CN209590503U - A kind of projection arrangement - Google Patents

Abstract

The utility model is suitable for projection art, provide a kind of projection arrangement, including light source part and liquid crystal chip part, light source part issues the incident light including first band light, second band light and third band of light, it is incident to liquid crystal chip part, liquid crystal chip part first band light, second band light and third band of light are modulated in first time period, second time period and respectively according to control signal in the third period, three sprites are generated respectively, and three sprites correspond to the time of a frame picture jointly.By liquid crystal chip part, modulation obtains corresponding three sprites of image frame to the utility model respectively in a very short period of time, utilize human eye vision persistence effect, liquid crystal chip part can be arranged for one chip, multi-disc liquid crystal chip is respectively set in multiple color components without corresponding video image, the fine definition of existing 3LCD shadow casting technique, it is bright-colored the advantages that, production cost can be reduced again, and shadow casting technique is facilitated to be promoted with superelevation cost performance.

Description

A kind of projection arrangement

Technical field

The utility model relates to projection art, in particular to a kind of projection arrangement.

Background technique

There are DLP (Digital Light Processing, digital light processing), LCD in the shadow casting technique of mainstream at present (Liquid Crystal Display, liquid crystal display) and LCOS (Liquid Crystal on Silicon, liquid crystal on silicon) three Kind, wherein LCD projection is divided to the 3LCD projection of mainstream and Single panel LCD to project two kinds again.

In camp, projector, the LCD projector of mainstream is all made of 3 chip HTPS (High at present Temperature Poly-Silicon, high temperature polysilicon) LCD liquid crystal board, abbreviation 3LCD.Why 3LCD projector possesses out Many colors and technical design are undivided.Its three pieces HTPS liquid crystal display panel be each responsible for vision signal it is red, green, The characteristics of blue three components, the imaging and color rendition of 3LCD technology is first by three primary colors while to carry out sufficient spatial mixing, The image of different color is projected again, also known as spatial mixing reduction simultaneously.Each HTPS liquid crystal display panel of 3LCD projector Liquid crystal containing ten hundreds of (or even up to a million) can be configured to the state of open and close or part closing to allow light Through.When working normally, each liquid crystal works as shutter.When three color of red, green, blue is through different When HTPS liquid crystal display panel, liquid crystal be based on the moment pixel in each color need it is each need how much, immediately open and Closure, has been achieved the modulation to light, to produce the image projected on screen.Come from the practical impression of user It sees, the image of 3LCD projector appears to limpider, and noise is less, and color rendition is also more accurate.

Single panel LCD projector principle is to remove the backlight portion of LCD panel, is then passed through using powerful backlight Condenser is irradiated in LCD panel, and since LCD panel is light transmission, picture illuminated will go out, and passes through the focus lamp of front And camera lens is got on screen and is imaged.Its principle and the projector of teaching are closely similar, its advantage is that it is cheap, the disadvantage is that Single panel LCD panel transmitance is too low, and color is not bright-coloured enough, and brightness only has several hundred lumens, hardly enters high-end commercial affairs and household city .

Therefore, it is necessary to provide a kind of optical projection system that can either retain the picture advantage of 3LCD, take into account low cost again.

Utility model content

The purpose of this utility model is to provide a kind of projection arrangements, it is intended to solve the technology at high cost of 3LCD projector Problem.

The utility model is realized in this way a kind of projection arrangement, comprising:

Light source part, for emitting incident light, the incident light includes first band light, second band light and third wave band Light；

Liquid crystal chip part, the side of the incident light beam strikes to the liquid crystal chip part, and from the liquid crystal chip Partial other side outgoing, the liquid crystal chip part is according to control signal in first time period, second time period and third Between the modulation first band light, second band light and third band of light are respectively corresponded in section, with generate respectively the first sprite, Second sprite and third sprite；First sprite, the second sprite and third sprite can correspond to one frame of synthesis Picture.

In one embodiment, the light source part includes white-light emitting component and color separated component, the color point The first band light in white light for allowing the white-light emitting component to issue from component passes through in first time period, allow described in Second band light in white light passes through in second time period, and allows the third band of light in the white light in the third time Pass through in section；The first band light, second band light and third band of light are successively incident to the liquid crystal chip part.

In one embodiment, the color separated component includes that allow the first band light to pass through first is filtered Device, the second optical filter for allowing the second band light to pass through and the third optical filter for allowing the third band of light to pass through, institute State the first optical filter, the second optical filter and third optical filter successively switching position to passing through the white light；Or

The color separated component includes beamsplitter element group and timesharing selection element, the beamsplitter element group be used for from The white light separates the first band light, second band light and third band of light, and the timesharing selection element is correspondingly Set on the sub-light road of the first band light, second band light and third band of light, the timesharing selection element is successively in institute State movement in first time period, second time period and third period.

