CN203941346U

CN203941346U - A 3D display system

Info

Publication number: CN203941346U
Application number: CN201420204188.7U
Authority: CN
Inventors: 谷昕炜; 其他发明人请求不公开姓名
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-24
Filing date: 2014-04-24
Publication date: 2014-11-12
Anticipated expiration: 2024-04-24

Abstract

The utility model discloses a 3D display system, which comprises a first display, a second display, a half mirror and polarized 3D glasses; the backlight sources of the first display and the second display are LED or CCFL light sources, and the first display panel and the second display panel are TN type panels; the first display and the second display are arranged on the same plane in an included angle a, wherein a is more than or equal to 70 degrees and less than or equal to 110 degrees; the half mirror is placed on an angular bisector of the included angle, and the polarized 3D glasses are placed behind the half mirror and located right in front of the first display or the second display. The system can watch fine images in a close range. Because the images output by the two displays have no loss of pixel points and are continuous images, the picture is clear and fine. The utility model discloses a 3D display system can directly adopt current conventional equipment to realize, when reaching the viewing effect good, need not to increase and watches the cost.

Description

A kind of 3D display system

Technical field

The utility model relates to 3D and shows field, more specifically, relates to a kind of 3D display system.

Background technology

Nowadays, 3D technology has been widely used in Ge Hang all circles.In life, people can experience by variety of way the effect of 3D technology.Implementation is also varied.There is polarized light 3D, have 120Hz active shutter 3D etc.The current applied technology of 3D film, use exactly two camera lenses according to the position of sound production of human eye, the double vision dot image of photographed, by two projectors, two image synchronization are shown again, before projector and human eye, all add corresponding polaroid, utilize polarization extinction technology to make left eye receive only the image of left machine, right eye receives only right machine image, form parallax, thereby reach 3D effect.

What cinema used now is that projection simultaneously goes out on polarized light to screen that both direction is vertical, and spectators wear glasses and see.As large scene, this is current best technology, and effect is true to nature, and due to distance, very clear concerning human eye; Yet the equipment of cinema can not used at home.Then be the active shutter 3D of nVIDIA, show respectively the image of right and left eyes by computer monitor 120Hz, the eyes that people puts on synchro switch right and left eyes reach 3D effect.This has been the now the most portable a kind of scheme of family expenses, but there is obvious shortcoming in it, the one, the display screen output of computer has delay, so do not accomplish to switch for every 1/120 second a picture, cause the synchronous effect of eyes also to give a discount, ceaselessly dodge concerning eyes in addition also bad at the moment.

What have that the 3D TV of present main flow uses is a kind of interleaved technology again.The every a line pixel output that is exactly him is the light of same polarization direction, next line output be polarization direction vertical light with it, then next line polarization direction has gone back to again.This technology can not glimmered at last, but the image that left eye and right eye receive longitudinally pixel subtract and be a half, image is also just unintelligible.But as TV, outside certain distance, (as 3 meters) are watched, and just there is no much relations.The cost that but such screen is manufactured is very high, and precision is difficult to ensure card.Having has been exactly some low-quality 3D technology again, and for example red blue 3D selects to enter the light of right and left eyes by two kinds of optical filters, and color has become completely.

Utility model content

The deficiency existing in order to overcome existing 3D technology, the utility model proposes a kind of 3D display system that is applicable to the small-sized places such as family.This system can produce fine and smooth 3D display effect, and cost is low.

To achieve these goals, the technical solution of the utility model is:

A 3D display system, comprises the first display, second display, half-reflecting mirror and polarization 3D glasses; The polarized light that wherein the first display and second display are launched is equidirectional, the backlight of the first display and second display is LED light source or CCFL (cold cathode fluorescent lamp pipe) light source, and the panel of the first display and second display is TN profile plate (twisted nematic panel);

Only otherwise affect visual angle, the first display and second display are the placement of a angle at grade, 70 °≤a≤110 °; Half-reflecting mirror is placed on the angular bisector of angle, and polarization 3D glasses are placed on after half-reflecting mirror, and are positioned at the dead ahead of the first display or second display.

The display of existing employing TN profile plate is all 45 ° of strict polarized lights, and polarization light purity is very high.Through test, the effect of seeing screen when analyzer is vertical with polarization direction is almost entirely black.So do not need again at the additional linear polarization film of display, out be exactly ready-made linearly polarized light, and polarization direction is all highly consistent.Have so a very large benefit, the light that is exactly a display is therein that mirror image changes through the polarization direction after reflection.Observer puts on polarization 3D glasses, sees one of them display after half-reflecting mirror; At this moment the virtual image of another display just in time this display observed with user overlaps.Allow the image of two display simultaneous display left eyes and right eye, left eye and the right eye of the polaroid relief observer by polarization 3D glasses receive image separately; User has just observed the 3D rendering that has parallax like this.

