CN101813290A - Tricolor semiconductor illuminator and minitype projection optical engine use same - Google Patents
Tricolor semiconductor illuminator and minitype projection optical engine use same Download PDFInfo
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- CN101813290A CN101813290A CN200910105395A CN200910105395A CN101813290A CN 101813290 A CN101813290 A CN 101813290A CN 200910105395 A CN200910105395 A CN 200910105395A CN 200910105395 A CN200910105395 A CN 200910105395A CN 101813290 A CN101813290 A CN 101813290A
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Abstract
The invention relates to a tricolor semiconductor illuminator, which comprises a red light source module, a blue light source module, a green light source module, a crossed color mixing lens and at least one optical shaping lens, wherein the crossed color mixing lens is arranged at the junction of the output light paths of the red light source module, the blue light source module and the green light source module, and used for mixing the red light beam, the blue light beam and the green light beam into one light beam; and the optical shaping lens is arranged on the output light path of the crossed color mixing lens, one surface of the optical shaping lens is a plane or spherical surface, and the opposite surface of the surface is a cylindrical surface. The coaxial tricolor semiconductor illuminator of the invention outputs light spots (rectangular light spots), through the optical shaping lens, and the light spots have the advantages of uniform output light brightness, good collimation property and consistent overall dimension proportion to the micro display panel, through the optical shaping lens, effectively enhances the light effect, and has the advantages of simple structure and low design cost. In addition, the invention also provides a minitype projection optical engine with the illuminator.
Description
Technical field
The present invention relates to lighting source and projection display technique, relate in particular to a kind of tricolor semiconductor illuminator efficiently and use the micro projection optical engine of this lighting device.
Background technology
Semiconductor light-emitting elements, for example: (Light Emitting Diode LED) is a kind of gallium phosphide (GAP), gallium nitride semi-conducting material luminescent devices that make, that can directly electric energy be converted into luminous energy such as (GAN) to light emitting diode.When its inside had certain electric current to pass through, it will be luminous.Because characteristics such as Toxic matter are grown, are quick on the draw, are not contained to LED luminous efficiency height, life-span, make its application more and more widely, especially white light LEDs, be considered to continue incandescent lamp, the later third generation lighting source of fluorescent lamp are widely used in liquid crystal projection apparatus, mobile phone backlight, display screen etc.
At present, the lighting system of lighting source generally is divided into critical illumination and Kohler illumination.For critical illumination, the hot spot of outgoing is generally the hot spot of semiconductor chip outer shape behind its semiconductor chip scioptics, because effective front surface of standard semiconductor chip is normally square, therefore, the outgoing hot spot of critical illumination also is square usually.And for Kohler illumination, the hot spot of outgoing is generally circular light spot behind its semiconductor chip scioptics.When the lighting source of these two kinds of lighting systems is applied in projector, because the imaging liquid crystal panel in the liquid crystal projector is a length-width ratio is the rectangle of 4: 3 or 16: 9, the screen of display image also is a rectangle, obviously, square focus spot that this lighting source sends or circular light spot can not all apply to the liquid crystal panel that throws light on, the edge light of square focus spot or circular light spot will lose, reduce the light utilization efficiency of lighting source, and the defective that square focus spot or circular light spot illumination rectangle liquid crystal panel is easy to generate is: there is the dark space corner of the image that shows on the screen, influences the Projection Display quality.
Summary of the invention
In view of this, must provide a kind of simple in structure, light efficiency height, the tricolor semiconductor illuminator of good uniformity.
In addition, also need provide a kind of simple in structure, efficiency of light energy utilization height, the Projection Display quality is good, the micro projection optical engine that size is little.
A kind of tricolor semiconductor illuminator comprises the red-light source module, blue light source module, green-light source module, X-type color combination lens and at least one optical shaping lens.Red-light source module outgoing red light beam.Blue light source module outgoing blue light light beam.Green-light source module outgoing green beam.X-type color combination lens is arranged at the intersection of the output light path of described red-light source module, blue light source module and green-light source module, and being used to merge described red light beam, blue light light beam and green beam is a branch of light.The optical shaping lens are arranged on the output light path of described X-type color combination lens, and a wherein surface of these optical shaping lens is plane or sphere, and its another surface relative with this surface is a cylinder.
A kind of micro projection optical engine comprises polarizing beam splitter, little display floater, projecting lens and above-mentioned tricolor semiconductor illuminator.Polarizing beam splitter is arranged on the output light path of described tricolor semiconductor illuminator.Little display floater is used for received polarised light is modulated, and is converted to another polarised light vertical with this polarised light, and makes this another polarised light carry image information.Projecting lens is used to receive and throw another polarised light that carries image information.
