenon of pipeline water leakage is caused; and b, during existing pipeline installing, at sealing connection positions for pipelines, only one position commonly exists for pipeline sealing, consequently, due to the pipeline gravity, after a long time, the phenomenon of pipeline connecting port staggering happens, and the phenomenon of water leakage is caused, wherein the problems exist during existing pipeline connecting work.

An optical system for projection display is composed of a light source, a lighting module for receiving the light from light source and outputting the linearly polarized white light, a color selecting module for receiving said white light and outputting three color light beam with respective polarities, a prism assemblage, a projecting lens, and three reflection-type light valves for said three color beams.

The invention discloses a stone curtain wall crossbeam-free suspension system. The system is characterized in that the system comprises a hanging seat which is detachably connected to a vertical mainkeel, the hanging seat comprises a vertical swing plate, a hanging part is anchored by a stone panel through a back bolt, and the hanging part is suspended on the swing plate. The stone curtain wall crossbeam-free suspension system has advantages that 1, due to freeness of curtain wall transverse sub-keels, transverse sub-keel discharging operation is avoided, and accordingly processing period isshortened; 2, by taking full advantages of curtain wall panel vertical plates, curtain wall main material consumption is reduced, and material cost is reduced; 3, transverse sub-keel mounting in onsite construction procedures is avoided, so that a construction period is shortened; 4, easiness in standard, modularized and industrial processing and production is achieved; 5, fine adjustment in horizontal and vertical directions through bolts can be realized, and convenience in operation is achieved.

The invention discloses a filling type shear wall welded in a staggered mode. The filling type shear wall is of a structure with a plurality of cavities. Concrete is poured into the cavities. The cavities are formed by sequentially splicing a plurality of Z-shaped steel profiles in the same direction. Each Z-shaped steel profile comprises an upper flange, a web and a lower flange. The web and the lower flange of the previous Z-shaped steel profile and the upper flange and the web of the next Z-shaped steel profile jointly form one cavity in an enclosed mode. The Z-shaped steel profiles at the foremost end and the rearmost end are connected with L-shaped steel profiles or linear steel plates so that the cavities can be formed in an enclosed mode. According to the filling type shear wall welded in the staggered mode, a steel structure and a concrete structure are effectively combined together, and the advantages that steel is light in weight and high in strength, and the concrete is large in rigidity are well exerted; the shear wall can be produced by adopting an industrialized production line; assembly type construction is conducted on the site; and the requirements for environment-friendly construction and standard construction are met.

The invention relates to a combined narrow-edge framework device. The combined narrow-edge framework device comprises a main framework, an external decoration rack and a plurality of elastic components, wherein the main framework is a rectangular framework mainly comprising two transverse frame rods and two longitudinal frame rods which are combined with four L-shaped angle connectors and a plurality of screws, the external decoration rack comprises two transverse decoration rods and two longitudinal decoration rods and is fixed at an outer side of the main framework by a plurality of screws,the main framework is used for supporting a projection screen, tension forces are provided for a surrounding edge of the projection screen by a plurality of elastic components hidden between the mainframework and the external decoration frame, so that the projection screen is smoothly expanded. In the combined narrow-edge framework device, the composite structure formed by combining the main framework and the external decoration framework has favorable mechanical strength, the width of the framework can be appropriately reduced to show a narrow-frame shape, and the problems that the projection screen framework device with a rough and wide framework is excessively large in wide, is heavy and is poor in attractiveness are solved.

The invention discloses a zoom projection lens, which is used to make an original image which is at image source side project on an image side to form a projective image, a projective system of the zoom projection lens sequentially comprises a first lens group with negative diopter, a second lens group with positive diopter, a third lens group with positive diopter and a fourth lens group with negative diopter and a fifth lens group with positive diopter from the imaging side. When the zoom projection lens changes from the amplifying end to the shrinking end, the first lens group and the fifthlens group are firmly fixed, and the second lens group, the third lens group and the fourth lens group all move towards the imaging side; the zoom projection lens can meet special condition so as toimprove the projection quality. The zoom projection lens also comprises an automatic light ring which can move along with the fourth lens group together.

The invention discloses an intelligent office control system based on the Internet of Things. The intelligent office control system comprises a cloud platform, an edge computing server layer, an edgecontrol layer and a basic scene layer. The cloud platform and the edge computing server layer communicate with each other to realize data interaction and whole-process tracing; the edge computing server layer and the edge control layer communicate with each other to obtain various equipment data of the edge control layer, process and analyze the equipment data, and send out a control signal for equipment in the basic scene layer; the edge control layer and the basic scene layer communicate with each other to obtain data of equipment in a basic scene, so that the equipment in the basic scene iscontrolled; and the basic scene layer comprises a control module of each area in the office environment. According to the intelligent office control system based on the Internet of Things, general equipment control on the edge side is achieved based on the Internet of Things, real-time control and remote control over the office environment and equipment can be achieved, expandability is high, andremote control is convenient.

The invention discloses a projection lighting device and projection equipment. The projection lighting device comprises a plurality of light source devices, a light combining device, a polarized lightconversion device, a light beam control device, a reflection imaging device and a projection device, wherein the light combining device is used for combining light beams emitted by a plurality of light source devices to obtain a main light beam, the polarized light conversion device is used for converting the main light beam into a polarized light beam, the light beam control device is used for transmitting the polarized light beam to the reflection imaging device, the reflection imaging device reflects the polarized light beam to obtain a reflected light beam with the image information, andthe light beam control device is further used for transmitting the reflected light beams to the projection device for corresponding projection. The projection lighting device is advantaged in that thepolarized light conversion device is arranged in the projection lighting device, and the main light beam emitted by the light source device is converted into the polarized light beam, so the reflection imaging device can perform reflection imaging by utilizing all the polarized light beams, and the light energy utilization rate of the projection lighting device can be greatly improved.

