CN202135266U - Full angle naked eye space imaging system based on four DLP projections - Google Patents

Abstract

The utility model relates to a full angle naked eye space imaging system based on four DLP projections, comprising a frame, projection screens, DLP projectors and a computer, wherein two projection screens form a double-faced projection imaging carrier vertically arranged on a rotary table, a strong magnet is arranged on the rotary table, a Hall device is fixed near an operation track of the strong magnet, the four DLP projectors are uniformly fixed along the periphery of the frame, distances between each DLP projector and the center of the double-faced projection imaging carrier are same, the Hall device is directly connected with the computer, and the four DLP projectors are connected with the computer via a video shunt. The system is easy to realize, reliable in operation and high in instantaneity and stability.

Description

Based on the naked visual space of the full-shape of four DLP projections imaging system

Technical field

The utility model relates to a kind of naked visual space of full-shape imaging system based on four DLP (Digital Light Projector, digital light projection machine) projection, belongs to the three-dimensional image display technology field.

Background technology

The objective world is the solid space that has three-dimensional dimension.Since display device was born, in order to reproduce the objective world truly, people never were interrupted the research for stereo display technique.So-called stereo display is meant the ability display image degree of depth (third dimension) effect, just as we see real world, is three-dimensional.Stereo display technique can be divided into bore hole stereo display technique and non-bore hole stereo display technique by the angle of whether adding anaglyph spectacles.

Present nakedly look stereo display technique comprises mainly that hologram three-dimensional shows, free stereo shows and three kinds of body Display Techniques.Hologram three-dimensional shows manages the light wave of the getable object of reconstruct eyes, even if make object also can not see the reflection true to nature of this object in the original place, the greatest problem that exists at present is that the 3 d light fields information playback is comparatively complicated, inconvenient large-area applications.Free stereo shows that materials such as using post lens, lenticule resolves into several two dimensional image that are mutually related (but also the energy is exactly several) with an original width of cloth 3-D view, forms stereoscopic vision through binocular parallax.The defective of this method is the contradiction between vision area and the resolution, and resolution is big, and vision area is just wide, but resolution can not promote significantly at present, and this has just limited the expansion of vision area range, ophthalmic uncomfortable when causing observing.For several film sources, certainly will bring the complexity of system configuration, and be difficult to realize vertical parallax.The third is the body Display Technique, encourages the medium that shows in the body to produce visible radiation organizator pixel through suitable mode, and these are dispersed in three-dimensional volumetric pixel and have constituted stereo-picture.The image of body three-dimensional display is present in the true three-dimension space; Show that one meets the sense of reality that people observe world's scene near the stereoscopic picture plane of real-world object, satisfies all physiology and psychological depth cueing; Can allow many people, multi-angle, bore hole to watch scene simultaneously; Need not any auxiliary eyeglasses,, more approach the target of ultimate demonstration than other the two kinds naked stereo display techniques of looking.

Although the body Display Technique can by modeling with reappear three-dimensional body, most at present three-dimensional scenic is still with the two-dimensional scan display mode and appears, this can effectively reduce the difficulty of solid object reconstruct.At home, the research work that a large amount of body 3-D scannings show has been done by units such as East China Normal University and Zhejiang University, and has developed the rotary body scanning three-dimensional display based on LED (Light Emitting Diode, light-emitting diode) array.Though above-mentioned these schemes have all realized the body three-dimensional display, adopting led array based on the real three-dimensional display system of two-dimentional LED rotary screen is display unit, and its physical resolution receives the influence of LED size, and ultimate resolution only 128 * 64 at present; Because the weight of parts such as led array, control circuit, power supply is bigger, high-speed rotating conditions in the time of can't satisfying high volume applications is owing to adopt single array of display mode, film flicker when low speed rotation; Led module has big thickness, has formed body space vision blind area, causes commercial shortcoming such as be difficult to popularize.

Summary of the invention

The problem and shortage that exists of prior art in view of the above, the purpose of the utility model provides the naked visual space of a kind of full-shape based on four DLP projections imaging system.Four projection modules of this system configuration are realized the passive picture parts that change into, and have improved display space resolution, increase the display space volume, reduce half motor speed and noise of motor, eliminate the vision blind area, prolong lifetime of system.

The utility model adopts following technical scheme to realize:

A kind of naked visual space of full-shape imaging system based on four DLP (Digital Light Projector, digital light projection) comprises frame, projection screen, DLP projector and computer, it is characterized in that:

A. two said projection screens are mounted on back-to-back and constitute the biplane projection imaging support on the sheet metal, and this double-face imaging carrier vertically is fixedly mounted on the turntable, and is positioned on the rotation centerline of turntable;

B. strong magnet of fixed installation on the said turntable edge, hall device of fixed installation makes hall device near the strong magnet running orbit on said frame;

C. circumferentially be uniformly distributed with four said DLP projectors of fixed installation on the said frame, the center that makes four DLP projectors and said biplane projection imaging support and equates with this centre distance on same horizontal plane;

D. said hall device directly connects said computer, and said four DLP projectors connect said computer through a video splitter.

