CN205721052U - Back projection device - Google Patents
Back projection device Download PDFInfo
- Publication number
- CN205721052U CN205721052U CN201620370706.1U CN201620370706U CN205721052U CN 205721052 U CN205721052 U CN 205721052U CN 201620370706 U CN201620370706 U CN 201620370706U CN 205721052 U CN205721052 U CN 205721052U
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- Prior art keywords
- light
- reflecting mirror
- screen
- scialyscope
- area
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Abstract
The utility model discloses a kind of back projection device, including screen and projecting cell, projecting cell includes the first scialyscope, the second scialyscope, the first reflecting mirror and the second reflecting mirror, the light beam that first scialyscope sends reflexes to screen through the first reflecting mirror and forms the first area of light, the light beam that second scialyscope sends reflexes to screen through the second reflecting mirror and forms the second area of light, and there is a common edge at the edge of the first area of light and the edge of the second area of light.The back projection device that this utility model provides can realize the seamless split of polylith image on a giant-screen so that the image more globality of display on screen, elegant in appearance；Avoid because frame intercepts the visual disorder that image brings, there is more rich representability.
Description
Technical field
This utility model relates to back projection device, particularly relates to a kind of back projection device.
Background technology
" rear-projection " i.e. rear projection, is to make use of projection and principle of reflection, screen and optical projection system is placed in one
Imaging system.In projection display apparatus, it is divided into orthographic projection (Front by its projection pattern Projection Display
And back projection two ways Projection).It is exactly scialyscope that orthographic projection is the most directly applied, and refers to that light is thrown
It is mapped to the imaging of screen front.And its principle of back projection is the bottom being arranged in fuselage by scialyscope in simple terms,
Signal, through reflection, projects the imaging of the translucent screen back side.Back projection TV is exactly the product of this principle,
Due to being integrated of scialyscope and screen, the user of back projection TV need not carry out pH effect to system so that
Its ease of use greatly exceed front projection machine.The generally thickness of back projecting system is thicker, is not suitable for general family
Front yard uses, but its frame is narrower, is suitable for giant-screen and makees the splicing of polylith image.
But, the existing back projection device used as splicing, the most substantially it can be seen that its frame, affects splicing
The overall display effect of rear screen.
Utility model content
Utility model purpose: the defect existed for above-mentioned prior art, this utility model aims to provide one and exists
The back projection device of polylith image seamless splicing on screen.
Technical scheme: a kind of back projection device, including screen and projecting cell, projecting cell include the first scialyscope,
Second scialyscope, the first reflecting mirror and the second reflecting mirror, the light beam that the first scialyscope sends is anti-through the first reflecting mirror
Being incident upon screen and form the first area of light, the light beam that the second scialyscope sends reflexes to screen through the second reflecting mirror and forms the
There is a common edge at two area of light, the edge of the first area of light and the edge of the second area of light.
Preferably, the first reflecting mirror and the second reflecting mirror are all coated with reflection of polarization film；The light that first scialyscope sends
Bundle becomes the first polarized beam through the second reflecting mirror, and the first polarized beam reflexes to screen shape through the first reflecting mirror
Become the first area of light；The second light beam that second scialyscope sends becomes the second polarized beam through the first reflecting mirror, the
Two polarized beams reflex to screen through the second reflecting mirror and form the second area of light.
Further preferably, polarized light conversion dress it is equipped with before the camera lens of the first scialyscope and before the camera lens of the second scialyscope
Put；First reflecting mirror and the second reflecting mirror are all coated with reflection of polarization film；The light beam that first scialyscope sends is through polarization
Light conversion device becomes the first polarized beam, and the first polarized beam is anti-through the first reflecting mirror again through the second reflecting mirror
It is incident upon screen and forms the first area of light；The light beam that second scialyscope sends becomes the second polarization through polarized light conversion device
Light beam, the second polarized beam reflexes to screen through the second reflecting mirror again through the first reflecting mirror and forms the second area of light.
