CN105629486B

CN105629486B - 3D projection display system

Info

Publication number: CN105629486B
Application number: CN201410589403.4A
Authority: CN
Inventors: 郭祖强; 王则钦
Original assignee: Shenzhen Appotronics Technology Co Ltd
Current assignee: Shenzhen Appotronics Corp Ltd
Priority date: 2014-10-28
Filing date: 2014-10-28
Publication date: 2019-03-29
Anticipated expiration: 2034-10-28
Also published as: CN105629486A; WO2016066074A1

Abstract

The invention discloses a kind of 3D projection display systems.The system includes: light source, for output timing light, sequential light includes the first sequential light and the second sequential light, wherein, first sequential light includes the first color of light of the second color of light and first band, and the second sequential light includes the first color of light of third color of light and second band；It is divided Multiplexing apparatus, it is arranged in the transmission optical path of sequential light, for sequential light to be divided into the first light along the first optical channel transmission, the second light along the second optical channel transmission and along the third light of third optical channel transmission, it is also used to according to the first light, first group of three primary colours light of the second light and third photogenerated and second group of three primary colours light, wherein, first group of three primary colours light and second group of three primary colours light, two groups of primary lights received for different eyes；And optical modulator, for being modulated to first group of three primary colours light and second group of three primary colours light.Through the invention, achieved the effect that make the colour gamut of the received light of human body right and left eyes close.

Description

3D projection display system

Technical field

The present invention relates to 3D projection arts, in particular to a kind of 3D projection display system.

Background technique

Currently, 3D display technology has been widely used for the places such as cinema, home theater, 3D display technology can will be shown It restores with showing the high fidelity of content, basic principle is the different image of the reception of right and left eyes independently, by brain Superposition forms stereo display effect.In current 3D display, spectral unmixing technology becomes a kind of important technological means, spectrum point Basic principle from technology are as follows: the RGB color separation colour wheel that high-speed rotation is placed inside projector provides different RGB for right and left eyes Color scheme allows right and left eyes to see different pictures by RGB color separation glasses, to form stereoscopic effect.Wherein, RGB is indicated Three primary colours: red (Red), green (Green) and blue (Blue).

Existing color difference formula 3D is one kind of spectral unmixing technology, and goggles with color filter uses red blue optical filter, i.e. left eye Red image is received, right eye receives blue image, and vice versa.This technical pattern is simple, at low cost, but 3D effect is poor.It is existing Stage, a kind of 3D technology of 3D display technology -6P (six-basic-color) laser light source have gradually developed, and light source is what wave band was staggered Two groups of red, green, blue semiconductor lasers, by the different optical filter of right and left eyes on glasses, right and left eyes respectively receive one group it is red, green, Blue three primary colours light, to form 3D display.Which, as light source, has color good using pure laser, the wide advantage of colour gamut, but Its higher cost, dissipation spot technical difficulty is big, simultaneously because right and left eyes colour gamut is different, needs to carry out color school in practical application Just, to reduce color saturation and light efficiency.

The scheme of existing 6P laser light source 3D display technology is as shown in Figure 1,101 be 6P light source, spatial distribution such as Fig. 2 Shown, solid line is left eye laser light source spectrum in Fig. 2, and dotted line is right eye laser light source spectrum.In left eye timing, 6P light source 101 Left eye three primary colours light is issued, a, G left side left comprising R, B are left, and after colour esensitized equipment 102, the left side R is assigned to Digital Micromirror Device (Digital Micromirror Device, referred to as DMD) 103, the left side G are assigned to the left side DMD104, B and are assigned on DMD105, After closing 106 light combination of color device, reached at glasses 108 after camera lens 107 at left-eye image, 108 or so eyeglass of glasses is coated with The optical filter of optical filtering curve as shown in Figure 3, in Fig. 3, red curve is glasses left eye optical filter, and green curve is that glasses right eye is filtered Mating plate.Thus left eye receives left-eye image, and right eye is without image；Similarly, in right eye timing, 6P light source 101 issues right eye three Primary lights, the G right side right comprising R, B are right, and after colour esensitized equipment 102, the right side R is assigned to the right side DMD103, G and is assigned to the right side DMD104, B It is assigned on DMD105, after closing 106 light combination of color device, is reached at glasses 108 after camera lens 107 at eye image, right eye Receive eye image, and left eye handles the timing of primary lights as shown in figure 4, right and left eyes timing image on three DMD without image Stereo display effect is formed by the superposition of human eye.

In Fig. 4, a kind of primary lights of right and left eyes are handled on each DMD, left eye timing is successively carried out with right eye timing, shape At the alternate image of right and left eyes, human eye is superimposed to form 3D rendering.

By selecting two groups of red, green, blue lasers, cooperation glasses right and left eyes filter above-mentioned 6P laser light source 3D display technology Piece successively obtains right and left eyes image, forms stereoscopic display by the superposition of human eye.The program has the advantages that colour gamut is wide, but its Higher cost, green laser are difficult to obtain, and dissipation spot technical difficulty is big, and the colour gamut difference of the received light of right and left eyes is larger.Such as Shown in Fig. 5, since the colour gamut difference of right and left eyes is larger, need to carry out colour correction in practical applications, to reduce color Saturation degree and light efficiency.

Larger problem is distinguished for the colour gamut of the received light of right and left eyes in the prior art, not yet proposes effective solution at present Certainly scheme.

Summary of the invention

The main purpose of the present invention is to provide a kind of 3D projection display systems, are received with solving right and left eyes in the prior art The colour gamut of light distinguish larger problem.

To achieve the goals above, according to an aspect of the invention, there is provided a kind of 3D projection display system.According to this The 3D projection display system of invention includes: light source, output timing light is used for, when the sequential light includes the first sequential light and second Sequence light, wherein first sequential light includes the first color of light of the second color of light and first band, the second sequential light packet Include the first color of light of third color of light and second band, wherein first color of light, second color of light and described Three color of light are respectively different colours primary lights, and second color of light includes the continuous third band of light of wave band, the 4th wave band Light and the 5th band of light, the third color of light include continuous 6th band of light of wave band, the 7th band of light and the 8th band of light； It being divided Multiplexing apparatus, is arranged in the transmission optical path of the sequential light, being passed for being divided into the sequential light along the first optical channel Defeated the first light, the second light along the second optical channel transmission and the third light along third optical channel transmission, wherein second face Coloured light includes the continuous third band of light of wave band, the 4th band of light and the 5th band of light, and the third color of light includes that wave band connects Continuous the 6th band of light, the 7th band of light and the 8th band of light, first light include the first color of light of the first band With the first color of light of the second band, second light includes the 4th band of light and the 7th band of light, described Third light includes the third band of light, the 5th band of light, the 6th band of light and the 8th band of light, and described point Photosynthetic electro-optical device is also used to according to first light, first group of three primary colours light of second light and the third photogenerated and second Group three primary colours light, wherein first group of three primary colours light and two groups received for different eyes of second group of three primary colours light Primary lights, first group of three primary colours light include the first color of light, the 4th band of light and the 7th band of light of the first band, Second group of three primary colours light include the first color of light of the second band, the third band of light, the 5th band of light, 6th band of light and the 8th band of light；And optical modulator, for first group of three primary colours light and second group Three primary colours light is modulated, and modulated light is reflexed to the light splitting Multiplexing apparatus, is closed by the light splitting Multiplexing apparatus It is exported after light.