Above-mentioned two projection screens all adopt about 0.9 times of gain, effective scattering visual angle greater than the soft curtain of the just throwing of 160 degree, are close to back-to-back for two acts to be installed on the sheet metal, and its area is greater than 30cm * 24cm;

Connect turntable and drive turntable by a motor with per second 8 to 10 circle high speed rotating.

Above-mentioned DLP projector resolution greater than 320 * 240, projection brightness greater than 6LUX, contrast greater than 400:1;

Above-mentioned video splitter is by CycloneII2C35 processor, USB (Universal Serial Bus; USB) interface chip ISP1362, VGA (Video Graphics Array; Demonstration drawing array) modules such as interface chip ADV7123 and power management are formed; Computer communicates through USB interface and video splitter, looks screen splitter exploded view picture and passes through VGA video transmission interface to four DLP projector images, and computer sends synchronous shows signal according to the signal of hall device to the video splitter; The video splitter is after receiving synchronizing signal, and is parallel immediately to four DLP projector synchronous transmission stereopsis;

The utility model adopts the method for rotation passive component; Following rotation with active display device compares; Rotary unit weight saving; There is source module not influenced by rotation stress; System safety is reliable; Can obtain to form images greater than the demonstration body space of

30cm

30 cm

24cm, the vertical naked full-shape of looking of space display resolution and level 360 degree near 360 degree greater than 320 * 240 * 360; Help commercial application, for the displaying field provides new medium approach.

Easy, reliable, real-time and stable high that the utility model is realized.

Description of drawings

Fig. 1 is based on the structural representation of the naked visual space of the full-shape of four DLP projections imaging system

Fig. 2 is based on the structured flowchart of the video splitter of CycloneII2C35.

Embodiment

A preferred embodiment of the utility model combines detailed description of the drawings following: referring to Fig. 1; This is based on the naked visual space of the full-shape of four DLP projections imaging system; Comprise frame (12), projection screen (2), DLP projector (4) and computer (8); Have two said projection screens (2) to be mounted on a sheet metal (1) back-to-back and go up formation biplane projection imaging support, this double-face imaging carrier vertically is fixedly mounted on the turntable (5), and is positioned on the rotation centerline of turntable (7); A fixed installation strong magnet (10) on said turntable (5) edge is gone up a fixed installation hall device (9) in said frame (12), makes hall device (9) near the strong magnet running orbit; Circumferentially be uniformly distributed with fixed installation four said DLP projectors (4) on the said frame (12), the center that makes four DLP projectors (4) and said biplane projection imaging support and equates with this centre distance on same horizontal plane; Said hall device (9) directly connects said computer (8), and said four DLP projectors (4) connect said computer (8) through a video splitter (6).Said projection screen (2) adopts that gain is 0.9 times, effectively the scattering visual angle is greater than the soft curtain of the just throwing of 160 degree.Connect driving turntable (5) with per second 8 to 10 circle high speed rotating by a motor (3).Every DLP projector (4) links to each other with video splitter (6) through VGA (showing the drawing array) video transmission interface, and video splitter (6) links to each other with computer (8) through USB (USB) interface.Referring to Fig. 2, modules such as video splitter (6) CycloneII2C35 processor, USB interface chip I SP1362, VGA interface chip ADV7123 and power management are formed.Computer (8) sends synchronous shows signal according to the signal of hall device (9) to video splitter (6), and video splitter (6) is after receiving synchronizing signal, and is parallel immediately to four DLP projectors (4) synchronous transmission main body image.

Claims (3)

1. the naked visual space of the full-shape imaging system based on four DLP (Digital Light Projector, digital light projection) comprises frame (12), projection screen (2), DLP projector (4) and computer (8), it is characterized in that:

A. two said projection screens (2) are mounted on a sheet metal (1) back-to-back and go up formation biplane projection imaging support, and this double-face imaging carrier vertically is fixedly mounted on the turntable (5), and is positioned on the rotation centerline of turntable (7);

B. a fixed installation strong magnet (10) on said turntable (5) edge is gone up a fixed installation hall device (9) in said frame (12), makes hall device (9) near the strong magnet running orbit;

C. circumferentially be uniformly distributed with fixed installation four said DLP projectors (4) on the said frame (12), the center that makes four (4) d. of DLP projector and said biplane projection imaging support and equates with this centre distance on same horizontal plane;

Said hall device (9) directly connects said computer (8), and said four DLP projectors (4) connect said computer (8) through a video splitter (6).

2. the naked visual space of the full-shape based on four DLP projections according to claim 1 imaging system is characterized in that said projection screen (2) adopts that gain is 0.9 times, effectively the scattering visual angle is greater than the soft curtain of the just throwing of 160 degree.

3. the naked visual space of the full-shape based on four DLP projections according to claim 1 imaging system is characterized in that connecting driving turntable (5) with per second 8 to 10 circle high speed rotating by a motor (3).

Images