The present invention discloses zooming projection lens capable of installing in projection display device. Zooming projector lens includes first lens assembly having negative dioptre and second lens assembly having positive dioptre, wherein first lens assembly consisting of plurality of lens near by image surface and capable of moving along optical axis, second lens assembly consisting of plurality of lens near by object plane and capable of moving along optical axis, one aperture stop set between two adjacent lens of second lens assembly, said aperture stop capable of moving along with second lens assembly, said zooming projector lens capable of correcting aberration, thereby raising projection quality.

The invention provides a unit-type vertical guardrail system. The unit-type vertical guardrail system comprises a plurality of frames fixed to a terrace, wherein a plurality of guardrail plates are fixedly supported in each frame, and the frames and the guardrail plates are fixed to the terrace through combination supporting pieces; the combination supporting pieces comprise unit stand columns connecting the guardrail plates and the terrace, upper hanging bases supporting the guardrail plates and lower hanging bases supporting the guardrail plates; and the unit stand columns are provided withhanging piece supporting the upper hanging bases or / and the lower hanging bases in a combination mode. According to the unit-type vertical guardrail system, a novel and environmental-friendly fabricated system with convenient installation and implementation and outstanding economic benefits is provided.

A light modulation module comprises a liquid crystal silicon-coated display panel and a temperature adjusting module. The liquid crystal silicon-coated display panel is arranged on a transmission path of the illumination light beam and is used for modulating the illumination light beam. The liquid crystal silicon-coated display panel is arranged in the temperature adjusting module. The temperature adjusting module comprises a temperature sensing element and a temperature control element. The temperature sensing element is arranged beside the liquid crystal silicon-coated display panel and used for sensing the temperature of the environment where the liquid crystal silicon-coated display panel is located. The temperature control element is arranged beside the liquid crystal silicon-coated display panel and is coupled with the temperature sensing element. The temperature control element controls the temperature of the liquid crystal silicon-coated display panel according to the ambient temperature. In addition, a reflective projection device is also provided. The reflective projection device using the light modulation module has good reliability and good projection quality.

A construction method for preventing airport pavement from producing crack and crushed stone from shedding is characterized by that it uses asphalt and aggregate, and mixes them into asphalt concrete and makes it into precast strip; and its construction method includes the following steps: repairing crack, melting and infiltrating solvent into recess to form connecting surface, closing crack and sticking rubberized tape to cover crack, filling precast strip, and compacting, and making the precast strip and connecting surface into one integral whole, filling expansion joint with gap-filling adhesive, melting, infiltrating and closing the crack, preventing production of water-penetrating gap, renovating surface layer of airport pavement, welding covered crack and expansion joint so as to effecively prevent airport pavement from producing crack and crushed stone from shedding.

The invention discloses a projection device. The device comprises a shell, a light source module, a light valve, a projection lens and a temperature control element. The light source module is arranged in the shell and is suitable for providing an illumination light beam. The light valve is arranged on the transmission path of the illumination light beam and used for converting the illumination light beam into an image light beam. The projection lens is disposed on a transmission path of the image beam. The projection lens comprises a lens barrel, and the lens barrel is provided with a curvedsurface. The temperature control element is arranged on the projection lens and is suitable for cooling or heating the projection lens. The temperature control element has a temperature control surface. The shape of the temperature control surface fits the curved surface of the lens barrel, and the temperature control surface is used for being connected to the curved surface of the lens barrel. The invention further provides a temperature regulation and control method of the projection device. According to the projection device and the temperature regulation and control method thereof providedby the invention, the projection lens can be effectively cooled or heated, so that the projection quality of the projection device is improved.

The invention provides a tunneling machine and a construction method thereof. The tunneling machine comprises a tunneling machine body, a traction pulling point is arranged on the tunneling machine body and connected with a traction rope, the traction rope penetrates through a to-be-tunneled area, and the traction rope is connected with traction equipment at a receiving end. The construction method comprises the following steps that the positions, corresponding to a starting end and the receiving end, of the traction pulling point are measured and positioned; the traction rope is sent from thereceiving end to the starting end; the traction rope is connected with the traction pulling point and the traction equipment; and the traction rope performs traction and deviation rectifying on the tunneling machine body. The tunneling machine and the construction method thereof have the advantages that the jacking distance of the tunneling machine is increased, the number of relay wells is decreased, and investment is saved; the jacking control difficulty of the tunneling machine is reduced, more devices and methods are provided for deviation rectifying of the tunneling machine, constructionprecision is improved, and the engineering quality is improved; and the foundation of the construction precision of the tunneling machine is improved, the assembly precision between unit pipe jointsof a 'CC' construction method is improved, and the joint quality and the waterproof effect of the pipe joints are improved.

The invention discloses a living room AI projection lamp. The living room AI projection lamp comprises a projection lamp body and an installation mechanism used for installing the projection lamp body. A PLC, a picture processing module, a signal processing module, a signal receiving module, a voice processing module, a voice receiving module, a timing module, a projection picture scanning module,a comparison module and a downloading module are arranged in the projection lamp body; the voice receiving module is connected to the signal receiving module through the voice processing module; thesignal processing module and the picture processing module are connected to the PLC; the PLC is connected to the downloading module, an electric telescopic rod and the projection picture scanning module. Through a mounting mechanism, the whole projection lamp is convenient to fix, the projection lamp body can be completely stored in a storage box, and a very good protection effect is achieved; storage and projection of the projection lamp body can be controlled through voice or a mobile client, multiple use ways are achieved, and operation is convenient.