A kind of micro projection optical engine comprises tricolor semiconductor illuminator, polarizing beam splitter, little display floater and projecting lens.Tricolor semiconductor illuminator comprises the red-light source module, blue light source module, green-light source module, X-type color combination lens and cylindrical lens.Red-light source module outgoing red light beam.Blue light source module outgoing blue light light beam.Green-light source module outgoing green beam.X-type color combination lens is arranged at the intersection of the output light path of described red-light source module, blue light source module and green-light source module, and being used to merge described red light beam, blue light light beam and green beam is a branch of light.Cylindrical lens is arranged between described X-type color combination lens and the polarizing beam splitter, and, be glued on the end face of described polarizing beam splitter, wherein, the cemented surface of described cylindrical lens and described polarizing beam splitter is the plane, is cylinder on the surface of the cylindrical lens of described X-type color combination lens side.Polarizing beam splitter is arranged on the output light path of described tricolor semiconductor illuminator.Little display floater is used for received polarised light is modulated, and is converted to another polarised light vertical with this polarised light, and makes this another polarised light carry image information.Projecting lens is used to receive and throw another polarised light that carries image information.
Coaxial tricolor semiconductor illuminator of the present invention, light source module by three primary colours, X-type color combination lens and optical shaping lens, brightness output is even, collimation is good, with the consistent hot spot of little display floater appearance and size ratio, improve the utilization rate of luminous energy, simple in structure, design cost is cheap.And use the coaxial micro projection optical engine of above-mentioned tricolor semiconductor illuminator, its optical system design process only relates to tricolor semiconductor illuminator, polarizing beam splitter, little display floater and projecting lens, do not relate to other optics, simple in structure, brightness is even, the Projection Display quality is good, and size is little, and production cost is lower.In addition, the structure that adopts cylindrical lens and polarizing beam splitter to integrate helps reducing the volume of micro projection optical engine, makes its structure more compact.
Description of drawings
In order to be easy to explanation, the present invention is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 a is the planar structure schematic diagram of the tricolor semiconductor illuminator of first embodiment of the invention;
Fig. 1 b among Fig. 1 a of the present invention along the structural representation of straight line A-A direction;
Fig. 2 a is the perspective view of first embodiment of the optical shaping lens of Fig. 1;
Fig. 2 b is the perspective view of second embodiment of the optical shaping lens of Fig. 1;
Fig. 2 c is the perspective view of the 3rd embodiment of the optical shaping lens of Fig. 1;
Fig. 2 d is the perspective view of the 4th embodiment of the optical shaping lens of Fig. 1;
The hot spot effect schematic diagram that Fig. 2 e exports when critical illumination for tricolor semiconductor illuminator of the present invention;
The hot spot effect schematic diagram that Fig. 2 f exports when Kohler illumination for tricolor semiconductor illuminator of the present invention;
Fig. 3 is the planar structure schematic diagram of the tricolor semiconductor illuminator of second embodiment of the invention;
Fig. 4 is the planar structure schematic diagram of the tricolor semiconductor illuminator of third embodiment of the invention;
Fig. 5 is the planar structure schematic diagram of the micro projection optical engine of first embodiment of the invention;
Fig. 6 is the planar structure schematic diagram of the micro projection optical engine of second embodiment of the invention;
Fig. 7 is the planar structure schematic diagram of the micro projection optical engine of third embodiment of the invention.
The specific embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 a is depicted as the planar structure schematic diagram of the tricolor semiconductor illuminator of first embodiment of the invention; Consult Fig. 1 b simultaneously, among Fig. 1 a of the present invention along the structural representation of straight line A-A direction.Tricolor semiconductor illuminator comprises red-light source module 11, blue light source module 21, green-light source module 31, X-type color combination lens 41, optical shaping lens 51 and polarization converter 61.
Red-light source module 11 comprises red light semiconductor light-emitting component 112, and the ruddiness shaping mirror group 113 that is used to collect the received red light beam of also shaping.Blue light source module 21 comprises blue-light semiconductor light-emitting component 212, and the blue light shaping mirror group 213 that is used to collect the received blue light light beam of also shaping.Green-light source module 31 comprises green glow semiconductor light-emitting elements 312, and the green glow shaping mirror group 313 that is used to collect the received green beam of also shaping.
In the embodiment of the present invention, red light semiconductor light-emitting component 112, blue-light semiconductor light-emitting component 212 and green glow semiconductor light-emitting elements 312 are light emitting diode (Light Emitting Diode, LED) chip are used to send 180 ° light.And led chip is connected with the controller (not shown), and the sequential that is used for control chip is luminous.Each working frequency of chip is set by the required illumination parameter of little display floater, shows best colour vision effect to reach.Again, the quantity of this led chip can be one, also can be a plurality of (the consulting Fig. 1 b) of arranging with array way.Adopt of the arrangement of a plurality of led chips, help improving the lumen quantity of entire lighting device, and then increase the brightness of projected light beam with array way.In addition, ruddiness shaping mirror group 113, blue light shaping mirror group 213 and green glow shaping mirror group 313 include two tactic positive lens.In the embodiment of the present invention, be the positive lens of two falcates, its material is a glass, and order is arranged between semiconductor light-emitting elements 112,212,312 and the X-type color combination lens 41.
In other embodiment of the present invention, also can adopt planoconvex spotlight or biconvex lens to form shaping lens group, and the quantity of positive lens can be one, also can repeat no more for more than two here.