In one embodiment, the light source part include for issue the first light-emitting component of the first band light, Third light-emitting component for issuing the second light-emitting component of the second band light and for issuing third band of light；Described One light-emitting component, the second light-emitting component and third light-emitting component are successively when the first time period, second time period and third Between open in section.

In one embodiment, the projection arrangement further includes being set between the light source part and liquid crystal chip part The first band light, second band light and third band of light are converted by polarization conversion part, the polarization conversion part The polarised light of same polarization direction；The liquid crystal chip part includes liquid crystal display panel, set on the incident side of the liquid crystal display panel The outgoing polarization element of incident polarization element and the light emission side set on the liquid crystal display panel；The incident polarization element and outgoing The absorption axiss of polarizer are set as being parallel to each other and allow the inclined of the first band light, second band light and third band of light Vibration light passes through.

In one embodiment, the incident polarization element include allow the first band light to pass through first it is incident partially Vibration piece, the second incident polarizer for allowing the second band light to pass through and the third for allowing the third band of light to pass through are incident Polarizing film, first incident polarizer, the second incident polarizer and third incident polarizer successively the first time period, Second time period and in the third period switching position to being aligned with the liquid crystal display panel.

In one embodiment, first incident polarizer, the second incident polarizer and third incident polarizer are uniform It is set on turntable, in the rotation process of the turntable, first incident polarizer, the second incident polarizer and third enter Polarizing film is penetrated successively to be aligned with the liquid crystal display panel.

In one embodiment, first incident polarizer, the second incident polarizer and the setting of third incident polarizer In on cricoid load-bearing part, the liquid crystal display panel is set to the inside of the load-bearing part, in the rolling process of the load-bearing part, institute The first incident polarizer, the second incident polarizer and third incident polarizer is stated successively to be aligned with the liquid crystal display panel.

In one embodiment, the outgoing polarization element includes that allow the first band light to pass through first is emitted partially Vibration piece, the second outgoing polarization piece for allowing the second band light to pass through and the third for allowing the third band of light to pass through are emitted Polarizing film, the first outgoing polarization piece, the second outgoing polarization piece and third outgoing polarization piece successively the first time period, Second time period and in the third period switching position to being aligned with the liquid crystal display panel.

In one embodiment, the projection arrangement further includes projection lens set, and the projecting lens is mounted on the liquid The light emission side of brilliant chip part, for projecting first sprite, the second sprite and third sprite respectively.

Single panel LCD projection optical system provided by the embodiment of the utility model, including light source part and liquid crystal chip part, Light source part can issue the incident light including first band light, second band light and third band of light, incident light beam strikes to liquid On brilliant chip part, liquid crystal chip part is divided in first time period, second time period and in the third period according to control signal Not Tiao Zhi first band light, second band light and third band of light, incident light it is modulated and be emitted after generate respectively first son draw Face, the second sprite and third sprite, the first sprite, the second sprite and third sprite correspond to a frame picture jointly Time, the first sprite, the second sprite and third sprite project on screen respectively and enter people in a very short period of time Eye, using human eye vision persistence effect, the first sprite, the second sprite and third sprite synthesize a frame picture jointly, should Image frame is decomposed into three sprites successively projected using human eye persistence effect by projection arrangement, and liquid crystal chip part can be Multi-disc liquid crystal chip is respectively set in one chip setting, multiple color components without corresponding video image, has both possessed 3LCD projection The fine definition of technology, it is bright-colored the advantages that, and reduce production cost, shadow casting technique facilitated to be pushed away with superelevation cost performance Extensively.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of projection arrangement provided by the embodiment of the utility model；

Fig. 2 is the index path one of projection arrangement provided by the embodiment of the utility model；

Fig. 3 is the index path two of projection arrangement provided by the embodiment of the utility model；

Fig. 4 is the index path three of projection arrangement provided by the embodiment of the utility model；

Fig. 5 is the structure chart of the polarization conversion part of projection arrangement provided by the embodiment of the utility model；

Fig. 6 is the decomposition chart one of the changeover module of projection arrangement provided by the embodiment of the utility model；

Fig. 7 is the assembling assumption diagram one of the changeover module of projection arrangement provided by the embodiment of the utility model；

Fig. 8 is the structure chart two of the changeover module of projection arrangement provided by the embodiment of the utility model；

Fig. 9 is the switching component structure figure three of projection arrangement provided by the embodiment of the utility model；

Figure 10 is the decomposition chart four of the changeover module of projection arrangement provided by the embodiment of the utility model；

Figure 11 is the assembling assumption diagram four of the changeover module of projection arrangement provided by the embodiment of the utility model；

Figure 12 is the structure chart five of the changeover module of projection arrangement provided by the embodiment of the utility model；

Figure 13 is the structure chart six of the changeover module of projection arrangement provided by the embodiment of the utility model.