It is furthermore preferred that the polarization direction of the first polarized beam is orthogonal with the polarization direction of the second polarized beam.
It is furthermore preferred that the first reflecting mirror and the second reflecting mirror are all coated with highly reflecting films.
It is furthermore preferred that highly reflecting films are metal film or deielectric-coating.
It is furthermore preferred that screen is transparent screen.
Beneficial effect: compared to existing technology, the back projection device that this utility model provides can be at large-size screen monitors
The seamless split of polylith image is realized so that the image more globality of display on screen on curtain, elegant in appearance；
Avoid because frame intercepts the visual disorder that image brings, there is more rich representability.Further, in preferably side
The structure that the reflection of polarization film used in case enables to whole back projection device is compacter, and volume is less, takies
Less space；And nature light can effectively be turned by the polarized light conversion device used in another preferred version
Changing required polarized light thus reduce the optical energy loss caused due to polarization of light, Showing Effectiveness On Screen is more preferably.
Accompanying drawing explanation
Fig. 1 (a), Fig. 1 (b) are the structural representation of this utility model embodiment 1；
Fig. 2 (a), Fig. 2 (b) are the structural representation of this utility model embodiment 2；
Fig. 3 is the structural representation of this utility model embodiment 3.
Detailed description of the invention
Embodiment 1: a kind of back projection device, such as the front view that Fig. 1 (a) is the present embodiment back projection device, in figure
Not shown screen 1, Fig. 1 (b) is the top view of the present embodiment back projection device.
Including screen 1 and projecting cell.Screen 1 is transparent screen 1, selects glass screen 1 in the present embodiment,
It can also be lucite screen 1；Projecting cell includes that first scialyscope the 2, second scialyscope 3, first is anti-
Penetrate mirror 4 and the second reflecting mirror 5；First reflecting mirror 4 and the second reflecting mirror 5 are all coated with highly reflecting films, high reflection
The reflectance ＞ 90% of film, the highly reflecting films in the present embodiment are metal film, and highly reflecting films can also be deielectric-coating.
The light beam that first scialyscope 2 sends reflexes to screen 1 through the first reflecting mirror 4 and forms the first area of light 6, the
The light beam that two scialyscopes 3 send reflexes to screen 1 through the second reflecting mirror 5 and forms the second area of light 7, the first area of light
There is a common edge at the edge of 6 and the edge of the second area of light 7.
The present embodiment show only the structure of a projecting cell, according to the emergent light line angle of scialyscope in Fig. 1
Degree, rationally arranges the first reflecting mirror 4 and angle of the second reflecting mirror 5, so that the first scialyscope 2 sends
Light beam and the light beam that sends of the second scialyscope 3 when projecting on screen 1, the edge and second of the first area of light 6
The edge of area of light 7 just has a limit to overlap, i.e. common edge does not has gap between two width images, the most permissible
Forming a seamless image, the light 3 transmitted through screen 1 incides in human eye.
The back projection device that this utility model provides can also include multiple projecting cell, and multiple projecting cells are formed
Multiple area of light all gaplesss each other are adjacent, piece together a complete image on a screen 1.
Embodiment 2: a kind of back projection device, Fig. 2 (a) is the front view of the present embodiment back projection device, in figure not
Illustrating screen 1, Fig. 2 (b) is the top view of the present embodiment back projection device.
Including screen 1 and projecting cell.Screen 1 is transparent screen 1, selects glass screen 1 in the present embodiment,
It can also be lucite screen 1；Projecting cell includes that first scialyscope the 2, second scialyscope 3, first is anti-
Penetrate mirror 4 and the second reflecting mirror 5；First reflecting mirror 4 and the second reflecting mirror 5 are all coated with highly reflecting films, high reflection
The reflectance ＞ 90% of film, the highly reflecting films in the present embodiment are metal film, and highly reflecting films can also be deielectric-coating.
