54results about How to "Guaranteed projection effect" patented technology

The embodiment of the invention discloses a system, a method and a device for screen projection. The system comprises a display screen and at least two groups of projectors, wherein the display screen is of a fully-sealed or partially-sealed casing structure; the inner wall of the casing structure is used for providing continuous images with viewing angles of 180 to 360 degrees in the horizontal direction; each group of projectors comprises at least one projector; the two groups of projectors are distributed in the center axis direction of the display screen by layers; each group of projectors is respectively projected onto one part of the inner wall of the display screen, the light paths of the two groups of projectors are kept away from audiences and seats, and the center axis is an axis which passes through a center point of the display screen, so that the display screen is arranged in a left and right symmetric way about the axis; each group of projectors is used for projecting transversely divided auxiliary display images of the to-be-displayed image according to the different projecting areas, and the auxiliary display images are spliced to form the complete to-be-displayed image. The system has the advantage that the projection light paths are not shielded by the audiences, so that the system can be applied to multiple types of screens.

The invention discloses a vehicle-mounted projection system, and belongs to the technical field of vehicles. The system comprises a transmission module, a processing module and a laser display device, wherein the transmission module is used for receiving navigation data; the processing module is used for processing the navigation data to obtain a navigation picture; the laser display device is used for projecting the navigation picture to an appointed position at a front roadway of the vehicle. The navigation picture of the vehicle is projected to the front roadway of the vehicle in a laser display mode, the visibility is improved, and the projection effect is guaranteed.

The invention discloses an intelligent projection system for visual communication, wherein the intelligent projection system comprises a projector and a supporting plate; one end of the projector is in threaded connection with a lens cone, a notch is formed in the top end of the supporting plate, and a position adjusting and gravity center balancing mechanism is arranged in the notch; and the position adjusting and gravity center balancing mechanism comprises a concave plate, a limiting rod, a lead screw, a rotary knob, a placing plate, a sliding plate, a groove, a movable plate, a transmission gear, a tooth bulge, a mounting plate, a rack and a counterweight plate. The structure is scientific and reasonable, and the use is safe and convenient; a position and gravity center adjusting mechanism is arranged, the lead screw is driven to rotate through the rotary knob, and the concave plate is pushed to move; and the concave plate is limited by the limiting rod, so that the concave plate slides in the notch, transverse fine adjustment is carried out on a projection picture, and the convenience of the device is improved; in addition, in the transverse fine adjustment process, the concave plate drives the sliding plate to move together, and meanwhile power is transmitted through cooperation of the transmission gear, the tooth bulge and the rack.

The invention discloses an LED (light emitting diode) display screen, which comprises a first LED box body, a second LED box body, an LED display module and fastening elements, wherein more than two first grooves are formed in the end surface of the first LED box body; two first positioning bulges are arranged in each first groove; more than two second grooves are formed in the end surface of the second LED box body; two second positioning bulges are arranged in each second groove; the two first positioning bulges are respectively inserted into the corresponding second groove and are positioned between the two second corresponding positioning bulges; the two second positioning bulges are respectively inserted into the corresponding first groove; positioning holes are respectively formed in each first positioning bulge and each second positioning bulge; the distance from the center of each positioning hole to the corresponding pixel point on the LED display module is a half of a point distance of the LED display screen; the fastening elements are respectively and sequentially inserted into the positioning holes of the first positioning bulges and the second positioning bulges. The LED display screen has the beneficial effects that the splicing flatness is high; the showing effect is good; the processing is simple; the splicing is convenient.

The invention discloses an adjustable projection device for a smart classroom, and relates to the technical field of projection equipment. The adjustable projection device comprises a fixed pipe; a top plate is fixed below the fixed pipe; first side plates are fixed to the lower surface of the top plate side by side; the fixed pipe is rotationally connected with an adjusting shaft sleeve; an adjusting pipe is in clearance fit in the fixed pipe; a threaded channel is formed in the inner wall of the adjusting shaft sleeve; an adjusting column matched with the threaded channel is fixed to the side wall of an adjusting pipe; second side plates are fixed to the lower end of the adjusting pipe through connecting plates; a bottom plate is fixed on the two second side plates; and the top plate andthe two first side plates are matched with the bottom plate and the two second side plates to form a closed box structure. According to the adjustable projection device, the vertical position of theadjusting pipe is adjusted through rotation of the adjusting shaft sleeve, and the problem that the height of an existing projector is inconvenient to adjust is solved. The top plate and the two firstside plates are matched with the bottom plate and the two second side plates to form the closed box body, so that the problems that the existing projector is prone to happening dust accumulation, andthe projection effect and the service life are affected are solved.