Meaning marked in the figure are as follows:

100- projection arrangement；

9- shell, 8- convergent lens part, the control section 70-, 75- camera lens part, 751- projection lens set；

1- light source part, 11,11 '-white-light emitting components, 12,12 '-color separated components, the first optical filter of 121-, The second optical filter of 122-, 123- third optical filter, 124- beamsplitter element group, 125- timesharing selection element, 13- first shine first Part, the second light-emitting component of 14-, 15- third light-emitting component；

2- liquid crystal chip part, 20- liquid crystal display panel, 21- incident polarization element, 22- outgoing polarization element；

3- polarization conversion part, prism 31, polarization beam splitter 32, reflective membrane 33, quarter-wave plate 34；

40- turntable, 41- shaft, the installation position 401-；

50- rolling member, 51- load-bearing part, 513- fixed bit, the first side 511-, 512- second side；

The first sprite of 61-, the second sprite of 62-, 63- third sprite.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this Utility model is not used to limit the utility model.

It should be noted that when component is referred to as " being fixed on " or " being set to " another component, it can directly or It connects on another component.When a component is known as " being connected to " another component, it be can be directly or indirectly It is connected on another component.The orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right" is based on attached drawing Shown in orientation or positional relationship, be merely for convenience of describing, rather than the device or element of indication or suggestion meaning must have There is specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to this patent.Term " first ", " second " is used merely to facilitate description purpose, is not understood to indicate or imply relative importance or implicitly indicates technical characteristic Quantity.The meaning of " plurality " is two or more, unless otherwise specifically defined.

In order to illustrate technical solution described in the utility model, carried out specifically below in conjunction with specific accompanying drawings and embodiments It is bright.

The utility model embodiment provides a kind of projection arrangement 100 referring to FIG. 1 to FIG. 4, including shell 9, is set to shell Light source part 1 and liquid crystal chip part 2 in body 9, and the camera lens part 75 being set on shell 9, wherein light source part 1 is used In generating incident light, which includes first band light, second band light and third band of light, incident light beam strikes to liquid crystal core On piece part 2, liquid crystal chip part 2 is distinguished in first time period, second time period and in the third period according to control signal Modulation first band light, second band light and third band of light, incident light are emitted after the modulation of liquid crystal chip part 2, to divide The first sprite 61, the second sprite 62 and third sprite 63 are not generated, are finally projected away through camera lens part 75.

Projection arrangement 100 provided by the embodiment of the utility model, including shell 9 and the light source portion being set in shell 9 Point 1 and liquid crystal chip part 2, light source part 1 can issue entering including first band light, second band light and third band of light Penetrate light, on incident light beam strikes to liquid crystal chip part 2, liquid crystal chip part 2 is according to control signal in first time period, second Between section and first band light, second band light and third band of light are modulated in the third period respectively, incident light is modulated and goes out The first sprite 61, the second sprite 62 and third sprite 63, the first sprite 61, the second sprite 62 are generated after penetrating respectively Correspond to the time of a frame picture jointly with third sprite 63, in a very short period of time the first sprite 61, the second sprite 62 Project on screen and enter human eye respectively with third sprite 63, using human eye vision persistence effect, the first sprite 61, the One frame picture of synthesis, the projection arrangement 100 utilize human eye persistence effect by image jointly for two sprites 62 and third sprite 63 Picture decomposition is three sprites successively projected, and liquid crystal chip part 2 can be arranged for one chip, without corresponding video image Multi-disc liquid crystal chip is respectively set in multiple color components, both possessed 3LCD shadow casting technique fine definition, it is bright-colored the advantages that, Production cost is reduced again, and shadow casting technique is facilitated to be promoted with superelevation cost performance.

It should be noted that first band light, second band light and third band of light are three components of white (W) light, tool Body, be described below herein in will be red (R) light with first band light, second band light is green (G) light and third band of light is Blue (B) light is illustrated.Certainly, first band light, second band light and third band of light are not limited to above-mentioned trichromatic sequence, It can be any sequence.

As shown in Fig. 2, the sum of first time period (t1), second time period (t2) and third period (t3) are equivalent to a frame The time (T) of picture, also referred to as frame period time, T=1/F, wherein F is the frame per second of current image signal.Preferably implement one In, t1=t2=t3=T/3, i.e., feux rouges is emitted from light source part and is incident to liquid crystal core in 1/3 time before each frame It is modulated in piece part 2, obtains red sprite, green light is emitted simultaneously from light source part within 1/3 time of the centre of each frame It is incident in liquid crystal chip part 2 and is modulated, obtain green sprite, blue light is from light source portion within rear 1/3 time of each frame Be emitted and be incident in liquid crystal chip part 2 in part and modulated, obtain blue sprite, red sprite, green sprite and Blue sprite enters human eye within the time of T/3 respectively, since human eye has visual persistence effect, red sprite, green Sprite and blue sprite can synthesize the picture of corresponding frame.

Herein, the refreshing frequency of projection arrangement 100 with no restriction, such as has 144Hz, 72Hz etc. at present, for 144Hz's Refreshing frequency, frame period time T=1/144s=0.006944s, then the time that each of three primary colors occupy be 0.002315s。

Certainly, referring to Fig. 1, projection arrangement provided by the embodiment of the utility model 100 further includes being set in shell 9 Control section 70, control section 70 are connected to liquid crystal chip part 2, for parsing the picture signal of input, are believed according to the image It number generates corresponding timing control signal, scanning signal and data-signal and is provided to liquid crystal chip part 2, in each frame The transmission of feux rouges, green light and blue light is controlled in different time sections respectively.

Referring to Fig. 1, in one embodiment, projection arrangement 100 provided by the embodiment of the utility model may also include meeting Poly- lens component 8, convergent lens part 8 are set in the optical path between light source part 1 and liquid crystal chip part 2, convergent lens portion Divide 8 for assembling feux rouges, green light and blue light from light source part 1 respectively, the feux rouges, green light and blue light after convergence successively enter It is mapped on liquid crystal chip part 2, to improve the utilization rate of the light of light source part 1.Referring to Fig. 1, in one embodiment, this The camera lens part 5 for the projection arrangement 100 that utility model embodiment provides may include projection lens set 51, and projection lens set 51 is set to The light emission side of liquid crystal chip part 2, the first sprite 61,62 and of the second sprite for will be exported from liquid crystal chip part 2 Third sprite 63 projects respectively and reaches screen, metope etc. and is projected on face.

It is described below in conjunction with Fig. 2 to Fig. 4, in the present embodiment, feux rouges, green light and blue light reach liquid crystal chip portion Successively occur according to certain frequency and duration before dividing 2.I.e. light source part 1 can first time period, second time period and Feux rouges, green light and blue light are emitted in the third period respectively.

Please see Fig. 2 to Fig. 4, light source part 1 realizes the control of the outgoing of feux rouges, green light and blue light there are many mode, Specifically can be and directly successively issue feux rouges, green light and blue light according to scheduled frequency and duration, be also possible to issue it is continuous, Feux rouges, green light and blue light therein are successively intercepted according to scheduled frequency and duration on the basis of mixing light.

In some embodiments, as shown in Figures 2 and 3, light source part 1 includes white-light emitting component 11,11 ' and color point From component 12,12 ', white-light emitting component 11 and 11 ' can issue white light, and color separated component 12 and 12 ' allows in white light Feux rouges passes through in first time period, and the green light in white light is allowed to pass through and allow the blue light in white light in second time period Pass through within the third period.

In this embodiment, white-light emitting component 11 and 11 ' can be the LED (Light- that can issue white light Emitting Diode, Light-Emitting Diode), metal halid lamp, any one of ultrahigh pressure mercury lamp etc., needed according to brightness, The specific choice such as cost and stability, herein with no restrictions.

In this embodiment, one kind is achieved in that, as shown in Fig. 2, color separated component 12 includes the first optical filter 121, the second optical filter 122 and third optical filter 123, the first optical filter 121 allow feux rouges to pass through without allowing green light and blue light Pass through, the second optical filter 122 allows green light by the way that without allowing feux rouges and blue light to pass through, third optical filter 123 allows blue light logical It crosses without allowing feux rouges and green light to pass through, the first optical filter 121 is moved in the optical path of white light in first time period, to produce Raw feux rouges, the second optical filter 122 is moved in the optical path of white light in first time period, so that green light is generated, in the third time Third optical filter 123 is moved in the optical path of white light in section, to generate blue light.

It is preferred that the first optical filter 121, the second optical filter 122 and third optical filter 123 would not allow for respectively by Light absorption makes picture to avoid that may enter instead in the optical path at 12 rear of color separated component after reflection or scattering At interference.

Specifically, the first optical filter 121, the second optical filter 122 and third optical filter 123 can be set to the shape of colour wheel Formula is arranged and rotates around same centre point, the revolving speed of colour wheel is adapted to required frame per second, to distinguish during rotation Generate feux rouges, green light and the blue light of corresponding T/3 time.

