CN104991412B - Ultrashort out-of-focus projection device - Google Patents
Ultrashort out-of-focus projection device Download PDFInfo
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- CN104991412B CN104991412B CN201510495920.XA CN201510495920A CN104991412B CN 104991412 B CN104991412 B CN 104991412B CN 201510495920 A CN201510495920 A CN 201510495920A CN 104991412 B CN104991412 B CN 104991412B
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- reflecting mirror
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Abstract
The invention provides ultrashort out-of-focus projection device, relate to closely projection field.The ultrashort out-of-focus projection device that the present invention provides, using the mode arranging reflecting mirror in the rear-projection side of curtain, it by being provided with the first reflecting mirror in the rear-projection side of curtain, and have adjusted projector lens towards, the projection ray penetrated by camera lens can be reflexed on curtain through the first reflecting mirror.Due to from the distance of camera lens irradiant arrival curtain time be certain, by being provided with the first reflecting mirror, the a part of space between the first reflecting mirror and curtain is made to be recycled (referring to be have passed through this segment space for twice by the light emitted by projector), and then make, in the case of not changing total distance of light walking, to reduce the size playing space.
Description
Technical field
The present invention relates to closely projection field, in particular to ultrashort out-of-focus projection device.
Background technology
Projector, also known as scialyscope, is a kind of equipment that can project on curtain by image or video image, Ke Yitong
Cross the same computer of different interfaces, VCD, DVD, BD, game machine, DV etc. to be connected, and then play corresponding video signal.Projection
Instrument is widely used in family, office, school and public place of entertainment, different according to working method, has the inhomogeneities such as CRT, LCD, DLP
Type.One projector equipment completed should include two parts, i.e. projector and screen (curtain).Screen is used to show image
, projector be used to generate concurrent projection as.
Along with life and the development of electronic technology, user is more desirable has the projector equipment needing to use space less.As
Shown in Fig. 1, giving the projector equipment in correlation technique, this projector equipment includes two parts, is projector 13 and screen respectively
Curtain.Distance between screen and projector 13 determines the space shared by projector 13.In Fig. 1 between projector 13 and screen
Triangle space in be projector 13 light that sent and project on screen, this some light if subjected to stop,
Then cannot present a complete image on screen, this is also to project a kind of situation unsuccessfully.Therefore, in the normal work of projector 13
The when of work, need to ensure there is no any obstacle in this part triangle space between projector 13 and screen, this part three
Need the when that angular space projector 13 the most just normally working the space used, i.e. to play space 12 (Tu1Zhong projection ray
The space that surrounded of dotted line and curtain 11).
In order to reduce the volume playing space, those skilled in the art are angularly carried out from light intensity, projector hardware
Improve, reduce the volume playing space to a certain extent, but the light that projector is sent is to have certain angle limits
, it is impossible to unconfined expansion, therefore, the technological improvement angularly carried out from light intensity, hardware device, still it is difficult to effectively
Control play space size.
Summary of the invention
In view of this, the purpose of the embodiment of the present invention is to provide ultrashort out-of-focus projection device, plays the big of space to reduce
Little.
First aspect, embodiments provides ultrashort out-of-focus projection device, including:
Projector, curtain and the first reflecting mirror；
First reflecting mirror is arranged on the rear-projection side of curtain；
The camera lens of projector towards the first reflecting mirror, and, camera lens the projection ray penetrated can through the first reflecting mirror, reflect
To curtain.
In conjunction with first aspect, embodiments provide the first possible embodiment of first aspect, wherein, institute
Stating the first reflecting mirror is square planar mirror, and described first reflecting mirror can rotate along its top margin；
Or, the plane at described first reflecting mirror place and the plane at described curtain place have angle.
In conjunction with first aspect, embodiments provide the embodiment that the second of first aspect is possible, wherein, throw
Shadow instrument is positioned at top or the bottom of described curtain.
In conjunction with first aspect, embodiments provide the third possible embodiment of first aspect, wherein, also
Including fixed support, fixed support is fixing with the first reflecting mirror and projector respectively to be connected.
In conjunction with first aspect, embodiments provide the 4th kind of possible embodiment of first aspect, wherein, Gu
Fixed rack includes rack body, and the first bracing frame of being connected with rack body respectively and the second bracing frame, the first bracing frame
Removably connecting with projector, the second bracing frame and the first reflecting mirror removably connect.