Further, color-separation and color-recombination film is equipped on the light splitting Multiplexing apparatus, the color-separation and color-recombination film includes reflectance coating With dual band pass filter coating, the reflectance coating be used for reflect the first band the first color of light and the second band first Color of light, the dual band pass filter coating transmit the third for reflecting the 4th band of light and the 7th band of light Band of light, the 5th band of light, the 6th band of light and the 8th band of light, wherein the sequential light passes through described Reflectance coating and the dual band pass filter coating generate first group of three primary colours light and second group of three primary colours light.

Further, the wavelength of the 4th band of light and is greater than third band of light less than the wavelength of the 5th band of light Wavelength；The wavelength of 7th band of light less than the 8th band of light wavelength, and be greater than the 6th band of light wavelength.

Further, the light splitting Multiplexing apparatus includes: the first prism, the second prism and third prism, first rib Mirror, second prism and the third prism successively sequentially arrange, and the sequential light passes sequentially through first prism, described Second prism and the third prism, wherein the reflectance coating is equipped between first prism and second prism, it is described The dual band pass filter coating is equipped between second prism and the third prism.

Further, the optical modulator includes: the first Digital Micromirror Device, the second Digital Micromirror Device and third number Micro mirror element, wherein the first face that the reflectance coating reflects the first band is arranged in first Digital Micromirror Device On the direction of first color of light of coloured light and the second band, for the first color of light and described to the first band First color of light of two wave bands is modulated, and second Digital Micromirror Device, which is arranged, reflects institute in the dual band pass filter coating On the direction for stating the 4th band of light and the 7th band of light, for being carried out to the 4th band of light and the 7th band of light Modulation, third Digital Micromirror Device setting the third band of light, the 5th band of light, the 6th band of light and In the exit direction of 8th band of light, for the third band of light, the 5th band of light, the 6th band of light It is modulated with the 8th band of light.

Further, the reflectance coating is also used to reflect a part of wave band of the third band of light, the dual band pass filter Light film transmits another part wave band of the third band of light；Alternatively, the reflectance coating is also used to reflect the 8th band of light A part of wave band, the dual band pass filter coating transmits another part wave band of the 8th band of light.

Further, the light source includes: laser light source, for emitting the first color of light of the first band and described First color of light of second band；Colour wheel, be arranged in the first band the first color of light and the second band first In the direction of the launch of color of light, the colour wheel is equipped with fluorescent powder, and the fluorescent powder includes the second color fluorescence powder and third face Color fluorescent powder, wherein the second color fluorescence powder is for generating institute under the excitation of the first color of light of the first band The second color of light is stated, the third color fluorescence powder is used under the excitation of the first color of light of the second band described in generation Third color of light；First color of light of first band described in the second color fluorescence powder transmissive portion, the third color are glimmering First color of light of second band described in light powder transmissive portion.

Further, the light source includes: first laser light source, for emitting the first color of light of the first band； Second laser light source, for emitting the first color of light of the first band and the first color of light of the second band；First Colour wheel is arranged on the light emitting direction of the first laser light source, first colour wheel be equipped with the second color fluorescence powder and Third color fluorescence powder, first colour wheel is for generating described second under the excitation of the first color of light of the first band Color of light and the third color of light；Second colour wheel is arranged on the light emitting direction of the second laser light source, described second Colour wheel is equipped with scattering powder, and second colour wheel is used for the to the first color of light of the first band and the second band One color of light is scattered depolarization, wherein the second laser light source emits the first color of light and the institute of the first band State the second color fluorescence powder and the third on the switching frequency and first colour wheel of the first color of light of second band The switching frequency of color fluorescence powder is identical.

Further, the first laser light source and the second laser light source are all made of semiconductor laser.

Further, the light source includes: laser light source, for emitting the first color of light of the first band and described First color of light of second band；LED light source, for emit include the third wave band, the 4th wave band and the 5th wave band the Second colors light, the LED light source are also used to emit the third color comprising the 6th wave band, the 7th wave band and the 8th wave band Light.

Further, the 3D projection display system further include: the first condenser lens is arranged in the first laser light source Between first colour wheel, the first color of light for emitting the first laser light source focuses on first colour wheel On；Second condenser lens is arranged between the second laser light source and second colour wheel, is used for the second laser light First color of light of source transmitting focuses on second colour wheel.

Further, the 3D projection display system further include: the light of first colour wheel is arranged in the first collecting lens On outbound course；Second collecting lens are arranged on the light output direction of second colour wheel；First reflecting mirror, for reflecting First color of light of the first band that second collecting lens are collected；Multiplexing apparatus, the Multiplexing apparatus are described for reflecting First color of light of first band and the first color of light of the second band, and transmit second color of light and the third Color of light obtains mixed light.

Further, the 3D projection display system further include: square rod is arranged in the direction of the launch of the mixed light, For carrying out dodging to the mixed light；Relay lens is arranged on the light output direction of the square rod；Second reflection Mirror is arranged on the light output direction of the relay lens, for reflecting the light of the relay lens output；Total reflection prism, Light total reflection for reflecting second reflecting mirror is to the prism for being coated with the color-separation and color-recombination film.

Further, the 3D projection display system further include: projection lens, it is defeated for receiving the optical modulator control First group of three primary colours light and second group of three primary colours light out；And glasses, the glasses include left eyeglass lens and right eye Eyeglass, wherein the left eyeglass lens are for transmiting first group of three primary colours light, and the right eye eyeglass is for transmiting described second Group three primary colours light.

Further, first color of light is blue light, and second color of light is green light, and the third color of light is red Light；Alternatively, first color of light is green light, second color of light is feux rouges, and the third color of light is blue light；Alternatively, First color of light is feux rouges, and second color of light is blue light, and the third color of light is green light.

Further, after the sequential light first passes through the reflectance coating progress reflection beam splitting, the light of the reflectance coating transmission It is divided using the dual band pass filter coating.

According to embodiments of the present invention, in light splitting Multiplexing apparatus, sequential light is generated by reflectance coating and dual band pass filter coating First group of three primary colours light and second group of three primary colours light, wherein first group of three primary colours light and second group of three primary colours light are different eyes The two groups of primary lights received, first group of three primary colours light include the first color of light, the 4th band of light and the 7th wave of first band Duan Guang, second group of three primary colours light include the first color of light, third band of light, the 5th band of light, the 6th band of light of second band With the 8th band of light.So that the colour gamut of first group of three primary colours light and second group of three primary colours light relatively, solves existing The colour gamut of the received light of right and left eyes distinguishes larger problem in technology, has reached and the colour gamut of the received light of human body right and left eyes is connect Close effect.

