CN202583690U

CN202583690U - High-performance stand-alone stereo projection system

Info

Publication number: CN202583690U
Application number: CN2012201870554U
Authority: CN
Inventors: 吴天阳; 洪惠泰
Original assignee: EVEREST PHOTOELECTRIC (WUXI) Co Ltd
Current assignee: EVEREST PHOTOELECTRIC (WUXI) Co Ltd
Priority date: 2012-04-28
Filing date: 2012-04-28
Publication date: 2012-12-05
Anticipated expiration: 2022-04-28

Abstract

The utility model provides a high-performance stand-alone stereo projection system. A polarizing plate is arranged in the front of a two-dimensional projector for converting the non-polarized light projected from the projector into the P polarized light or the S polarized light. A Fe ion-containing liquid crystal display panel is arranged between the polarizing plate and a metal screen, Fe ions are contained in the liquid crystal display panel, so the attenuation loss of the light can be effectively avoided, and the brightness of the light can also be significantly increased, that is the P' light and the S' light can be separated out in a high performance manner. The Fe ion-containing liquid crystal display panel is provided with a synchronous signal device for performing the switch-on operation and the switch-off operation on the polarized light passing through the polarizing plate, the polarized light (the P light or the S light) in one direction will be rotated +45 degrees and -45 degrees through the switch-on operation and switch-off operation at this time, so that the conversion from inputted three-dimensional video source image electric signals which are different for eyes a viewer into left eye and right eye light signals containing only the P' light and the S' light is completed, and the light signals are projected onto the metal screen and the equivalent polarized light containing only the P' light and the S' light is reflected out at this time, so that the three-dimensional effect can be realized through an ordinary polaroid glasses finally.

Description

High-effect unit stereo projection system

Technical field:

The utility model relates to a kind of optical projection apparatus, relates in particular to a kind of separate unit projector that passes through, and uses common polaroid glasses can efficiently view and admire the optical projection system of stereopsis.

Background technology:

The image-forming principle of the three-dimensional scenery seen of our human eye is now: when our two eyes were independently seen thing, left eye can only be seen the scenery of left eye, and right eye can only be seen the scenery of right eye; Because of nearly 6～7 centimetres spacing between our two eyes; When object of binocular fixation, the scene that eyes are seen not is a unanimity, can let two scenery of seeing individually displacements a little like this; What see is two width of cloth two dimensional images, through synthesizing of brain finally demonstrating relief scene.

No matter we see a film in the reality, TV, because being projected in simultaneously, light do not have displacement in the screen, thus the still common 2D imaging of our seeing mostly of seeing, but along with the arrival in 3D epoch, the 3D imaging technique can become the main product of optical imagery from now on.

The 3D technology has been developed multiple 3D projection display equipment through years of researches, and what use mostly at present is time-sharing approach and optical spectroscopy; Time-sharing approach wherein: mainly be after utilizing the common projection systems imaging, to put on fast gate-type glasses and realize, two eyeglasses of fast gate-type glasses adopt Electronic Control; Carry out the quick switching of light according to the output situation of display, make eyes see different pictures, thus the stereoeffect of experiencing; Higher because of fast gate-type glasses value, can only realize at the cinema, so do not utilize large tracts of land to promote; Thereby simultaneously fast gate-type glasses inductor is subject to the quick switching that extraneous light disturbs influences light, causes the fuzzy pictures seen and overlapping; Optical spectroscopy: mainly be to adopt two projector's projects images, projector's projection left-eye image signal, another projector of projection eye image signal; Adjust the projecting light path of images of left and right eyes respectively through the orthogonal polaroid of light transmission shaft direction; Make left and right sides projected image repeat projection imaging on the metal screen, the beholder can only see corresponding polarized light image through the polaroid glasses images of left and right eyes, thereby in visual system, produces stereo perception; Reach the purpose of viewing and admiring stereopsis; The stereo projection system hardware cost of two projection arrangements of similar use is higher, need use the metal screen simultaneously, and average family is difficult to install and realizes.

In order to overcome the deficiency of above technology; Invented in the practice and utilized mechanical type driving polarized lenses to switch light and utilize optical mirror slip to switch light; Reach separate unit projector and wear the optical projection system that polaroid glasses can be realized stereopsis, (patent No.: 201010225962.9) be example, this patent drives polarized lenses through the servo unit in the 3D polarizer and switches with national knowledge producing region office disclosed " separate unit projector plays the image playing system of 3D film " for the former; Make the left and right sides switching frequency and two width of cloth image switching frequencies of polarized lenses synchronous; The polarized lenses of rotation adopts the optical polarization technology synchronously, and left and right sides screen picture is separated fully, wears polarising glass when watching and can make two width of cloth pictures alternately appear in the right and left eyes; Produce stereoscopic vision; Light is with the frequency transmission of per second 120 frames during optical imagery, after the polarization separation P light and S light respectively with the frequency transmission of per second 60 frames to right and left eyes, drive polarized lenses because of this patent adopts the servo unit mechanical type in the 3D polarizer; The frequency of occurrences does not match and causes signal to occur disturbing the image fog that right and left eyes is seen easily; The latter is with State Intellectual Property Office's disclosed " polaroid glasses, polagizing filter, projector, stereo image system " (patent No.: 201120050306.X) be example; Optical wave plate in this patent utilization polagizing filter produces picture signal light alternately on schedule; Because of image replaces by frame sequential, thereby in visual system, produce stereo perception, reach the purpose of viewing and admiring stereopsis; Similar patent utilization optical wave plate is realized the conversion of picture signal; Can receive the image of manufacture craft to cause light to disturb, because of using normal liquid crystal panel response speed when signal switches slow, grow (TI) simultaneously so when signal switches, form the response time of right and left eyes light signal; Be easy to generate right and left eyes video signal interference range (P) like this, can occur right and left eyes equally and see the situation of image fog (as shown in Figure 1).