In conjunction with first aspect, embodiments provide the 5th kind of possible embodiment of first aspect, wherein,
One bracing frame includes flat base, is arranged on the baffle plate at Base edge, and connects the expansion link of base and baffle plate；
Universal joint it is provided with on expansion link；
Base is fixing with rack body to be connected.
In conjunction with first aspect, embodiments provide the 6th kind of possible embodiment of first aspect, wherein,
Two bracing frames include multiple clamper, and one end of each clamper is all fixing with rack body to be connected, and each clamper is another
One end all removably connects with the first reflecting mirror.
In conjunction with first aspect, embodiments provide the 7th kind of possible embodiment of first aspect, wherein, also
Including the second reflecting mirror；Second reflecting mirror is between the first reflecting mirror and curtain, and the second reflecting mirror is positioned at the first reflecting mirror
Bottom；
The projection ray penetrated by camera lens can sequentially pass through the second reflecting mirror and the first reflecting mirror, reflexes on curtain.
In conjunction with first aspect, embodiments provide the 8th kind of possible embodiment of first aspect, wherein, also
Including shell, the edge of described first reflecting mirror and the edge of described curtain are by shading shell seal.
In conjunction with first aspect, embodiments provide the 9th kind of possible embodiment of first aspect, wherein, institute
State the first reflecting mirror and described second reflecting mirror is single-surface mirror；
The 10%-25% that area is curtain area of described first reflecting mirror；
The 10%-15% that area is curtain area of described second reflecting mirror.
The ultrashort out-of-focus projection device that the embodiment of the present invention provides, uses the mode arranging reflecting mirror in the rear-projection side of curtain,
Project on curtain with the image directly projector sent of the prior art so that in order to reach large-size screen monitors projection, it is necessary to
Projector being arranged far from the position of curtain, and then causes playing that space is excessive to be compared, it is set by the rear-projection side at curtain
Put the first reflecting mirror, and have adjusted projector lens towards so that the projection ray penetrated by camera lens can be anti-through first
Penetrate mirror, reflex on curtain.Due to from the distance of camera lens irradiant arrival curtain time be certain, by being provided with first
Reflecting mirror so that a part of space between the first reflecting mirror and curtain is recycled and (refers to by the light emitted by projector
Have passed through this segment space for twice), and then make, in the case of not changing total distance of light walking, to reduce broadcasting space
Size.
For making the above-mentioned purpose of the present invention, feature and advantage to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by embodiment required use attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, and it is right to be therefore not construed as
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to this
A little accompanying drawings obtain other relevant accompanying drawings.
Fig. 1 shows the ultrashort out-of-focus projection system schematic of the projector included in correlation technique and curtain；
Fig. 2 shows the basic block diagram of the ultrashort out-of-focus projection device that the embodiment of the present invention provided；
Fig. 3 shows the first example of the first bracing frame of the ultrashort out-of-focus projection device that the embodiment of the present invention provided
Figure；
Fig. 4 shows the optimization structure chart of the ultrashort out-of-focus projection device that the embodiment of the present invention provided；
Fig. 5 shows the basic structure top view of the ultrashort out-of-focus projection device that the embodiment of the present invention provided；
Fig. 6 shows the second example of the first bracing frame of the ultrashort out-of-focus projection device that the embodiment of the present invention provided
Figure；
Fig. 7 shows the exemplary plot of the second bracing frame of the ultrashort out-of-focus projection device that the embodiment of the present invention provided；
Fig. 8 shows the optimization structure top view of the ultrashort out-of-focus projection device that the embodiment of the present invention provided；
Fig. 9 shows that the projector of the ultrashort out-of-focus projection device that the embodiment of the present invention provided is positioned at the first reflecting mirror top
Side view；
Figure 10 shows increasing on the top of the first reflecting mirror of the ultrashort out-of-focus projection device that the embodiment of the present invention provided
The side view of rotary shaft；
Figure 11 A shows the shell rear perspective view of the ultrashort out-of-focus projection device that the embodiment of the present invention provided；
Figure 11 B shows the shell front perspective view of the ultrashort out-of-focus projection device that the embodiment of the present invention provided.
First reflecting mirror 101, curtain 102, projector 103, baffle plate 201, base 202, universal joint 203, expansion link 204,
Second reflecting mirror 301, steps up portion 601, pars contractilis 602, rotary shaft 901.
Detailed description of the invention
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Generally exist
Can arrange and design with various different configurations with the assembly of the embodiment of the present invention that illustrates described in accompanying drawing herein.Cause
This, be not intended to limit claimed invention to the detailed description of the embodiments of the invention provided in the accompanying drawings below
Scope, but it is merely representative of the selected embodiment of the present invention.Based on embodiments of the invention, those skilled in the art are not doing
The every other embodiment obtained on the premise of going out creative work, broadly falls into the scope of protection of the invention.
