CN102565896B - Prism system and projector with same - Google Patents
Prism system and projector with same Download PDFInfo
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- CN102565896B CN102565896B CN201010614305.3A CN201010614305A CN102565896B CN 102565896 B CN102565896 B CN 102565896B CN 201010614305 A CN201010614305 A CN 201010614305A CN 102565896 B CN102565896 B CN 102565896B
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- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 238000003786 synthesis reaction Methods 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 description 14
- 239000006185 dispersion Substances 0.000 description 12
- 239000011521 glass Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 6
- 230000016507 interphase Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
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- 239000003086 colorant Substances 0.000 description 1
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- 229910003460 diamond Inorganic materials 0.000 description 1
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- 230000009365 direct transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
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- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
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Classifications
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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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- Projection Apparatus (AREA)
- Optical Elements Other Than Lenses (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
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 there is the projector of this prism system.
Background technology
LED(Light Emitting Diode, light emitting diode) advantage such as minitype projection machine has that efficiency is high, good contrast, life-span are long, micro-putting into market in field, there is very consequence.Current LED minitype projection machine mainly adopts traditional DMD(Digital Micro mirror Device, digital micromirror elements) chip (orthogonal dmd chip) in conjunction with prism system realize project, orthogonal pixel arrays is adopted to produce the image of 1280 × 720 in traditional dmd chip, the angle that the turning axle of each micro-reflector unit and the long limit of chip are formed is 45 °, namely micro-reflector unit is dedicated to a graphical pixel on display device, but in order to realize higher resolution and synchronously reduce system cost, novel dmd chip adopts diamond pixels arrangement mode, for rhombus dmd chip, namely micro-reflector unit be have rotated 45 ° for traditional dmd chip, the angle that the long limit of the turning axle of each micro-reflector unit and chip is formed is 90 °, existing prism system just cannot be mated with novel rhombus dmd chip, thus projection cannot be realized.
Summary of the invention
The present invention solves in prior art the prism system existed just to mate with novel rhombus dmd chip and cannot realize the problem that projects, provides a kind of and can mate to realize the prism system projected and the projector with this prism system with rhombus dmd chip.
The invention provides a kind of prism system, described prism system comprises wedge, and is coupled with rhombus dmd chip and has the isosceles right-angle prism of three perpendiculars;
Wedge, for receiving incident light, and export after refraction, the plane of incidence and the output face of wherein said wedge are perpendicular;
Isosceles right-angle prism, exports rhombus dmd chip to after the incident light for exporting wedge reflects, and according to the control of rhombus dmd chip, and the reflected light exported rhombus dmd chip is totally reflected the light beam of rear output different angles.
The present invention also provides a kind of projector, comprises light source, light processing unit, prism system, rhombus dmd chip and projection objective;
Light source, for generation of and output beam;
Light processing unit, for processing the light beam exported from light source and exporting incident light;
Prism system, for receiving the incident light of light processing unit output and carrying out being totally reflected rear output;
Rhombus dmd chip, is coupled with prism system, for receiving the incident light that prism system exports, and reflects this incident light, and controls the outbound course of this reflected light in prism system;
Projection objective, for receiving the reflected light that prism system exports, and exports this reflected light to screen;
Wherein said prism system comprises above-mentioned prism system.
Prism system of the present invention and projector are compared with prior art, isosceles right-angle prism is entered after making the angle of incident light that low-angle deflection occur by wedge, rhombus dmd chip is exported to after isosceles right-angle prism refraction, after rhombus dmd chip receives incident light, the incident light that it receives can be reflected, owing to having the two states that rhombus dmd chip is opened and closed, when rhombus dmd chip is in two kinds of different states, the angle of rhombus dmd chip output reflection light also can be different, the reflected light that rhombus dmd chip exports exports after isosceles right-angle prism, now isosceles right-angle prism can export the reflected light of different angles according to the reflected light angle difference received, namely this reflected light is exported with two kinds of different angles, wedge has two perpendiculars simultaneously, isosceles right-angle prism has three perpendiculars, the plane of wedge and isosceles right-angle prism and the angle of incident light is made to be certain, therefore when incident light enters this prism system with certain angle, prism system only can export the reflected light of two kinds of different angles according to the two states of rhombus dmd chip, namely when rhombus dmd chip is in two kinds of different states, the reflected light that prism system exports forms two kinds of contrasts, rhombus dmd chip can be mated with this prism system, and this prism system structure is simple, and it is comparatively simple by the light path of this prism system, the number of times reflecting or reflect is reduced, thus reduce light loss of energy, improve the utilization factor of luminous energy.So there is the projector of this prism system, this prism system exports the reflected light of two kinds of angles, wherein a kind of reflected light of angle can export the projection objective of projector to, projection objective just exports this reflected light to screen, thus realize projection, and the reflected light of another angle cannot be projected object lens projects, the projection of two kinds of contrasts therefore can be realized.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of projector of the present invention.