First reflecting mirror 4 and the second reflecting mirror 5 are all coated with reflection of polarization film；The wherein polarization of the first reflecting mirror 4
First polarization state is reflected by film, and to the second polarization state transmission, the polarizing coating of the second reflecting mirror 5 is to the second light
Polarization state reflects, to the first polarization state transmission.
The light of the first scialyscope 2 and the second scialyscope 3 outgoing is nature polarized light；
The light beam that first scialyscope 2 sends becomes the first polarized beam, the first polarized light through the second reflecting mirror 5
Bundle is the first polarization state, and the first polarized beam reflexes to screen 1 through the first reflecting mirror 4 and forms the first area of light 6；
The second light beam that second scialyscope 3 sends becomes the second polarized beam through the first reflecting mirror 4, and second is inclined
The light beam that shakes is the second polarization state, and the second polarized beam reflexes to screen 1 through the second reflecting mirror 5 and forms the second light
Territory 7；
There is a common edge at the edge of the first area of light 6 and the edge of the second area of light 7；The polarization of the first polarized beam
Direction is orthogonal with the polarization direction of the second polarized beam, and in the present embodiment, the first polarized beam is that horizontal line is inclined
Light, the second polarized beam is vertical line polarisation；First polarized beam can also be corresponding for left-hand polarization light
The second polarized beam be right-handed polarized light.
The present embodiment show only the structure of a projecting cell, according to the emergent light line angle of scialyscope in Fig. 2
Degree, rationally arranges the first reflecting mirror 4 and angle of the second reflecting mirror 5, so that the first scialyscope 2 sends
Light beam and the light beam that sends of the second scialyscope 3 when projecting on screen 1, the edge and second of the first area of light 6
The edge of area of light 7 just has a limit to overlap, i.e. common edge does not has gap between two width images, the most permissible
Forming a seamless image, the light 3 transmitted through screen 1 incides in human eye.
The back projection device that this utility model provides can also include multiple projecting cell, and multiple projecting cells are formed
Multiple area of light all gaplesss each other are adjacent, piece together a complete image on a screen 1.
The present embodiment compared with Example 1, the present embodiment in the top view shown in Fig. 2 (b), the first scialyscope
After 2 can be positioned over the second reflecting mirror 5, after the second scialyscope 3 can be positioned over the first reflecting mirror 4, thus overall
Border width can be narrower, more saves space and elegant in appearance；It is noted that " afterwards " stated is only herein
In the drawings as the aid illustration in orientation, it is therefore an objective to help to understand position relationship in the drawings, rather than to this practicality
The concrete restriction of new technique scheme.
Embodiment 3: as it is shown on figure 3, a kind of back projection device, including screen 1 and projecting cell.Screen 1 is
Transparent screen 1, selects glass screen 1, it is also possible to for lucite screen 1 in the present embodiment；Projecting cell
Including the first scialyscope the 2, second scialyscope the 3, first reflecting mirror 4 and the second reflecting mirror 5；First reflecting mirror 4
All being coated with highly reflecting films with the second reflecting mirror 5, the reflectance ＞ 90% of highly reflecting films, the height in the present embodiment is anti-
Penetrating film is metal film, and highly reflecting films can also be deielectric-coating；With the second scialyscope before the camera lens of the first scialyscope 2
Polarized light conversion device 8, compared with Example 2, the polarized light that the present embodiment increases it is equipped with before the camera lens of 3
Light efficiency can be promoted 20%-30% by conversion equipment 8.
First reflecting mirror 4 and the second reflecting mirror 5 are all coated with reflection of polarization film；The wherein polarization of the first reflecting mirror 4
First polarization state is reflected by film, and to the second polarization state transmission, the polarizing coating of the second reflecting mirror 5 is to the second light
Polarization state reflects, to the first polarization state transmission.