This invention provides one projection machine with clear lens head protection cover, which comprises shell, light engine inside shell, circuit board, light source, and relative dissipation structure, wherein, the light engine projection lens stretches out of shell; the projection lens head is covered with flexible loading protection cover. This invention adopts clear lens protection cover kept on the lens head in work.

The invention discloses a light source color compensation method and a projector device using same. The light source color compensation method comprises the steps of measuring first color values of a first color of a light source under different brightness, determining a first deviation value according to a first target color value of the first color under different brightness and the first color values, and building a corresponding first table; turning on the light source, and measuring that the light source has first brightness; searching the first table, and determining the first deviation value corresponding to the first brightness; and adjusting the first color value according to the first deviation value till the adjusted first color value is equal to the corresponding first target color value. Through adoption of the method, the brightness of each color output finally is in accordance with target Gamma setting, so as to ensure the projection effect of the projector device.

The invention relates to the technical field of short-focus lenses, and in particular, relates to a short-focus lens system which comprises a shell and a lens group, the lens group is mounted in the shell, and the shell comprises a main mounting lens cone and a lens adjusting mechanism; the lens adjusting mechanism is connected and mounted on the main mounting lens cone and is used for driving one or more groups of lenses in the lens group to move on the central axis of the main mounting lens cone; and the lens group comprises a refraction lens group and an aspheric reflector which are sequentially arranged from the image incident side to the image emergent side along the central axis of the main installation lens cone. The influence of temperature change on lens deformation is considered in design and selection of surface type parameters of the spherical lens, it can be guaranteed that the short-focus lens system has good image distortion prevention performance in a high-temperature environment; in addition, a middle group adjusting part is arranged to drive the lenses in the lens group to move; therefore, the focal length under different projection pictures can be adjusted, and the definition under pictures of different sizes can be ensured.

The invention discloses an advertising lamp box capable of being automatically controlled to carry out projection based on human body detection. The lamp box comprises a lamp box body and further comprises a projection mechanism, an infrared sensor, a converter, a control circuit, a light source driving circuit, a projection lamp, a motor driving circuit and a stepping motor. The infrared sensor is used for detecting a human body to form an induction signal, the converter is used for converting the induction signal into a digital signal, the control circuit is used for analyzing and obtaining the angle value of the position, where the human body is located, relative to the lamp box body, and generating a motor driving signal and a light source driving signal which drive the stepping motor to rotate; the light source driving circuit drives the light source of the projection lamp to carry out light beam projection; the motor drives the circuit to control rotation of the stepping motor; the stepping motor enables a shell of the projection lamp to rotate to the corresponding angle through a connecting part, and a projection light beam falls at the position of the human body. According to the advertising lamp box, the dynamic advertising mode and the static advertising mode are combined, and the lamp box has the strong visual impact.

The invention supplies a three lens reflecting type liquid board projector that could automatically align pixel. The feature is that it has a control and adjusting structure that could automatically align pixel in the projector. The structure includes a long shaft, a support, a CCD, two step motors and at lest one control circuit. The input end of control circuit connects to electric coupling component to receive testing signal, and the output end of control circuit connects to step motor to control the actions. The invention could sharply improve convenience for user, and ensure projecting effect.

The invention relates to the technical field of projectors, and discloses a liquid crystal screen heat dissipation structure of a projection ray machine. The heat dissipation structure comprises a machine shell, a first lens, a liquid crystal screen and a second lens are sequentially arranged in the machine shell along a light path channel, a sealed cavity is formed in the space between the first lens and the second lens through the machine shell, and an opening is formed in the wall of the machine shell in the cavity. A semiconductor chilling plate is arranged at the opening and seals the opening, the refrigerating face of the semiconductor chilling plate faces the interior of the cavity, and the heating face of the semiconductor chilling plate faces the exterior of the machine shell. According to the projection light machine liquid crystal screen heat dissipation structure, the liquid crystal screen is contained in the sealed cavity, air in the cavity is refrigerated, and therefore heat dissipation of the liquid crystal screen is achieved, the heat dissipation efficiency of the liquid crystal screen is improved on the premise that the projection effect is guaranteed, and the service life of a projector is prolonged.