X-type color combination lens 41 is arranged at the intersection of the output light path of red-light source module 11, blue light source module 21 and green-light source module 31, and being used to merge red light beam, blue light light beam and green beam is a branch of light.In the embodiment of the present invention, X-type color combination lens 41 is the tabular X-type color combination lens, and it comprises and is configured to forked first flat board, 411, the second dull and stereotyped the 412 and the 3rd flat boards 413.And first flat board, 411, the second dull and stereotyped the 412 and the 3rd dull and stereotyped 413 surfaces all are coated with film (not indicating among the figure).Red-light source module 11, blue light source module 21 and green-light source module 31 are arranged at respectively on three non-adjacent sides of X-type color combination lens 41 and optical shaping lens 51.Say that in detail ruddiness shaping mirror group 113 is arranged between red light semiconductor light-emitting component 112 and the X-type color combination lens 41, collect red light beam and red light beam is converted into and be fit to the required size of X-type color combination lens 41.Blue light shaping mirror group 213 is arranged between blue-light semiconductor light-emitting component 212 and the X-type color combination lens 41, collects the blue light light beam and the blue light light beam is converted into the required size of suitable X-type color combination lens 41.Green glow shaping mirror group 313 is arranged between green glow semiconductor light-emitting elements 312 and the X-type color combination lens 41, collects green beam and green beam is converted into to be fit to the required size of X-type color combination lens 41.Therefore, the quantity of positive lens can design according to the size of X-type color combination lens 41 in ruddiness shaping mirror group 113, blue light shaping mirror group 213 and the green glow shaping mirror group 313.As a rule, the size of X-type color combination lens 41 is more little, the angle of divergence of the incident beam that it is required is also more little, and the light beam that sends from led chip just needs progressively to reduce to incide through the convergence of more positive lens the angle of divergence of X-type color combination lens 41, to improve the utilization rate of luminous energy.
In other embodiment of the present invention, X-type color combination lens 41 also can adopt four plate pack to synthesize cross shaped head, certainly, X-type color combination lens 41 also can adopt light-combining prism, red-light source module 11, blue light source module 21 and green-light source module 31 then are surrounded on this light-combining prism, repeat no more here.
In other embodiment of the present invention, also can be cylinder, promptly 51 flip horizontals of the optical shaping lens among Fig. 1 be got final product for 180 ° at the optical shaping lens of X-type color combination lens side.This cylinder also can be recessed cylinder, is used for received launching spot is stretched, and is shaped as rectangular light spot.And the length-width ratio of rectangular light spot also can be other ratio, as long as the radius of curvature of the rear surface 512 of appropriate design optical shaping lens 51.
Again, the plastic lens that is formed in one of these optical shaping lens 51; Adopt integrated plastic lens, help anaberration.When the front surface 511 of optical shaping lens 51 was sphere, these optical shaping lens 51 can also be the gummed mirror, are formed by spherical lens and cylindrical lens gummed.And the cemented surface of this gummed mirror is the plane, and spherical lens and cylindrical lens are the identical glass lens of refractive index, help reducing aberration.Certainly, when the front surface 511 of optical shaping lens 51 was the plane, these optical shaping lens 51 still can be the gummed mirror, are formed by plate glass and cylindrical lens gummed.
In other embodiment of the present invention, polarization converter 61 can also be arranged between X-type color combination lens 41 and the optical shaping lens 51, therefore, after 180 ° the light process shaping mirror group and X-type color combination lens 41 that led chip sent, the output angle of divergence is less than or equal to the light of-15 °～+ 15 ° single polarization state.In addition, can also comprise three or three above polarization converters, be arranged at respectively between red-light source module, blue light source module, green-light source module and the X-type color combination lens (consulting Fig. 4).Certainly, this polarization converter 61 also can omit.
Fig. 2 a～Fig. 2 d is respectively the perspective view of the optical shaping lens of Fig. 1, wherein, the optical shaping lens 51a shown in Fig. 2 a is single-column face lens, and its front surface 511a is protruding sphere, rear surface 512a is the projection face, constitutes a biconvex sphero-cylindrical lens.The structure of the optical shaping lens 51a of the optical shaping lens 51b shown in Fig. 2 b and first embodiment is basic identical, the difference be that the front surface 511b of the optical shaping lens 51b shown in Fig. 2 b is the plane, therefore, formation be a plano-convex cylindrical lens.Optical shaping lens 51c shown in Fig. 2 c is a bicylinder lens, the said bicylinder lens of the present invention is meant that the formed refractive surface in cross section of orthogonal both direction is cylinder, wherein, x is an optical axis, in the specific embodiment, be that the refractive surface of the both direction corresponding with the long length of side direction of little display floater and minor face length direction is a cylinder.In the embodiment of the present invention, its front surface 511c is protruding sphere, and rear surface 512c is the projection face.The structure of the optical shaping lens 51c of optical shaping lens 51d shown in Fig. 2 d and the 3rd embodiment is basic identical, and difference is that the front surface 511d of the optical shaping lens 51d shown in Fig. 2 d is the plane.