The light of the first scialyscope 2 and the second scialyscope 3 outgoing is nature polarized light；
The light beam that first scialyscope 2 sends becomes the first polarized beam, the first polarization through polarized light conversion device 8
Light beam is the first polarization state, and the first polarized beam reflexes to through the first reflecting mirror 4 through the second reflecting mirror 5 again
Screen 1 forms the first area of light 6；
The light beam that second scialyscope 3 sends becomes the second polarized beam, the second polarization through polarized light conversion device 8
Light beam is the second polarization state, and the second polarized beam reflexes to through the second reflecting mirror 5 through the first reflecting mirror 4 again
Screen 1 forms the second area of light 7.
There is a common edge at the edge of the first area of light 6 and the edge of the second area of light 7；The polarization of the first polarized beam
Direction is orthogonal with the polarization direction of the second polarized beam, and in the present embodiment, the first polarized beam is that horizontal line is inclined
Light, the second polarized beam is vertical line polarisation；First polarized beam can also be corresponding for left-hand polarization light
The second polarized beam be right-handed polarized light.
The present embodiment figure show only the structure of a projecting cell, according to the emergent ray angle of scialyscope,
First reflecting mirror 4 and the angle of the second reflecting mirror 5 is rationally set, so that the light that the first scialyscope 2 sends
When the light beam that bundle and the second scialyscope 3 send projects on screen 1, the edge of the first area of light 6 and the second area of light
The edge of 7 just has a limit to overlap, i.e. common edge does not has gap between two width images, therefore can be formed
One seamless image, the light 3 transmitted through screen 1 incides in human eye.
The back projection device that this utility model provides can also include multiple projecting cell, and multiple projecting cells are formed
Multiple area of light all gaplesss each other are adjacent, piece together a complete image on a screen 1.
Compared with Example 1, after the first scialyscope 2 can be positioned over the second reflecting mirror 5, second throws the present embodiment
After shadow machine 3 can be positioned over the first reflecting mirror 4, so overall border width can be narrower, more save space and U.S.
See generous；It is noted that " afterwards " stated is the most in the drawings as the aid illustration in orientation herein, it is therefore an objective to
Help to understand position relationship in the drawings, rather than the concrete of technical solutions of the utility model is limited.
Below it is only preferred implementation of the present utility model, it should be appreciated that above-described embodiment is only for illustrating this practicality
Novel technology design and feature, its object is to for skilled in the art realises that content of the present utility model also
Implementing according to this, not detailed description of the invention is exhaustive, can not limit protection domain of the present utility model with this.
All modify according to the technical solution of the utility model or equivalent, without deviating from this utility model technology
The objective of scheme and scope, it all should be contained in the middle of right of the present utility model.
Claims (7)
1. a back projection device, including screen (1) and projecting cell, it is characterised in that described projecting cell
Including the first scialyscope (2), the second scialyscope (3), the first reflecting mirror (4) and the second reflecting mirror (5),
The light beam that first scialyscope (2) sends reflexes to screen (1) through the first reflecting mirror (4) and forms the first area of light
(6) light beam that, the second scialyscope (3) sends reflexes to screen (1) through the second reflecting mirror (5) and forms the
There is a common edge at two area of light (7), the edge of the first area of light (6) and the edge of the second area of light (7).