In terms of office meeting, classroom instruction, projector can be frequently used, to a certain degree on from the point of view of, its effect just
It is to project according to set rule.After video signal being supplied to projector such as computer, projector can be according to display letter
Number content carry out the projection of image, after TV signal is given to projector by TV set-top box, projector then can be according to TV
The content of signal projects.That matches with projector also has curtain, and the effect of curtain is imaging, namely by projector institute
The image display emitted is out.
Along with the demand used, in some cases, such as convention, when advertising, user expectation makes
Use large-size screen monitors curtain to carry out showing that (picture that large-size screen monitors actually refer to display is big, and certainly, picture is the biggest, and the curtain of needs is also
The biggest), to ensure distance curtain spectators remotely it can be seen that content shown on curtain.Emitted by projector
The angle of light be certain, therefore, in order to show bigger picture, then projector must be arranged on distance curtain relatively
Remote place, it is excessive that this also has led to playing space, and can not there are other objects in playing space, otherwise will necessarily
(if playing in space the object having other, then the image that projector can be hindered to be sent is irradiated to have influence on the display of picture
On curtain).Therefore, how to control to play the size in space, become one in the urgent need to the problem being solved.
In view of this, this application provides ultrashort out-of-focus projection device, as in figure 2 it is shown, include:
Projector 103, curtain 102 and the first reflecting mirror 101；
First reflecting mirror 101 is arranged on the rear-projection side of curtain 102；
The camera lens of projector 103 towards the first reflecting mirror 101, and, camera lens the projection ray penetrated can through first reflection
Mirror 101, reflexes on curtain 102.
It should be noted that curtain 102 is typically with plane curtain 102 appearance, beholder should be carried out just throwing side
Viewing, the first reflecting mirror 101 is then to be arranged on rear-projection side.Projector 103 in correlation technique can be arranged on just to be thrown
Side, it is also possible to be arranged on rear-projection side.When projector 103 is arranged on rear-projection side when, need to change the projection side of projector 103
Formula so that be positioned at and just throw the spectators of side and can see normal picture rather than reverse picture.
And ultrashort out-of-focus projection device provided herein, then need the first reflecting mirror 101 is arranged on rear-projection side.Mainly
Reason is, reflecting mirror is typically presented in single-surface mirror, even if not being single-surface mirror, is just arranged on by the first reflecting mirror 101
Throw side, it is also possible to influence whether that beholder watches picture shown on curtain 102.
As in figure 2 it is shown, give projector 103, curtain 102 and a kind of position relationship of the first reflecting mirror 101.Actual
On, the position relationship of three is not limited thereto, and such as, projector 103 can be arranged on the position being closer to the first reflecting mirror 101
Put, the position that curtain 102 further away from each other can be arranged on of the first reflecting mirror 101.But, anyway arrange, it shall be guaranteed that
, curtain 102 can not block projector 103 to the light emitted by the first reflecting mirror 101, otherwise can cause curtain 102 nothing
Method shows complete picture normally.And the size of the first reflecting mirror 101 can not be too small, whole image otherwise cannot be reflected,
It should be guaranteed that, whole image light emitted in the camera lens by projector 103 should be carried out instead by the first reflecting mirror 101
Penetrate, and image light is all reflexed on curtain 102.Ensureing that the first reflecting mirror 101 can be by emitted by projector 103
Projection ray can all reflex to curtain 102 in the case of, the first reflecting mirror 101 and curtain 102, the phase of projector 103
Position relationship all can be adjusted according to specifically used needs, this is repeated no more.
Concrete, generally, the first reflecting mirror 101 and curtain 102 are the most all planes, can be the
The plane at one reflecting mirror 101 place and the plane at curtain 102 place be have angle (plane at the first reflecting mirror 101 place with
The plane at curtain 102 place is nonparallel), it is also possible to it is the plane at the first reflecting mirror 101 place and putting down of curtain 102 place
Face is parallel.
Owing to the volume of the first reflecting mirror 101 is relatively big, therefore the first reflecting mirror 101 can not be fixed on projector, needs
Independent fixed structure is used to be fixed.
Preferably, the first reflecting mirror 101 is plane mirror, and be arranged in parallel with curtain 102.