Detailed description of the invention

The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:

Fig. 1 is the structural schematic diagram of 3D projection display system according to prior art；

Fig. 2 is the spectral distribution curve schematic diagram of 3D projection display system according to prior art；

Fig. 3 is the optical filtering curve schematic diagram of 3D projection display system according to prior art；

Fig. 4 is the timing diagram of the primary lights of 3D projection display system according to prior art；

Fig. 5 is the spatial distribution schematic diagram of 3D projection display system according to prior art；

Fig. 6 is the structural schematic diagram of 3D projection display system according to a first embodiment of the present invention；

Fig. 7 a to Fig. 7 c is the spectral schematic of sequential light according to an embodiment of the present invention；

Fig. 8 is the structural schematic diagram of prism and DMD according to an embodiment of the present invention；

Fig. 9 is the structural schematic diagram of preferred 3D projection display system according to a second embodiment of the present invention；

Figure 10 is to show the colour wheel schematic diagram of 3D projection display system shown in Fig. 9；

Figure 11 is to show the light sequential figure of the colour wheel output of 3D projection display system shown in Fig. 9；

Figure 12 is to show the reflectance curves of the color-separation and color-recombination film of 3D projection display system shown in Fig. 9；

Figure 13 is to show the right and left eyes timing diagram of 3D projection display system shown in Fig. 9；

Figure 14 is to show the DMD processing timing diagram of 3D projection display system shown in Fig. 9；

Figure 15 is to show the spatial distribution schematic diagram of 3D projection display system shown in Fig. 9；

Figure 16 is the structural schematic diagram of 3D projection display system according to a third embodiment of the present invention；

Figure 17 is to show the colour wheel schematic diagram of 3D projection display system shown in Figure 16；

Figure 18 is to show the light sequential figure of the colour wheel output of 3D projection display system shown in Figure 16；

Figure 19 is a kind of reflectance curves of preferred color-separation and color-recombination film according to an embodiment of the present invention；

Figure 20 is the spectrogram after the color-separation and color-recombination film light splitting of 3D projection display system according to an embodiment of the present invention；

Figure 21 is the right and left eyes timing diagram of 3D projection display system according to an embodiment of the present invention；

Figure 22 is the DMD processing timing diagram of 3D projection display system according to an embodiment of the present invention；And

Figure 23 is the spatial distribution schematic diagram of 3D projection display system according to an embodiment of the present invention.

Specific embodiment

It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work It encloses.

It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, " Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein.In addition, term " includes " and " tool Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, contain a series of system of components, Product or equipment those of are not necessarily limited to be clearly listed component, but may include be not clearly listed or for these The intrinsic other components of system, product or equipment.

Fig. 6 is the structural schematic diagram of 3D projection display system according to a first embodiment of the present invention.As shown in fig. 6, the 3D Projection display system includes: light source 601, light splitting Multiplexing apparatus 602 and optical modulator 603.

Light source 601 is used for output timing light, which includes the first sequential light and the second sequential light, wherein when first Sequence light includes the first color of light of the second color of light and first band, and the second sequential light includes third color of light and second band First color of light, wherein the first color of light, the second color of light and third color of light are respectively different colours primary lights, the second face Coloured light includes the continuous third band of light of wave band, the 4th band of light and the 5th band of light, and third color of light includes that wave band is continuous 6th band of light, the 7th band of light and the 8th band of light.

Light source 601, which can be LED light source, to export the first sequential light at different times with laser light source, light source 601 With the second sequential light.First band is different wave bands, the first color of light, the second color of light and third color of light from second band Respectively different colours primary lights, can be and be followed successively by blue and green light and feux rouges, are also possible to green light, feux rouges and blue light, may be used also To be feux rouges, blue light and green light.

Light splitting Multiplexing apparatus 602 is arranged in the transmission optical path of sequential light, for being divided into sequential light along the first optical channel The first light, the second light along the second optical channel transmission and the third light along third optical channel transmission of transmission, wherein the second color Light includes the continuous third band of light of wave band, the 4th band of light and the 5th band of light, and third color of light includes wave band continuous Six band of light, the 7th band of light and the 8th band of light, the first light include first band the first color of light and second band One color of light, the second light include the 4th band of light and the 7th band of light, and third light includes third band of light, the 5th band of light, the Six band of light and the 8th band of light, light splitting Multiplexing apparatus are also used to according to the first light, the second light and first group three of third photogenerated Primary lights and second group of three primary colours light, wherein first group of three primary colours light and second group of three primary colours light are received for different eyes Two groups of primary lights, first group of three primary colours light include the first color of light, the 4th band of light and the 7th band of light of first band, and second Group three primary colours light includes the first color of light, third band of light, the 5th band of light, the 6th band of light and the 8th wave band of second band Light.

As shown in Fig. 7 a to 7c, in coordinate system shown in Fig. 7 a to 7c, ordinate indicates luminous intensity, and abscissa indicates wave It is long.As shown in Figure 7a, the first sequential light includes the first color of light of the second color of light and first band, and the second sequential light includes the First color of light of three color of light and second band, wherein the first color of light is blue, blue light B1 including first band and the The blue light B2 of two wave bands；Second color of light is green light, including third band of light G2, the 4th band of light G1 and the 5th band of light G3； Third color of light is feux rouges, including the 6th band of light R2, the 7th band of light R1 and the 8th band of light R3.

In Fig. 7 b and Fig. 7 c, solid line indicates the first sequential light, and dotted line indicates the second sequential light.As shown in Figure 7b, the first face Coloured light is feux rouges, the feux rouges R2 of the feux rouges R1 including first band and second band, and the second color of light is blue light B, third color Light is green light G.As shown in Figure 7 c, the first color of light be green light, the green light G2 of the green light G1 including first band and second band, Second color of light is feux rouges R, and third color of light is blue light B.

Second color of light includes the continuous third band of light of wave band, the 4th band of light and the 5th band of light, wherein third wave Duan Guang has third wave band, and the 4th band of light has the 4th wave band, and the 5th band of light has the 5th wave band, third wave band, the 4th Wave band and the 5th wave band can be continuous wave band, for example, the maximum wavelength of third wave band is equal with the minimum wavelength of the 4th wave band, The maximum wavelength of 4th wave band is equal with the minimum wavelength of the 5th wave band or the maximum wavelength of the 5th wave band and the 4th wave band Minimum wavelength is equal, and the maximum wavelength of the 4th wave band is equal with the minimum wavelength of third wave band.Third color of light includes that wave band connects Continuous the 6th band of light, the 7th band of light and the 8th band of light, wherein the 6th band of light, the 7th band of light and the 8th band of light Successively similar to third band of light, the 4th band of light and the 5th band of light, i.e., the wavelength of the 4th band of light is less than the 5th band of light Wavelength, and be greater than third band of light wavelength；The wavelength of 7th band of light less than the 8th band of light wavelength, and be greater than the 6th The wavelength of band of light.