Back projection device the most according to claim 1, it is characterised in that described first reflecting mirror (4) and
Second reflecting mirror (5) is all coated with reflection of polarization film；The light beam that first scialyscope (2) sends is through the second reflection
Mirror (5) becomes the first polarized beam, and the first polarized beam reflexes to screen (1) through the first reflecting mirror (4)
Form the first area of light (6)；The second light beam that second scialyscope (3) sends becomes through the first reflecting mirror (4)
Second polarized beam, the second polarized beam reflexes to screen (1) through the second reflecting mirror (5) and forms the second area of light
(7)。
Back projection device the most according to claim 2, it is characterised in that described first scialyscope (2)
It is equipped with polarized light conversion device (8) before camera lens and before the camera lens of the second scialyscope (3)；First reflecting mirror (4)
Reflection of polarization film all it is coated with the second reflecting mirror (5)；The light beam that first scialyscope (2) sends turns through polarized light
Changing device (8) becomes the first polarized beam, and the first polarized beam is anti-through first again through the second reflecting mirror (5)
Penetrate mirror (4) to reflex to screen (1) and form the first area of light (6)；The light beam warp that second scialyscope (3) sends
Polarized light conversion device (8) becomes the second polarized beam, and the second polarized beam is through the first reflecting mirror (4) again
Reflex to screen (1) through the second reflecting mirror (5) and form the second area of light (7).
4. according to the back projection device described in Claims 2 or 3, it is characterised in that the first polarized beam inclined
The direction that shakes is orthogonal with the polarization direction of the second polarized beam.
Back projection device the most according to claim 1, it is characterised in that described first reflecting mirror (4) and
Second reflecting mirror (5) is all coated with highly reflecting films.
Back projection device the most according to claim 5, it is characterised in that described highly reflecting films are metal film
Or deielectric-coating.
Back projection device the most according to claim 1, it is characterised in that described screen (1) is transparent screen
Curtain (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620370706.1U CN205721052U (en) | 2016-04-28 | 2016-04-28 | Back projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620370706.1U CN205721052U (en) | 2016-04-28 | 2016-04-28 | Back projection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205721052U true CN205721052U (en) | 2016-11-23 |
Family
ID=57291706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620370706.1U Withdrawn - After Issue CN205721052U (en) | 2016-04-28 | 2016-04-28 | Back projection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205721052U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105700282A (en) * | 2016-04-28 | 2016-06-22 | 南京先进激光技术研究院 | Rear projection device |
| CN108121142A (en) * | 2018-02-07 | 2018-06-05 | 全普光电科技(上海)有限公司 | A kind of micro- projector equipment |
-
2016
- 2016-04-28 CN CN201620370706.1U patent/CN205721052U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105700282A (en) * | 2016-04-28 | 2016-06-22 | 南京先进激光技术研究院 | Rear projection device |
| CN105700282B (en) * | 2016-04-28 | 2018-04-06 | 徐州奕创光电科技有限公司 | Back projection device |
| CN108121142A (en) * | 2018-02-07 | 2018-06-05 | 全普光电科技(上海)有限公司 | A kind of micro- projector equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170406 Address after: 210038, Longgang economic and Technological Development Zone, Nanjing, Nanjing Heng Road, science and Technology Park, building A Patentee after: Naijing Zhongke Shenguang Technology Co., Ltd. Address before: 210038 Jiangsu economic and Technological Development Zone, Nanjing, Longgang science and Technology Park Road, building, room A, room 702 Patentee before: NANJING INSTITUTE OF ADVANCED LASER TECHNOLOGY |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170427 Address after: 210038, Longgang economic and Technological Development Zone, Nanjing, Nanjing Heng Road, science and Technology Park, building A Patentee after: Nanjing Yiyu Photoelectric Technology Co., Ltd. Address before: 210038, Longgang economic and Technological Development Zone, Nanjing, Nanjing Heng Road, science and Technology Park, building A Patentee before: Naijing Zhongke Shenguang Technology Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170823 Address after: 221300, Xuzhou, Jiangsu City, Pizhou province Pizhou Economic Development Zone on the north side of Liaohe Road, North Huashan Road West Patentee after: Xuzhou hit Photoelectric Technology Co., Ltd. Address before: 210038, Longgang economic and Technological Development Zone, Nanjing, Nanjing Heng Road, science and Technology Park, building A Patentee before: Nanjing Yiyu Photoelectric Technology Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161123 Effective date of abandoning: 20180406 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20161123 Effective date of abandoning: 20180406 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |