CN102565896A - Prism system and projector with same - Google Patents
Prism system and projector with same Download PDFInfo
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- CN102565896A CN102565896A CN2010106143053A CN201010614305A CN102565896A CN 102565896 A CN102565896 A CN 102565896A CN 2010106143053 A CN2010106143053 A CN 2010106143053A CN 201010614305 A CN201010614305 A CN 201010614305A CN 102565896 A CN102565896 A CN 102565896A
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- 239000006185 dispersion Substances 0.000 description 12
- 239000011521 glass Substances 0.000 description 11
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/28—Reflectors in projection beam
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
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Abstract
The invention provides a prism system and a projector. The prism system comprises an optical wedge and an isosceles right-angle prim coupled with a rhombus digital micro mirror device (DMD) chip and provided with three vertical planes. The optical wedge is used for receiving incident light and outputting the incident light after refraction, wherein two light through surfaces of the optical wedge are vertical planes. The isosceles right-angle prim is used for outputting the incident light output by the optical wedge after refraction to the rhombus DMD chip and outputting reflected light output by the rhombus DMD chip after reflection. The prism system and the projector can be matched with the rhombus DMD chip to achieve projection.
Description
Technical field
The present invention relates to a kind of prism system and have the projector of this prism system.
Background technology
LED (Light Emitting Diode, light emitting diode) minitype projection machine has advantages such as efficient height, good contrast, life-span length, has very consequence in the field little putting into market.The LED minitype projection machine mainly adopts traditional DMD (Digital Micro mirror Device at present; Digital micromirror elements) chip (quadrature dmd chip) combination prism system is realized projection; In traditional dmd chip, adopt orthogonal pixel arrays to produce 1280 * 720 image; The angle that the long limit of the turning axle of each micro-reflector unit and chip forms is 45 °, and promptly the micro-reflector unit is exclusively used in a graphical pixel on the display device, but in order to realize higher resolution and to reduce system cost synchronously; Novel dmd chip adopts the diamond pixels arrangement mode; Be the rhombus dmd chip, promptly the micro-reflector unit has been rotated 45 ° for traditional dmd chip, and the angle that makes the long limit of turning axle and chip of each micro-reflector unit form is 90 °; Make existing prism system just can't mate, thereby can't realize projection with novel rhombus dmd chip.
Summary of the invention
The present invention just can't can't realize the problem of projection with novel rhombus dmd chip coupling for solving the prism system that exists in the prior art, and providing a kind of can mate with the prism system of realizing projection and the projector with this prism system with the rhombus dmd chip.
The present invention provides a kind of prism system, and said prism system comprises wedge, and with rhombus dmd chip coupling and have the isosceles right-angle prism of three perpendiculars;
Wedge is used to receive incident light, and the output of refraction back, and the plane of incidence and the output face of wherein said wedge are perpendicular;
Isosceles right-angle prism is used for exporting the rhombus dmd chip to after incident light to wedge output reflects, and according to the control of rhombus dmd chip, the reflected light of rhombus dmd chip output is carried out the light beam of output different angles after the total reflection.
The present invention also provides a kind of projector, comprises light source, optical processing unit, prism system, rhombus dmd chip and projection objective;
Light source is used for producing and output beam;
The optical processing unit is used for handling and export incident light from the light beam of light source output;
Prism system is used to receive the incident light of optical processing unit output and carry out exporting after the total reflection;
The rhombus dmd chip with the prism system coupling, is used to receive the incident light of prism system output, and this incident light is reflected, and controls the outbound course of this reflected light in prism system;
Projection objective is used to receive the reflected light that prism system is exported, and exports this reflected light to screen;
Wherein said prism system comprises above-mentioned prism system.