Specifically, color-separation and color-recombination film can be equipped on light splitting Multiplexing apparatus 602, color-separation and color-recombination film includes reflectance coating and double Bandpass filters, reflectance coating is for reflecting the first color of light of first band and the first color of light of second band, dual band pass filter Light film transmits third band of light, the 5th band of light, the 6th band of light and for reflecting the 4th band of light and the 7th band of light Eight band of light, wherein sequential light generates first group of three primary colours light and second group of three primary colours by reflectance coating and dual band pass filter coating Light, wherein two groups of primary lights that first group of three primary colours light and second group of three primary colours light are received by different eyes, first group of three base Coloured light includes the first color of light, the 4th band of light and the 7th band of light of first band, and second group of three primary colours light includes the second wave The first color of light, third band of light, the 5th band of light, the 6th band of light and the 8th band of light of section.

Light splitting Multiplexing apparatus 602 can use three-chip type Philips prism, wherein reflectance coating is for reflecting the first color Light, the first color of light including first band and second band transmit the second color of light and third color of light.Dual band pass filter coating Then for reflecting the 4th band of light and the 7th band of light, and transmit third band of light, the 5th band of light, the 6th band of light and the 8th Band of light.

Sequential light can first pass through after reflectance coating reflects the first color of light, then the light that reflectance coating is transmitted is by biobelt Logical filter coating is divided, for example, the first sequential light first passes through the first color of light that reflectance coating reflects first band, is transmitted Second color of light, the second color of light reflect the 4th band of light by dual band pass filter coating, and transmit third band of light and the Five band of light, thus the first color of light of the first band after being successively divided, the 4th band of light and third band of light and 5th band of light；Second sequential light is along identical path transmission, the first color of light of the second band after being successively divided, Seven band of light and the 6th band of light and the 8th band of light.

Sequential light can also first pass through after dual band pass filter coating is divided, then the light that dual band pass filter coating is transmitted passes through It crosses reflectance coating to be divided, which has the first color of light of reflection, transmits the characteristic of other color of light.For example, when first Sequence light first passes through dual band pass filter coating and reflects the 4th band of light, and transmits the first color of light of first band, third wave band Light and the 5th band of light, using the first color light transmission third band of light and the 5th wave band of reflectance coating reflection first band Light, thus the 4th band of light, the first color of light of first band and third band of light and the 5th wave after being successively divided Duan Guang；Seven band of light/second band first color of second sequential light along identical path transmission, after being successively divided Light and the 6th band of light and the 8th band of light.

Sequential light generates at least two groups three primary colours light, including first group of three primary colours light and second group of three primary colours after light splitting Light, first group of three primary colours light include the first color of light, the 4th band of light and the 7th band of light of first band, second group of three primary colours Light includes the first color of light, third band of light, the 5th band of light, the 6th band of light and the 8th band of light of second band.First Group three primary colours light and second group of three primary colours light, two groups of primary lights received for different eyes, wherein first group of three primary colours light be The received three primary colours light of first eye institute of human eye, second eyes received three base of second group of three primary colours light for human eye Coloured light.

First group of three primary colours light can be the primary lights that the left eyeglass lens of glasses 605 are transmissive to, second group of three primary colours Light can be the primary lights that the right eye eyeglass of glasses 605 is transmissive to.Due in first group of three primary colours light, the 4th band of light is The light of the intermediate wave band intercepted from the second color of light, the 7th band of light are the intermediate wave band intercepted from third color of light Light, so that the colour gamut of first group of three primary colours light and second group of three primary colours light is relatively, so that two eyes of human body are connect The colour gamut of the light received is relatively.

Optical modulator 603 is used to be modulated first group of three primary colours light and second group of three primary colours light, and will be modulated Light reflexes to light splitting Multiplexing apparatus 602, exports after being divided 602 light combination of Multiplexing apparatus.

Optical modulator 603 can be Digital Micromirror Device, for first group of three primary colours light and second group of three primary colours light into Row image modulation, the light after re-modulation are re-reflected on light splitting Multiplexing apparatus 602, carry out light combination by light splitting Multiplexing apparatus 602 After export, due to sequential light include different moments output the first sequential light and the second sequential light, through light splitting light combination Light after 602 light combination of device still includes the light of two timing.

According to embodiments of the present invention, sequential light generates first group of three primary colours light and second group of three base by light splitting Multiplexing apparatus Coloured light, wherein two groups of primary lights that first group of three primary colours light and second group of three primary colours light are received by different eyes, first group three Primary lights include the first color of light, the 4th band of light and the 7th band of light of first band, and second group of three primary colours light includes second The first color of light, third band of light, the 5th band of light, the 6th band of light and the 8th band of light of wave band.So that first group The colour gamut of three primary colours light and second group of three primary colours light relatively, solves the colour gamut area of the received light of right and left eyes in the prior art Not larger problem has achieved the effect that make the colour gamut of the received light of human body right and left eyes close.

The 3D projection display system of the embodiment of the present invention further include: projection lens 604 and glasses 605, projection lens 604 are used First group of three primary colours light and second group of three primary colours light are exported in receiving optical modulator control.Glasses 605 include left eyeglass lens and the right side Spectacle lens, wherein left eyeglass lens are for transmiting first group of three primary colours light, and right eye eyeglass is for transmiting second group of three primary colours light.It throws The light received is imaged in shadow camera lens 604, and cooperation glasses make left eyeglass lens generate left-eye image, and right eye eyeglass generates right Eye image, to form 3D imaging.

Preferably, as shown in figure 8, light splitting Multiplexing apparatus 602 includes: the first prism, the second prism and third prism, first Prism, the second prism and third prism successively sequentially arrange (in Fig. 8 from right to left), and mixed light passes sequentially through the first prism, the Two prisms and third prism, arrow direction in light splitting Multiplexing apparatus 602 as shown in Figure 8.Between first prism and the second prism Equipped with reflectance coating, dual band pass filter coating is equipped between the second prism and third prism.Above-mentioned prism can use Philips rib Mirror.

Reflectance coating is equipped between first prism, two faces adjacent with the second prism, the first prism is adjacent with the second prism Reflectance coating 607 is equipped between two faces, reflectance coating 607 fits for reflecting the first color of light, the second prism with third prism Face be equipped with dual band pass filter coating 608, dual band pass filter coating 608 is used to reflect the 4th band of light in the second color of light, and The 7th band of light in the third band of light and the 5th band of light in the second color of light, and reflection third color of light is transmitted, and Transmit the 6th band of light and the 8th band of light in third color of light.

Specifically, it is successively arranged reflectance coating 607 and dual band pass filter coating 608 between three pieces prism, is mutually tied with light source light spectrum It closes, reflectance coating 607 can reflect blue light, and dual band pass filter coating 608 can be used for reflecting the intermediate band part of green light and feux rouges Light, transmit green light and feux rouges other parts light.Each color of light after light splitting is re-reflected into after light modulator modulates It is divided on Multiplexing apparatus 602 and carries out light combination by color-separation and color-recombination film, output to projection lens is imaged.

