CN103309134B - Projection arrangement - Google Patents
Projection arrangement Download PDFInfo
- Publication number
- CN103309134B CN103309134B CN201210067651.3A CN201210067651A CN103309134B CN 103309134 B CN103309134 B CN 103309134B CN 201210067651 A CN201210067651 A CN 201210067651A CN 103309134 B CN103309134 B CN 103309134B
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- China
- Prior art keywords
- liquid crystal
- display screen
- crystal display
- projection arrangement
- light
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind of projection arrangement, it includes a light source, light guide plate, one for showing the liquid crystal display screen of image and a projecting lens.This light guide plate is arranged at the incident side of this liquid crystal display screen, incides in this liquid crystal display screen after being used for the light uniformization making this light source provide.This projecting lens is arranged at the light emission side of this liquid crystal display screen, for image projection to the screen shown by this liquid crystal display screen.When the pixel required is too high, uses this liquid crystal display screen that the liquid crystal fewer than micromirror quantity can be used to produce identical GTG, there is higher resolution, it is to avoid increase the quantity of micromirror, make the simple in construction of this projection arrangement.
Description
Technical field
The present invention relates to a kind of shadow casting technique, particularly relate to a kind of projection arrangement.
Background technology
In the projection arrangement of numerous kinds, the optical module that digital light process (Digital Light ProcEssing, DLP) projector is used is digital micro-mirror assembly DMD (Digital
Micro-mirror Device, DMD), the principle of digital optical processing projector imaging reflects light (having 500,000 small eyeglasses on dmd chip) mainly by the reflecting mirror on dmd chip, and image projection is formed the technology of image.Up to a million movable lens the most small are had on dmd chip, referred to as micromirror, the light of incidence is reflexed to projection lens to project picture for utilizing electric current to control its lens angle by its operation principles, and its color has then been synthesized the image output of colour by optical filter.
But, when the pixel required is too high, therefore the quantity of micromirror also to drive the design of micromirror by more complicated along with becoming many, and the structure making whole projection arrangement is complicated.
Summary of the invention
In view of this, it is necessary to provide a kind of and ensure the projection arrangement of simple in construction while pixel request.
A kind of projection arrangement, it includes a light source, light guide plate, one for showing the liquid crystal display screen of image and a projecting lens.This light guide plate is arranged at the incident side of this liquid crystal display screen, incides in this liquid crystal display screen after being used for the light uniformization making this light source provide.This projecting lens is arranged at the light emission side of this liquid crystal display screen, for image projection to the screen shown by this liquid crystal display screen.
Above-mentioned projection arrangement, compared with using micromirror, when the pixel required is too high, use this liquid crystal display screen that the liquid crystal fewer than micromirror quantity can be used to produce identical GTG, there is higher resolution, it is to avoid increase the quantity of micromirror, make the simple in construction of this projection arrangement.
Accompanying drawing explanation
The structural representation of the projection arrangement that Fig. 1 provides for first embodiment of the invention；
The structural representation of the projection arrangement that Fig. 2 provides for second embodiment of the invention.
Main element symbol description
| Projection arrangement | 100、200 |
| Light source | 110、210 |
| Light guide plate | 120 |
| First surface | 121、221 |
| Groove | 221a |
| Second surface | 122 |
| Transmission film | 122a |
| Side | 123 |
| Reflecting layer | 123a、221b |
| Liquid crystal display screen | 130 |
| Liquid crystal layer | 131 |
| Projecting lens | 140 |
| Circuit board | 150 |
| Reflecting mirror | 160 |
| Screen | 170 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present invention is described in further detail.
First embodiment
Referring to Fig. 1, the projection arrangement 100 that first embodiment of the invention is provided includes a light source 120, liquid crystal display screen 130 of 110, light guide plate and a projecting lens 140.This light guide plate 120, this liquid crystal display screen 130 and this projecting lens 140 set gradually along the light direction of this light source 110.
In present embodiment, this light source 110 is multiple LED, evenly distributed on a circuit board 150 in matrix, and is positioned at this light guide plate 120 side away from this liquid crystal display screen 130.In present embodiment, this light source 110 be provided around reflecting mirror 160, to improve the utilization rate of the light that this light source 110 sends.The quantity of this reflecting mirror 160 and position can be adjusted as required, if space is sufficient, can be respectively provided with a reflecting mirror 160 in the surrounding of light source 110, if narrow space, can only arrange a reflecting mirror 160 or be not provided with.
Incide in this liquid crystal display screen 130 after the light uniformization that this light guide plate 120 provides for making this light source 110.This light guide plate 120 includes first surface 121 second surface 122 opposing with this first surface 121 and is connected the side 123 of this first surface 121 and this second surface 122.This light source 110 is arranged on the side of this first surface 121, and now, this first surface 121 is the incidence surface of this light guide plate 120.Reflecting material can be coated with on this side 123 to form a reflecting layer 123a, increase the reflection to light.It is coated with one layer of transmission film 122a at this second surface 122, increases the transmission to light, thus improve the light utilization of this light source 110.
This liquid crystal display screen 130 includes a liquid crystal layer 131, this liquid crystal layer 131 controls the number of amount of light by the switch of liquid crystal, specifically can be realized by a drive circuit, such as: when liquid crystal does not rotates, light all passes through, and when liquid crystal rotates 180 degree, light is the most shielded, and during liquid crystal rotation 90 degree, have the light of half to pass through.It is faster than the speed of rotational micromirror sheet that this anglec of rotation by controlling liquid crystal controls amount of light indirectly, so, can accelerate the response speed of this projection arrangement 100.With use compared with micromirror, when the pixel required is too high, uses this liquid crystal display screen 130 that the liquid crystal fewer than micromirror quantity can be used to produce identical GTG, there is higher resolution, it is to avoid increase the quantity of micromirror, make the simple in construction of this projection arrangement 100.