Fig. 2 is the first example structure schematic diagram that the rhombus dmd chip of prism system of the present invention is in open state.
Fig. 3 is the first example structure schematic diagram that the rhombus dmd chip of prism system of the present invention is in off status.
Fig. 4 is the second example structure schematic diagram that the rhombus dmd chip of prism system of the present invention is in open state.
Fig. 5 is the second example structure schematic diagram that the rhombus dmd chip of prism system of the present invention is in off status.
Fig. 6 is the third example structure schematic diagram that the rhombus dmd chip of prism system of the present invention is in open state.
Fig. 7 is the third example structure schematic diagram that the rhombus dmd chip of prism system of the present invention is in off status.
Embodiment
In order to make technical matters solved by the invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figures 2 and 3, the invention provides the prism system of the first embodiment, described prism system comprises wedge 2, and is coupled with rhombus dmd chip 1 and has the isosceles right-angle prism 3 of three perpendiculars;
Wedge 2, for receiving incident light, and export after refraction, the plane of incidence 21 and the output face 22 of wherein said wedge 2 are perpendicular;
Isosceles right-angle prism 3, exports rhombus dmd chip 1 to after the incident light for exporting wedge 2 reflects, and according to the control of rhombus dmd chip 1, and the reflected light exported rhombus dmd chip 1 is totally reflected the light beam of rear output different angles.
In concrete enforcement, described wedge 2 refers to the prism that refraction angle is very little, and namely the deflection of smaller angle occurs incident light after wedge 2.And the isosceles right-angle prism 3 i.e. isosceles right-angle prism 3 with three perpendiculars is straight prism.
According to optical principle, if the light beam on optical medium surface incides this interphase to be greater than cirtical angle of total reflection degree, then this light beam is totally reflected.When the medium that two kinds have different refractivity contacts with each other, will be decided it according to its incident angle from a kind of Medium Propagation to the light beam of another kind of medium and whether can enter into another kind of medium, or can go to turning back in original medium after whole reflection.Such as, conventional K9 glass, its refractive index n is 1.5164, and when it to be in air (refractive index n ' be 1), wherein n and n ' represents the refractive index of interphase both sides glass and air respectively.When supposing that light beam incides air with incident angle a from glass, and when there is the critical conditions be totally reflected, 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 °, namely, when the incident angle of the light beam entering air from glass is greater than 41.3 °, this incident light just can be totally reflected.
Isosceles right-angle prism 3 is entered after making the angle of incident light that low-angle deflection occur by wedge 2, rhombus dmd chip 1 is exported to after isosceles right-angle prism 3 reflects, after rhombus dmd chip 1 receives incident light, the incident light that it receives can be reflected, because the digital micro-mirror unit of rhombus dmd chip 1 can at the angular range internal reflection incident light of+12 ° to-12 °, therefore rhombus dmd chip 1 two states that has out and close, when rhombus dmd chip 1 is in two kinds of different states, the angle of the reflected light that rhombus dmd chip 1 exports also can be different, the reflected light that rhombus dmd chip 1 exports exports through isosceles right-angle prism 3, isosceles right-angle prism 3 exports the reflected light of different angles according to the angle difference of the reflected light received, namely this reflected light is exported with two kinds of different angles, wedge 2 has two perpendiculars simultaneously, isosceles right-angle prism 3 has three perpendiculars, described perpendicular is specially as shown in Figure 1 perpendicular to the plane of paper, the plane of wedge 2 and isosceles right-angle prism 3 and the angle of incident light is made to be certain, therefore when incident light enters this prism system with certain angle, prism system only can export the reflected light of two kinds of different angles according to the two states of rhombus dmd chip 1, namely when rhombus dmd chip 1 is in two kinds of different states, the reflected light that prism system exports forms two kinds of contrasts, rhombus dmd chip 1 can be mated with this prism system, and this prism system structure is simple, and it is comparatively simple by the light path of this prism system, the number of times reflecting or reflect is reduced, thus reduce light loss of energy, improve the utilization factor of luminous energy.
