CN103105719A - Projector - Google Patents
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- CN103105719A CN103105719A CN2011103544189A CN201110354418A CN103105719A CN 103105719 A CN103105719 A CN 103105719A CN 2011103544189 A CN2011103544189 A CN 2011103544189A CN 201110354418 A CN201110354418 A CN 201110354418A CN 103105719 A CN103105719 A CN 103105719A
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- light
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- mirror system
- rhombus
- dmd chip
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Abstract
The invention provides a projector which comprises a light source, a light processing unit, a reflecting mirror system, a diamond digital mirror device (DMD) chip and a projecting lens. The light source is used for producing and outputting a bean; the light processing unit is used for processing the beam output from the light source and outputting the beam; the reflecting mirror system is used for receiving the beam output by the light processing unit, reflecting the beam and outputting the beam; the diamond DMD chip is coupled with the reflecting mirror, used for receiving the beam output by the reflecting mirror system, reflecting the beam and controlling an output direction of reflecting light on the reflecting mirror system; and the projecting lens is used for receiving the reflecting light output from the DMD chip by the reflecting mirror system and outputting the reflecting light to a screen. According to the projector, two kinds of reflecting light of different angles are output based an open state and a closed state of the diamond chip so that whether the reflecting light output by the diamond DMD chip is output through the reflecting mirror system or not is determined, and the diamond DMD chip can be matched with the reflecting mirror system.
Description
Technical field
The invention belongs to the demonstration field, relate in particular to a kind of projector.
Background technology
LED(Light Emitting Diode, light emitting diode) advantages such as efficient is high owing to having for minitype projection machine, good contrast, life-span length, have very consequence in little projector market.At present the LED minitype projection machine mainly adopts traditional dmd chip to realize projection in conjunction with prism system, adopt the right angle pel array to produce 1280 * 720 image in traditional dmd chip, the angle that the turning axle of each micro-reflector unit becomes with the long limit of chip is 45 degree, and namely each micro-reflector unit is dedicated to a graphical pixel on display device.Further, in order to realize higher resolution and synchronously to reduce system cost, novel dmd chip adopts the diamond pixels array way, be that each micro-reflector unit has been rotated 45 degree in right angle pel array DMD, making angle that the turning axle of each micro-reflector unit becomes with the long limit of chip is 90 to spend.But, the angle of incidence of light degree that novel rhombus dmd chip requires will be fully different with traditional dmd chip, therefore can make the optical system that includes prism system in conventional projector to mate with novel rhombus dmd chip, thereby can't realize projection.
Summary of the invention
The objective of the invention is to solve the optical system that includes prism system in prior art can't mate with novel rhombus dmd chip, thereby can't realize the technical matters of projection, and a kind of novel projector is provided.
The objective of the invention is to be achieved through the following technical solutions:
A kind of projector comprises light source, light processing unit, mirror system, rhombus dmd chip and projecting lens;
Light source, for generation of and output beam;
The light processing unit is used for processing rear output from the light beam of light source output;
Mirror system is used for receiving the light beam of light processing unit output and reflecting rear output;
The rhombus dmd chip with the mirror system coupling, is used for receiving the light beam of mirror system output, and this light beam is reflected, and control the outbound course of this reflected light on mirror system;
Projecting lens is used for receiving mirror system from the reflected light of rhombus dmd chip output, and exports this reflected light to screen.
Projector provided by the invention, the light beam of the light processing unit being inputted by mirror system exports the rhombus dmd chip to, receive the light beam of output when the rhombus dmd chip after, can reflect its light beam that receives, simultaneously open and close two states according to what the rhombus dmd chip had, two kinds of reflected light that output angle is different, thus determine whether export through mirror system through the reflected light of rhombus dmd chip output.Therefore, when the rhombus dmd chip is in two kinds of different states, the reflection luminous energy of mirror system output forms two kinds of contrasts, when the projector that namely has this mirror system receives the reflected light of a kind of angle wherein, must not receive the reflected light of another kind of angle, can realize the projection of two kinds of contrasts thus, make rhombus dmd chip and this mirror system coupling.
Description of drawings
Fig. 1 is projector architecture schematic diagram provided by the invention.
Fig. 2 is the embodiment schematic diagram that in projector provided by the invention, the rhombus dmd chip is in out state.
Fig. 3 is the enlarged diagram at A place in Fig. 2.
Fig. 4 is the embodiment schematic diagram that in projector provided by the invention, the rhombus dmd chip is in off status.
