CN101311816A - Projection device - Google Patents
Projection device Download PDFInfo
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- CN101311816A CN101311816A CNA200710105039XA CN200710105039A CN101311816A CN 101311816 A CN101311816 A CN 101311816A CN A200710105039X A CNA200710105039X A CN A200710105039XA CN 200710105039 A CN200710105039 A CN 200710105039A CN 101311816 A CN101311816 A CN 101311816A
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- projection arrangement
- illuminating bundle
- reflecting element
- prism
- lens
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Abstract
A projecting apparatus comprises a combination of prisms, a light source, a reflection element, a light valve and a projection lens. The combination of prisms comprises a first prism provided with a first surface, a second surface and a third surface and a second prism provided with a fourth surface, a fifth surface and a sixth surface. The second surface is opposite to the fourth surface. The reflection element, the light valve and the projection lens are respectively arranged near the third, the fifth and the six surfaces. The light source gives out an illuminating beam to the first surface. The illuminating beam is reflected by the second surface and the reflection element successively and goes through the third, the second, the fourth and the fifth surfaces sequentially. The illuminating beam is turned into an image beam by the light valve. The image beam is reflected by the fourth surface, goes through the sixth surface and is transmitted to the projection lens. The projecting apparatus has small size.
Description
Technical field
The present invention relates to a kind of display device, relate in particular to a kind of projection arrangement.
Background technology
Fig. 1 is a kind of synoptic diagram of existing projection arrangement.With reference to Fig. 1, existing projection arrangement 100 comprises a lamp source 110, a plurality of lens 120a, 120b, a catoptron 130, a prism group 140, a digital micro-mirror device (digital micro-mirror device, DMD) 150 and one projection lens 160.
Prism group 140 is made up of prism 142 and prism 146, and wherein prism 142 has surperficial 144a, 144b, 144c, and prism 146 has surperficial 148a, 148b.144b is relative with surperficial 148b on the surface, and has a gap between surperficial 144b and the surperficial 148b.Prism 146 is in order to the optical path difference of compensation light in prism 142.
Digital micro-mirror device 150 configurations are adjacent to surperficial 144a, and projection lens 160 configurations are adjacent to surperficial 144c.Catoptron 130 is disposed between lamp source 110 and the prism group 140.Lens 120a is configured between lamp source 110 and the catoptron 130, and lens 120b is disposed between catoptron 130 and the prism group 140.
In the prior art, lens 120a and lens 120b be in order to converging the illuminating bundle B1 that lamp source 110 is provided, so that it is when being passed to digital micro-mirror device 150, sectional area conforms to the area of the active surface of digital micro-mirror device 150.Therefore, projection arrangement 100 inside need have enough spaces just can make illuminating bundle B1 that enough bang paths long (path length) are arranged, and so the sectional area of illuminating bundle B1 could conform to the area of active surface.In other words, in the framework of existing projection arrangement 100, have enough bang paths long in order to make illuminating bundle B1, the distance between each element can't be reduced.Therefore, the framework of existing projection arrangement 100 obviously can't meet the trend of the small size of projection arrangement pursuit now.
Summary of the invention
The purpose of this invention is to provide a kind of projection arrangement, it has the little advantage of volume.
Other purpose of the present invention and advantage can be further understood from the disclosed technical characterictic of the present invention.