According to embodiments of the present invention, using three-chip type prism as light splitting Multiplexing apparatus, so that different prism outgoing Three parts light after light splitting is simple to carry out light splitting and light combination process, structure without different components.

As shown in figure 8, in the embodiment of the present invention, optical modulator may include: the first Digital Micromirror Device (i.e. DMD6031), the second Digital Micromirror Device (i.e. DMD6032) and third Digital Micromirror Device (i.e. DMD6033), wherein DMD6031 is arranged in reflectance coating 607 and reflects in the light exit direction of i.e. the first prism on the direction of the first color of light, for pair First color of light of the first color of light of the first light, that is, first band and second band is modulated；DMD6032 is arranged in biobelt Logical filter coating 608 reflects on the direction of the 4th band of light and the 7th band of light in the light exit direction of i.e. the second prism, is used for Second light i.e. the 4th band of light and the 7th band of light is modulated；DMD6033 setting transmits the in dual band pass filter coating 608 Three light, that is, third band of light, the 5th band of light, the 6th band of light and the 8th band of light direction on i.e. third prism light outgoing On direction, the exit direction on the direction of third band of light, the 5th band of light, the 6th band of light and the 8th band of light that is to say On, for being modulated to the third band of light of transmission, the 5th band of light, the 6th band of light and the 8th band of light.

DMD6031, DMD6032 and DMD6033 are successively set on the light of the first prism, the second prism and third prism Exit direction, for receiving the primary lights emitted from prism, in order to be modulated to it.Specifically, can be by On two kinds of blu-ray reflections to DMD6031 of timing, the second prism uses green light band and red spectral band dual band pass filter coating, green light Part reflection and fractional transmission occur with feux rouges, the green light and feux rouges for forming two groups of timing are assigned to DMD6032 and DMD6033 On.

Fig. 9 is the structural schematic diagram of 3D projection display system according to a second embodiment of the present invention.The 3D of the embodiment is thrown Shadow display system can be used as a kind of preferred embodiment of the 3D projection display system of above-described embodiment.

As shown in figure 9, light source includes: first laser light source 901, for emitting the first color of light of first band；Second Laser light source 902, for emitting the first color of light of first band and the first color of light of second band；First colour wheel 905, if It sets on the light emitting direction of first laser light source, the first colour wheel 905 is equipped with the second color fluorescence powder and third color fluorescence Powder, the first colour wheel 905 under the excitation of the first color of light of first band for generating the second color of light and third face of timing Coloured light；Second colour wheel 906 is arranged on the light emitting direction of second laser light source, and the second colour wheel 906, which is equipped with, scatters powder, and second First color of light of the second band that colour wheel 906 is used to emit second laser light source 902 is scattered depolarization, wherein the Dual-laser light source 902 emits the switching frequency and the first color of the first color of light of first band and the first color of light of second band It is identical with the switching frequency of third color fluorescence powder to take turns upper second color fluorescence powder.

According to embodiments of the present invention, in order to facilitate the selection of laser light source, the wave of one group of light of second laser light source output Length is close with the optical wavelength of first laser light source output, i.e. the first color of light of first band.

Further, first laser light source 901 and second laser light source 902 are all made of semiconductor laser, wherein second Laser light source 902 includes the semiconductor laser of two groups of different-wavebands.A semiconductor laser in second laser light source 902 It is identical laser with the semiconductor laser in first laser light source 901.In this way, facilitating the selection of laser.

As shown in figure 9,3D projection display system further include: the first condenser lens 903 is arranged in first laser light source 901 And first between colour wheel 905, the first color of light for emitting first laser light source 901 focuses on the first colour wheel 905；The Two condenser lenses 904 are arranged between second laser light source 902 and the second colour wheel 906, for sending out second laser light source 902 The first color of light penetrated focuses on the second colour wheel 906.

As shown in figure 9,3D projection display system further include: the light of the first colour wheel 905 is arranged in the first collecting lens 917 On outbound course；Second collecting lens 918 are arranged on the light output direction of the second colour wheel 906；First reflecting mirror 910, is used for Reflect the first color of light of the first band of the second collecting lens 918 collection；Multiplexing apparatus 909, Multiplexing apparatus 909 is for reflecting First color of light of first band and the first color of light of second band, and the second color of light and third color of light are transmitted, it obtains Mixed light.Wherein, the first color of light of the second colour wheel 906 output reaches the first reflecting mirror 910 by the first collecting lens 917, First reflecting mirror 910 is used to for the first color of light being reflected into Multiplexing apparatus 909, the second color of light of the first colour wheel 905 output Reaching Multiplexing apparatus 909 by the first collecting lens 917 with third color of light, Multiplexing apparatus 909 passes through the first color of light of reflection, And the second color of light of transmission and third color of light to carry out light combination to the first color of light, the second color of light and third color of light, obtain To sequential light.

As shown in figure 9,3D projection display system further include: square rod 911 is arranged in the direction of the launch of mixed light, is used for Dodging is carried out to mixed light；Relay lens 912 is arranged on the light output direction of square rod 911；Second reflecting mirror 913, if It sets on the light output direction of relay lens 912, for reflecting the light of the output of relay lens 912；Total reflection prism 914, is used for On the light total reflection to the prism 915 for being coated with color-separation and color-recombination film that second reflecting mirror 913 is reflected.

Specifically, using the first color of light as blue light, the second color of light be green light, the second color of light be feux rouges for, to this Inventive embodiments are described.

As shown in figure 9, the 3D projection display system includes first laser light source 901 and second laser light source 902, the two is equal For blue semiconductor laser, the light that first laser light source 901 issues focuses on the first colour wheel after the first condenser lens 903 At 905, the light that second laser light source 902 issues is focused on after the second condenser lens 904 at second colour wheel 906, the first color Wheel 905 and second colour wheel 906, as shown in Figure 10, the first colour wheel 905 are equipped with two sections of fluorescent powders, respectively green emitting phosphor and red Color fluorescent powder, the green fluorescence and red fluorescence for generating timing are excited by first laser light source 901, and the second colour wheel 906 is equipped with whole The scattering powder of section, is scattered depolarization for the blue laser that second laser light source 902 issues, second laser light source 902 includes The blue laser of two groups of different-wavebands, for convenience, wherein one group can choose indigo plant identical with 901 wave band of first laser light source Light laser, second laser light source 902 carry out two kinds with frequency identical with green light on the first colour wheel 905 and feux rouges switching frequency The switching of blue light, the light sequential that two groups of light sources are exported from colour wheel is as shown in figure 11, and green light G is synchronous with blue light B1, feux rouges R and blue light B2 is synchronous.