Prism system of the present invention and projector compared with prior art make the angle of incident light take place to get into isosceles right-angle prism after the low-angle deflection through wedge, after the isosceles right-angle prism refraction, export the rhombus dmd chip to; After the rhombus dmd chip receives incident light, can the incident light of its reception be reflected, owing to have the two states that the rhombus dmd chip is opened and closed; When the rhombus dmd chip was in two kinds of different state, the angle of rhombus dmd chip output reflection light also can be different, and the reflected light of rhombus dmd chip output is exported through behind the isosceles right-angle prism; This moment, isosceles right-angle prism can be according to the different reflected light of exporting different angles of the reflected light angle that receives, and promptly with two kinds of different these reflected light of angle output, wedge has two perpendiculars simultaneously; Isosceles right-angle prism has three perpendiculars; Make that the plane of wedge and isosceles right-angle prism and the angle of incident light are certain, therefore when incident light got into this prism system with certain angle, prism system only can be exported the reflected light of two kinds of different angles according to the two states of rhombus dmd chip; Promptly when the rhombus dmd chip is in two kinds of different state; The reflected light of prism system output forms two kinds of contrasts, make the rhombus dmd chip to mate with this prism system, and this prism system is simple in structure; And the light path through this prism system is comparatively simple; Make the number of times of refraction or reflection reduce, thereby reduce the loss of luminous energy, improve the utilization factor of luminous energy.The projector that has this prism system so; The reflected light of two kinds of angles of this prism system output; Wherein a kind of reflected light of angle can export the projection objective of projector to, and projection objective just exports this reflected light to screen, thereby realizes projection; And the reflected light of another angle can't throw away by the projectual mirror, therefore can realize the projection of two kinds of contrasts.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of projector of the present invention.
Fig. 2 is in out first kind of example structure synoptic diagram of state for the rhombus dmd chip of prism system of the present invention.
Fig. 3 is in first kind of example structure synoptic diagram of off status for the rhombus dmd chip of prism system of the present invention.
Fig. 4 is in out second kind of example structure synoptic diagram of state for the rhombus dmd chip of prism system of the present invention.
Fig. 5 is in second kind of example structure synoptic diagram of off status for the rhombus dmd chip of prism system of the present invention.
Fig. 6 is in out the third example structure synoptic diagram of state for the rhombus dmd chip of prism system of the present invention.
Fig. 7 is in the third example structure synoptic diagram of off status for the rhombus dmd chip of prism system of the present invention.
Embodiment
Clearer for technical matters, technical scheme and beneficial effect that the present invention is solved, below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As shown in Figures 2 and 3, the present invention provides the prism system of first embodiment, and said prism system comprises wedge 2, and with rhombus dmd chip 1 coupling and have the isosceles right-angle prism 3 of three perpendiculars;
Wedge 2 is used to receive incident light, and the output of refraction back, and the plane of incidence 21 and the output face 22 of wherein said wedge 2 are perpendicular;
Isosceles right-angle prism 3 is used for exporting rhombus dmd chip 1 to after incident light to wedge 2 output reflects, and according to the control of rhombus dmd chip 1, the reflected light of rhombus dmd chip 1 output is carried out the light beam of output different angles after the total reflection.
In practical implementation, the very little prism in said wedge 2 finger refraction angles, promptly the deflection of smaller angle takes place in incident light through wedge 2 backs.And the isosceles right-angle prism 3 with three perpendiculars to be isosceles right-angle prism 3 be straight prism.
According to optical principle, if at the light beam on optical medium surface to incide this interphase greater than cirtical angle of total reflection degree, then this light beam is by total reflection.When two kinds of media with different refractivity contact with each other; The light beam that propagates into another kind of medium from a kind of medium will decide it whether can enter into another kind of medium according to its incident angle, perhaps can go to turning back in the original medium after all reflecting.For example, K9 glass commonly used, its refractive index n is 1.5164, when it is in the air (refractive index n ' be 1), wherein n and n ' represent the refractive index of interphase both sides glass and air respectively.Suppose light beam with incident angle a when glass incides air, and when the critical conditions of total reflection takes place, the angle of its outgoing from air is a '=90 °.The cirtical angle of total reflection degree of then being tried to achieve by Snell ' Law is arcsin [n ' sin (a ')/sin (a)]=41.3 °, and promptly when the incident angle of the light beam that gets into air from glass during greater than 41.3 °, this incident light just total reflection can take place.
Make the angle of incident light take place to get into isosceles right-angle prism 3 after the low-angle deflection through wedge 2, after isosceles right-angle prism 3 refractions, export rhombus dmd chip 1 to, after rhombus dmd chip 1 receives incident light; Can reflect the incident light of its reception, because the digital micro-mirror unit of rhombus dmd chip 1 can be at+12 ° to-12 ° angular range internal reflection incident light, so rhombus dmd chip 1 two states that has out and close; When rhombus dmd chip 1 was in two kinds of different state, the catoptrical angle of rhombus dmd chip 1 output also can be different, and the reflected light of rhombus dmd chip 1 output is through isosceles right-angle prism 3 outputs; Isosceles right-angle prism 3 is according to the different reflected light of exporting different angles of the catoptrical angle that receives; Promptly with two kinds of different these reflected light of angle output, wedge 2 has two perpendiculars simultaneously, and isosceles right-angle prism 3 has three perpendiculars; Said perpendicular is specially the plane perpendicular to paper as shown in Figure 1; Make that the wedge 2 and the plane of isosceles right-angle prism 3 and the angle of incident light are certain, therefore when incident light got into this prism system with certain angle, prism system only can be exported the reflected light of two kinds of different angles according to the two states of rhombus dmd chip 1; Promptly when rhombus dmd chip 1 is in two kinds of different state; The reflected light of prism system output forms two kinds of contrasts, make rhombus dmd chip 1 to mate with this prism system, and this prism system is simple in structure; And the light path through this prism system is comparatively simple; Make the number of times of refraction or reflection reduce, thereby reduce the loss of luminous energy, improve the utilization factor of luminous energy.
In order to realize projection, as shown in Figure 1, the present invention also provides the projector of a kind of embodiment, comprises light source 4, optical processing unit, prism system, rhombus dmd chip 1 and projection objective 6;
The optical processing unit is used for handling and export incident light from the light beam of light source output;
Prism system is used to receive the incident light of optical processing unit output and carry out exporting after the total reflection;
Rhombus dmd chip 1 with the prism system coupling, is used to receive the incident light of prism system output, and this incident light is reflected, and controls the outbound course of this reflected light in prism system;
Wherein said prism system comprises having wedge 2, and with rhombus dmd chip 1 coupling and have the isosceles right-angle prism 3 of three perpendiculars;
Wedge 2 is used to receive incident light, and the output of refraction back, and the plane of incidence 21 and the output face 22 of wherein said wedge 2 are perpendicular;
Isosceles right-angle prism 3 is used for exporting rhombus dmd chip 1 to after incident light to wedge 2 output reflects, and according to the control of rhombus dmd chip 1, the reflected light of rhombus dmd chip 1 output is carried out the light beam of output different angles after the total reflection.
Because the two states that rhombus dmd chip 1 has out and closes; When state that rhombus dmd chip 1 is in out; Be that digital micro-mirror unit and plane, rhombus dmd chip 1 place formation angle is+12 °, rhombus dmd chip 1 receives the incident light of wedge 2 outputs so, after 1 reflection of rhombus dmd chip, exports the reflected light of setting vertically; Export reflected light to the projection objective 6 of an angle again through the reflection of isosceles right-angle prism 3; And when digital micro-mirror unit and plane, rhombus dmd chip 1 place formed angle and be-12 °, another angle reflected light of refraction output through second prism did not export projection objective 6 to again, promptly with the above-mentioned prism system of the rhombus dmd chip 1 coupling reflected light according to two angles of state output of rhombus dmd chip 1; So when wherein the reflected light of an angle exports projection objective 6 to; Projection objective 6 exports this reflected light to screen, thereby realizes projection, and the reflected light of another angle must export projection objective 6 to; Therefore can realize the projection of two kinds of contrasts, promptly above-mentioned prism system can mate with rhombus dmd chip 1.
In practical implementation, said light source 4 is specially LED (Light Emitting Diode, light emitting diode) three-color light source, is used for producing and exporting R, G, B three coloured light, promptly exports three coloured light of red, green, blue.
Further, said optical processing unit comprises that collimation lens set part 51, three looks synthesize lens 52, compound eye lens group 53 and integration lens 54;
Three looks synthesize lens 52, are used for the synthetic directional light that mixes of R, G, the B three look directional lights of the output of collimation lens assembly is also exported;
Fly's-eye lens assembly 53 is used to receive the directional light of three looks synthetic lens output, and exports the directional light with the hot spot that matees with rhombus dmd chip 1;
In practical implementation; Light source the place ahead of every kind of color is provided with one group of collimation lens assembly 51; The diverging light of every kind of color is become directional light, can improve the utilization factor of led light source, the directional light with three kinds of colors mixes the output of formation mixing directional light through three looks synthetic lens 52 again; Can be spatially the structure of reduced projection appearance effectively, can improve the light utilization efficiency of projector simultaneously.And can carry out shaping to the hot spot that mixes directional light through fly's-eye lens assembly 53, if it is bigger than rhombus dmd chip 1 to output to the hot spot of rhombus dmd chip 1, so only export the utilization that is reflected of luminous energy on the rhombus dmd chip 1 to; Remaining luminous energy all can lose; Under the preferable case, with the state of spot shaping one-tenth, if the hot spot that exports on the rhombus dmd chip 1 is inhomogeneous with the form fit of rhombus dmd chip 1; The light that finally projects also is uneven; Can influence drop shadow effect, image will occur bright on one side, one side dark effect.In order to improve the efficiency of light energy utilization and projected picture homogeneity, therefore can the hot spot of mixing directional light be become uniform hot spot and this hot spot through fly's-eye lens assembly 53 can mate with rhombus dmd chip 1.And then the light beam of fly's-eye lens assembly 53 output converged through integration lens 54 export prism system to, promptly export wedge 2 to.
Further, in the prism system of first kind of embodiment, three perpendiculars of said isosceles right-angle prism 3 comprise first plane 31, second plane 32 and the 3rd plane 33;
The 3rd plane 33, vertical each other with said second plane 32, be used to export the reflected light of first plane, 31 outputs.
Can find out from above-mentioned scheme; First plane 31 is the hypotenuse of the right angled isosceles triangle shown on Fig. 2; And second plane 32 and the 3rd plane 33 are the right-angle side of right angled isosceles triangle; Therefore the angle of first plane 31 and 32 formation of second plane is 45 °, and the angle that first plane 31 and the 3rd plane 33 form is 45 °.When rhombus dmd chip 1 is in out state, as shown in Figure 2, the incident light of the 31 pairs of wedges in first plane, 2 outputs reflects back output; After the incident light refraction of second plane 32 with the output of first plane 31, exporting rhombus dmd chip 1 to, is+12 ° because the digital micro-mirror unit forms angle with plane, rhombus dmd chip 1 place, at this moment rhombus dmd chip 1 output reflection light with the angle on vertical second plane 32 almost through second plane 32 after; Export on first plane 31; In this isosceles right-angle prism, the angle that this reflected light and first plane 31 form is greatly about 45 ° so, and this angle is greater than the cirtical angle of total reflection; Therefore this reflected light exports the 3rd plane 33 to behind inner full-reflection on first plane 31; Through the vertical reflected light of the 3rd plane 33 outputs, projection objective 6 exports this reflected light to screen, thereby realizes projection.
When rhombus dmd chip 1 is in off status; As shown in Figure 3; The incident light of the 31 pairs of wedges in first plane, 2 outputs reflects back output; After the incident light refraction of second plane 32 with the output of first plane 31, exporting rhombus dmd chip 1 to, is-12 ° because the digital micro-mirror unit forms angle with plane, rhombus dmd chip 1 place, and the reflected light that this moment, rhombus dmd chip 1 was exported exports second plane 32 to 36 ° angle almost; After reflecting, the reflected light of the 32 pairs of rhombus dmd chips in said second plane, 1 output exports the 3rd plane 33 to; Then the reflected light of 33 pairs second planes, the 3rd plane, 32 outputs reflects the reflected light of another angle of back output, can not throw by projectual mirror 6, so this projector can reach higher contrast ratio.
Further, the plane of incidence 21 is used to receive incident light, and the output of refraction back;
After reflecting through the plane of incidence 21, because the plane of incidence 21 of said wedge 2 forms less angle with said output face 22, the deflection of smaller angle also only can take place in the incident light of the incident light of the plane of incidence 21 outputs after output face 22 refractions.In the present embodiment; The said plane of incidence 21 is 6-8 ° with the angle that output face 22 forms; Make incident light through these wedge 2 refraction back incident lights; The incident optical energy of first plane 31 of process isosceles right-angle prism 3 and the 32 refraction back outputs of second plane and the angle of plane, rhombus dmd chip 1 place formation are almost 24 ° again, and when rhombus dmd chip 1 was in out state, it exported the reflected light vertical with its plane, place so; And when rhombus dmd chip 1 was in out state, the angle that the reflected light of its output and second plane form was almost 36 °.
Further, in order to improve the imaging effect of projector, wedge 2 all should adopt low-refraction with isosceles right-angle prism 3; The glass material of high dispersion values, refractive index and dispersion range can be at n < 1.55, v>50; In the present embodiment; Wedge 2 and isosceles right-angle prism 3 all adopt the glass material of BK7 or K9 model, and its material refractive index and chromatic dispersion are respectively n=1.5164, v=64.1333, thereby further improve the imaging effect of projector.
Further, in order to reduce from the air to the wedge by 2 optical energy loss, the said plane of incidence 21 is vertical each other with said incident light; The incident light and the plane of incidence 21 form 90 ° angle so; Just can get in the wedge 2 along the direct transmission of the normal of the plane of incidence 21, the loss of luminous energy is less and the deflection of angle can not take place, if; The said plane of incidence 21 and said incident light out of plumb; Thereby incident light might reflect or through the plane of incidence 21 angular deflections take place, and makes from the air to the wedge 2 optical energy loss increase and makes the deflection of incident light generation wide-angle, and therefore the said plane of incidence 21 is vertical each other with said incident light.Make from the air to the wedge 2 optical energy loss reduce and can cooperate with said rhombus dmd chip 1.
In practical implementation; The present invention also provides the prism system of second kind of embodiment; Like Fig. 4 and shown in Figure 5, the incident angle of light in the incident light and isosceles right-angle prism 3 can not deflect in the wedge 2 in order to make, and said output face 22 is with said first plane, 31 couplings and laterally arrange.In practical implementation, output face 22 is coupled through the clearance layer with the coupling on said first plane 31, is convenient to the installation and removal between output face 22 and said first plane 31.In the present embodiment, the said plane of incidence 21 is 2-5 ° with the angle that output face 22 forms, and makes this wedge 2 to cooperate with said rhombus dmd chip 1.
Further, in order to improve the imaging effect of projector, wedge 2 all should adopt low-refraction with isosceles right-angle prism 3; The glass material of high dispersion values, refractive index and dispersion range can be at n < 1.55, v>50; In the present embodiment; Wedge 2 and isosceles right-angle prism 3 all adopt the glass material of BK7 or K9 model, and its material refractive index and chromatic dispersion are respectively n=1.5164, v=64.1333, thereby further improve the imaging effect of projector.
In practical implementation, the present invention also provides the prism system of the third embodiment, and like Fig. 6 and shown in Figure 7, the said integration lens 54 that is used for converging beam comprises arcwall face 541 and straight plane 542,
Arcwall face 541 is used to receive incident light and converges said incident light;
Further, said straight plane 542 is bonding with the plane of incidence 21 applyings of said wedge 2, because integration lens 54 and said wedge 2 couplings; Promptly be coupled through the clearance layer; But the coupling of carrying out through the clearance layer between the plane of incidence 21 of straight plane 542 and said wedge 2, integration lens 54 just is easy to separate with said wedge 2, under the preferable case; Said straight plane 542 is fitted bonding with the said plane of incidence 21 through optical cement; Make integration lens 54 and said wedge 2 be completed into an integral body, further improve the reliability of prism system, and the structure of simplifying prism system.For said rhombus dmd chip 1 can be cooperated with this prism system, in practical implementation, said rhombus dmd chip 1 is positioned near the getting final product of light beam convergent point of integration lens 54.
Further, in the present embodiment, the said plane of incidence 21 is 6-8 ° with the angle that output face 22 forms, and makes this wedge 2 to cooperate with said rhombus dmd chip 1.
Further, in order to improve the imaging effect of projector, wedge 2 all should adopt low-refraction with isosceles right-angle prism 3; The glass material of high dispersion values, refractive index and dispersion range can be at n < 1.55, v>50; In the present embodiment; Wedge 2 and isosceles right-angle prism 3 all adopt the glass material of BK7 or K9 model, and its material refractive index and chromatic dispersion are respectively n=1.5164, v=64.1333, thereby further improve the imaging effect of projector.
Further, for the technology that make to realize prism system is simpler, said integration lens 54 can also be one-body molded with said wedge 2; The material of wedge 2 is the same with the material of integration lens 54 so at this moment; Adopt low-refraction, the plastic material of high dispersion values, its refractive index and dispersion range can be at n < 1.55; V>under 50 preferable case; Adopt the plastic material of PMMA model, its refractive index and chromatic dispersion are respectively n=1.4918, v=57.3274, and isosceles right-angle prism 3 still adopts the glass material of BK7 or K9 model.
Further, when said integration lens 54 and said wedge 2 were one-body molded, in order to make this wedge 2 to cooperate with said rhombus dmd chip 1, the said plane of incidence 21 was 9-14 ° with the angle of output face 22 formation.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a prism system is characterized in that, said prism system comprises wedge, and with rhombus dmd chip coupling and have the isosceles right-angle prism of three perpendiculars;
Wedge is used to receive incident light, and the output of refraction back, and the plane of incidence and the output face of wherein said wedge are perpendicular;
Isosceles right-angle prism is used for exporting the rhombus dmd chip to after incident light to wedge output reflects, and according to the control of rhombus dmd chip, the reflected light of rhombus dmd chip output is carried out the light beam of output different angles after the total reflection.
2. prism system as claimed in claim 1 is characterized in that, said three perpendiculars comprise first plane, second plane and the 3rd plane;
First plane is used for the incident light of wedge output is reflected back output;
Second plane, parallel with the rhombus dmd chip, be used for exporting the rhombus dmd chip to after the incident light refraction with first plane output, and export first plane to after the reflected light of rhombus dmd chip output reflected;
First plane also is used for the reflected light of second plane output is carried out total reflection;
The 3rd plane, vertical each other with said second plane, be used to export the reflected light of first plane output.
3. prism system as claimed in claim 1 is characterized in that, the angle that the plane of incidence of said wedge and output face form is 6-8 °.
4. prism system as claimed in claim 1 is characterized in that, the plane of incidence of said wedge is vertical each other with said incident light.
5. prism system as claimed in claim 1 is characterized in that, the output face of said wedge and said first plane are coupled and laterally arrange.
6. prism system as claimed in claim 5 is characterized in that, the angle that the said plane of incidence and output face form is 2-5 °.
7. a projector is characterized in that, comprises light source, optical processing unit, prism system, rhombus dmd chip and projection objective;
Light source is used for producing and output beam;
The optical processing unit is used for handling and export incident light from the light beam of light source output;
Prism system is used to receive the incident light of optical processing unit output and carry out exporting after the total reflection;
The rhombus dmd chip with the prism system coupling, is used to receive the incident light of prism system output, and this incident light is reflected, and controls the outbound course of this reflected light in prism system;
Projection objective is used to receive the reflected light that prism system is exported, and exports this reflected light to screen;
Wherein said prism system is like any described prism system of claim 1-7.
8. projector as claimed in claim 7 is characterized in that light source is the LED three-color light source, is used for producing and exporting R, G, B three coloured light.
9. projector as claimed in claim 8 is characterized in that, said optical processing unit comprises the collimation lens set part, and three looks synthesize lens, fly's-eye lens assembly and integration lens;
The collimation lens assembly is used to receive the light beam from the output of LED three-color light source, and exports R, G, B three look directional lights;
Three looks synthesize lens, are used for the synthetic directional light that mixes of R, G, the B three look directional lights of the output of collimation lens assembly is also exported;
The fly's-eye lens assembly is used to receive the directional light of three looks synthetic lens output, and exports the directional light with rectangular light spot;
Integration lens is used for directional light with the output of said fly's-eye lens assembly and converges and export prism system to.
10. projector as claimed in claim 9 is characterized in that, integration lens comprises arcwall face and straight plane;
Arcwall face is used to receive incident light and converges said incident light;
Straight plane with said plane of incidence coupling, is used to receive the plane of incidence that exports said wedge after incident light and the refraction of arcwall face output to.
11. projector as claimed in claim 10 is characterized in that, the plane of incidence of said straight plane and said wedge is fitted bonding.