During use, need to use the first reflecting mirror 101 to reflex on curtain 102 by the light emitted by projector 103, with
The prolongation of the time of use, the structure fixing the first reflecting mirror 101 and curtain 102 may produce deformation, cause reflective projection
Can not imaging normally.Now, then need the first reflecting mirror 101, curtain 102 and the position relationship of projector 103 three
Carry out rectification again.If the first reflecting mirror 101 be arranged in parallel with curtain 102, then can simplify this process corrected (concrete
Referring to, the difficulty calculating position relationship and light angle is relatively low), otherwise, when the first reflecting mirror 101 and curtain 102 are in non-flat
During row state, calculate position relationship and angle then can become the most complicated.
In theory, projector 103 can in an arbitrary position, but, it is contemplated that the weight of projector 103, projector
103 positions that should be positioned close to ground, or be directly placed on ground.Namely projector 103 is positioned at curtain 102
Bottom.Wherein, bottom refers in a state of use, near the position on ground.Certainly, projector 103 can also is that and is positioned at curtain
The top of 102, but no matter projector 103 is positioned at the top of curtain 102 or bottom (certainly, projector 103 is positioned at curtain 102
Left part and right part be also to realize technique effect), all it should be guaranteed that the light emitted by projector 103 can be through
The reflection of one reflecting mirror 101, reflexes on curtain 102.It should be noted that restriction to projector 103 position herein, all
Should be regarded as the restriction of camera lens to projector 103.
When carrying out normal projection, the position relationship of projector 103, curtain 102 and the first reflecting mirror 101 three should be
Changeless, fixed structure namely should be used thus to keep the position relationship of geo-stationary between this three keeping,
Ultrashort out-of-focus projection device provided herein, also includes fixed support, fixed support respectively with the first reflecting mirror 101 and projection
Instrument 103 is fixing to be connected.
Fixed support can have the form of multiple existence, but it should ensure, fixed support can be anti-respectively at first
Penetrate mirror 101 and the fixing connection of projector 103, to ensure that the first reflecting mirror 101 and projector 103 have the position relationship of geo-stationary
(image that projector 103 is cast out all should be reflexed on curtain 102 by the first reflecting mirror 101, and namely first is anti-
Penetrate mirror 101 and at least should receive whole projection rays that projector 103 is emitted, therefore, the first reflecting mirror 101 and curtain
The position relationship of cloth 102 is necessarily fixed up).Curtain 102 is typically to be suspended on specifies position, can be anti-according to first
Penetrate the position of mirror 101, suitably adjust the position of curtain 102.
Can be provided for hanging the hook of curtain 102, or clip on fixed support, fix curtain 102.
Concrete, fixed support includes rack body, and the first bracing frame and second being connected respectively with rack body
Bracing frame, the first bracing frame removably connects with projector 103, and the second bracing frame and the first reflecting mirror 101 removably connect.Make
User can according to concrete service condition, select by fixed support, projector 103, curtain 102 and the first reflecting mirror 101 this
Four are partially separated arrangement, and needs use when, projector 103, curtain 102 and the first reflecting mirror 101 are arranged on solid
On fixed rack, to begin to use.
It should be noted that the position relationship of the first bracing frame and the second bracing frame should set, so that projection
Instrument 103 and the first reflecting mirror 101 can directly use after being installed on fixed support and (refer to, at projector 103, curtain 102 and
After first reflecting mirror 101 is all fixed on fixed support, the projection ray of projector 103 camera lens injection can be through the first reflecting mirror
101, reflex on curtain 102).
On the basis of the diagram given by Fig. 2, (in Fig. 2, the first reflecting mirror 101 and curtain 102 are the shapes being parallel to each other
State), the first reflecting mirror 101 is preferably square plane mirror.And can be by arranging at the upper edge of the first reflecting mirror 101
Rotary shaft 901, makes the first reflecting mirror 101 to rotate, and the schematic diagram of rotation is as shown in Figure 10.
Except arranging the mode of rotary shaft 901, it is also possible to be that the first reflecting mirror 101 is in nonparallel with curtain 102
State, namely has angle between the first reflecting mirror 101 and curtain 102.
Further, as it is shown on figure 3, the first bracing frame includes flat base 202, is arranged on base 202 edge
Baffle plate 201, and connect the expansion link 204 of base 202 and baffle plate 201；
Universal joint 203 it is provided with on expansion link 204；
Base 202 is fixing with rack body to be connected.