Certainly, the quantity of the first optical filter 121 on colour wheel, the second optical filter 122 and third optical filter 123 can be one Group or multiple groups.In the case where one group, the time of one circle of colour wheel rotation can be equal to the frame period time, in the case where multiple groups, The time of one circle of colour wheel rotation can be equal to the sum of corresponding multiple frame period times.First optical filter 121, the second optical filter on colour wheel 122 and the setting of third optical filter 123 specifically carry out as needed, can be without being limited thereto.In a particular application, the first optical filter 121, the second optical filter 122 and third optical filter 123 may respectively be corresponding optical filtering sheet form, such as respectively Red lightscreening plate, Green color filter and blue color filter.

In this embodiment, as shown in figure 3, another kind is achieved in that, color separated component 12 ' includes beamsplitter element White light is separated feux rouges, green light and blue light by 124 (such as colour splitting prism groups) of group and timesharing selection element 125, spectroscope, and red Light, green light and blue light are located at different sub-light roads, are preferably parallel to each other and are spaced setting.Three timesharing selection elements 125 are set to the corresponding sub-light road of feux rouges, the corresponding sub-light road of green light and the corresponding sub-light of blue light on the road correspondingly, and this three Timesharing selection element 125 is successively acted in preceding T/3, centre T/3 and in the rear T/3 time, and then chooses the corresponding T/3 time respectively Feux rouges, green light and blue light.

In a concrete application, timesharing selection element 125 can be shutter.Certainly, any to be opened or closed with timesharing Element also can be applied to this.

In another embodiment, as shown in figure 4, light source part 1 include for issue the first light-emitting component 13 of feux rouges, Third light-emitting component 15 for issuing the second light-emitting component 14 of green light and for issuing blue light, and for controlling the first hair The light emission controller of optical element 13, the second light-emitting component 14 and third light-emitting component 15, the first light-emitting component 13, second shine first Part 14 and third light-emitting component 15 are according to the control signal of light emission controller successively in first time period, second time period and third It is opened in period, so as to directly generate the feux rouges for respectively corresponding the T/3 time, green light and blue light.

In this embodiment, the first light-emitting component 13, the second light-emitting component 14 and third light-emitting component 15 may each be LED, accordingly, the first light-emitting component 13 are red-light LED, and the second light-emitting component 14 is green light LED, and third light-emitting component 15 is indigo plant Light LED.

Alternatively, in this embodiment, the first light-emitting component 13, the second light-emitting component 14 and third light-emitting component 15 can divide It is not red laser light source, green laser light source and blue laser light source.

Please see Fig. 2 to Fig. 4, liquid crystal chip part 2 is used to carry out feux rouges, green light and blue light from light source part 1 Modulation.

Here, projection arrangement 100 provided by the embodiment of the utility model further includes optical rotation incorporated by reference to shown in Fig. 1 and Fig. 5 Part 3 is changed, which is set between convergent lens part 8 and liquid crystal chip part 2, for that will come from light source The natural light of part 1 is all converted to the polarised light of same polarization direction, to be all incident on liquid crystal chip part 2, into one Step improves the utilization rate of light.

Specifically, as shown in figure 5, providing a kind of specific structure of polarization conversion part 3, which includes Two prisms 31 are equipped with polarization beam splitter 32, the inclined-plane of one of prism 31 on the faying face between two prisms 31 On be additionally provided with reflective membrane 33, quarter-wave plate 34 is additionally provided on the light-emitting surface of the prism 31.Natural light first passes around first 31 back reflection of prism goes out S light, and P light is by the reflection of reflective membrane 33 and is converted to after the effect of quarter-wave plate 34 S light, To which the natural light from light source part 1 is all converted to the polarised light of same polarization direction.Certainly, it may still press from both sides in practice Miscellaneous a small amount of P light, but will not at least lose the light close to half.

In other embodiments, polarization conversion part 3 can be other any feasible specific structures, not limit herein System.

As shown in Figures 2 to 4, liquid crystal chip part 2 include the incident polarization element 21 set gradually along optical path direction, Liquid crystal display panel 20 and outgoing polarization element 22.Incident polarization element 21 and outgoing polarization element 22 respectively have orthogonal suction Axis and light transmission shaft are received, and incident polarization element 21 and outgoing polarization element 22 are arranged in parallel, i.e. incident polarization element 21 Absorption axiss and the absorption axiss of outgoing polarization element 22 are arranged in parallel.Liquid crystal display panel 20 includes multiple pixels, a plurality of data Line and multi-strip scanning line, each pixel are limited by a scan line and data line intersection, are opened by scanning line traffic control Or close, different pixel voltages is subjected to by data line traffic control, under the action of pixel voltage, each pixel is corresponding Liquid crystal molecule carries out different degrees of deflection.