Fig. 2 e is depicted as the hot spot effect schematic diagram that tricolor semiconductor illuminator of the present invention is exported when critical illumination.During critical illumination, the hot spot that the light that semiconductor light-emitting elements sends is exported after shaping mirror group and X-type color combination lens is generally square focus spot, shaping through optical shaping lens 51a, 51b is handled, be compressed into the rectangular light spot near little display floater (not shown) outer shape, for example length-width ratio is the rectangular light spot of 4: 3 or 16: 9.That is, the light of the fill area b1 of square focus spot (the part edge part of original hot spot) is compressed among the a1 of rectangular area, makes the edge light of original hot spot obtain utilization, and then has improved the utilization rate of luminous energy.Say in detail, the viewing area size of little display floater is the size of rectangular area a1 shown in the figure, obviously can produce two dark picture areas b1, and be the optical shaping lens 51a of projection face by cylinder of the present invention, 51b, single-column face lens, the long length of side (length direction) with little display floater is a benchmark, the light of two dark picture areas of former directive, be the edge light of the minor face long (width) of little display floater, be compressed among the a1 of rectangular area, with the ratio of little display floater about equally, therefore, it is good that square focus spot is compressed to collimation, with the rectangular light spot that little display floater appearance and size is complementary, improve the uniformity of output facula simultaneously.
In other embodiment of the present invention, can by cylinder the optical shaping lens of recessed cylinder also, minor face long (width) with little display floater is a benchmark, and the light of the long length of side (length direction) of the little display floater of former directive is stretched as and little display floater ratio hot spot about equally.
Fig. 2 f is depicted as the hot spot effect schematic diagram that tricolor semiconductor illuminator of the present invention is exported when Kohler illumination.During Kohler illumination, the hot spot that the light that semiconductor light-emitting elements sends is exported after shaping mirror group and X-type color combination lens is generally circular light spot, shaping through optical shaping lens 51c, 51d is handled, and is compressed into the rectangular light spot near little display floater (not shown) shape.That is, the light of the fill area b2 around the circle (marginal portion of original hot spot) is compressed among the a2 of rectangular area, makes the edge light of original hot spot obtain utilization, and then has improved the utilization rate of luminous energy.Say in detail, the viewing area size of little display floater is the size of rectangular area a2 shown in the figure, obviously can produce four dark picture areas b2, and be optical shaping lens 51c, the 51d of projection face, a bicylinder lens by cylinder of the present invention, the light of four dark picture areas of former directive, be edge light, be compressed among the a2 of rectangular area, therefore, circular light spot is compressed to collimation rectangular light spot good, that be complementary with little display floater appearance and size, improves the uniformity of output facula simultaneously.
In other embodiment of the present invention, can be the optical shaping lens of recessed cylinder by cylinder also, circular light spot is stretched as and little display floater ratio hot spot about equally.
Therefore, coaxial tricolor semiconductor illuminator of the present invention, the light that semiconductor light-emitting elements sends, behind shaping mirror group, X-type color combination lens and optical shaping lens, brightness output is even, collimation is good, with the consistent hot spot of little display floater appearance and size ratio, improve the utilization rate of luminous energy, simple in structure, design cost is cheap.
Figure 3 shows that the planar structure schematic diagram of the tricolor semiconductor illuminator of second embodiment of the invention, the structure of this tricolor semiconductor illuminator and tricolor semiconductor illuminator shown in Figure 1 is basic identical, difference is that the quantity of the optical shaping lens of tricolor semiconductor illuminator shown in Figure 3 is 2, and two optical shaping lens 531,532 are vertically set on the output light path of X-type color combination lens 43 mutually.Herein, these two optical shaping lens 531,532 are equivalent to a bicylinder lens, from both direction (the long length of side direction and the minor face length direction of little display floater) compression or stretching launching spot, be shaped as and the consistent hot spot of little display floater appearance and size ratio respectively.
In other embodiment of the present invention, the quantity of optical shaping lens can be one, perhaps more than two, repeats no more here.
X-type color combination lens 43 is a light-combining prism, and red-light source module 13, blue light source module 23 and green-light source module 33 then are surrounded on this light-combining prism.Polarization converter 63 is arranged between X-type color combination lens 43 and the optical shaping lens 53, is used for received non-polarized light is converted to the polarised light of single polarization state.
In other embodiment of the present invention, this X-type color combination lens 43 also can be the tabular X-type color combination lens, polarization converter 63 can also be arranged on the output light path of optical shaping lens 53 or be arranged between red-light source module, blue light source module, green-light source module and the X-type color combination lens, repeats no more here.
Figure 4 shows that the planar structure schematic diagram of the tricolor semiconductor illuminator of third embodiment of the invention, the structure of the tricolor semiconductor illuminator of this tricolor semiconductor illuminator and first embodiment is basic identical, difference is in the tricolor semiconductor illuminator shown in Figure 4, ruddiness shaping mirror group 143, blue light shaping mirror group 243 and green glow shaping mirror group 343 include reflective compound parabolic concentrator (Compound Parabolic Concentrator, CPC), its material is plastics, and outer cross sectional shape is oval or circular.The light outgoing zone of the central portion of compound parabolic concentrator is convex curved surface, and the perimeter sides reflector space is curved surface, and the central optical incident area then is the concavity curved surface.Therefore, the wide-angle incident light that semiconductor light-emitting elements sends becomes substantially parallel light beam outgoing after the experiences total internal reflection of lateral reflection zone around, and the low-angle incident light that it sends is then assembled through the central portion refraction.