This projecting lens 140 is arranged at the light emission side of this liquid crystal display screen 130, for image projection to the screen 170 shown by this liquid crystal display screen 130.
Preferably, this projection arrangement 100 can also include a colored filter (not shown), and this colored filter is arranged between this liquid crystal display screen 130 and this projecting lens 140.This colored filter is used for forming coloured image.
Second embodiment
Refer to Fig. 2, the projection arrangement 200 that second embodiment of the invention is provided, the projection arrangement 100 provided with the first embodiment is substantially the same, and difference is, light source 210 is not arranged on the side of first surface 221, but is directly embedded on this first surface 221 by multiple LED.So, space, the miniaturization of the most whole projection arrangement 200 can be saved.On first surface 221, specifically offer a lot of groove 221a, the shape of this groove 221a is just closed with the matching form of this LED, the plurality of LED is embedded in this groove 221a, simultaneously, one layer of reflecting material can also be coated with on the position that first surface 221 does not offers this groove 221a and form reflecting layer 221b, increase further the reflection to light, it is not necessary to be arranged around reflecting mirror at light source 210, so make whole projection arrangement 200 more miniaturization.
Although the present invention discloses as above the most in a preferred embodiment thereof, but, it is not limited to the present invention, it addition, those skilled in the art can also do other change etc. in spirit of the present invention.Certainly, these changes done according to present invention spirit, within all should being included in scope of the present invention.
Claims (4)
1. a projection arrangement, it includes a light source, light guide plate, one for showing image
Liquid crystal display screen and a projecting lens, this light guide plate is arranged at the incident side of this liquid crystal display screen, is used for making this light source
Inciding in this liquid crystal display screen after the light uniformization provided, this projecting lens is arranged at the light emission side of this liquid crystal display screen,
For image projection to the screen shown by this liquid crystal display screen, this light guide plate includes first surface and is somebody's turn to do
Second surface that first surface is opposing and connect the side of this first surface and this second surface, described first
Offering the groove coordinated with described light source on surface, described light source is embedded in described groove, and described
One surface is not offered the position of groove and is coated with reflecting layer.
2. projection arrangement as claimed in claim 1, it is characterised in that on the second surface of this light guide plate
It is provided with one layer of transmission film.
3. projection arrangement as claimed in claim 1, it is characterised in that this light source is multiple LED.
4. projection arrangement as claimed in claim 1, it is characterised in that this projection arrangement also includes
Colored filter, this colored filter is arranged between this liquid crystal display screen and this projecting lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210067651.3A CN103309134B (en) | 2012-03-15 | 2012-03-15 | Projection arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210067651.3A CN103309134B (en) | 2012-03-15 | 2012-03-15 | Projection arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103309134A CN103309134A (en) | 2013-09-18 |
| CN103309134B true CN103309134B (en) | 2016-08-31 |
Family
ID=49134508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210067651.3A Expired - Fee Related CN103309134B (en) | 2012-03-15 | 2012-03-15 | Projection arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103309134B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110597006B (en) * | 2017-11-10 | 2021-09-03 | 范永浩 | Liquid crystal projection screen |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6547400B1 (en) * | 1998-06-04 | 2003-04-15 | Seiko Epson Corporation | Light source device, optical device, and liquid-crystal display device |
| CN1823286A (en) * | 2003-07-14 | 2006-08-23 | 皇家飞利浦电子股份有限公司 | Ultra compact illumination system for display systems |
| CN101216608A (en) * | 2007-01-04 | 2008-07-09 | 樊思民 | Novel system for promoting micro-display light engine contrast |
| US7804548B2 (en) * | 2005-06-06 | 2010-09-28 | Seiko Epson Corporation | Electro-optical device, method of driving the same, and electronic apparatus |
| CN102971671A (en) * | 2010-07-06 | 2013-03-13 | 精工爱普生株式会社 | Light source device and projector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090128781A1 (en) * | 2006-06-13 | 2009-05-21 | Kenneth Li | LED multiplexer and recycler and micro-projector incorporating the Same |
| JP2009244360A (en) * | 2008-03-28 | 2009-10-22 | Brother Ind Ltd | Light pipe, illumination optical system and image projection device |
| CN102124397B (en) * | 2008-08-15 | 2015-08-19 | 微阳有限公司 | The recirculating system of brightness and method and the projector in conjunction with it is increased for using the photoconductive tube with one or more light source |
-
2012
- 2012-03-15 CN CN201210067651.3A patent/CN103309134B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6547400B1 (en) * | 1998-06-04 | 2003-04-15 | Seiko Epson Corporation | Light source device, optical device, and liquid-crystal display device |
| CN1823286A (en) * | 2003-07-14 | 2006-08-23 | 皇家飞利浦电子股份有限公司 | Ultra compact illumination system for display systems |
| US7804548B2 (en) * | 2005-06-06 | 2010-09-28 | Seiko Epson Corporation | Electro-optical device, method of driving the same, and electronic apparatus |
| CN101216608A (en) * | 2007-01-04 | 2008-07-09 | 樊思民 | Novel system for promoting micro-display light engine contrast |
| CN102971671A (en) * | 2010-07-06 | 2013-03-13 | 精工爱普生株式会社 | Light source device and projector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103309134A (en) | 2013-09-18 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20170315 |
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| CF01 | Termination of patent right due to non-payment of annual fee |