12. projector as claimed in claim 10 is characterized in that, said integration lens and said wedge are one-body molded.
13. projector as claimed in claim 12 is characterized in that, the angle that the said plane of incidence and output face form is 9-14 °.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010614305.3A CN102565896B (en) | 2010-12-30 | 2010-12-30 | Prism system and projector with same |
| PCT/CN2011/084769 WO2012089113A1 (en) | 2010-12-30 | 2011-12-27 | Prism system and projector comprising the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010614305.3A CN102565896B (en) | 2010-12-30 | 2010-12-30 | Prism system and projector with same |
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| Publication Number | Publication Date |
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| CN102565896A true CN102565896A (en) | 2012-07-11 |
| CN102565896B CN102565896B (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010614305.3A Active CN102565896B (en) | 2010-12-30 | 2010-12-30 | Prism system and projector with same |
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| Country | Link |
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| CN (1) | CN102565896B (en) |
| WO (1) | WO2012089113A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105589285A (en) * | 2016-02-19 | 2016-05-18 | 苏州佳世达光电有限公司 | Projector |
| CN109375464A (en) * | 2018-12-28 | 2019-02-22 | 邓荣 | It is totally reflected projector |
| CN114326277A (en) * | 2020-10-12 | 2022-04-12 | 扬明光学股份有限公司 | Projection device and manufacturing method thereof |
| CN114578639A (en) * | 2020-12-01 | 2022-06-03 | 宁波舜宇车载光学技术有限公司 | Projection system, projection method and manufacturing method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6201619B2 (en) * | 2013-10-21 | 2017-09-27 | コニカミノルタ株式会社 | Three-plate optical system and projector |
| CN106842510B (en) * | 2017-03-30 | 2019-06-25 | 明基智能科技（上海）有限公司 | Optical projection system |
| CN111624840B (en) * | 2020-06-24 | 2021-11-09 | 成都极米科技股份有限公司 | Light source device and projection display equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1790093A (en) * | 2004-12-17 | 2006-06-21 | 扬明光学股份有限公司 | Projection display system |
| US20060132727A1 (en) * | 2004-12-21 | 2006-06-22 | Lg Electronics Inc. | Projection lens unit and thin projector using the same |
| CN101131531A (en) * | 2006-08-22 | 2008-02-27 | 普立尔科技股份有限公司 | Projector with laser LED as its light source and light source device thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7701519B2 (en) * | 2003-06-19 | 2010-04-20 | Texas Instruments Incorporated | Display system and signal processing using diamond-shaped DMDs |
| KR100685966B1 (en) * | 2004-12-21 | 2007-02-23 | 엘지전자 주식회사 | Project device in Projector |
| KR20080109409A (en) * | 2007-06-13 | 2008-12-17 | 삼성전자주식회사 | Projection display apparatus and display method thereof |
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2010
- 2010-12-30 CN CN201010614305.3A patent/CN102565896B/en active Active
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2011
- 2011-12-27 WO PCT/CN2011/084769 patent/WO2012089113A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1790093A (en) * | 2004-12-17 | 2006-06-21 | 扬明光学股份有限公司 | Projection display system |
| US20060132727A1 (en) * | 2004-12-21 | 2006-06-22 | Lg Electronics Inc. | Projection lens unit and thin projector using the same |
| CN101131531A (en) * | 2006-08-22 | 2008-02-27 | 普立尔科技股份有限公司 | Projector with laser LED as its light source and light source device thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105589285A (en) * | 2016-02-19 | 2016-05-18 | 苏州佳世达光电有限公司 | Projector |
| CN105589285B (en) * | 2016-02-19 | 2018-04-17 | 苏州佳世达光电有限公司 | Projector |
| CN109375464A (en) * | 2018-12-28 | 2019-02-22 | 邓荣 | It is totally reflected projector |
| CN114326277A (en) * | 2020-10-12 | 2022-04-12 | 扬明光学股份有限公司 | Projection device and manufacturing method thereof |
| CN114578639A (en) * | 2020-12-01 | 2022-06-03 | 宁波舜宇车载光学技术有限公司 | Projection system, projection method and manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012089113A1 (en) | 2012-07-05 |
| CN102565896B (en) | 2015-06-24 |
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