In other embodiment of the present invention, the structure of compound parabolic concentrator is not limited to the structure in the specific embodiment of the invention, and for example: its central incident light district territory also can be the plane.In addition, ruddiness shaping mirror group 143, blue light shaping mirror group 243 and green glow shaping mirror group 343 all can also comprise at least one lens again, promptly between each compound parabolic concentrator and X-type color combination lens 44, all at least one lens can be set again, further light beam carried out shaping and to reduce the angle of divergence of emergent light.
In the embodiment of the present invention, three polarization converters 64 are arranged at respectively between red-light source module 14, blue light source module 24, green-light source module 34 and the X-type color combination lens 44.
In other embodiment of the present invention, the quantity of polarization converter 64 also can be one, is arranged on the output light path of optical shaping lens 54 (consulting Fig. 1), perhaps between X-type color combination lens 44 and the optical shaping lens 54 (consulting Fig. 3).Certainly, the quantity of this polarization converter 64 also can be for omitting this polarization converter 64 more than three or in lighting device.
Figure 5 shows that the planar structure schematic diagram of the micro projection optical engine of first embodiment of the invention.This micro projection optical engine comprises tricolor semiconductor illuminator, polarizing beam splitter 75, little display floater 85 and projecting lens (not shown).Wherein, tricolor semiconductor illuminator is the tricolor semiconductor illuminator of above-mentioned arbitrary embodiment.
Polarizing beam splitter 75 is arranged on the output light path of tricolor semiconductor illuminator, in the embodiment of the present invention, polarizing beam splitter 75 is the lens type polarizing beam splitter, compose cube shaped by two triangular prisms, be coated with the polarization spectro rete therebetween on the contact-making surface, form a polarization light-dividing surface by this polarization spectro rete, this polarization light-dividing surface can be converted to non-polarized light polarised light and isolate the S polarised light and the P polarised light.Certainly, polarizing beam splitter 75 also can compose other shape by other prism, is converted into the polarised light outgoing as long as satisfy the non-polarized light of incident.
In other embodiment of the present invention, this polarizing beam splitter 75 also can replace (consulting Fig. 6) by flat polarizing beam splitter.
In the embodiment of the present invention, the quantity of little display floater 85 is one, the little display floater 85 of monolithic is arranged at a non-adjacent side of polarizing beam splitter 75 and tricolor semiconductor illuminator, be used for received polarised light is modulated, be converted to another polarised light vertical, and make this another polarised light carry image information with this polarised light.In the present embodiment, the little display floater 85 of monolithic is a silica-based liquid crystal panel.When the polarised light that receives when the little display floater 85 of monolithic is the S polarised light, after the modulation through the little display floater 85 of monolithic, to be converted to the P polarised light that carries image information, and with on its reflected back polarizing beam splitter 75, by polarizing beam splitter 75 with this P polarized light transmission to projecting lens.In other words, little display floater 85 opposing parallel of projecting lens and monolithic are arranged at a side of polarizing beam splitter 75, are used to receive and throw another polarised light that carries image information, i.e. P polarised light.
In other embodiment of the present invention, the little display floater 85 received polarised lights of this monolithic also can be the P polarised light, after the modulation through the little display floater 85 of monolithic, be converted to the S polarised light that carries image information, and on its reflected back polarizing beam splitter 75, this S polarised light is reflexed on the projecting lens by polarizing beam splitter 75.In other words, the little display floater 85 adjacent sides that are arranged at polarizing beam splitter 75 of projecting lens and monolithic, that is, the little display floater 85 of projecting lens and monolithic is arranged at respectively on the adjacent two sides of polarizing beam splitter 75.At this moment, projecting lens is to be used to receive and throw the S polarised light that carries image information.
Therefore, in the coaxial micro projection optical engine of the present invention, tricolor semiconductor illuminator sends the uniform light of brightness after the polarizing beam splitter beam split, offer little display floater, afterwards, little display floater modulates image light and enters polarizing beam splitter once more, outputs to external screen by polarizing beam splitter from projection lens, and its optical system design process only relates to tricolor semiconductor illuminator, polarizing beam splitter, little display floater and projecting lens, do not relate to other optics, simple in structure, good uniformity, efficiency of light energy utilization height, and size is little, and production cost is lower.
Figure 6 shows that the planar structure schematic diagram of the micro projection optical engine of second embodiment of the invention, the structure of the micro projection optical engine of this micro projection optical engine and first embodiment is basic identical, and difference is that the polarizing beam splitter 76 of micro projection optical engine shown in Figure 6 is flat polarizing beam splitter.This flat polarizing beam splitter is the tabular transparent base (as glass, plastic cement etc.) that a surface has the polarization spectro rete, perhaps be made by the tabular crystal that produces the polarization spectro effect through PROCESS FOR TREATMENT, the polarizing beam splitter of this structure has the light-receiving angular width, the little advantage such as in light weight of volume helps the microminiaturization of light engine.