Incident polarization element 21 and outgoing polarization element 22, which are disposed as its light transmission shaft, allows S light to pass through.Incident polarization member A small amount of P photo-electric switch that part 21 will further be mingled with, guarantee enter liquid crystal display panel 20 completely with S light.S light enters in liquid crystal display panel 20 Each pixel.The corresponding liquid crystal molecule of each pixel on liquid crystal display panel 20 according to the data voltage being applied into The corresponding deflection of row, to control the degree of deflection of the S light entered, the S light of different degree of deflection is incident on outgoing polarization element 22 On, further as the selectivity of the light transmission shaft of outgoing polarization element 22, the S light not deflected then can be all emitted, hair The S light of first portion deflection then can be partially emitted, thus each corresponding pixel be emitted from outgoing polarization element 22 it is corresponding Light, generates the picture of corresponding grey scale value, and the pixel picture of different gray scales constitutes a sprite.

Feux rouges, green light and blue light successively pass through the liquid crystal chip part 2 as a result, and point of a display picture can be obtained The third of the first sprite 61 of red component, the second sprite 62 of corresponding green component and corresponding blue component is not corresponded to Sprite 63.

In some embodiments, incident polarization element 21 and outgoing polarization element 22 can be bonded with liquid crystal display panel 20, are solid It is scheduled on together, and is also secured to inside shell 9.Incident polarization element 21 and outgoing polarization element 22 allow feux rouges, green simultaneously The S light of light and blue light penetrates.This kind of mode be arranged it is simple, be less likely to be damaged, the projection of the utility model embodiment can be reduced The cost of device 100.

In some embodiments, as shown in Fig. 6 to Figure 13, in incident polarization element 21 and outgoing polarization element 22 at most At least one of one is bonded with liquid crystal display panel 20 and is fixed together, but select following design.

Design one: incident polarization element 21 is designed according to the wavelength characteristic of feux rouges, green light and blue light, to be directed to respectively Unwanted light in feux rouges, green light and blue light reaches optimal absorbability.Specifically, incident polarization element 21 includes first Incident polarizer, the second incident polarizer and third incident polarizer (not shown), particularly, the first incident polarizer allow red Light passes through, and other light except feux rouges are all absorbed, and similarly, the second incident polarizer allows green light to pass through, and will be green Other light except light all absorb, and third incident polarizer allows blue light to pass through, and other light except blue light are complete Portion absorbs, to improve the contrast of picture.First incident polarizer, the second incident polarizer and third incident polarizer successively exist First time period, second time period and in the third period switching position to being aligned with liquid crystal display panel, i.e. the first incident polarizer, Second incident polarizer and third incident polarizer are successively switched over according to the light of the color currently needed.

Design two: outgoing polarization element 22 is designed according to the wavelength characteristic of feux rouges, green light and blue light, to be directed to respectively Unwanted light in feux rouges, green light and blue light reaches optimal absorbability.Specifically, outgoing polarization element goes out including first Polarizing film, the second outgoing polarization piece and third outgoing polarization piece (not shown) are penetrated, particularly, the first outgoing polarization piece allows feux rouges Pass through, and other light except feux rouges are all absorbed, similarly, the second outgoing polarization piece allows green light to pass through, and by green light Except other light all absorb, third outgoing polarization piece allows blue light to pass through, and other light except blue light are whole It absorbs, to improve the contrast of picture.First outgoing polarization piece, the second outgoing polarization piece and third outgoing polarization piece are successively One period, second time period and switching position with liquid crystal display panel to being aligned in the third period, i.e. the first outgoing polarization piece, the Two outgoing polarization pieces and third outgoing polarization piece are successively switched over according to the light of the color currently needed.

Incident polarization element 21 and outgoing polarization element 22 all can be monolithic forms, or multi-disc combining form. Similarly, the first incident polarizer in incident polarization element 21, the second incident polarizer and third incident polarizer is each A may be monolithic form or multi-disc combining form, and the first outgoing polarization piece, the second outgoing in outgoing polarization element 22 are inclined Each of vibration piece and third outgoing polarization piece may be monolithic form or multi-disc combining form.This foundation is specifically needed and is set Meter is selected, and is advisable with the optimum balance reached between light efficiency and contrast.

Specifically, the switching of incident polarization element and/or outgoing polarization element is realized using changeover module.

As shown in Figures 6 to 9, changeover module is rotary type, including turntable 40.Incident polarization element 21 and/or outgoing are inclined (the first incident polarizer, the second incident polarizer, third incident polarizer, first go out corresponding sub- polarizing film in vibration element 22 Penetrate polarizing film, the second outgoing polarization piece and third outgoing polarization piece) on the installation position 401 that is uniformly arranged on turntable 40, turning It during disk 40 rotates, incident polarization element 21 and/or penetrates polarizer 22 and is successively aligned with liquid crystal display panel 20 ', and this turn The revolving speed of disk 40 is adapted to required frame per second, within every T/3 time, to make incident polarization element 21 and/or outgoing polarization member Required sub- polarizing film is successively aligned with liquid crystal display panel 20 ' in part 22.

Specifically, changeover module further includes shaft 41, and turntable 40 can be by being connected to the shaft of the center position of turntable 40 41 drive rotation, and as shown in Figures 6 to 9, other can realize song of the mode also such as by being connected to the non-center location of turntable 40 Axis drives rotation, these can realize that mode repeats no more.Certainly, herein can not exhaustive turntable 40 rotating manner, it is any can The mode that sub- polarizing film required for driving the rotation of turntable 40 and making successively is aligned with liquid crystal display panel 20 ', can be applied to this.

As shown in figure 9, turntable 40 can be single layer, it is set to the light emission side of outgoing polarization element 22, is set suitable for above-mentioned Meter two, the first outgoing polarization piece, the second outgoing polarization piece and third outgoing polarization piece are distributed evenly on turntable 40 and fix In on installation position 401；

Alternatively, as shown in figure 8, the incident side of incident polarization element 21 is arranged in turntable 40, suitable for above-mentioned design one, First incident polarizer, the second incident polarizer and third incident polarizer are distributed evenly on turntable 40 and are fixed on installation On position 401；

Alternatively, turntable 40 is bilayer, as shown in Figure 6 and Figure 7, correspondingly, wherein setting on the installation position 401 of one layer of turntable 40 There are the first incident polarizer, the second incident polarizer and third incident polarizer, wherein on the installation position 401 of another layer of turntable 40 Equipped with the first outgoing polarization piece, the second outgoing polarization piece and third outgoing polarization piece, liquid crystal display panel 20 ' is set to two layers of turntable 40 Between, which rotates synchronously, the first incident polarizer on two layers of turntable 40 be aligned with the first outgoing polarization piece and Synchronism switching, the second incident polarizer is aligned with the second outgoing polarization piece and synchronism switching and third incident polarizer and the The case where three outgoing polarization pieces are aligned and synchronism switching, suitable for above-mentioned design one and design two simultaneous selections.

As shown in Figure 10 to Figure 13, changeover module is roller.Incident polarization element 21 and/or outgoing polarization element 22 are logical It crosses roll form and is driven translation.Specifically, changeover module includes cricoid load-bearing part 51 and load-bearing part 51 is driven to roll Rolling member 50.

As shown in Figure 10 to Figure 13, incident polarization element 21 and/or outgoing polarization element 22 are sequentially arranged in cricoid hold In holder 51, specifically, load-bearing part 51 is equipped with multiple fixed bits 513.Rolling member 50 engages biography with the medial surface of load-bearing part 51 Dynamic, liquid crystal display panel 20 ' is set to the inside of cricoid load-bearing part 51, and load-bearing part 51 enters light with corresponding liquid crystal display panel 20 ' as a result, The first side 511 and second side 512 of side and light emission side setting.

It in this case, as shown in figure 12, can be incident by the first incident polarizer, the second incident polarizer and third Polarizing film is successively set on the fixed bit 513 of the first side 511, and hollow out setting or transparent setting are corresponded in second side 512, so that The first incident polarizer, the second incident polarizer and third incident polarizer on the first side 511 respectively with liquid crystal display panel 20 ' When alignment, second side 512 will not influence the outgoing of light from outgoing polarization element 21, suitable for above-mentioned design one；

As shown in figure 13, the first outgoing polarization piece, the second outgoing polarization piece and third outgoing polarization piece can successively be set It sets on the fixed bit 513 of second side 512, hollow out setting or transparent setting is corresponded on the first side 511, so that in second side 512 On the first outgoing polarization piece, the second outgoing polarization piece and third outgoing polarization piece when being aligned respectively with liquid crystal display panel 20 ', first Side 511 will not influence the incidence of light to incident polarization element 21, suitable for above-mentioned design two；

It as shown in Figure 10 and Figure 11, can also be by the first incident polarizer, the second incident polarizer and third incident polarization Piece is successively set on the fixed bit 513 of the first side 511, while by the first outgoing polarization piece, the second outgoing polarization piece and third Outgoing polarization piece is successively set on the fixed bit 513 of second side 512, also, since the first side 511 and second side 512 are anti- To translation, the first incident polarizer, the second incident polarizer and third incident polarizer put in order and the first outgoing polarization Piece, the second outgoing polarization piece and third outgoing polarization piece put in order on the contrary, being suitable for above-mentioned design one and design two simultaneously The case where selection.

Certainly, the switching of incident polarization element 21 and/or outgoing polarization element 22 is not limited to the above-mentioned turntable form provided And roll form can also set shutter for incident polarization element 21 and/or outgoing polarization element 22 in other embodiments Form, corresponding sub- polarizing film is respectively in first time period, second in incident polarization element 21 and/or outgoing polarization element 22 It is acted in period and third period so that the S light of feux rouges, green light and blue light passes sequentially through, it is any to can be used for sub- polarizing film The mode of switching can be applied to this, repeat no more.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. a kind of projection arrangement characterized by comprising

Light source part, for emitting incident light, the incident light includes first band light, second band light and third band of light； And

Liquid crystal chip part, the side of the incident light beam strikes to the liquid crystal chip part, and from the liquid crystal chip part The other side outgoing, the liquid crystal chip part according to control signal in first time period, second time period and third period The modulation first band light, second band light and third band of light are respectively corresponded, inside to generate the first sprite, second respectively Sprite and third sprite；First sprite, the second sprite and third sprite can correspond to one frame picture of synthesis.

2. projection arrangement as described in claim 1, which is characterized in that the light source part includes white-light emitting component and color Separation assembly, the first band light in white light that the color separated component allows the white-light emitting component to issue is at first Between pass through in section, the second band light in the white light allowed to pass through in second time period, and allow in the white light Third band of light passes through within the third period；The first band light, second band light and third band of light are successively incident to The liquid crystal chip part.

3. projection arrangement as claimed in claim 2, which is characterized in that the color separated component includes allowing the first wave The first optical filter that Duan Guang passes through, the second optical filter for allowing the second band light to pass through and allow the third band of light logical The third optical filter crossed, first optical filter, the second optical filter and third optical filter successively switching position to making the white light It passes through；Or

The color separated component includes beamsplitter element group and timesharing selection element, and the beamsplitter element group is used for from described White light separates the first band light, second band light and third band of light, and the timesharing selection element is set to correspondingly The sub-light road of the first band light, second band light and third band of light, the timesharing selection element is successively in described the Movement in one period, second time period and third period.

4. projection arrangement as described in claim 1, which is characterized in that the light source part includes for issuing the first wave The first light-emitting component of Duan Guang, the second light-emitting component for issuing the second band light and for issuing third band of light Third light-emitting component；First light-emitting component, the second light-emitting component and third light-emitting component successively in the first time period, It is opened in second time period and third period.

5. projection arrangement as described in claim 1, which is characterized in that the projection arrangement further includes being set to the light source part Polarization conversion part between liquid crystal chip part, the polarization conversion part is by the first band light, second band light The polarised light of same polarization direction is converted into third band of light；The liquid crystal chip part includes liquid crystal display panel, is set to institute State the incident polarization element of the incident side of liquid crystal display panel and the outgoing polarization element of the light emission side set on the liquid crystal display panel；Institute The absorption axiss for stating incident polarization element and outgoing polarization element are set as being parallel to each other and allow the first band light, the second wave Duan Guang and the polarised light of third band of light pass through.

6. projection arrangement as claimed in claim 5, which is characterized in that the incident polarization element includes allowing the first wave The first incident polarizer that Duan Guang passes through, the second incident polarizer for allowing the second band light to pass through and allow the third The third incident polarizer that band of light passes through, first incident polarizer, the second incident polarizer and third incident polarizer Successively the first time period, second time period and in the third period switching position to being aligned with the liquid crystal display panel.

7. projection arrangement as claimed in claim 6, which is characterized in that first incident polarizer, the second incident polarizer It is uniformly arranged on turntable with third incident polarizer, in the rotation process of the turntable, first incident polarizer, Two incident polarizers and third incident polarizer are successively aligned with the liquid crystal display panel.

8. projection arrangement as claimed in claim 6, which is characterized in that first incident polarizer, the second incident polarizer It is set on cricoid load-bearing part with third incident polarizer, the liquid crystal display panel is set to the inside of the load-bearing part, described In the rolling process of load-bearing part, first incident polarizer, the second incident polarizer and third incident polarizer successively with institute State liquid crystal display panel alignment.

9. the projection arrangement as described in any one of claim 5 to 8, which is characterized in that the outgoing polarization element includes permitting Perhaps the first outgoing polarization piece that the described first band light passes through, the second outgoing polarization piece for allowing the second band light to pass through and The third outgoing polarization piece for allowing the third band of light to pass through, the first outgoing polarization piece, the second outgoing polarization piece and Three outgoing polarization pieces successively the first time period, second time period and in the third period switching position to the liquid crystal Panels in alignment.

10. such as projection arrangement described in any item of the claim 1 to 8, which is characterized in that the projection arrangement further includes projection Lens group, the projecting lens are mounted on the light emission side of the liquid crystal chip part, are used for first sprite, the second son Picture and third sprite project respectively.