Embodiment
In order to make technical matters solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Please refer to shown in Figure 1ly, a kind of projector comprises light source 1, light processing unit, mirror system, rhombus dmd chip 6 and projecting lens 7;
The light processing unit is used for processing rear output from the light beam of light source 1 output;
Mirror system is used for receiving the light beam of light processing unit output and reflecting rear output;
Projector provided by the invention, the light beam of the light processing unit being inputted by mirror system exports the rhombus dmd chip to, receive the light beam of output when the rhombus dmd chip after, can reflect its light beam that receives, simultaneously open and close two states according to what the rhombus dmd chip had, two kinds of reflected light that output angle is different, thus determine whether export through mirror system through the reflected light of rhombus dmd chip output; If through the mirror system reflection, enter projecting lens output, if without the mirror system reflection, light can not be exported from projecting lens.Therefore, when light beam enters into the mirror system back reflection to the rhombus dmd chip, only can export two kinds of reflected light that angle is different according to the two states of rhombus dmd chip, namely when the rhombus dmd chip was in two kinds of different states, the reflection luminous energy of mirror system output formed two kinds of contrasts and makes rhombus dmd chip and this mirror system mate.When the projector that has so this mirror system receives the reflected light of a kind of angle wherein, the reflected light of another kind of angle must be do not received, the projection of two kinds of contrasts can be realized thus.
Simultaneously, in projector provided by the invention, described mirror system is compared with original prism system, also has the following advantages:
The first, catoptron is lightweight, and prism weight is large, thereby can further reduce the overall weight of micro projector.
The second, light beam is high through the utilization ratio of mirror system back reflection light, because its order of reflection is twice; And light beam carries out Multi reflection through each faceted pebble of prism system, and its order of reflection generally all is no less than 5 times, and is larger in the loss of each faceted pebble, therefore uses mirror system can significantly improve whole optical efficiency.
Three, catoptron handling ease, processing technology is ripe, and cost is lower; And prism is complicated aspect processing technology, and cost is higher.
Four, the projector architecture that uses this mirror system to form is simple, compact, is applicable to the requirement of micro projector.
As concrete embodiment, described light source 1 is specially the LED three-color light source, utilizes the mode of sequential to produce and export R, G, B three coloured light, namely exports red, green, blue three coloured light.
As concrete embodiment, described smooth processing unit comprises collimation lens assembly 2, fly's-eye lens assembly 3 and integration lens 4;
Fly's-eye lens assembly 3 be used for receiving the directional light from 2 outputs of collimation lens assembly, and output has the directional light of the hot spot that mates with the rhombus dmd chip;
In specific embodiment, light source 1 the place ahead arranges one group of collimation lens assembly 2, the diverging light that light source 1 produces can be become directional light, improves the utilization factor of LED light source, then directional light is exported; Described fly's-eye lens assembly 3 can the collimation lens subassembly hot spot of directional light of 2 outputs carry out shaping, if it is larger than rhombus dmd chip to output to the hot spot of rhombus dmd chip, the luminous energy that so only exports on the rhombus dmd chip just is reflected utilization, and remaining luminous energy all can lose; Thereby, under preferable case, with the spot shaping one-tenth of directional light and the state of the form fit of rhombus dmd chip; If the hot spot that exports on the rhombus dmd chip is inhomogeneous, the light that finally projects is also inhomogeneous, can affect drop shadow effect, be specially image can occur bright on one side, on one side dark effect; So, in order to improve the efficiency of light energy utilization and projected picture homogeneity, the hot spot of directional light can be become uniform hot spot and this hot spot can mate with the rhombus dmd chip by fly's-eye lens assembly 3.Then, then after the light beam that fly's-eye lens assembly 3 is exported is converged by integration lens 4 export mirror system to.
As concrete embodiment, described mirror system is the catoptron 5 with single plane 51, and the plane 51 of catoptron 5 is provided with the reflectance coating that reflectivity is 95-100%, can form high reflectance on the surface of catoptron 5 thus; Described plane 51 is used for the light beam of integration lens 4 outputs is reflected rear output, and the reflected light of exporting when being used for the rhombus dmd chip is in out state simultaneously reflects, and exports projecting lens 7 to.
Particularly, please refer to shown in Fig. 2-3, when the rhombus dmd chip is in out state, the angle that the plane 62 at digital micro-mirror unit 61 and rhombus dmd chip place forms is+12 degree, export the rhombus dmd chip to after the light beam of 51 pairs, plane integration lens, 4 outputs reflects after, the reflected light of rhombus dmd chip output is almost with the direction perpendicular to rhombus dmd chip surface, again through behind plane 51, export projecting lens 7 to the direction that is parallel to projecting lens 7 optical axises, thereby realize projection.
please refer to shown in Figure 4, when the rhombus dmd chip is in off status, the angle that the plane 62 at digital micro-mirror unit 61 and rhombus dmd chip place forms is-12 degree, export the rhombus dmd chip to after the light beam of 51 pairs, plane integration lens, 4 outputs reflects after, the output of rhombus dmd chip departs from axial location than the reflected light of wide-angle, thereby depart from catoptron 5, namely without catoptron 5, thereby the reflected light of this angle must export projecting lens 7 to, therefore can realize the projection of two kinds of contrasts, be that described mirror system can be mated with the rhombus dmd chip.
As concrete embodiment, the material of described reflectance coating is any one in monox and titanium oxide composition, silver or aluminium, and the concrete mode of formation can adopt the methods such as evaporation or sputter.