In other embodiment of the present invention, polarizing beam splitter 76 also can repeat no more here for lens type polarizing beam splitter (consulting Fig. 5).
Fig. 7 is the planar structure schematic diagram of the micro projection optical engine of third embodiment of the invention.The structure of the micro projection optical engine of this micro projection optical engine and first embodiment is basic identical, difference is that the optical shaping lens 57 in the micro projection optical engine shown in Figure 7 are a cylindrical lens, be arranged between X-type color combination lens 47 and the polarizing beam splitter 77, and, be glued on the end face of polarizing beam splitter 77, wherein, the cemented surface of this cylindrical lens and polarizing beam splitter 77 is the plane, surface at the cylindrical lens of X-type color combination lens 47 sides is a cylinder, in the embodiment of the present invention, this cylinder is the projection face, be used for equally received launching spot is compressed, be shaped as and the consistent hot spot of little display floater (not shown) appearance and size ratio, in the embodiment of the present invention, be rectangular light spot.In other words, these optical shaping lens 57 are the plano-convex cylindrical lenses on the end face that is glued at polarizing beam splitter 77.The structure that adopts optical shaping lens 57 and polarizing beam splitter 77 to integrate helps reducing the volume of micro projection optical engine, makes its structure more compact.
In other embodiment of the present invention, cylinder also can be recessed cylinder, is used for received launching spot is stretched, and is shaped as rectangular light spot.
In the embodiment of the present invention, optical shaping lens 57 can be single-column face lens, as Fig. 2 b, also can be bicylinder lens, as Fig. 2 d.The locations of structures of these optical shaping lens 57 with respect to the optical shaping lens 51 of Fig. 1 variation has taken place: the surface at the cylindrical lens of X-type color combination lens 47 sides is a cylinder.Be that the optical shaping lens flip horizontal among Fig. 2 b or Fig. 2 d is realized that promptly the front surface of optical shaping lens is glued on the end face of polarizing beam splitter 77 for 180 ° specifically, X-type color combination lens 47 sides are then closed in the rear surface of optical shaping lens.
In the embodiment of the present invention, red-light source module 17, blue light source module 27, green-light source module 37 and X-type color combination lens 47 are aforesaid arbitrary embodiment, and polarizing beam splitter 77 is the lens type polarizing beam splitter.
Therefore, in the coaxial micro projection optical engine of the present invention, tricolor semiconductor illuminator is by the light source module of three primary colours, X-type color combination lens and optical shaping lens, that brightness output is even, collimation is good, consistent hot spot (rectangular light spot) with little display floater appearance and size ratio, effectively improve the efficiency of light energy utilization of light engine, simple in structure, design cost is cheap; Secondly,, reduce the loss of luminous energy, improve the utilization rate of luminous energy once more by polarization converter is set.In addition, the light of tricolor semiconductor illuminator output is behind polarizing beam splitter, offer little display floater, afterwards, little display floater modulates image light and enters projection lens by polarizing beam splitter once more, output to external screen from projection lens, its optical system design process only relates to lighting device, a polarizing beam splitter, little display floater of monolithic and projecting lens do not relate to other optics, employed optical element is less, simple in structure, compactness, good uniformity, efficiency of light energy utilization height, the Projection Display quality is good, and light path is shorter, and size is less, production cost is lower, satisfies the market microminiaturization, light-weighted demand.
The specific embodiment of the above is a better embodiment of the present invention, be not to limit concrete practical range of the present invention with this, scope of the present invention comprises and is not limited to this specific embodiment, for example, the red light semiconductor light-emitting component, blue-light semiconductor light-emitting component and green glow semiconductor light-emitting elements are one or a plurality of laser chips of arranging with array way, and ruddiness shaping mirror group, blue light shaping mirror group and green glow shaping mirror group include extender lens, and the laser beam enlarging bundle that is used for that laser chip is sent is shaped as and is fit to the required size of described X-type color combination lens.The little display floater of monolithic is a transmissive liquid crystal panel.The equivalence variation that all shapes according to the present invention, structure are done all comprises in protection scope of the present invention.
Claims (19)
1. tricolor semiconductor illuminator comprises:
The red-light source module, its outgoing red light beam;
The blue light source module, its outgoing blue light light beam;
The green-light source module, its outgoing green beam;
X-type color combination lens is arranged at the intersection of the output light path of described red-light source module, blue light source module and green-light source module, and being used to merge described red light beam, blue light light beam and green beam is a branch of light;
It is characterized in that described tricolor semiconductor illuminator also comprises:
At least one optical shaping lens is arranged on the output light path of described X-type color combination lens, and a wherein surface of these optical shaping lens is plane or sphere, and its another surface relative with this surface is a cylinder.
2. tricolor semiconductor illuminator according to claim 1 is characterized in that, described optical shaping lens are the gummed mirror, is formed by spherical lens and cylindrical lens gummed.
