CN102608855A - Lamp optical system for projected display of 3-LCOS (Liquid Crystal On Silicon) laser - Google Patents
Lamp optical system for projected display of 3-LCOS (Liquid Crystal On Silicon) laser Download PDFInfo
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Abstract
The invention discloses a lamp optical system with an integrated area light source module for projected display of 3-LCOS (Liquid Crystal On Silicon) laser. The system comprises a red light path, a blue light path and a green light path which are formed by two independent light paths, wherein light generated by a red light source projects needed light spots on an LCOS chip through one independent light path, and light generated by blue and green light sources share the other independent light path to project the needed light spots on the LCOS chip. The lamp optical system disclosed by the invention is different from the conventional projection lighting optical structure, and the area light source module of the lamp optical system has the functions of beam shaping and light spot homogenizing simultaneously, so that under the circumstance of same power output, the optical structure of the optical system is simplified, the system volume is reduced, and the efficiency for solar energy utilization of the system is enhanced.
Description
Technical field
The present invention relates to optical technical field, in particular to a kind of 3 chip reflective LCD element LCOS (3 chips-liquid crystal on silicon, 3-LCOS) laser projection display lighting optical system.
Background technology
Light source in the Projection Display is the vitals that constitutes display system, its luminescence efficiency, luminous form, and light source form, spectrum, life-span all directly determine the quality of projection display system.During colour projection shows with laser as RGB (RGB) three primary light source, source efficiency image level sense high, realization is good, the high and low brightness of color saturation and high-contrast.Laser display becomes the developing direction and the main flow trend of following display technique.
In existing illumination path, light source need pass through the beam shaping system, passes through the hot spot homogenizer again---and adopt compound eye or integrating rod usually, through relay system hot spot is projected on the spatial light modulation chip at last.Therefore, through after the multisystem, luminous energy has partial loss in the existing illumination path, in system design process, will optimize optical-mechanical system and reach that efficiency of light energy utilization height, optical quality are good, the purpose of compact conformation.
Using square rod to do in the projection lighting optical system of light balancing device, the light beam that light source sends at first will pass through shaping, and the light source angle of divergence is bigger, pass through the lens converging beam.As select for use integrating rod as light balancing device, the size of integrating rod is calculated its optical extend gained according to chip to the requirement of hot spot.And need will take into account the integrating rod follow-on system through the coupled lens group when designing coupled system before the even light of light beam entering integrating rod, be purpose to improve coupling efficiency, to reduce optical energy loss, optimize hot spot homogenize effect.
If select for use compound eye lens group as light balancing device, to guarantee that then the light beam after the light source shaping is that nearly collimated light beam projects on the fly's-eye lens, fly's-eye lens need be according to the physical construction of illuminator; With fly's-eye lens and design of its follow-on system, not only need carry out analytical calculation to its optical extend, also to examine the size of the sub-mirror of optimal design compound eye; Numerical aperture; Optical parametrics such as focal length also will be done eccentric design to compound eye sometimes, and its design process is more complicated than the integrating rod system.
Summary of the invention
The technical matters that (one) will solve
In view of this, fundamental purpose of the present invention is to provide a kind of 3-LCOS laser projection display lighting optical system, to simplify the projection lighting optical system structure, reduce system bulk, to reduce design difficulty, improves system's efficiency of light energy utilization.
(2) technical scheme
For achieving the above object; The invention provides a kind of 3-LCOS laser projection display lighting optical system with integrated modular surface light source; This system comprises red, blue, green three light paths; And these red, blue, green three light paths are to be made up of two independent light paths, and what wherein red-light source sent only projects required hot spot on the LCOS chip through an independent light path, and shared another independent light path of light blue, that green light source is sent projects required hot spot on the LCOS chip.
In the such scheme; Light that said red-light source sends in the independent light path of process, be disposed with the integrated modular surface light source of ruddiness 10, the first dissipation spot dodging device 11, first relay lens group (12,13), first polaroid 14, a PBS prism 15, a LCOS chip 16, light-combining prism 50 and projection objective 60.
In the such scheme; The light beam that the integrated modular surface light source 10 of said ruddiness sends is through the said first dissipation spot dodging device 11; In the said first dissipation spot dodging device 11, suppress speckle phenomena and improve the homogeneity of hot spot; Then light beam is adjusted beam sizes and aperture angle through first relay lens group (12,13) successively, guarantees the degree of polarization of the light beam of entering the one PBS prism 15 again through first polaroid 14, and the hot spot that then will mate LCOS projects on the LCOS chip 16; To light-combining prism 50, get into projection objective 60 by 16 pairs of beam modulation back reflections of a LCOS chip at last.