Base 202 is used to support projection instrument 103, and baffle plate 201 is used to the relative position of fixing projector 103.This
Place, the quantity of baffle plate 201 can be one, it is also possible to is multiple.I.e., it is possible to the surrounding at base 202 is respectively provided with baffle plate 201,
And each baffle plate 201 is all connected with base 202 by respective expansion link 204, and, on each expansion link 204
To arrange universal joint 203.Thus, expansion link 204 can be with the distance of adjusting base 202 with baffle plate 201, and universal joint 203 can be adjusted
Joint base 202 and the angle of baffle plate 201, and then the projector 103 of different model can be fixed by baffle plate 201, and
And by the position of controllable register 201, it is possible to projector 103 is fixed on different positions, goes out with the position at projector 103
The when of existing deviation, user can carry out the adjustment of position according to specific circumstances.
It should be noted that the end face of base 202 to be preferably square planar (the most square in view of projector 103
), and, baffle plate 201 can be separately positioned on four limits of base 202, and each baffle plate 201 is all stretched by one
Bar 204 is connected with base 202.
Device except fixing projection, in addition it is also necessary to the device fixing the first reflecting mirror 101 is set, i.e. the second bracing frame bag
Including multiple clamper, one end of each clamper is all fixing with rack body to be connected, and the other end of each clamper is all with the
One reflecting mirror 101 removably connects
The effect of clamper is to fix the first reflecting mirror 101.Concrete, clamper can also arrange stretching structure, with
Adjust the position of the first reflecting mirror 101.
Except using independent first reflecting mirror 101 to reflect, it is also possible to use multiple reflecting mirror jointly to act on,
Reduce broadcasting space further.It is, ultrashort out-of-focus projection device provided herein also includes the second reflecting mirror 301；
Second reflecting mirror 301 is between the first reflecting mirror 101 and curtain 102, and the second reflecting mirror 301 is positioned at the first reflecting mirror 101
Bottom；
The projection ray penetrated by camera lens can sequentially pass through the second reflecting mirror 301 and the first reflecting mirror 101, reflexes to curtain
On 102.
As shown in Figure 4, give the first reflecting mirror 101 and the second reflecting mirror 301 jointly act under structure.Pass through secondary
Recycling space so that play space and reduce further, it should be noted that in order to prevent the first reflecting mirror 101 and second
Reflecting mirror 301 causes and mutually blocks, and distance between the first reflecting mirror 101 and the second reflecting mirror 301 is it suffices that most basic
Required distance, the vertical dimension between the i.e. first reflecting mirror 101 and the second reflecting mirror 301 more than the distance preset, now first
Reflecting mirror 101 and the second reflecting mirror 301 are plane mirror, and are parallel to each other.
Concrete, ultrashort out-of-focus projection device provided herein, also include shell, projector 103, curtain 102 and the
One reflecting mirror 101 is respectively positioned on enclosure.Thermal window, and/or heat radiation patch can also be set on shell.
As seen in figs. 11a and 11b, the image quality of the image in order to go out shown by ensureing on curtain 102, it should first
The edge of reflecting mirror 101 arranges shading shell 1001 with the edge of curtain 102.In Figure 11, the first reflecting mirror 101 is arranged on the back of the body
On plate 1002, towards the side of enclosure, between backboard 1002 and curtain 102 (in other words the edge of the first reflecting mirror 101 with
The edge of described curtain 102 is closed by shading shell 1001).
Preferably, the first reflecting mirror 101 and the second reflecting mirror 301 are single-surface mirror.
Preferably, described first reflecting mirror 101 and described second reflecting mirror 301 are single-surface mirror；
The 10%-25% that area is curtain 102 area of described first reflecting mirror 101；
The 10%-15% that area is curtain 102 area of described second reflecting mirror 301.
The area of the first reflecting mirror 101 and the second reflecting mirror 301 could be arranged to different, due to the second reflecting mirror 301
Being the first reflection participated in, what the first reflecting mirror 101 participated in is second time reflection, and therefore, light is incident upon different reflecting mirror
On area differ, thus, it is possible to adjust accordingly area and the face of the second reflecting mirror 301 of the first reflecting mirror 101
Long-pending.
Wherein, the area ratio of the first reflecting mirror 101 and the second reflecting mirror 301 is preferably 2:1.
Below, with three concrete examples, ultrashort out-of-focus projection device provided herein is described.
Example 1: ultrashort out-of-focus projection device (top view) as shown in Figure 5, anti-including projector 103, curtain 102 and first
Penetrate mirror 101.User and the first reflecting mirror 101 lay respectively at the both sides of curtain 102, projector 103 be positioned at curtain 102 just under
Side.