Preferably, the angle that described the first display and second display form is 90 °.

Preferably, the transmitted intensity T of described half-reflecting mirror and the ratio of intensity of reflected light R are 5:5, i.e. T/R=5:5.The thickness of half-reflecting mirror guarantee TR than in the situation that Bao Yuehao more, the impact that can avoid like this former and later two face return ghosts of half-reflecting mirror to bring.

Preferably, described half-reflecting mirror is flint glass.

If export respectively the first display and second display to two main frames, be difficult to reach the synchronous output of image, in order to make 3D effect better, preferably can guarantee the image synchronization of output valve the first display and second display, the first display and second display are by a host computer control.

In described polarization 3D glasses, the polarization direction of an eyeglass is 45 °, and the polarization direction of another eyeglass is 135 °.Be at least left side eyeglass be polarization direction that the polarization direction of 45 ° or the right eyeglass are 45 ° be do not have influential because the output of main frame can change setting according to glasses left and right.

Compared with prior art, the beneficial effects of the utility model are: 3D display system of the present utility model can closely be watched careful image.Because the image of two display outputs had not both lost pixel, was continuous image yet, picture is clear careful.3D display system of the present utility model can directly adopt the equipment of existing routine to realize, reach viewing effect good in, without increase, watch cost.

Accompanying drawing explanation

Fig. 1 is light path schematic diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described, but embodiment of the present utility model is not limited to this.

As Fig. 1, a kind of 3D display system, comprises LED the first display, LED second display, half-reflecting mirror and polarization 3D glasses; The polarized light that wherein LED the first display and LED second display are launched is equidirectional, the backlight of LED the first display and LED second display is LED light source, and the panel of LED the first display and LED second display is TN profile plate (twisted nematic panel); In the present embodiment, the first display and second display are to adopt two notebook computers.

The first display and second display are 90 ° of angles and place at grade; Half-reflecting mirror is placed on the angular bisector of angle, and polarization 3D glasses are placed on after half-reflecting mirror, and are positioned at the dead ahead of the first display.

What launch due to LED the first display, 2 is equidirectional polarized light, and the light that second display sends is after middle half-reflecting mirror, and polarization direction changes 90 ° just, vertical with the light polarization direction that the first display sends.Two displays show respectively the image of left eye and right eye needs.Like this, observer, by wearing the polarization 3D glasses of corresponding polarization direction, makes left eye only accept second display through the light of half-reflecting mirror reflection, and right eye is only accepted the first display through the light of half-reflecting mirror transmission, just can observe 3D effect.

In Fig. 1, the polarization direction of 45 ° of polarized lights that LED second display sends has become vertical axisymmetric 135 ° after reflection, and 135 ° lucky vertical with 45 °, and the polarisation of light direction of namely sending with LED the first display is vertical.So allow the polaroid polarization direction of left eye right eye be respectively 135 ° and 45 °, just can allow left eye only see the image of LED the first display, right eye has only been seen the image of LED second display.Also have so a very large benefit, in production run, need not distinguish left eye screen and right eye screen exactly; All according to the polarization angle of 45 °, produce just passable.

It is a Primary Component that the half-reflecting mirror of the present embodiment is put, exactly because utilized this half-reflecting mirror, observer just can see the image that two displays send on the position of LED the first display simultaneously.Adjust also very convenient.

In actual use procedure, two displays need not strictly put angle in 90 ° in fact, only otherwise affect visual angle, 20 ° of errors are all fine with interior.Half-reflecting mirror is put on angular bisector also very simple.To be well placed after display, first estimate the position of half-reflecting mirror, roughly be placed on angular bisector, then on observation position, put on one's glasses, first open right eye and see the position of LED the first display, then opening left eye, to see whether LED second display frame overlaps with LED the first display just passable.Can adopt in this way the display device in this 3D system is produced as display device independently, the fixing position of the virtual image afterwards can not change along with the change at visual angle, as long as can see two screens when watching simultaneously, at will which angle can.About half-reflecting mirror, ideal parameters is T/R=5:5 (transmitted intensity/intensity of reflected light), long 400mm for the screen of 14 cun, and wide 250mm is just much of that.Thickness guarantee TR than in the situation that Bao Yuehao more, the impact that can avoid like this former and later two face return ghosts to bring; Half-reflecting mirror adopts flint glass best.