The light exported from the first colour wheel 905 reaches from Multiplexing apparatus 909 by the first collecting lens 907, from the second colour wheel 906 output light by the first reflecting mirror 910 reflection after reach Multiplexing apparatus 909 at, Multiplexing apparatus 909 have transmission green light and Feux rouges reflects the effect of blue light, and thus two-beam synthesis is a branch of enters square rod 911, through relay lens 912, reflection after even light Mirror 913 reaches at TIR prism 914, and TIR prism 914 is totally reflected it, is incident on color-separation and color-recombination prism 915, color-separation and color-recombination Prism 915 includes three pieces prism, is placed with DMD916, DMD917, DMD918 after three pieces prism, is coated with respectively between three pieces prism Color-separation and color-recombination film 919 and 920, combines with light source light spectrum, and the reflectivity curve of color-separation and color-recombination film 919 and 920 is as shown in figure 12, in figure Solid line represents the spectrum of the first timing, and dotted line represents the spectrum of the second timing, and reflectance coating 919 reflects blue light, and 920 be dual band pass film Layer, green light and red light portion reflection, fractional transmission.

After light splitting, spectral schematic is as shown in figure 13, and under the effect of dual band pass filter coating 920, green light is divided into G1 And G2+G3, feux rouges are divided into R1 and R2+R3.Back reflection light combination is modulated by DMD, is ultimately imaged by camera lens 921.On three DMD The timing for handling light is as shown in figure 14, and 922 optical filter coating of glasses shown in Figure 13 combines, and obtains its right and left eyes primary lights Timing, wherein grey parts represent left eye primary lights, and white portion represents right eye primary lights, using this embodiment of the present invention, make Existing left eye primary lights in each timing are obtained, and there are right eye primary lights, thus can guarantee that each eye light intensity change intensity eases up, Reduce the degree of fatigue of eyes.Simultaneously because right and left eyes three primary colours chromaticity coordinates is almost the same, colour gamut using dual band pass optical filtering plated film It is close, REC.709 standard is all basically reached, as shown in figure 15, the method makes stereoscopic display color true to nature, in algorithm process It is not required to excessively be corrected, light efficiency is high.

Optionally, the light source of the embodiment of the present invention includes laser light source and LED light source, wherein laser light source is for emitting First color of light of first band and the first color of light of second band；LED light source includes third wave band, the 4th wave for emitting Second color of light of section and the 5th wave band, LED light source be also used to emit comprising the 6th wave band, the 7th wave band and the 8th wave band the Three color of light.

Figure 16 is the structural schematic diagram of 3D projection display system according to a third embodiment of the present invention.The 3D of the embodiment is thrown Shadow display system can be used as a kind of preferred embodiment of the 3D projection display system of above-described embodiment.

In the embodiment of the present invention, light source includes laser light source 901 and colour wheel 905.The laser light source 901 and color of the embodiment Wheel 905 is different from first laser light source 901 shown in Fig. 9 and 905 function of colour wheel.It will be described in detail below.

Laser light source 901 can use laser, for emit first band the first color of light and second band the One color of light.First color of light of first band and the first color of light of second band are as exciting light, for exciting colour wheel 905 Generate two kinds of sequential lights.Specifically, laser light source 901 is used for the first color of light and second in different moments output first band First color of light of wave band.

Colour wheel 905 is arranged in the direction of the launch of the first color of light, and colour wheel 905 is equipped with fluorescent powder, which can be with Including the second color fluorescence powder and third color fluorescence powder, wherein the second color fluorescence powder is used for the first face in first band The second color of light is generated under the excitation of coloured light, third color fluorescence powder is used for raw under the excitation of the first color of light of second band At third color of light；First color of light of the second color fluorescence powder transmissive portion first band, third color fluorescence powder transmissive portions Divide the first color of light of second band.

Colour wheel 905 is used to generate the first sequential light under the excitation of the first color of light of first band, and in the second wave The second sequential light is generated under the excitation of first color of light of section.

Colour wheel 905 can be one or more, and correspondingly, laser light source 901 is also possible to one group or multiple groups, In, when colour wheel 905 is one, the two sections of fluorescent powders i.e. fluorescent powder of the second color of light and third color are equipped on colour wheel 905 The fluorescent powder of light, wherein laser light source 901 launches first color of light of two groups of wave bands, wherein the first color of first band The fluorescent powder of a part the second color of light of excitation of light, exports the second color of light, another part is still the first face of first band Coloured light obtains the first sequential light；The fluorescent powder of a part excitation third color of light of first color of light of second band, output the Three color of light, another part are still the first color of light of second band, obtain the second sequential light.

When colour wheel 905 is two, one of colour wheel can be equipped with two sections of fluorescent powders, the fluorescence of one section of second color Powder, the other end are the fluorescent powder of third color, and whole section of scattering powder can be equipped on another colour wheel.Correspondingly, laser light source 901 be also two, and two laser light sources 901 emit two group of first color of light respectively, are respectively used to excite above-mentioned two colour wheel 905。

According to embodiments of the present invention, using laser light source excitated fluorescent powder generate sequential light, relative to use LED light source, Its brightness is high, and light efficiency is high.

In addition, being different from the pure laser light source 3D of existing color difference formula 3D and existing 6P, the present invention uses laser light source It excites colour wheel to generate sequential light, avoids the ropy disadvantage of traditional colour differential 3D rendering, due to using for emitting a kind of face The light source of coloured light reduces the cost of 3D projection display system, and structure letter relative to the pure laser light source 3D of existing 6P Single, cost is easy to control.

The difference of the 3D projection display system of the embodiment of the present invention shown in Figure 16 and 3D projection display system shown in Fig. 9 exists In two groups of light sources are replaced with one group of light source.

Specifically, using the first color of light as blue light, the second color of light is green light, and third color of light is laser for feux rouges Light source 901 is the Several problems of evaluating laser beam quality of unstable of two groups of different-wavebands, and colour wheel 905 is third colour wheel, as shown in figure 17, is equipped with two sections The blue light B1 of fluorescent powder, respectively green emitting phosphor and red fluorescence powder, the first color light laser transmitting of first band enters It is mapped on green emitting phosphor, is partly absorbed and is converted into green light, part is not absorbed still as blue light B1；First face of second band The blue light B2 of coloured light laser transmitting is incident on red fluorescence powder, is partly absorbed and is converted into feux rouges, and part is not absorbed still For blue light B2.The blue laser switch speed of two groups of wave bands is consistent with green light on colour wheel and feux rouges switch speed, colour wheel The sequential light of output is as shown in figure 18, the function of 3D projection display system rest part component component same as shown in Figure 9 It can be identical.

According to embodiments of the present invention, two groups of light sources are reduced to one group of light source, save system space and cost.

Optionally, reflectance coating is also used to reflect a part of wave band of third band of light, and dual band pass filter coating transmits third wave Another part wave band of Duan Guang.

Specifically, using the first color of light as blue light, the second color of light is green light, and third color of light is feux rouges, wherein third For band of light is the light of green light short wavelength part, after light splitting, spectral schematic is as shown in figure 20, includes the by green light The green light G1 and the 5th wave band G4 of the green lights (including G2 and G3) of three wave bands, the 4th wave band, feux rouges includes the feux rouges of the 6th wave band The feux rouges R3 of R2, the feux rouges R1 of the 7th wave band and the 8th wave band, wherein reflectance coating is used to reflect the blue light B1 of first band, the The blue light B2 and green light G2 of two wave bands, dual band pass filter coating are used to reflect the feux rouges of the 4th wave band green light and the 7th wave band, and thoroughly Penetrate remaining light.