3. tricolor semiconductor illuminator according to claim 2 is characterized in that, the cemented surface of described gummed mirror is the plane; Described spherical lens and cylindrical lens are the identical glass lens of refractive index.
4. tricolor semiconductor illuminator according to claim 1 is characterized in that, the plastic lens that described optical shaping lens are formed in one.
5. tricolor semiconductor illuminator according to claim 1 is characterized in that, the quantity of described optical shaping lens is 2, is vertically set on mutually on the output light path of described X-type color combination lens.
6. tricolor semiconductor illuminator according to claim 1 is characterized in that, described optical shaping lens are bicylinder lens, and the formed refractive surface in the cross section of its orthogonal both direction is cylinder.
7. tricolor semiconductor illuminator according to claim 1 is characterized in that described plane or sphere close on described X-type color combination lens.
8. tricolor semiconductor illuminator according to claim 1 is characterized in that, described cylinder is projection face or recessed cylinder.
9. tricolor semiconductor illuminator according to claim 1 is characterized in that, the ruddiness shaping mirror group that described red-light source module comprises the red light semiconductor light-emitting component and is used to collect the received red light beam of also shaping; The blue light shaping mirror group that described blue light source module comprises the blue-light semiconductor light-emitting component and is used to collect the received blue light light beam of also shaping; The green glow shaping mirror group that described green-light source module comprises the green glow semiconductor light-emitting elements and is used to collect the received green beam of also shaping.
10. tricolor semiconductor illuminator according to claim 9, it is characterized in that described red light semiconductor light-emitting component, blue-light semiconductor light-emitting component and green glow semiconductor light-emitting elements are one or a plurality of light-emitting diode chip for backlight unit of arranging with array way.
11. tricolor semiconductor illuminator according to claim 10 is characterized in that, described ruddiness shaping mirror group, blue light shaping mirror group and green glow shaping mirror group include at least one tactic lens.
12. tricolor semiconductor illuminator according to claim 10 is characterized in that, described ruddiness shaping mirror group, blue light shaping mirror group and green glow shaping mirror group include reflective compound parabolic concentrator.
13. tricolor semiconductor illuminator according to claim 9 is characterized in that, described red light semiconductor light-emitting component, blue-light semiconductor light-emitting component and green glow semiconductor light-emitting elements are one or a plurality of laser chips of arranging with array way; Described ruddiness shaping mirror group, blue light shaping mirror group and green glow shaping mirror group include extender lens, and the laser beam enlarging bundle that is used for that described laser chip is sent is shaped as and is fit to the required size of described X-type color combination lens.
14. tricolor semiconductor illuminator according to claim 1 is characterized in that, described X-type color combination lens is tabular X-type color combination lens or light-combining prism.
15. tricolor semiconductor illuminator according to claim 1, it is characterized in that, also comprise on the output light path that is arranged at described optical shaping lens, between perhaps described X-type color combination lens and the optical shaping lens, perhaps be arranged at the polarization converter between described red-light source module, blue light source module, green-light source module and the X-type color combination lens respectively, be used for received non-polarized light is converted to the polarised light of single polarization state.
16. a micro projection optical engine is characterized in that, described micro projection optical engine comprises:
According to any described tricolor semiconductor illuminator in the claim 1 to 15;
Polarizing beam splitter is arranged on the output light path of described tricolor semiconductor illuminator;
Little display floater is used for received polarised light is modulated, and is converted to another polarised light vertical with this polarised light, and makes this another polarised light carry image information; And
Projecting lens is used to receive and throw another polarised light that carries image information.
17. micro projection optical engine according to claim 16 is characterized in that, described little display floater is the little display floater of monolithic, is arranged at a non-adjacent side of described polarizing beam splitter and tricolor semiconductor illuminator; Described polarizing beam splitter is flat polarizing beam splitter or lens type polarizing beam splitter.
18 micro projection optical engines according to claim 16 is characterized in that, described little display floater is silica-based liquid crystal panel or transmissive liquid crystal panel.
19. a micro projection optical engine comprises:
Tricolor semiconductor illuminator comprises:
The red-light source module, its outgoing red light beam;
The blue light source module, its outgoing blue light light beam;
The green-light source module, its outgoing green beam;
X-type color combination lens is arranged at the intersection of the output light path of described red-light source module, blue light source module and green-light source module, and being used to merge described red light beam, blue light light beam and green beam is a branch of light;
Polarizing beam splitter is arranged on the output light path of described tricolor semiconductor illuminator;
The little display floater of monolithic, be arranged at a non-adjacent side of described polarizing beam splitter and tricolor semiconductor illuminator, be used for received polarised light is modulated, be converted to another polarised light vertical, and make this another polarised light carry image information with this polarised light; And
Projecting lens is used to receive and throw another polarised light that carries image information;
It is characterized in that described tricolor semiconductor illuminator also comprises:
Cylindrical lens is arranged between described X-type color combination lens and the polarizing beam splitter, and, be glued on the end face of described polarizing beam splitter, wherein, the cemented surface of described cylindrical lens and described polarizing beam splitter is the plane, is cylinder on the surface of the cylindrical lens of described X-type color combination lens side.