The invention discloses a multimedia teaching selection projector which comprises a movable projection screen part, a projection capture part, a projection part and the like. The movable projection screen part comprises a supporting rod fixed on a wall above black and white, the supporting rod is sleeved with a sliding sleeve, the sliding sleeve can transversely move on the supporting rod in the axial direction, a screen frame is arranged on the outer side of the projection screen, the screen frame is upwards fixed to the sliding block through a vertical connecting rod mechanism, and transverse movement can be achieved by horizontally pushing and pulling the screen frame; the vertical connecting rod mechanism is provided with a mechanism capable of achieving lifting adjustment and locking,and vertical movement can be achieved by vertically pushing and pulling the screen frame. The projection screen can be moved to any position on the blackboard at will, blackboard writing cannot be shielded, projection information and blackboard writing information can be combined, the optimal teaching effect is achieved, higher teaching application value can be achieved, more use convenience is brought to teachers, and particularly, the teaching field where image-text combination information amount is large and blackboard writing is needed is the field of teaching.

Disclosed is a reflection-type light-resistant projection screen. The reflection-type light-resistant projection screen is characterized by comprising a first functional layer and a second functionallayer, wherein a plurality of first micro structures are arranged in the first functional layer at intervals, and a first light transmitting part is arranged between the first micro structures; a plurality of second micro structures are arranged in the second functional layer at intervals, and the second micro structures are provided with reflecting surfaces used for reflecting light rays; a second light transmitting part is arranged between the second micro structures; and the first light transmitting part and the second light transmitting part are made of light-transmitting materials. The reflection-type light-resistant projection screen is internally provided with the first micro structures for absorbing light and the second micro structures for reflecting light, wherein the second micro structures are used for reflecting the projection light so as to realize parallel light, so that the projection light loss is reduced; the first micro structures are used for absorbing ambient lightand reducing the interference of ambient light. According to the projection screen, the display effect of the reflection-type light-resistant projection screen can be greatly improved, and the contrast ratio and the brightness of the reflection-type light-resistant projection screen are improved.

The invention relates to the field of slide control technology, in particular to a slide demonstration control device. The device comprises a camera, a laser pen, an adjustable support, a control module, an infrared projector, an input module, a storage module and a pair of demonstration glasses, wherein the camera is a focus-adjustable camera, the laser pen can emit lasers flickering at different frequencies, functional keys are arranged on the laser pen, different functional keys correspond to different flickering frequencies, the functional keys include an angle correction key and a scale correction key, and the adjustable support is also included and provided with a first stepping motor used for adjusting the pitch angle of the camera and a second stepping motor used for adjusting the yaw angle of the camera. Through the slide demonstration control device, the problem that laser point detection is not accurate due to installation position deviation of the camera can be solved, and meanwhile a user can be helped to perform demonstration smoothly.

The invention discloses a flattening device for projection screen, which comprises a hollow counter weight pull rod, an opening is arranged on the counter weight pull rod, a supporting latch segment is respectively arranged on the left end and the right end of the projection screen bottom edge, a plurality of supporting locating sheets are sequentially arranged from left to right on the projection screen bottom edge arranged between the two supporting latch segments, the upper surface of the supporting locating sheets and the upper surface of the supporting latch segment are located on the same plane to from commonly a supporting platform used for hanging and placing the counter weight pull rod, the counter weight pull rod is sequentially sleeved into all the supporting latch segment and the supporting locating sheets through the opening along the projection screen and the counter weight pull rod enables the opening edge to press down the supporting platform to hang and place on the supporting platform under the action of own gravity, plugs are respectively arranged on the left end and the right end of the counter weight pull rod, each plug is respectively locked and fixed on the ipsilateral supporting latch segment. The invention has the advantage of good flaring out effect on the projection screen.