In order to realize projection, as shown in Figure 1, the present invention also provides a kind of projector of embodiment, comprises light source 4, light processing unit, prism system, rhombus dmd chip 1 and projection objective 6;
Light source 4, for generation of and output beam;
Light processing unit, for processing the light beam exported from light source and exporting incident light;
Prism system, for receiving the incident light of light processing unit output and carrying out being totally reflected rear output;
Rhombus dmd chip 1, is coupled with prism system, for receiving the incident light that prism system exports, and reflects this incident light, and controls the outbound course of this reflected light in prism system;
Projection objective 6, for receiving the reflected light that prism system exports, and exports this reflected light to screen;
Wherein said prism system comprises and has wedge 2, and is coupled with rhombus dmd chip 1 and has the isosceles right-angle prism 3 of three perpendiculars;
Wedge 2, for receiving incident light, and export after refraction, the plane of incidence 21 and the output face 22 of wherein said wedge 2 are perpendicular;
Isosceles right-angle prism 3, exports rhombus dmd chip 1 to after the incident light for exporting wedge 2 reflects, and according to the control of rhombus dmd chip 1, and the reflected light exported rhombus dmd chip 1 is totally reflected the light beam of rear output different angles.
Due to the two states that rhombus dmd chip 1 has out and closes, when the state that rhombus dmd chip 1 is in out, namely digital micro-mirror unit and rhombus dmd chip 1 place plane form angle and are+12 °, so rhombus dmd chip 1 receives the incident light that wedge 2 exports, the reflected light arranged vertically is exported after rhombus dmd chip 1 reflects, reflection again through isosceles right-angle prism 3 exports the reflected light of an angle to projection objective 6, and when to form angle be-12 ° for digital micro-mirror unit and rhombus dmd chip 1 place plane, export another angle reflection light through the refraction of the second prism again and do not export projection objective 6 to, namely the above-mentioned prism system be coupled with rhombus dmd chip 1 is according to the reflected light of State-output two angles of rhombus dmd chip 1, so when the reflected light of a wherein angle exports projection objective 6 to, projection objective 6 exports this reflected light to screen, thus realize projection, the reflected light of another angle must export projection objective 6 to, therefore the projection of two kinds of contrasts can be realized, namely above-mentioned prism system can mate with rhombus dmd chip 1.
In concrete enforcement, described light source 4 is specially LED (Light Emitting Diode, light emitting diode) three-color light source, for generation of with output R, G, B tri-coloured light, namely export three coloured light of red, green, blue.
Further, described smooth processing unit comprises collimator lens assembly 51, three look synthesis lens 52, compound eye lens group 53 and integration lens 54;
Collimator lens assembly 51, for receiving the light beam exported from LED three-color light source, and exports R, G, B tri-look directional light;
Three looks synthesis lens 52, for collimator lens assembly is exported R, G, B tri-the synthesis of look directional light mix directional light exporting;
Fly's-eye lens assembly 53, for receiving the directional light that three look synthesis lens export, and exports the directional light with the hot spot mated with rhombus dmd chip 1;
Integration lens 54, the directional light for being exported by described fly's-eye lens assembly 53 converges and exports prism system to.