For reaching one of above-mentioned or partly or all purposes or other purpose, the present invention proposes a kind of projection arrangement, and it comprises a prism group, a lamp source, a reflecting element, a light valve (light valve) and a projection lens.This prism group comprises one first prism and one second prism.First prism has a first surface, a second surface and one the 3rd surface, and second prism then has one the 4th surface, one the 5th surface and one the 6th surface.Wherein, second surface is relative with the 4th surface.The lamp source is suitable for providing an illuminating bundle, and this illuminating bundle is from first surface incident first prism, and is reflected by second surface and from the 3rd surperficial outgoing.The reflecting element configuration is adjacent to the 3rd surface, and is positioned on the bang path of illuminating bundle.Wherein, reflecting element is suitable for the indirect illumination light beam, makes the illuminating bundle after the reflecting element reflection pass through the 3rd surface, second surface, the 4th surface and the 5th surface in regular turn.The light valve configuration is adjacent to the 5th surface, and is positioned on the bang path of the illuminating bundle after the reflecting element reflection.Wherein, light valve is suitable for converting illuminating bundle to an image beam, and with this image beam reflected back the 4th surface.The 4th surface is suitable for the reflected image light beam, makes image beam pass through the 6th surface.The projection lens configuration is adjacent to the 6th surface, and is positioned on the bang path of image beam.
In the present invention, because illuminating bundle can come and go, transmit requisite space between the 3rd surface and reflecting element, and then dwindle the volume of projection arrangement of the present invention so can reduce illuminating bundle.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are done following detailed description.
Description of drawings
Fig. 1 is a kind of synoptic diagram of existing projection arrangement;
Fig. 2 is the synoptic diagram of the projection arrangement of first embodiment of the invention;
Fig. 3 is the synoptic diagram of the projection arrangement of second embodiment of the invention;
Fig. 4 is the synoptic diagram of the projection arrangement of third embodiment of the invention;
Fig. 5 is the synoptic diagram of the projection arrangement of fourth embodiment of the invention;
Fig. 6 is the synoptic diagram of the projection arrangement of fifth embodiment of the invention;
Fig. 7 is the synoptic diagram of the projection arrangement of sixth embodiment of the invention;
Fig. 8 is the synoptic diagram of the projection arrangement of seventh embodiment of the invention.
[main element symbol description]
100,200a, 200b, 200c, 200d, 400a, 400b, 400c: projection arrangement
110,210: the lamp source
120a, 120b, 250a, 250b: lens
130: catoptron
140,300a, 300b, 300c, 300d: prism group
142,146: prism
144a, 144b, 144c, 148a, 148b, 252b: surface
150: digital micro-mirror device
160,240: projection lens
220a, 220b, 220c, 220d: reflecting element
230: light valve
310a, 310b, 310c, 310d: first prism
312a, 312b: first surface
314: second surface
316a, 316b: the 3rd surface
320: the second prisms
322: the four surfaces
324: the five surfaces
326: the six surfaces
B1, L1: illuminating bundle
B2, L2: image beam
G: gap
Embodiment
The explanation of following each embodiment is with reference to the accompanying drawings, can be in order to the specific embodiment of implementing in order to illustration the present invention.The direction term that the present invention mentioned, for example " on ", D score, " preceding ", " back ", " left side ", " right side " etc., only be direction with reference to the accompanying drawings.Therefore, the direction term of use is to be used for explanation, but not is used for limiting the present invention.
First embodiment
Fig. 2 is the synoptic diagram of the projection arrangement of first embodiment of the invention.Consult Fig. 2, projection arrangement 200a comprises a lamp source 210, a reflecting element 220a, a light valve 230, a projection lens 240 and a prism group 300a.Wherein, prism group 300a comprises one first prism 310a and one second prism 320.The first prism 310a has a first surface 312a, a second surface 314 and one the 3rd surperficial 316a, and 320 on second prism has one the 4th surface 322,324 and 1 the 6th surface 326, one the 5th surface.Second surface 314 is relative with the 4th surface 322.In the present embodiment, there is a clearance G between the two.In addition, reflecting element 220a is that configuration is adjacent to the 3rd surperficial 316a, and light valve 230 is that configuration is adjacent to the 5th surface 324, and projection lens 240 is to dispose to be adjacent to the 6th surface 326.
Above-mentioned light valve 230 is an optical valve in reflection type, as digital micro-mirror device or monocrystalline silicon display panels (liquid crystal on silicon panel, LCOS panel) etc.In addition, reflecting element 220a for example is a plane mirror.