The invention discloses a women shoe advertisement projecting device convenient to use. The device comprises a base, a supporting plate and a conical cover. Castors with brakes and a jack are arranged on the lower surface of the base. An anti-stealing chain is connected with the base. A second groove and a third groove are formed in the upper surface of the supporting plate. N cushion blocks are arranged inside the second groove. A projector is installed on the supporting plate. A lens of the projector is sleeved with the conical cover. An insect killing lamp is fixedly arranged on the outer surface of the conical cover. The lower end of a first support is connected with the supporting plate. The upper end of the first support is connected with a rain baffle. A solar cell panel, a wind power electricity generator and a storage battery are fixedly arranged on a supporting column. M climbing holes are uniformly formed in the side face of the supporting column in the vertical direction. Climbing structures are arranged at the positions of the climbing holes, and the projecting device has the technical effects of being reasonable in design, convenient to move, high in safety, not likely to be stopped by sundries by light of a projector, and good in rainproof effect.

The invention discloses a toy bowling machine. The toy bowling machine comprises an image curtain, a bowling alley, a ball falling mechanism a curtain complex mechanism. The toy bowling machine is skillful and reasonable in structural design. The image curtain is directly arranged on the bowling alley and only displays the conditions of a pin deck and pins, thereby, on the basis of ensuring the original length of the bowling alley, achieving perfect combination between projected images on the image curtain and the real bowling alley, achieving high simulative degree, avoiding vision disparity, enabling a player to clearly obtain the traveling track of a bowling ball, to make clear the optimal hitting areas and further to improve the hitting stability and precision, and particularly, effectively and rapidly improving the playing skills of beginners. Meanwhile, the bowling ball can directly collide against the image curtain, so that the simulative degree can be further improved, and direct and real hitting feeling can be provided for the player, high enjoyment and entertainment can be obtained, and wide promotion and application can be facilitated.

The invention discloses a 3D holographic imaging device, which comprises a first projection assembly, a second projection assembly, a third projection assembly and a fourth projection assembly, wherein the first projection assembly, the second projection assembly, the third projection assembly and the fourth projection assembly are telescopically connected in sequence. When the projection surfaceof the first projection assembly, the projection surface of the second projection assembly, the projection surface of the third projection assembly and the projection surface of the fourth projectionassembly are unfolded, the first projection assembly, the second projection assembly, the third projection assembly and the fourth projection assembly form a tetrahedron which is communicated up and down. The 3D holographic image scene is convenient to assemble and store, and the portability is high.

The invention provides a remotely-and-wirelessly-controllable projector based on the 5G communication technology and relates to the technical field of electronic equipment. When an existing remotely-and-wirelessly-controllable projector is used, due to the fact that a lens is exposed in air for a long time, the lens is prone to being polluted by dust and impurities in the air, and meanwhile the lens is not convenient to disassemble and clean, as a result, a projection effect is affected; the projector is complex in structure ,and much trouble is brought to operators. The invention just aims to solve the above problems. The projector of the invention comprises a projector body; the projector body is arranged below a mounting cover plate, and the projector body is rotationally connected with the mounting cover plate through a connecting ring. According to the remotely-and-wirelessly-controllable projector based on the 5G communication technology of the invention, by rotating a rotating rod and utilizing the transmission of a transmission gear and a rack, two pull rods slide towards two sides along a limiting block through a second sliding groove, so that a clamping block is separated from an annular groove of a rotating seat, and the projector body and the mounting cover plate can be quickly mounted and dismounted, and therefore, the replacement or maintenance of the projector body in the later period can be facilitated.

The invention provides a control method and electronic equipment. The method is applied to the electronic equipment. The electronic equipment comprises a projection unit. The method comprises the following steps of determining a first included angle between the electronic equipment and a reference surface; at least determining the regulation direction and the angle value to be regulated of the optical axis of the projection unit according to the first included angle; and regulating the projection unit according to the determined angle value and the regulation direction, so that an included angle between the optical axis and the reference surface is a second included angle. The method has the advantages that the use is convenient; and a good projection effect can be ensured.

The invention relates to a mini projection device, and discloses a mini projection device. In the mini projection device, one side of a mini projection structural body is connected with a screen combined body; when the mini projection device is used, the mini projection device can slide, a screen body can rotate to be vertically erected from the screen combined body first and then be expanded. Therefore, the screen on which the images are projected can be integrated on the mini projector in a portable mode, so that the stable projection can be realized under various environments so long as a user carries the mini projector.