The utility model content:

The utility model is to the deficiency of prior art; Through before the 2D projector lens, installing Polarizer additional and containing Fe ionic liquid crystal panel; Efficiently P light and S light are exported in timesharing; Do not have the video signal interference range, the beholder wears common polariscope just can in time see isolated P light and S light, thereby reaches clear purpose of watching stereopsis.

For realizing this purpose, the utility model adopts following technical scheme:

High-effect unit stereo projection system comprises 2D projector, Polarizer, the liquid crystal board that contains the Fe ion, sync signal device, metal curtain and polaroid glasses; It is characterized in that: place a slice Polarizer before the 2D projector, the non-polarization property light that is used for that projector is projected is transformed into the P light or the S light of deflection polarity; Be placed with between Polarizer and the metal curtain and contain Fe ionic liquid crystal panel, owing to contain the Fe ion in the liquid crystal panel, can avoid the attenuation loss of light greatly, luminance brightness also can have significantly and promotes, and can isolate P ' light and S ' light that is: high-effectly.

The liquid crystal board of the described Fe of containing ion is provided with the sync signal device; Deflection polarity light through Polarizer is carried out the opening and closing action; This moment, the deflection polarity light (P light or S light) of a direction can be unlocked and+45 ° and-45 ° of closing motion rotations; The different image electric signal of so promptly having accomplished input of 3D film source right and left eyes becomes the left and right sides eye signal that has only P ' and S ' light; The light signal of this moment projects metal curtain and reflects the deflection polarity light that on an equal basis only contains P ' and S ', finally just can see the image of 3D effect through common polaroid glasses.

The soluble technical matters of the utility model patent is:

(1) through being placed with the liquid crystal board that contains the Fe ion behind the Polarizer; Replace normal liquid crystal panel; Owing to contain the Fe ion in the liquid crystal panel, so the sync signal device will be higher than the response speed of normal liquid crystal panel in signal response speed when containing Fe ionic liquid crystal panel and switch, and is difficult for existing right and left eyes signal interference range when like this images of left and right eyes signal being separated; Comparing the normal liquid crystal panel signal switches; Can avoid the attenuation loss of light greatly, luminance brightness also can have significantly lifting, can isolate P ' light and S ' light that is: high-effectly.

(2) adopt the sync signal device to through the quick perception R of photoresistance; The opening and closing action that contains Fe ion liquid crystal board is controlled in the switching of L signal; Can make P ' light and S ' light after the polarization separation respectively with the frequency transmission of per second 60 frames to right and left eyes; With wear polaroid glasses and see that optics is synchronous, reach and efficiently view and admire the stereoprojection effect.

Description of drawings:

Fig. 1 is original liquid crystal panel response light synoptic diagram;

Wherein: S: signal; T: time; TI: response time; P: video signal interference range.

Fig. 2 is the structural representation of the utility model;

Wherein: 1,2D projector; 2, Polarizer; 3, the liquid crystal board that contains the Fe ion; 4, sync signal device; 5, metal curtain; 6, polaroid glasses.

Fig. 3 contains the liquid crystal board response light synoptic diagram of Fe ion for the utility model;

Wherein: S: signal; T: time; T2: response time.

Fig. 4 is the utility model sync signal device control light synoptic diagram;

Fig. 5 is the utility model sync signal device induction action synoptic diagram;

Embodiment:

As shown in the figure; Install Polarizer 2 in 2D projector 1 outside additional the non-polarization light of 2D projection carried out polarization, the light of polarization (P light or S light) through one receive 4 controls of sync signal device contain Fe ionic liquid crystal panel 3, sync signal device 4 is with deflection polarity light timesharing output P ' light and S ' light; Owing to contain the Fe ion in the liquid crystal panel; Therefore sync signal device 4 will be higher than the response speed of normal liquid crystal panel in response speed when containing Fe ionic liquid crystal panel 3 and switch, and the response time of formation right and left eyes light signal is lacked (T2) when signal switches, is difficult for existing right and left eyes signal interference range when like this images of left and right eyes signal being separated; Comparing normal liquid crystal panel switches; Can avoid the attenuation loss of light greatly, luminance brightness also can have significantly lifting, can isolate P ' light and S ' light that is: high-effectly; Simultaneously; It is relevant that frame rate is input to the video signal frame rate of 2D projector; As the video signal frame rate of importing 2D projector reaches 120Hz, adopts 4 pairs of sync signal devices through the quick perception R of photoresistance, and the switching of L signal is controlled the opening and closing that contain Fe ion liquid crystal board 3 and moved; Can make after the polarization separation P ' light and S ' light respectively fast output frame speed be 60Hz; This synthetic light finally projects the people that a metal curtain 5 back reflections can be had polaroid glasses 6 and sees that two eyeglasses of polaroid glasses 6 can be seen different P ' light and S ' optical image content simultaneously, thereby reaches clear purpose of watching stereopsis;

The utility model patent structure is comparatively simple, and can reequip most 2D projector is 3D projector, and just uses common polaroid glasses, with low cost, has promotional value.

Claims

1. high-effect unit stereo projection system comprises 2D projector, Polarizer, the liquid crystal board that contains the Fe ion, sync signal device, metal curtain and polaroid glasses; It is characterized in that: place a slice Polarizer before the 2D projector, be placed with between Polarizer and the metal curtain and contain Fe ionic liquid crystal panel.

2. high-effect unit stereo projection system according to claim 1, it is characterized in that: the liquid crystal board of the described Fe of containing ion is provided with the sync signal device.