In the such scheme, the light beam that the integrated modular surface light source 10 of said ruddiness sends has the Aspect Ratio identical with a LCOS chip 16; The said first dissipation spot dodging device 11 is arranged on after the integrated modular surface light source 10 of said ruddiness, is used to the homogeneity that suppresses speckle phenomena and improve hot spot; Said first relay lens group (12,13) is used for beam sizes and aperture angle are adjusted.
In the such scheme; Light that said indigo plant, green light source are sent in shared another independent light path; Blue, green glow has one section common optical pathways; The light beam that earlier the integrated modular surface light source 20 of blue light and the integrated modular surface light source 30 of green glow is sent closes light earlier, and through common optical pathways, last beam split again makes the indigo plant, the green glow spot that meet the requirement of LCOS chip project respectively on the LCOS chip of corresponding blue light and green glow light path.
In the such scheme; Light that said indigo plant, green light source are sent in shared another independent light path, be disposed with the integrated modular surface light source of the integrated modular surface light source 20 of blue light and green glow 30, dichronic mirror 40, the second dissipation spot dodging device 41, second relay lens group (42,43), second polaroid 21 and the 3rd polaroid 31, the 2nd PBS prism 22 and the 3rd PBS prism 22, the 2nd LCOS chip 23 and the 3rd LCOS chip 33, light-combining prism 50 and projection objective 60.
In the such scheme; Integrated modular surface light source 30 light emission directions of integrated modular surface light source 20 of said blue light and green glow become 90 ° of positions to be provided with; Blue light that sends and green beam close light through dichronic mirror 40; Dichronic mirror 40 all becomes the 45 setting with integrated modular surface light source 20 of said blue light and the integrated modular surface light source 30 of green glow, and it has the effect that when the incident of light beam 45, sees through blue light while reflect green light; The light beam that closes behind the light reaches the effect that suppresses laser speckle and improve beam uniformity through the second dissipation spot dodging device 41; Through second relay lens group (42,43) beam sizes and aperture angle are adjusted again; Then blue, blue beam is carried out beam split through dichronic mirror 44, and blue like this, green glow spot projects second polaroid 21 and the 3rd polaroid 31 at an angle of 90 respectively; The blue light spot projects on the 2nd LCOS chip 23 after getting into the 2nd PBS prism 22, by 23 pairs of beam modulation back reflections of the 2nd LCOS chip bout light prism 50, gets into projection objective 60 then; The green glow spot projects on the 3rd LCOS chip 33 after getting into the 3rd PBS prism 32, by 33 pairs of beam modulation back reflections of the 3rd LCOS chip bout light prism 50, gets into projection objective 60 then.
In the such scheme; Said red, blue, green-light source is integrated modular surface light source; (laser diode, LD) array surface light source, said integrated modular surface light source are that the LD array by surface launching or limit emitting structural constitutes to adopt integrated laser diode; The pairing wavebeam reshaping microlens array of LD array is packaged into one, and this integrated modular surface light source has the effect of even polishing shape concurrently.Said integrated modular surface light source is made up of LD array module 101 and microlens array 102; Laser instrument LD type in the LD array module 101 adopts vertical cavity surface emitting laser (Vertical-Cavity Surface-Emitting Laser; VCSEL) or limit emission (edge emission; EE) laser instrument, integrated modular surface light source are the integrated area source microlens arrays of VCSEL, or the integrated area source microlens array of EE.Said LD array module 101 is arranged according to the equal proportion that requires of LCOS chip Aspect Ratio, and said microlens array 102 is positioned at LD array module 101 rears, is used for the outgoing beam angle of divergence of each LD is adjusted, and reaches the effect of hot spot homogenize.In the integrated area source microlens array of VCSEL, the sub-mirror of each in the microlens array 102 is an employing standard spherical structure, and control outgoing beam angle is to reach the effect of the even light of shaping; In the integrated area source microlens array of EE; The sub-mirror of in the microlens array 102 each adopts cylindrical lens structure; Thereby the beam divergence angle to major and minor axis both direction different angles adjusts accordingly, and control outgoing beam angle is to reach the effect of the even light of shaping.
In the such scheme; In said two independent light paths; Dissipation spot dodging device is that the rotation diffusion sheet by driven by motor constitutes, and this rotation diffusion sheet is a kind of holographic coating diffusion sheet with certain angle of divergence, possesses Gaussian scatterer beam distribution characteristic; Not only in the laser lighting light path, play the effect of dissipation spot, help being evenly distributed of hot spot of illuminating bundle simultaneously.
In the such scheme, said two independent light paths are arranged in parallel.
(3) beneficial effect
3-LCOS laser projection display lighting optical system provided by the invention has the following advantages:
1,3-LCOS laser projection display lighting optical system provided by the invention owing to adopt RGB three LASER Light Sources, thereby has been expanded the demonstration gamut range, and the stereovision of display image is good, the high and low brightness of color saturation and high-contrast.
2,3-LCOS laser projection display lighting optical system provided by the invention adopts little spacing LD array two-dimensional surface light source module, obtains bigger output power when reducing light source module volume.
3,3-LCOS laser projection display lighting optical system provided by the invention and since optimal design the microlens array behind the two-dimensional array modular surface light source, thereby obtained better illumination hot spot homogeneity.
4,3-LCOS laser projection display lighting optical system provided by the invention because light source module has the incorporate characteristics of even polishing shape for adopting LD array two-dimensional surface light source, so simplified the lamp optical system structure, has reduced system bulk.
5,3-LCOS laser projection display lighting optical system provided by the invention; Because LD array two-dimensional surface light source module has saved the beam shaping system, even photosystem reaches; And only use a microlens array, so improved the efficiency of light energy utilization, reduced because through the optical energy loss after the multisystem.
6,3-LCOS laser projection display lighting optical system provided by the invention, owing to adopted dissipation spot dodging device, so improved the quality of projected image.
7,3-LCOS laser projection display lighting optical system provided by the invention because each optics positions of appropriate design and light channel structure, so that 3-LCOS laser projection display lighting light engine has the advantage that volume is little, light efficiency is high.
Description of drawings
For further specifying concrete technology contents of the present invention, specify as follows below in conjunction with embodiment and accompanying drawing, wherein:
Fig. 1 is the synoptic diagram according to the 3-LCOS laser projection display lighting optical system of the embodiment of the invention;
Fig. 2 a is the structural representation according to integrated modular surface light source in the 3-LCOS laser projection display lighting optical system of the embodiment of the invention;
Fig. 2 b is the Two dimensional Distribution synoptic diagram according to microlens array in the integrated modular surface light source of the embodiment of the invention;
Fig. 3 is integrated area source light path of VCSEL and the hot spot Illumination Distribution figure according to the embodiment of the invention;
Fig. 4 is integrated area source light path of EE and the hot spot Illumination Distribution figure according to the embodiment of the invention;
Fig. 5 is the synoptic diagram according to the dissipation spot dodging device of the embodiment of the invention;
Fig. 6 is the diffusion sheet angle of divergence distribution form figure according to the embodiment of the invention;
Fig. 7 is the light path and the hot spot Illumination Distribution figure of light source module and dissipation spot dodging device.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, to further explain of the present invention.
3-LCOS laser projection display lighting optical system provided by the invention; Projection lighting optical texture different from the past; Modular surface light source in this lamp optical system has beam shaping and hot spot homogenization concurrently, thereby under the situation of equal-wattage output, this lamp optical system has been simplified optical texture; Reduce system bulk, and improved system's efficiency of light energy utilization.
As shown in Figure 1; The present invention is to provide a kind of 3-LCOS laser projection display lighting optical system with integrated modular surface light source; This system comprises: red, blue, the integrated modular surface light source of green glow, dissipation spot dodging device, relay system, polarization polarization and light-combining prism system.Specifically; This system is made up of three light paths of RGB; Consider the 3-LCOS chip position, three light paths of said RGB are to be made up of two independent light paths, wherein red-light source send only through an independent light path; Blue, shared another independent light path of green light source projects required hot spot on the LCOS chip, and the purpose of arranging light path like this is to make this lighting system structure compact more.These two independent light paths structurally are arranged in parallel.
In the ruddiness light path, the light beam that the integrated modular surface light source 10 of ruddiness sends has the Aspect Ratio identical with the LCOS chip, reaches hot spot homogeneity preferably.Because the LASER Light Source coherence is good, in Projection Display, can produce speckle phenomena, influence image quality.Add the first dissipation spot dodging device 11 in the integrated modular surface light source of ruddiness 10 backs, not only can reach the effect that suppresses speckle phenomena but also help improving the hot spot homogeneity.Then light beam is adjusted beam sizes and aperture angle through first relay lens group (12,13) successively; Guarantee the degree of polarization of the light beam of entering the one PBS prism 15 again through first polaroid 14; The hot spot of coupling LCOS is projected on the LCOS chip 16; To light-combining prism 50, get into projection objective 60 by 16 pairs of beam modulation back reflections of a LCOS chip at last.
Indigo plant, green light path structural principle and ruddiness are similar, and difference is that blue green light has one section common optical pathways.Therefore need the light beam that blue, green light source module are sent be closed light earlier, through common optical pathways, last beam split again makes the indigo plant, the green glow spot that meet the requirement of LCOS chip project respectively on the LCOS chip of corresponding blue light and green glow light path.
In indigo plant, green light path; Integrated modular surface light source 30 light emission directions of integrated modular surface light source 20 of blue light and green glow become 90 ° of positions to be provided with; The light beam that sends closes light through dichronic mirror 40; 40 one-tenth 45 settings of dichronic mirror, it has the effect that when the incident of light beam 45, sees through blue light while reflect green light.The light beam that closes behind the light reaches the effect that suppresses laser speckle and improve beam uniformity through the second dissipation spot dodging device 41, through second relay lens group (42,43) beam sizes and aperture angle is adjusted that the back is blue, blue beam is carried out beam split through dichronic mirror 44 again.Blue like this, green glow spot projects the position of second polaroid 21, the 3rd polaroid 31 at an angle of 90 respectively.The indigo plant of high-polarization, green glow spot project respectively on the 2nd LCOS chip 23 and the 3rd LCOS chip 33 after getting into the 2nd PBS prism 22, the 3rd PBS prism 32, to beam modulation back reflection bout light prism 50, get into projection objective 60 by chip at last.
Wherein the integrated modular surface light source of ruddiness 10, the integrated modular surface light source 20 of blue light and the integrated modular surface light source 30 of green glow all are integrated modular surface light sources, and its structure is shown in Fig. 2 a and Fig. 2 b.Said red, blue, green integrated modular surface light source is integrated laser diode (laser diode, LD) an array surface light source.Wherein integrated modular surface light source is the LD array formation with surface launching or limit emitting structural, and with the pairing wavebeam reshaping microlens array encapsulation of LD array all-in-one-piece light source module form.This integrated modular surface light source has the effect of even polishing shape concurrently.
Integrated modular surface light source structure is made up of LD array module 101 and microlens array 102 shown in Fig. 2 a.Laser instrument LD type in the LD array module 101 can be vertical cavity surface emitting laser (Vertical-Cavity Surface-Emitting Laser, VCSEL) or limit emission (edge emission, EE).Being that integrated modular surface light source can be the integrated area source microlens array of VCSEL, also can be the integrated area source microlens array of EE.
In the integrated area source microlens array of VCSEL, the sub-mirror of each in the microlens array 102 is an employing standard spherical structure, and control outgoing beam angle is to reach the effect of the even light of shaping.In the integrated area source microlens array of EE; The sub-mirror of in the microlens array 102 each adopts cylindrical lens structure; Thereby the beam divergence angle to major and minor axis both direction different angles adjusts accordingly, and control outgoing beam angle is to reach the effect of the even light of shaping.
Integrated modular surface light source among the present invention is to adopt the version that LD array module 101 and microlens array 102 are packaged as a whole.This integrated modular surface light source can be applicable in the multi-form projecting illumination system as LCOS, LCD (Liquid Crystal Display, LCD) and digital micromirror elements (Digital Micromirror Device, DMD) projector's illumination path.
Integrated modular surface light source light path and hot spot Illumination Distribution are like Fig. 3, shown in 4.Fig. 3 is the light path and the hot spot Illumination Distribution figure of the integrated area source microlens array of VCSEL.101a is the VCSEL array, and 102a is a spherical microlens, the 103rd, and detector, it is positioned at the even optical superposition position of light beam.At 103 places, hot spot Illumination Distribution figure is shown in 103a, 103b, 103c.By 13 Illumination Distribution formula
Uniformity＝max{(Uniformity
+)，(Uniformity
-)}
Can obtain the integrated area source microlens array of VCSEL in 103 position Illumination Distribution uniformity coefficient greater than 95%.
Fig. 4 is the light path and the hot spot Illumination Distribution figure of the integrated area source microlens array of EE.102b and 102c are respectively the long and short axial sectional view of cylindrical microlenses.At 104 places, hot spot Illumination Distribution uniformity coefficient is greater than 90%.
For the integrated area source microlens array of EE, the long and short axle of laser instrument angle of divergence gap is bigger.Through behind the microlens array, light beam is weaker than the VCSEL type at the superposed positions uniformization effect.However, do not influence its effect, because the dissipation spot dodging device behind the integrated modular surface light source has further homogenize effect to hot spot.
Dissipation spot dodging device is that the rotation diffusion sheet by driven by motor constitutes, and the rotation diffusion sheet is a kind of holographic coating diffusion sheet with certain angle of divergence.This diffusion sheet possesses Gaussian scatterer beam distribution characteristic.This device not only plays the effect of dissipation spot in the laser lighting light path, help being evenly distributed of hot spot of illuminating bundle simultaneously.Dissipation spot dodging device model is as shown in Figure 5.110 is the holographic diffusion sheet.111 for driving the diffusion sheet motor rotating.Scattering particles have been covered with on the diffusion sheet shown in the 110a among Fig. 5,110b.Diffusion sheet angle, light intensity function curve map are as shown in Figure 6, are Gaussian curve and distribute.Gauss's scattering model expression formula
A is a scattering coefficient in
formula, and σ is the scattered light spot width of light intensity when dropping to
.
The light beam that the integrated area source microlens array of EE sends is through light path and Illumination Distribution such as Fig. 7 behind the diffusion sheet.At 105 places, hot spot Illumination Distribution uniformity coefficient is greater than 95%.
Therefore; The present invention has provided a kind of 3-LCOS laser light projection display system illumination path structure; And a kind of integrated modular surface light source proposed; This module has the integrated light-emitting face, and possesses shaping, even light integral structure, and the illuminator with this light source module all has significant advantage aspect system architecture, volume, the efficiency of light energy utilization.
Above-described specific embodiment; The object of the invention, technical scheme and beneficial effect have been carried out further explain, and institute it should be understood that the above is merely specific embodiment of the present invention; Be not limited to the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. 3-LCOS laser projection display lighting optical system with integrated modular surface light source; It is characterized in that; This system comprises red, blue, green three light paths; And these red, blue, green three light paths are to be made up of two independent light paths, and what wherein red-light source sent only projects required hot spot on the LCOS chip through an independent light path, and shared another independent light path of light blue, that green light source is sent projects required hot spot on the LCOS chip.
2. the 3-LCOS laser projection display lighting optical system with integrated modular surface light source according to claim 1; It is characterized in that; Light that said red-light source sends in the independent light path of process, be disposed with the integrated modular surface light source of ruddiness (10), the first dissipation spot dodging device (11), first relay lens group (12,13), first polaroid (14), a PBS prism (15), a LCOS chip (16), light-combining prism (50) and projection objective (60).
3. the 3-LCOS laser projection display lighting optical system with integrated modular surface light source according to claim 2; It is characterized in that; The light beam that the integrated modular surface light source of said ruddiness (10) sends is through the said first dissipation spot dodging device (11); In the said first dissipation spot dodging device (11), suppress speckle phenomena and improve the homogeneity of hot spot; Then light beam is adjusted beam sizes and aperture angle through first relay lens group (12,13) successively, guarantees the degree of polarization of the light beam of entering the one PBS prism (15) again through first polaroid (14), and the hot spot that then will mate LCOS projects on the LCOS chip (16); By a LCOS chip (16) to the beam modulation back reflection to light-combining prism (50), get into projection objective (60) at last.
4. the 3-LCOS laser projection display lighting optical system with integrated modular surface light source according to claim 2 is characterized in that,
The light beam that the integrated modular surface light source of said ruddiness (10) sends has and the identical Aspect Ratio of a LCOS chip (16);
The said first dissipation spot dodging device (11) is arranged on the integrated modular surface light source of said ruddiness (10) afterwards, is used to the homogeneity that suppresses speckle phenomena and improve hot spot;
Said first relay lens group (12,13) is used for beam sizes and aperture angle are adjusted.
5. the 3-LCOS laser projection display lighting optical system with integrated modular surface light source according to claim 1; It is characterized in that; Light that said indigo plant, green light source are sent in shared another independent light path; Blue, green glow has one section common optical pathways; The light beam that earlier the integrated modular surface light source of blue light (20) and the integrated modular surface light source of green glow (30) is sent closes light earlier, and through common optical pathways, last beam split again makes the indigo plant, the green glow spot that meet the requirement of LCOS chip project respectively on the LCOS chip of corresponding blue light and green glow light path.
6. the 3-LCOS laser projection display lighting optical system with integrated modular surface light source according to claim 5; It is characterized in that; Light that said indigo plant, green light source are sent in shared another independent light path, be disposed with integrated modular surface light source of blue light (20) and the integrated modular surface light source of green glow (30), dichronic mirror (40), the second dissipation spot dodging device (41), second relay lens group (42,43), second polaroid (21) and the 3rd polaroid (31), the 2nd PBS prism (22) and the 3rd PBS prism (32), the 2nd LCOS chip (23) and the 3rd LCOS chip (33), light-combining prism (50) and projection objective (60).
7. the 3-LCOS laser projection display lighting optical system with integrated modular surface light source according to claim 6; It is characterized in that; Integrated modular surface light source of said blue light (20) and the integrated modular surface light source of green glow (30) light emission direction become 90 ° of positions to be provided with; Blue light that sends and green beam close light through dichronic mirror (40); Dichronic mirror (40) all becomes the 45 setting with integrated modular surface light source of said blue light (20) and the integrated modular surface light source of green glow (30), and it has the effect that when the incident of light beam 45, sees through blue light while reflect green light; The light beam that closes behind the light reaches the effect that suppresses laser speckle and improve beam uniformity through the second dissipation spot dodging device (41); Through second relay lens group (42,43) beam sizes and aperture angle are adjusted again; Then blue, blue beam is carried out beam split through dichronic mirror (44), and blue like this, green glow spot projects second polaroid (21) and the 3rd polaroid (31) at an angle of 90 respectively; The blue light spot projects on the 2nd LCOS chip (23) after getting into the 2nd PBS prism (22), to beam modulation back reflection bout light prism (50), gets into projection objective (60) by the 2nd LCOS chip (23) then; The green glow spot projects on the 3rd LCOS chip (33) after getting into the 3rd PBS prism (32), to beam modulation back reflection bout light prism (50), gets into projection objective (60) by the 3rd LCOS chip (33) then.
8. the 3-LCOS laser projection display lighting optical system with integrated modular surface light source according to claim 1; It is characterized in that; Said red, blue, green-light source is integrated modular surface light source; (laser diode, LD) array surface light source, said integrated modular surface light source are that the LD array by surface launching or limit emitting structural constitutes to adopt integrated laser diode; The pairing wavebeam reshaping microlens array of LD array is packaged into one, and this integrated modular surface light source has the effect of even polishing shape concurrently.
9. the 3-LCOS laser projection display lighting optical system with integrated modular surface light source according to claim 8; It is characterized in that; Said integrated modular surface light source is made up of LD array module (101) and microlens array (102); Laser instrument LD type in the LD array module (101) adopts vertical cavity surface emitting laser VCSEL or limit emission (edge emission; EE) laser instrument, integrated modular surface light source are the integrated area source microlens arrays of VCSEL, or the integrated area source microlens array of EE.
10. the 3-LCOS laser projection display lighting optical system with integrated modular surface light source according to claim 9; It is characterized in that; Said LD array module (101) is arranged according to the equal proportion that requires of LCOS chip Aspect Ratio; Said microlens array (102) is positioned at LD array module (101) rear, is used for the outgoing beam angle of divergence of each LD is adjusted, and reaches the effect of hot spot homogenize.
11. the 3-LCOS laser projection display lighting optical system with integrated modular surface light source according to claim 10 is characterized in that,
In the integrated area source microlens array of VCSEL, each the sub-mirror in the microlens array (102) is an employing standard spherical structure, and control outgoing beam angle is to reach the effect of the even light of shaping;
In the integrated area source microlens array of EE; The sub-mirror of in the microlens array (102) each adopts cylindrical lens structure; Thereby the beam divergence angle to major and minor axis both direction different angles adjusts accordingly, and control outgoing beam angle is to reach the effect of the even light of shaping.
12. the 3-LCOS laser projection display lighting optical system with integrated modular surface light source according to claim 1; It is characterized in that in said two independent light paths, dissipation spot dodging device is that the rotation diffusion sheet by driven by motor constitutes; This rotation diffusion sheet is a kind of holographic coating diffusion sheet with certain angle of divergence; Possess Gaussian scatterer beam distribution characteristic, not only in the laser lighting light path, play the effect of dissipation spot, help being evenly distributed of hot spot of illuminating bundle simultaneously.
13. the 3-LCOS laser projection display lighting optical system with integrated modular surface light source according to claim 1 is characterized in that said two independent light paths are arranged in parallel.
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