20. micro projection optical engine according to claim 19, it is characterized in that, described tricolor semiconductor illuminator also comprises and being arranged between described X-type color combination lens and the cylindrical lens, perhaps be arranged at the polarization converter between described red-light source module, blue light source module, green-light source module and the X-type color combination lens respectively, be used for received non-polarized light is converted to the polarised light of single polarization state; Described cylinder is projection face or recessed cylinder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910105395A CN101813290A (en) | 2009-02-20 | 2009-02-20 | Tricolor semiconductor illuminator and minitype projection optical engine use same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910105395A CN101813290A (en) | 2009-02-20 | 2009-02-20 | Tricolor semiconductor illuminator and minitype projection optical engine use same |
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| CN101813290A true CN101813290A (en) | 2010-08-25 |
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| CN200910105395A Pending CN101813290A (en) | 2009-02-20 | 2009-02-20 | Tricolor semiconductor illuminator and minitype projection optical engine use same |
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| CN102455583A (en) * | 2010-10-18 | 2012-05-16 | 索尼公司 | Illumination device and display unit |
| CN103900020A (en) * | 2012-12-26 | 2014-07-02 | 深圳市光峰光电技术有限公司 | Light emitting device and stage lamp system |
| CN104516181A (en) * | 2014-12-17 | 2015-04-15 | 广东威创视讯科技股份有限公司 | Lighting system, projector and back projection system |
| CN107085348A (en) * | 2017-06-27 | 2017-08-22 | 深圳市点睛创视技术有限公司 | A kind of Portable projector and its colimated light system |
| CN107454718A (en) * | 2017-08-31 | 2017-12-08 | 赣州光联电子科技有限公司 | A kind of LED light source and optical system with amendment colour temperature function |
| CN107621755A (en) * | 2016-07-14 | 2018-01-23 | 苏斯微技术光刻有限公司 | Light source arrangement and lithographic exposure systems for lithographic exposure systems |
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| CN111796475A (en) * | 2019-04-09 | 2020-10-20 | 成都理想境界科技有限公司 | Light source beam combining module, projection display device and projection display equipment |
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| CN102455583A (en) * | 2010-10-18 | 2012-05-16 | 索尼公司 | Illumination device and display unit |
| CN103900020A (en) * | 2012-12-26 | 2014-07-02 | 深圳市光峰光电技术有限公司 | Light emitting device and stage lamp system |
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| CN104516181A (en) * | 2014-12-17 | 2015-04-15 | 广东威创视讯科技股份有限公司 | Lighting system, projector and back projection system |
| TWI755407B (en) * | 2016-07-14 | 2022-02-21 | 德商蘇士微科技印刷術股份有限公司 | Light source arrangement for a photolithography exposure system and photolithography exposure system |
| CN107621755A (en) * | 2016-07-14 | 2018-01-23 | 苏斯微技术光刻有限公司 | Light source arrangement and lithographic exposure systems for lithographic exposure systems |
| CN107085348A (en) * | 2017-06-27 | 2017-08-22 | 深圳市点睛创视技术有限公司 | A kind of Portable projector and its colimated light system |
| CN107454718A (en) * | 2017-08-31 | 2017-12-08 | 赣州光联电子科技有限公司 | A kind of LED light source and optical system with amendment colour temperature function |
| CN107454718B (en) * | 2017-08-31 | 2023-11-28 | 广州光联电子科技有限公司 | LED lamp light source with color temperature correcting function and optical system |
| CN109814323B (en) * | 2017-11-22 | 2024-01-23 | 德克萨斯仪器股份有限公司 | Asymmetric spot area spoke reduction |
| CN109814323A (en) * | 2017-11-22 | 2019-05-28 | 德克萨斯仪器股份有限公司 | Asymmetric speckle regions spoke reduces |
| CN108121137A (en) * | 2018-02-07 | 2018-06-05 | 全普光电科技(上海)有限公司 | Interactive projection optical system and interactive projection optical device |
| CN111077721A (en) * | 2018-10-19 | 2020-04-28 | 宁波舜宇车载光学技术有限公司 | Vehicle lamp projection device and projection method thereof |
| CN109445240A (en) * | 2018-12-07 | 2019-03-08 | 深圳彩翼光电科技有限公司 | A kind of light source of projector light path system |
| CN111796475A (en) * | 2019-04-09 | 2020-10-20 | 成都理想境界科技有限公司 | Light source beam combining module, projection display device and projection display equipment |
| CN111796475B (en) * | 2019-04-09 | 2022-03-08 | 成都理想境界科技有限公司 | Light source beam combining module, projection display device and projection display equipment |
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Address after: Cui Jing Road Shenzhen City, Guangdong province 518118 Pingshan New District No. 35 No. 1 Building 6 East Applicant after: Butterfly Technology (Shenzhen) Limited Address before: 518057, 301, two, Fengyun technology building, Fifth Industrial Zone, North Ring Road, Shenzhen, Guangdong, Nanshan District Applicant before: Butterfly Technology (Shenzhen) Limited |
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Application publication date: 20100825 |