It should be noted that third band of light is also possible to the long wavelength part of green light in the example above.In addition, when the One color of light is feux rouges, and the second color of light is blue light, and when third color of light is green light, third band of light can be the shortwave of blue light Long or long wavelength part light；When the first color of light is green light, the second color of light is feux rouges, when third color of light is blue light, Third band of light can be the short wavelength of feux rouges or the light of long wavelength part；Other situations are similar with above situation, here not It repeats again.

According to embodiments of the present invention, reflectance coating is also used to reflect a part of wave band of third band of light, dual band pass filter coating Another part wave band of third band of light is transmitted, in order to which left eye primary lights existing in each timing have right eye primary lights again, To can guarantee that each eye light intensity change intensity eases up, the degree of fatigue of eyes is reduced.

Specifically, the color-separation and color-recombination film 607 and 608 on prism 603 becomes as shown in figure 19, and anti-blue Light Film is to green light direction It moves, reflects a part of green light, corresponding, green light band logical wave band moves a distance, feux rouges band logical wave band to long-wave band direction It is constant.The first sequential light and the second sequential light spectrum after being divided is as shown in figure 20, and each band of light after light splitting is incident on On three DMD, the left and right glasses optical filter shown in Figure 21 is combined, and obtains that its timing is as shown in figure 22, and grey parts represent Left eye primary lights, white portion represent right eye primary lights, make existing left eye primary lights in each timing using the method, and have Right eye primary lights reduce the degree of fatigue of eyes to can guarantee that each eye light intensity change intensity eases up.Specifically, spectrum Distribution map is as shown in figure 23.

The present embodiment by left eye blue light in conjunction with the green light of part so that human eye feels that partially purple left eye indigo plant laser connects to human eye The REC.709 blue light received is close while also closer with right eye indigo plant laser, in green light and red light portion, due to using biobelt Logical optical filtering plated film, so that right and left eyes green light and feux rouges are close, right and left eyes colour gamut is close, and has all reached REC.709 standard 110% or more, so that stereoscopic display color is more life-like, and there is high photosynthetic efficiency.

Preferably, the first color of light of the embodiment of the present invention is blue light, and the second color of light is green light, and third color of light is red Light.Correspondingly, light source uses blue semiconductor laser, since the light source of the embodiment of the present invention is blue semiconductor laser, Structure is simple, and cost is easy to control, and 6P formula 3D two groups of RGB semiconductor lasers of selection, at high cost, system complex, and Red green laser low efficiency, pure laser light source dissipation spot technical difficulty are big, it is even more important that the invention enables right and left eyes colour gamuts Close, 3D effect is true to nature, and light efficiency is high.

As a kind of alternative of aforesaid way, the first color of light is green light, and the second color of light is feux rouges, third color Light is blue light, and feux rouges includes third band of light, the 4th band of light and the 5th band of light in this way, and blue light includes the 6th wave Duan Guang, the 7th band of light and the 8th band of light.A part of the third band of light of feux rouges can be used under the program to supplement The green light G1 of one wave band, while a part of the 8th wave band of blue light can also be selected to supplement the green light G2 of second band.As Another alternative of aforesaid way, the first color of light are feux rouges, and the second color of light is blue light, and third color of light is green light.

To sum up, the embodiment of the invention provides a kind of 3D projection display system, it includes light source, colour wheel, light relay system, Combined optical system, TIR prism, color-separation and color-recombination prism, three pieces DMD and projection lens, light source is combined with colour wheel is divided into two groups, light The excitation segmentation colour wheel 1 of source 1 generates the green light and feux rouges of timing, and light source 2 is made of the blue semiconductor laser of two kinds of wave bands, and two Person's alternation switch excite colour wheel 2 generate timing two kinds of blue lights, a kind of blue light is synchronous with above-mentioned green light, another blue light with it is above-mentioned Feux rouges is synchronous；Light relay system directs into light that colour wheel is emitted collimation at combined optical system, combined optical system by the blue light of timing with Green light and blue light and feux rouges close color, and color-separation and color-recombination prism is incident on after TIR prism；Color-separation and color-recombination prism is three-chip type Philips prism, the anti-blue film of first prism plating, by two kinds of blu-ray reflections to DMD1 of timing, second prism is using green Part reflection and fractional transmission occur for optical band and red spectral band dual band pass filter coating, green light and feux rouges, form two groups of timing Green light and feux rouges be assigned on DMD2 and DMD3, right and left eyes red, green, blue three primary colours light is consequently formed, it is first-born by projection lens At right and left eyes image, cooperates optical filter glasses, finally realize 3D display.

It is different from the pure laser light source 3D of traditional color difference formula 3D and existing 6P, the present invention uses semiconductor laser light resource It excites colour wheel to generate mixed light, right and left eyes red, green, blue three primary colours is generated by Philips prism dual band pass plated film, which makes It is complete to obtain right and left eyes three primary colours, avoids the ropy disadvantage of traditional colour differential 3D rendering, while its light source is blue-light semiconductor Laser, structure is simple, and cost is easy to control, and 6P formula 3D selects two groups of RGB semiconductor lasers, and at high cost, system is multiple It is miscellaneous, and red green laser low efficiency, pure laser light source dissipation spot technical difficulty are big, it is even more important that and the invention enables a left sides Right eye colour gamut is close, and 3D effect is true to nature, and light efficiency is high, in short, the present invention provides a kind of simpler and more practical and effect is preferable 3D display system.

The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims

1. a kind of 3D projection display system characterized by comprising

Light source, is used for output timing light, and the sequential light includes the first sequential light and the second sequential light, wherein when described first Sequence light includes the first color of light of the second color of light and first band, and second sequential light includes third color of light and the second wave First color of light of section, wherein first color of light, second color of light and the third color of light are respectively different face Color base coloured light；

It is divided Multiplexing apparatus, being arranged in the transmission optical path of the sequential light, leading to for being divided into the sequential light along the first light The first light, the second light along the second optical channel transmission and the third light along third optical channel transmission of road transmission, wherein described the Second colors light includes the continuous third band of light of wave band, the 4th band of light and the 5th band of light, and the third color of light includes wave Continuous 6th band of light of section, the 7th band of light and the 8th band of light, first light include the first face of the first band First color of light of coloured light and the second band, second light include the 4th band of light and the 7th band of light, The third light includes the third band of light, the 5th band of light, the 6th band of light and the 8th band of light, institute State light splitting Multiplexing apparatus be also used to according to first light, first group of three primary colours light of second light and the third photogenerated and Second group of three primary colours light, wherein first group of three primary colours light and second group of three primary colours light are received for different eyes Two groups of primary lights, first group of three primary colours light include the first color of light, the 4th band of light and the 7th wave of the first band Duan Guang, second group of three primary colours light include the first color of light, the third band of light, the 5th wave of the second band Duan Guang, the 6th band of light and the 8th band of light；And

Optical modulator, for being modulated to first group of three primary colours light and second group of three primary colours light, and by modulated light The light splitting Multiplexing apparatus is reflexed to, is exported after the light splitting Multiplexing apparatus light combination.

2. 3D projection display system according to claim 1, which is characterized in that be equipped with and divide on the light splitting Multiplexing apparatus Color closes color film, and the color-separation and color-recombination film includes reflectance coating and dual band pass filter coating, and the reflectance coating is for reflecting the first wave First color of light of section and the first color of light of the second band, the dual band pass filter coating is for reflecting the 4th wave band Light and the 7th band of light, and transmit the third band of light, the 5th band of light, the 6th band of light and described Eight band of light, wherein the sequential light generates first group of three primary colours by the reflectance coating and the dual band pass filter coating Light and second group of three primary colours light.

3. 3D projection display system according to claim 1, which is characterized in that the wavelength of the 4th band of light is less than The wavelength of five band of light, and it is greater than the wavelength of third band of light；Wave of the wavelength of 7th band of light less than the 8th band of light It is long, and it is greater than the wavelength of the 6th band of light.

4. 3D projection display system according to claim 2, which is characterized in that the light splitting Multiplexing apparatus includes: first Prism, the second prism and third prism, first prism, second prism and the third prism successively sequentially arrange, The sequential light passes sequentially through first prism, second prism and the third prism, wherein

The reflectance coating is equipped between first prism and second prism,

The dual band pass filter coating is equipped between second prism and the third prism.

5. 3D projection display system according to claim 2, which is characterized in that the optical modulator includes: the first number Micro mirror element, the second Digital Micromirror Device and third Digital Micromirror Device, wherein

First Digital Micromirror Device is arranged in the reflectance coating and reflects the first color of light of the first band and described On the direction of first color of light of second band, for the first color of light and the second band to the first band One color of light is modulated,

Second Digital Micromirror Device, which is arranged, reflects the 4th band of light and the described 7th in the dual band pass filter coating On the direction of band of light, for being modulated to the 4th band of light and the 7th band of light,

Third Digital Micromirror Device setting the third band of light, the 5th band of light, the 6th band of light and In the exit direction of 8th band of light, for the third band of light, the 5th band of light, the 6th band of light It is modulated with the 8th band of light.

6. 3D projection display system according to claim 2, which is characterized in that the reflectance coating is also used to reflect described A part of wave band of three band of light, the dual band pass filter coating transmit another part wave band of the third band of light；Alternatively, institute A part of wave band that reflectance coating is also used to reflect the 8th band of light is stated, the dual band pass filter coating transmits the 8th wave band Another part wave band of light.

7. 3D projection display system according to claim 1, which is characterized in that the light source includes:

Laser light source, for emitting the first color of light of the first band and the first color of light of the second band；

The direction of the launch of the first color of light of the first band and the first color of light of the second band is arranged in colour wheel On, the colour wheel is equipped with fluorescent powder, and the fluorescent powder includes the second color fluorescence powder and third color fluorescence powder, wherein institute The second color fluorescence powder is stated to be used to generate second color of light under the excitation of the first color of light of the first band, it is described Third color fluorescence powder under the excitation of the first color of light of the second band for generating the third color of light；Described First color of light of first band described in second colors fluorescent powder transmissive portion, described in the third color fluorescence powder transmissive portion First color of light of two wave bands.

8. 3D projection display system according to claim 2, which is characterized in that the light source includes:

First laser light source, for emitting the first color of light of the first band；

Second laser light source, for emitting the first color of light of the first band and the first color of light of the second band；

First colour wheel is arranged on the light emitting direction of the first laser light source, and first colour wheel is equipped with the second color Fluorescent powder and third color fluorescence powder, first colour wheel under the excitation of the first color of light of the first band for generating Second color of light and the third color of light；

Second colour wheel is arranged on the light emitting direction of the second laser light source, and second colour wheel is equipped with scattering powder, institute The second colour wheel is stated for the first color of light of the first band and the first color of light of the second band to be scattered and disappeared Polarization,

Wherein, the second laser light source emits the first color of light of the first band and the first color of the second band The switching frequency of the second color fluorescence powder and the third color fluorescence powder on the switching frequency of light and first colour wheel It is identical.

9. 3D projection display system according to claim 8, which is characterized in that the first laser light source and described second Laser light source is all made of semiconductor laser.

10. 3D projection display system according to claim 1, which is characterized in that the light source includes:

LED light source, for emitting the second color of light comprising the third wave band, the 4th wave band and the 5th wave band, the LED light Source is also used to emit the third color of light comprising the 6th wave band, the 7th wave band and the 8th wave band.

11. 3D projection display system according to claim 8, which is characterized in that the 3D projection display system further include:

First condenser lens is arranged between the first laser light source and first colour wheel, is used for the first laser First color of light of light source transmitting focuses on first colour wheel；

Second condenser lens is arranged between the second laser light source and second colour wheel, is used for the second laser First color of light of light source transmitting focuses on second colour wheel.

12. 3D projection display system according to claim 8, which is characterized in that the 3D projection display system further include:

First collecting lens are arranged on the light output direction of first colour wheel；

Second collecting lens are arranged on the light output direction of second colour wheel；

First reflecting mirror, for reflecting the first color of light of the first band that second collecting lens are collected；

Multiplexing apparatus, the Multiplexing apparatus be used for reflect the first band the first color of light and the second band first Color of light, and second color of light and the third color of light are transmitted, obtain mixed light.

13. 3D projection display system according to claim 12, which is characterized in that the 3D projection display system also wraps It includes:

Square rod is arranged in the direction of the launch of the mixed light, for carrying out dodging to the mixed light；

Relay lens is arranged on the light output direction of the square rod；

Second reflecting mirror is arranged on the light output direction of the relay lens, for reflecting the light of the relay lens output；

Total reflection prism, light total reflection for reflecting second reflecting mirror to the prism for being coated with the color-separation and color-recombination film On.

14. 3D projection display system according to claim 1, which is characterized in that the 3D projection display system further include:

Projection lens exports first group of three primary colours light and second group of three primary colours for receiving the optical modulator control Light；And

Glasses, the glasses include left eyeglass lens and right eye eyeglass, wherein the left eyeglass lens are for transmiting described first group three Primary lights, the right eye eyeglass is for transmiting second group of three primary colours light.

15. according to claim 1 to 3D projection display system described in any one of 14, which is characterized in that

First color of light is blue light, and second color of light is green light, and the third color of light is feux rouges；Or

First color of light is green light, and second color of light is feux rouges, and the third color of light is blue light；Or

First color of light is feux rouges, and second color of light is blue light, and the third color of light is green light.

16. 3D projection display system according to claim 13, which is characterized in that the sequential light first passes through the reflection After film carries out reflection beam splitting, the light of the reflectance coating transmission is divided using the dual band pass filter coating.