As concrete embodiment, the matrix material of described catoptron 5 adopts the glass material of optical property, mechanical property, good processability; As specific embodiment, it is the glass material of BK7 or H-K9L that described catoptron 5 adopts model.Further, the abrasion degree of described glass is 60-140, can further improve thus the processability of catoptron, reduces production costs.
as concrete embodiment, light beam through output after plane 51 reflections of catoptron 5, in order to form with the plane at rhombus dmd chip place the angle of 24-26 degree, and for the reflected light that makes two kinds of directions that the rhombus dmd chip exports when opening state with off status better separates, further, the plane 51 of described catoptron 5 is the 30-50 degree with the angle that the beam direction of light processing unit output becomes, and in the light processing unit, the parts of last output beam are integration lenses 4, therefore be namely that the angle that the plane 51 of catoptron 5 becomes with the optical axis direction of integration lens 4 is the 30-50 degree, simultaneously, the plane 51 of described catoptron 5 is the 20-40 degree with the angle that the plane at rhombus dmd chip 6 places becomes, and the optical axis direction of projecting lens 7 is parallel to the beam direction that catoptron 5 reflects for the second time.Preferably, the angle that becomes with the optical axis of projecting lens of the plane of described catoptron is the 50-70 degree.
The above is only preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a projector, is characterized in that, comprises light source, light processing unit, mirror system, rhombus dmd chip and projecting lens;
Light source, for generation of and output beam;
The light processing unit is used for processing rear output from the light beam of light source output;
Mirror system is used for receiving the light beam of light processing unit output and reflecting rear output;
The rhombus dmd chip with the mirror system coupling, is used for receiving the light beam of mirror system output, and this light beam is reflected, and control the outbound course of this reflected light on mirror system;
Projecting lens is used for receiving mirror system from the reflected light of rhombus dmd chip output, and exports this reflected light to screen.
2. projector according to claim 1, is characterized in that, described light source is for producing and export the LED three-color light source of R, G, B three coloured light.
3. projector according to claim 1, is characterized in that, described smooth processing unit comprises collimation lens assembly, fly's-eye lens assembly and integration lens;
The collimation lens assembly is used for receiving the light beam from light source output, and the output directional light;
The fly's-eye lens assembly be used for receiving the directional light from the output of collimation lens assembly, and output has the directional light of the hot spot that mates with the rhombus dmd chip;
Integration lens; Be used for the directional light of described fly's-eye lens assembly output is converged, and export mirror system to.
4. projector according to claim 1, is characterized in that, described mirror system is the catoptron with single plane, and the plane of catoptron is provided with the reflectance coating that reflectivity is 95-100%.
5. projector according to claim 4, is characterized in that, the material of described reflectance coating is monox and titanium oxide composition, silver or aluminium.
6. projector according to claim 4, is characterized in that, the matrix material of described catoptron is glass.
7. projector according to claim 6, is characterized in that, the abrasion degree of described glass is 60-140.
8. projector according to claim 4, is characterized in that, the plane of described catoptron is the 30-50 degree with the angle that the beam direction of light processing unit output becomes.
9. projector according to claim 4, is characterized in that, the plane of described catoptron is the 20-40 degree with the angle that the plane at rhombus dmd chip place becomes.
10. projector according to claim 4, is characterized in that, the angle that the plane of described catoptron becomes with the optical axis of projecting lens is the 50-70 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103544189A CN103105719A (en) | 2011-11-10 | 2011-11-10 | Projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103544189A CN103105719A (en) | 2011-11-10 | 2011-11-10 | Projector |
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| Publication Number | Publication Date |
|---|---|
| CN103105719A true CN103105719A (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103544189A Pending CN103105719A (en) | 2011-11-10 | 2011-11-10 | Projector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107577106A (en) * | 2017-09-29 | 2018-01-12 | 深圳晗竣雅科技有限公司 | A kind of imaging device based on 3D printing optical projection system |
Citations (4)
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|---|---|---|---|---|
| CN1536390A (en) * | 2003-03-28 | 2004-10-13 | ���ǵ�����ʽ���� | Projection system and method for forming color image |
| CN1790093A (en) * | 2004-12-17 | 2006-06-21 | 扬明光学股份有限公司 | Projection display system |
| US20070070304A1 (en) * | 2003-04-21 | 2007-03-29 | Seiko Epson Corporation | Display device, lighting device and projector |
| CN101830193A (en) * | 2010-04-19 | 2010-09-15 | 范桦 | Intelligent car light device capable imaging on road surface |
-
2011
- 2011-11-10 CN CN2011103544189A patent/CN103105719A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1536390A (en) * | 2003-03-28 | 2004-10-13 | ���ǵ�����ʽ���� | Projection system and method for forming color image |
| US20070070304A1 (en) * | 2003-04-21 | 2007-03-29 | Seiko Epson Corporation | Display device, lighting device and projector |
| CN1790093A (en) * | 2004-12-17 | 2006-06-21 | 扬明光学股份有限公司 | Projection display system |
| CN101830193A (en) * | 2010-04-19 | 2010-09-15 | 范桦 | Intelligent car light device capable imaging on road surface |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107577106A (en) * | 2017-09-29 | 2018-01-12 | 深圳晗竣雅科技有限公司 | A kind of imaging device based on 3D printing optical projection system |
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Application publication date: 20130515 |