Among the above-mentioned projection arrangement 200a, illuminating bundle L1 can be reflexed to reflecting element 220a by second surface 314, and element 220a reflected back second surface 3 14 more then is reflected.In other words, present embodiment comes and goes illuminating bundle L1 between second surface 314 and reflecting element 220a, with the transmission requisite space of effective reduction illuminating bundle L1, and then the volume of reduced projection device 200a.
In the present embodiment, at least one collective optics (as lens 250a) can be set, to converge illuminating bundle L1 between the first surface 312a of the lamp source 210 and the first prism 310a.In addition, at least one collective optics (as lens 250b) also can be set, to converge illuminating bundle L1 between the 3rd surperficial 316a of the reflecting element 220a and the first prism 310a.Because illuminating bundle L1 can be between the second surface 314 of the first prism 310a and reflecting element 220a back and forth, so illuminating bundle L1 understands scioptics 250b twice.In other words, lens 250b can converge illuminating bundle L1 twice, so can reduce the quantity of lens.Therefore, compared to existing projection arrangement 100 (as shown in Figure 1), the negligible amounts of the optical element of projection arrangement 200a of the present invention so not only can reduce production costs, also can reduce and save the required occupation space of optical element, and then the volume of reduction projection arrangement 200a.
Second embodiment
Fig. 3 is the synoptic diagram of the projection arrangement of second embodiment of the invention.Consult Fig. 3, the projection arrangement 200b of present embodiment is similar to the projection arrangement 200a (as shown in Figure 2) of first embodiment, and its main difference part is the prism group.And following only not existing together at it describes.
The first prism 310b of the prism group 300b of present embodiment, its first surface 312a is the plane, and the 3rd surperficial 316b is a curved surface.The 3rd surperficial 316b is suitable for converging the illuminating bundle L1 that element 220a reflected that is reflected.Because the 3rd surperficial 316b has the function of converging beam, so can reduce the quantity of collective optics, so not only can save the cost of collective optics, also can save the required occupation space of collective optics.Therefore, projection arrangement 200b has the advantage that volume is little and cost is low.
Certainly, in the present embodiment, also can between the 3rd surperficial 316b and reflecting element 220a, dispose collective optics.Therefore, projection arrangement 200b shown in Figure 3 just illustrates, and is not in order to limit the present invention.
The 3rd embodiment
Fig. 4 is the synoptic diagram of the projection arrangement of third embodiment of the invention.Consult Fig. 4, the projection arrangement 200c of present embodiment is similar to the projection arrangement 200a (as shown in Figure 2) of first embodiment, and its main difference part is the prism group.And following only not existing together at it describes.
The first prism 310c of the prism group 300c of present embodiment, its 3rd surperficial 316a is the plane, and first surface 312b is for converging the curved surface of illuminating bundle L1.Because first surface 312b can converge illuminating bundle L1, thus the quantity of collective optics can be reduced, and then reduce production costs.
In the present embodiment, configurable collective optics between first surface 312b and lamp source 210.Therefore, projection arrangement 200c shown in Figure 4 just illustrates, and is not in order to limit the present invention.
The 4th embodiment
Fig. 5 is the synoptic diagram of the projection arrangement of fourth embodiment of the invention.Consult Fig. 5, the projection arrangement 200d of present embodiment is similar to the projection arrangement 200a (as shown in Figure 2) of first embodiment, and its main difference part is the prism group.And following only not existing together at it describes.
The first prism 310d of the prism group 300d of present embodiment, its first surface 312b and the 3rd surperficial 316b are all curved surface.This first surface 312b and the 3rd surperficial 316b all can converge illuminating bundle L1, therefore can save the quantity of collective optics, and then reduce production costs.
In the present embodiment, can set up at least one collective optics between first surface 312b and the lamp source 210 and/or between the 3rd surperficial 316b and the reflecting element 220a.In detail, configurable at least one lens between first surface 312b and the lamp source 210, converging illuminating bundle L1, and also configurable at least one lens between the 3rd surperficial 316b and the reflecting element 220a, to converge illuminating bundle L1.Therefore, projection arrangement 200d shown in Figure 5 just illustrates, and is not in order to limit the present invention.
The 5th embodiment
Fig. 6 is the synoptic diagram of the projection arrangement of fifth embodiment of the invention.Consult Fig. 6, the projection arrangement 400a of present embodiment is similar to the projection arrangement 200a (as shown in Figure 2) of first embodiment, and its main difference part is the prism group.And following only not existing together at it describes.
The reflecting element 220b of present embodiment is a curved reflector, and it can and converge illuminating bundle L1 reflection.In other words, the reflecting element 220b of present embodiment has the function of optically focused, thus can save the quantity of collective optics, to reduce production costs.In addition, also can set up other collective optics between reflecting element 220b and the prism group 300a.Therefore, projection arrangement 400a shown in Figure 6 just illustrates, and is not in order to limit the present invention.
The 6th embodiment
Fig. 7 is the synoptic diagram of the projection arrangement of sixth embodiment of the invention.Consult Fig. 7, the projection arrangement 400b of present embodiment is similar to the projection arrangement 200a (as shown in Figure 2) of first embodiment, it is a coating that is coated on the surperficial 252b of one of lens 250b that its difference is in the reflecting element 220c of present embodiment, and the material of this coating for example is metal or other reflectorized material.
The 7th embodiment
Fig. 8 is the synoptic diagram of the projection arrangement of seventh embodiment of the invention.Consult Fig. 8, the projection arrangement 400c of present embodiment is similar to the projection arrangement 200b (as shown in Figure 3) of second embodiment, it is a coating of coating on the 3rd surperficial 316b that its difference is in the reflecting element 220d of present embodiment, and the material of this coating for example is metal or other reflectorized material.
In addition, similar relevant for the advantage of projection arrangement 400b, 400c to the advantage of the projection arrangement 200a of first embodiment, so will no longer repeat at this.
In sum, in the present invention, because illuminating bundle can come and go, transmit requisite space between the 3rd surface and reflecting element, and then dwindle the volume of projection arrangement of the present invention so can reduce illuminating bundle.In addition, the lens that are arranged between the reflecting element and first prism can converge twice with light beam, thus can reduce the quantity of collective optics, and then reduce production costs.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any those skilled in the art without departing from the spirit and scope of the invention, when can doing a little change and modification, so protection scope of the present invention should be defined by accompanying Claim.Arbitrary embodiment of the present invention in addition or claim must not reached the disclosed whole purposes of the present invention or advantage or characteristics.In addition, summary part and title only are the usefulness that is used for assisting the patent document search, are not to be used for limiting interest field of the present invention.
Claims (13)
1, a kind of projection arrangement comprises:
One prism group comprises:
One first prism has a first surface, a second surface and one the 3rd surface;
One second prism has one the 4th surface, one the 5th surface and one the 6th surface, and wherein this second surface is relative with the 4th surface;
One lamp source is suitable for providing an illuminating bundle, and wherein this illuminating bundle is from this first prism of this first surface incident, and is reflected and the 3rd surperficial outgoing certainly by this second surface;
One reflecting element, configuration is adjacent to the 3rd surface, and be positioned on the bang path of this illuminating bundle, wherein this reflecting element is suitable for reflecting this illuminating bundle, makes this illuminating bundle after this reflecting element reflection pass through the 3rd surface, this second surface, the 4th surface and the 5th surface in regular turn;
One light valve, configuration is adjacent to the 5th surface, and be positioned on the bang path of this illuminating bundle after this reflecting element reflection, wherein this light valve is suitable for converting this illuminating bundle to an image beam also with this image beam reflected back the 4th surface, and the 4th surface is suitable for reflecting this image beam, makes this image beam by the 6th surface; And
One projection lens, configuration is adjacent to the 6th surface, and is positioned on the bang path of this image beam.
2, projection arrangement as claimed in claim 1 also comprises lens, is disposed between this first surface and this lamp source, to converge this illuminating bundle.
3, projection arrangement as claimed in claim 1, wherein this first surface is the plane.
4, projection arrangement as claimed in claim 1, wherein this first surface is a curved surface, and this first surface is suitable for converging this illuminating bundle.
5, projection arrangement as claimed in claim 1, also comprise lens, be disposed between the 3rd surface and this reflecting element, and be positioned at from the bang path of this illuminating bundle of the 3rd surperficial outgoing and be positioned on the bang path of this illuminating bundle after this reflecting element reflection, to converge this illuminating bundle.
6, projection arrangement as claimed in claim 5, wherein this reflecting element is to be formed at the lip-deep coating of one of these lens.
7, projection arrangement as claimed in claim 1, wherein this reflecting element is a plane mirror.
8, projection arrangement as claimed in claim 1, wherein this reflecting element is a curved reflector.
9, projection arrangement as claimed in claim 1, wherein the 3rd surface is the plane.
10, projection arrangement as claimed in claim 1, wherein the 3rd surface is a curved surface, and the 3rd surface is suitable for converging this illuminating bundle that is reflected by this reflecting element.
11, projection arrangement as claimed in claim 10, wherein this reflecting element is to be arranged at the 3rd a lip-deep coating.
12, projection arrangement as claimed in claim 2, also comprise another lens, be disposed between the 3rd surface and this reflecting element, and be positioned at from the bang path of this illuminating bundle of the 3rd surperficial outgoing and be positioned on the bang path of this illuminating bundle after this reflecting element reflection, to converge this illuminating bundle.
13, wherein there is a gap in projection arrangement as claimed in claim 1 between this second surface and the 4th surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710105039XA CN101311816B (en) | 2007-05-22 | 2007-05-22 | Projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710105039XA CN101311816B (en) | 2007-05-22 | 2007-05-22 | Projection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101311816A true CN101311816A (en) | 2008-11-26 |
| CN101311816B CN101311816B (en) | 2011-05-25 |
Family
ID=40100504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710105039XA Active CN101311816B (en) | 2007-05-22 | 2007-05-22 | Projection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101311816B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182456A (en) * | 2015-09-11 | 2015-12-23 | 成都迅达光电有限公司 | Prism and projector |
| CN106873295A (en) * | 2017-03-24 | 2017-06-20 | 广景视睿科技（深圳）有限公司 | A kind of projector |
| CN109521634A (en) * | 2017-09-20 | 2019-03-26 | 中强光电股份有限公司 | Projection arrangement and optical projection system |
| WO2019104915A1 (en) * | 2017-12-01 | 2019-06-06 | 广景视睿科技（深圳）有限公司 | Projection system and tir prism group |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003046655A1 (en) * | 2001-11-28 | 2003-06-05 | 3M Innovative Properties Company | Tir prism for dmd projector |
-
2007
- 2007-05-22 CN CN200710105039XA patent/CN101311816B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182456A (en) * | 2015-09-11 | 2015-12-23 | 成都迅达光电有限公司 | Prism and projector |
| CN106873295A (en) * | 2017-03-24 | 2017-06-20 | 广景视睿科技（深圳）有限公司 | A kind of projector |
| CN109521634A (en) * | 2017-09-20 | 2019-03-26 | 中强光电股份有限公司 | Projection arrangement and optical projection system |
| CN109521634B (en) * | 2017-09-20 | 2020-12-08 | 中强光电股份有限公司 | Projection device and projection system |
| WO2019104915A1 (en) * | 2017-12-01 | 2019-06-06 | 广景视睿科技（深圳）有限公司 | Projection system and tir prism group |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101311816B (en) | 2011-05-25 |
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