In concrete enforcement, the light source front of often kind of color arranges one group of collimator lens assembly 51, the diverging light of often kind of color is become directional light, the utilization factor of LED light source can be improved, again the directional light of three kinds of colors is mixed to form mixing directional light by three look synthesis lens 52 to export, can the structure of spatially reduced projection instrument effectively, the light utilization efficiency of projector can be improved simultaneously.And shaping can be carried out to the hot spot of mixing directional light by fly's-eye lens assembly 53, if the hot spot outputting to rhombus dmd chip 1 is larger than rhombus dmd chip 1, the luminous energy so only exported on rhombus dmd chip 1 is reflected utilization, remaining luminous energy all can lose, under preferable case, spot shaping is become the state with the form fit of rhombus dmd chip 1, if the hot spot exported on rhombus dmd chip 1 is uneven, the light finally projected also is uneven, drop shadow effect can be affected, image just there will be bright on one side, dark effect.In order to improve the efficiency of light energy utilization and projected picture homogeneity, therefore the hot spot of mixing directional light can be become uniform hot spot and this hot spot can mate with rhombus dmd chip 1 by fly's-eye lens assembly 53.And then the light beam to be exported by fly's-eye lens assembly 53 is converged by integration lens 54 and exports prism system to, namely export wedge 2 to.
Further, in the prism system of the first embodiment, three perpendiculars of described isosceles right-angle prism 3 comprise the first plane 31, second plane 32 and the 3rd plane 33;
First plane 31, reflects rear output for the incident light exported wedge 2;
Second plane 32, parallel with rhombus dmd chip, export rhombus dmd chip 1 to for after the refracting light incident that the first plane 31 exported, and export the first plane 31 to after the reflected light that rhombus dmd chip 1 exports is reflected;
First plane 31, the reflected light also for exporting the second plane 32 is totally reflected;
3rd plane 33, mutually vertical with described second plane 32, for exporting the reflected light that the first plane 31 exports.
As can be seen from above-mentioned scheme, first plane 31 is the hypotenuse of the right angled isosceles triangle shown on Fig. 2, and the second plane 32 and the 3rd plane 33 are the right-angle side of right angled isosceles triangle, therefore the angle that the first plane 31 and the second plane 32 are formed is 45 °, and the angle that the first plane 31 and the 3rd plane 33 are formed is 45 °.When rhombus dmd chip 1 is in open state, as shown in Figure 2, the incident light that first 31 pairs, plane wedge 2 exports reflects rear output, rhombus dmd chip 1 is exported to after the refracting light incident that the first plane 31 exports by the second plane 32, be+12 ° because digital micro-mirror unit and rhombus dmd chip 1 place plane form angle, now rhombus dmd chip 1 output reflection light with the angle of almost vertical second plane 32 after the second plane 32, export in the first plane 31, so in this isosceles right-angle prism, the angle that this reflected light and the first plane 31 are formed is greatly about 45 °, this angle is greater than the cirtical angle of total reflection, therefore this reflected light exports the 3rd plane 33 to after inner full-reflection in the first plane 31, vertical reflected light is exported through the 3rd plane 33, projection objective 6 exports this reflected light to screen, thus realize projection.
When rhombus dmd chip 1 is in off status, as shown in Figure 3, the incident light that first 31 pairs, plane wedge 2 exports reflects rear output, rhombus dmd chip 1 is exported to after the refracting light incident that the first plane 31 exports by the second plane 32, be-12 ° because digital micro-mirror unit and rhombus dmd chip 1 place plane form angle, now the reflected light that exports of rhombus dmd chip 1 exports the second plane 32 to the almost angle of 36 °, the 3rd plane 33 is exported to after the reflected light that described second plane 32 pairs of rhombus dmd chips 1 export reflects, then the 3rd plane 33 reflects the reflected light of rear another angle of output to the reflected light that the second plane 32 exports, object lens 6 can not be projected project, therefore this projector can reach higher contrast.
Further, the plane of incidence 21, for receiving incident light, and exports after refraction;
Output face 22, exports for after the refracting light incident that exported by the plane of incidence 21.
After being reflected by the plane of incidence 21, because the plane of incidence 21 and the described output face 22 of described wedge 2 form less angle, also only can there is the deflection of smaller angle in the incident light of the incident light that the plane of incidence 21 exports after output face 22 reflects.In the present embodiment, the angle that the described plane of incidence 21 and output face 22 are formed is 6-8 °, make incident light incident light after the refraction of this wedge 2, the angle that the incident optical energy exported after first plane 31 and the refraction of the second plane 32 of isosceles right-angle prism 3 again and rhombus dmd chip 1 place plane are formed is almost 24 °, so when rhombus dmd chip 1 is in open state, it exports the reflected light with its place plane orthogonal, and when rhombus dmd chip 1 is in open state, the angle that its reflected light exported and the second plane are formed is almost 36 °.
Further, in order to improve the imaging effect of projector, wedge 2 and isosceles right-angle prism 3 all should adopt low-refraction, the glass material of high dispersion values, refractive index and dispersion range can 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 Refractive Index of Material and dispersion are respectively n=1.5164, v=64.1333, thus improve the imaging effect of projector further.
Further, in order to reduce by the optical energy loss of from air to wedge 2, the described plane of incidence 21 is mutually vertical with described incident light, so incident light and the plane of incidence 21 shape angle in 90 °, just can enter in wedge 2 along the direct transmission of the normal of the plane of incidence 21, light loss of energy is less and the deflection of angle can not occur, if, the described plane of incidence 21 and described incident light out of plumb, thus incident light likely reflects or through the plane of incidence 21, angular deflection occurs, the optical energy loss of from air to wedge 2 is increased and makes the deflection of incident light generation wide-angle, therefore the described plane of incidence 21 is mutually vertical with described incident light.The optical energy loss of from air to wedge 2 is made to reduce and can coordinate with described rhombus dmd chip 1.
In concrete enforcement, the present invention also provides the prism system of the second embodiment, as shown in Figure 4 and Figure 5, in order to make the incident angle of light in wedge 2 in incident light and isosceles right-angle prism 3 deflect, described output face 22 is coupled with described first plane 31 and be arranged in parallel.In concrete enforcement, output face 22 is coupled with the air gap layer that is coupled through of described first plane 31, is convenient to the installation and removal between output face 22 and described first plane 31.In the present embodiment, the angle that the described plane of incidence 21 and output face 22 are formed is 2-5 °, and this wedge 2 can be coordinated with described rhombus dmd chip 1.
Further, in order to improve the imaging effect of projector, wedge 2 and isosceles right-angle prism 3 all should adopt low-refraction, the glass material of high dispersion values, refractive index and dispersion range can 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 Refractive Index of Material and dispersion are respectively n=1.5164, v=64.1333, thus improve the imaging effect of projector further.
In concrete enforcement, the present invention also provides the prism system of the third embodiment, and as shown in Figure 6 and Figure 7, the described integration lens 54 for converging beam comprises arcwall face 541 and straight plane 542,
Arcwall face 541, for receiving incident light and converging described incident light;
Straight plane 542, is coupled with the plane of incidence 21 of described wedge 2, for receiving the incident light of arcwall face 541 output and exporting the described plane of incidence 21 to.Because the plane of incidence 21 is perpendicular, by described straight plane 542, be convenient to coordinate with described wedge 2, and integration lens 54 is coupled with described wedge 2, make integration lens 54 and described wedge 2 can form an entirety, thus improve the reliability of prism system, and simplify the structure of prism system.
Further, described straight plane 542 is fitted bonding with the plane of incidence 21 of described wedge 2, because integration lens 54 is coupled with described wedge 2, namely be coupled by air gap layer, but that is directly undertaken by air gap layer between plane 542 and the plane of incidence 21 of described wedge 2 is coupled, integration lens 54 is just easy to separate with described wedge 2, under preferable case, it is bonding that described straight plane 542 and the described plane of incidence 21 carry out laminating by optical cement, integration lens 54 and described wedge 2 is made to be fully formed an entirety, the reliability of further raising prism system, and simplify the structure of prism system.In order to make described rhombus dmd chip 1 can coordinate with this prism system, in concrete enforcement, described rhombus dmd chip 1 is positioned near the beams converge point of integration lens 54.
Further, in the present embodiment, the angle that the described plane of incidence 21 and output face 22 are formed is 6-8 °, and this wedge 2 can be coordinated with described rhombus dmd chip 1.
Further, in order to improve the imaging effect of projector, wedge 2 and isosceles right-angle prism 3 all should adopt low-refraction, the glass material of high dispersion values, refractive index and dispersion range can 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 Refractive Index of Material and dispersion are respectively n=1.5164, v=64.1333, thus improve the imaging effect of projector further.
Further, in order to make the technique realizing prism system simpler, described integration lens 54 can also be one-body molded with described wedge 2, so now the material of wedge 2 is the same with the material of integration lens 54, adopt low-refraction, the plastic material of high dispersion values, its refractive index and dispersion range can at n<1.55, under v>50 preferable case, adopt the plastic material of PMMA model, its refractive index and dispersion are respectively n=1.4918, v=57.3274, and the glass material of isosceles right-angle prism 3 or employing BK7 or K9 model.
Further, when described integration lens 54 is one-body molded with described wedge 2, in order to make this wedge 2 can coordinate with described rhombus dmd chip 1, the angle that the described plane of incidence 21 and output face 22 are formed is 9-14 °.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a projector, is characterized in that, comprises light source, light processing unit, prism system, rhombus dmd chip and projection objective;
Light source, for generation of and output beam;
Light processing unit, for processing the light beam exported from light source and exporting incident light;
Prism system, described prism system comprises wedge, and is coupled with rhombus dmd chip and has the isosceles right-angle prism of three perpendiculars; Described wedge, for receiving the incident light that light processing unit exports, and export after refraction, the plane of incidence and the output face of wherein said wedge are perpendicular; Described isosceles right-angle prism, exports rhombus dmd chip to after the incident light for exporting wedge reflects, and according to the control of rhombus dmd chip, and the reflected light exported rhombus dmd chip is totally reflected the light beam of rear output different angles;
Rhombus dmd chip, be coupled with prism system, for receiving the incident light that prism system exports, described rhombus dmd chip has out and closes two states, reflect this incident light by described two states and export the reflected light of different angles, to control the outbound course of this reflected light in prism system;
Projection objective, for receiving the reflected light that prism system exports, and exports this reflected light to screen.
2. projector as claimed in claim 1, it is characterized in that, light source is LED three-color light source, for generation of with output R, G, B tri-coloured light.
3. projector as claimed in claim 2, it is characterized in that, described smooth processing unit comprises collimator lens assembly, three look synthesis lens, fly's-eye lens assembly and integration lens;
Collimator lens assembly, for receiving the light beam exported from LED three-color light source, and exports R, G, B tri-look directional light;
Three looks synthesis lens, for collimator lens assembly is exported R, G, B tri-the synthesis of look directional light mix directional light exporting;
Fly's-eye lens assembly, for receiving the directional light that three look synthesis lens export, and exports the directional light with rectangular light spot;
Integration lens, the directional light for being exported by described fly's-eye lens assembly converges and exports prism system to.
4. projector as claimed in claim 3, it is characterized in that, integration lens comprises arcwall face and straight plane;
Arcwall face, for receiving incident light and converging described incident light;
Straight plane, is coupled with the described plane of incidence, exports the plane of incidence of described wedge for receiving arcwall face after the incident light exported also reflects to.
5. projector as claimed in claim 4, it is characterized in that, described straight plane is fitted bonding with the plane of incidence of described wedge.
6. projector as claimed in claim 4, is characterized in that, described integration lens and described wedge one-body molded.
7. projector as claimed in claim 6, is characterized in that, the angle that the described plane of incidence and output face are formed 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 |
|---|---|
| CN102565896A CN102565896A (en) | 2012-07-11 |
| CN102565896B true 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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| CN (1) | CN102565896B (en) |
| WO (1) | WO2012089113A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN105589285B (en) * | 2016-02-19 | 2018-04-17 | 苏州佳世达光电有限公司 | Projector |
| CN106842510B (en) * | 2017-03-30 | 2019-06-25 | 明基智能科技（上海）有限公司 | Optical projection system |
| CN109375464A (en) * | 2018-12-28 | 2019-02-22 | 邓荣 | It is totally reflected projector |
| 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 |
| 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 |
Citations (2)
| 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 |
| 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 (4)
| 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 |
| WO2006068363A1 (en) * | 2004-12-21 | 2006-06-29 | Lg Electronics Inc. | Thin type projector |
| KR20080109409A (en) * | 2007-06-13 | 2008-12-17 | 삼성전자주식회사 | Projection display apparatus and display method thereof |
-
2010
- 2010-12-30 CN CN201010614305.3A patent/CN102565896B/en active Active
-
2011
- 2011-12-27 WO PCT/CN2011/084769 patent/WO2012089113A1/en active Application Filing
Patent Citations (2)
| 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 |
| 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 |
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| WO2012089113A1 (en) | 2012-07-05 |
| CN102565896A (en) | 2012-07-11 |
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