Polarization 3D glasses adopt prevailing polarization 3D glasses just passable; Its polarization direction is respectively 45 ° and 135 °.It doesn't matter in fact in left and right, because the output of computer can change setting according to glasses left and right.With present technique, the polarising glass of this accuracy requirement, the better cost of quality also only has several yuan.Place the notebook computer that a Daepori is logical, the common mirror of one side is vertically placed with it on the screen left side.The light polarization direction that display sends is 45 °, and the light polarization direction that the picture in mirror sends is 135 °.And 3D glasses right eye eyeglass polarization direction is 45 °, left eyeglass lens polarization direction is 135 °, so because linearly polarized light is can not be by polarization direction vertical polaroid with it, so by two eyeglasses respectively the picture in observation display and mirror just have different effects.Due to the relation of shooting angle, can not react well true effect, the effect of actual observation is can only see actual computer screen by right eye eyeglass, and sees that the computer screen in mirror is black; By left eyeglass lens, can only see the computer screen in mirror, and actual computer screen is black.

When observing vision signal, vision signal is divided into still image and dynamic image.

When being still image, principle is very simple because enter right and left eyes be respectively left and right two displays image.So allow the display on the left side show the image that your left eye is seen, the display on the right shows that the image of seeing on your the right is just passable.But it should be noted that the image due to the left side display of seeing is reversed left to right, so need to allow left side display play the picture of flip horizontal.If there is ready-made 3D photo, allow LED second display show eye image, the left-eye image that allows LED the first display reveal competence overturn is just passable.Oneself makes also very simple, aim at an object, eyes with camera when you, from the left side facing to him, take a photo, then so long distance between two moves right, take again a photo, then allow LED second display show the image of clapping from the right, make the image of the left side bat that LED the first display reveal competence overturn just passable.

When being dynamic image, namely video, plays.This implements difficulty and is mainly the image synchronization that how to allow two computers show.For a main frame, the situation of two displays, no problem, directly export all right.But this situation of notebook computer for two platform independent, needs more complicated processing.

The film source of 3D has been ready-made, comprised the needed image of right and left eyes, and large-scale 3D stereo game is also the image that can export two of left and right.Use TriDef 3D, the software of this class of Iz3D just can be accomplished these.As for two screen simultaneous displays, test finds to use transmission speed and the stability of WLAN (wireless local area network) (WLAN) to be difficult to meet the demands, but uses cable LAN (LAN), or cross spider directly connects and can meet this requirement.

The principle of rudimentary algorithm is as follows, first by A, to B, sends synchronous correcting signal, and content is the system time value T on A machine _a1, A oneself also records the time of sending signal simultaneously.After B receives, return signal is to A immediately, and content is the system time value T on B machine _b.The signal T that A is receiving B and returns _bafter, record while receiving signal oneself system time T simultaneously _a2.So, just can calculate the transmission time difference of AB two machines, the system time of AB two machines is poor so just can calculate, T _s=(T _b-T _a1-T _ab).Obtained the mistiming T of AB two machine systems _s, preliminary work is just done and is over.Displaying video is exactly in fact playing back at high speed picture.So when A machine is want in own system time time T ₃during playing pictures P, just in advance time signal (T _s+ T ₃) issue B, allow (the T of B at B system time _s+ T ₃) time playing pictures P just passable.Wherein lead should be greater than transmission required time T _ab.This process is carried out in real time, so can constantly revise the mistiming between AB two machines, reaches synchronous broadcasting.

Above-described embodiment of the present utility model, does not form the restriction to the utility model protection domain.Any modification of having done within spiritual principles of the present utility model, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present utility model.

Claims

1. A 3D display system is characterized in that it comprises a first display, a second display, a half mirror and polarized 3D glasses; wherein the polarized light emitted by the first display and the second display is in the same direction, and the first display and the backlight of the second display is an LED light source or a CCFL light source, and the panels of the first display and the second display are TN-type panels;

The first display and the second display are placed on the same plane at an angle a, and 70°≤a≤110°; on the bisector of the included angle between the half mirrors, the polarized 3D glasses are placed behind the half mirrors and located on the second half mirror. directly in front of the first or second monitor.

2. The 3D display system according to claim 1, wherein the angle formed by the first display and the second display is 90°.

3. The 3D display system according to claim 1 or 2, wherein the ratio of the transmitted light intensity T to the reflected light intensity R of the half mirror is 5:5, that is, T/R=5:5.

4. The 3D display system according to claim 3, wherein the half mirror is colorless glass.

5. The 3D display system according to claim 1, wherein the first display and the second display are controlled by a host.

6 . The 3D display system according to claim 5 , wherein the polarization direction of one lens in the polarized 3D glasses is 45°, and the polarization direction of the other lens is 135°.