Fig. 6 shows the concrete structure of the first bracing frame, including laying respectively at four baffle plates 201 of base 202 surrounding, often
Individual baffle plate 201 is all connected with base 202 by an expansion link 204.
Fig. 7 shows the concrete structure of the second bracing frame, including multiple clampers and be arranged on stepping up of clamper one end
Portion 601, and the pars contractilis 602 in the middle part of clamper.
First bracing frame and the second bracing frame are all connected with rack body (not shown).
Example 2: ultrashort out-of-focus projection device (top view) as shown in Figure 8, anti-including projector 103, curtain 102, first
Penetrate mirror 101 and the second reflecting mirror 301.User and the first reflecting mirror 101 lay respectively at the both sides of curtain 102, and projector 103 is positioned at
The underface of the first reflecting mirror 101.
Example 3: as it is shown in figure 9, give the instance graph that projector 103 is arranged on the first reflecting mirror 101 top, now,
First reflecting mirror 101 parallel with curtain 102 (or having less angle between the first reflecting mirror 101 and curtain 102), second
Reflecting mirror 301 is non-parallel with the first reflecting mirror 101, and the second reflecting mirror 301 is non-parallel with curtain 102.Second reflecting mirror 301
Being positioned at the bottom of the first reflecting mirror 101, projector 103 is positioned at the top of the first reflecting mirror 101.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art, in the technical scope that the invention discloses, can readily occur in change or replace, should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with scope of the claims.
Claims (9)
- The most ultrashort out-of-focus projection device, it is characterised in that including:Projector, curtain and the first reflecting mirror；Described first reflecting mirror is arranged on the rear-projection side of described curtain；The camera lens of described projector towards described first reflecting mirror, and, described camera lens the projection ray penetrated can be through described One reflecting mirror, reflexes on described curtain；Also include the second reflecting mirror；Described second reflecting mirror between described first reflecting mirror and described curtain, and described Two-mirror is positioned at the bottom of described first reflecting mirror；The projection ray penetrated by described camera lens can sequentially pass through described second reflecting mirror and described first reflecting mirror, reflexes to institute State on curtain；Described first reflecting mirror be arranged in parallel with described curtain.
- Ultrashort out-of-focus projection the most according to claim 1 device, it is characterised in that described first reflecting mirror is square planar Mirror, described first reflecting mirror can rotate along its top margin；Or, the plane at described first reflecting mirror place and the plane at described curtain place have angle.
- Ultrashort out-of-focus projection the most according to claim 1 device, it is characterised in that described projector is positioned at the upper of described curtain Portion or bottom.
- Ultrashort out-of-focus projection the most according to claim 1 device, it is characterised in that also include that fixed support, described fixing prop up Frame is fixing with described first reflecting mirror and described projector respectively to be connected.
- Ultrashort out-of-focus projection the most according to claim 4 device, it is characterised in that described fixed support includes rack body, And the first bracing frame of being connected with described rack body respectively and the second bracing frame, described first bracing frame and described projector Removably connecting, described second bracing frame removably connects with described first reflecting mirror.
- Ultrashort out-of-focus projection the most according to claim 5 device, it is characterised in that described first bracing frame includes flat Base, it is arranged on the baffle plate at described Base edge, and connects the expansion link of described base and described baffle plate；It is provided with universal joint on described expansion link；Described base is fixing with described rack body to be connected.
- Ultrashort out-of-focus projection the most according to claim 5 device, it is characterised in that described second bracing frame includes multiple clamping Device, one end of each described clamper is all fixing with described rack body to be connected, and the other end of each described clamper all with Described first reflecting mirror removably connects.
- Ultrashort out-of-focus projection the most according to claim 1 device, it is characterised in that also include shell, described first reflecting mirror The edge of edge and described curtain by shading shell seal.
- Ultrashort out-of-focus projection the most according to claim 1 device, it is characterised in that described first reflecting mirror and described second anti- Penetrate mirror and be single-surface mirror；The 10%-25% that area is curtain area of described first reflecting mirror；The 10%-15% that area is curtain area of described second reflecting mirror.
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| CN201510495920.XA CN104991412B (en) | 2015-08-13 | 2015-08-13 | Ultrashort out-of-focus projection device |
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| CN201510495920.XA CN104991412B (en) | 2015-08-13 | 2015-08-13 | Ultrashort out-of-focus projection device |
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| CN108594435A (en) * | 2018-05-30 | 2018-09-28 | 广东电网有限责任公司 | A kind of substation field secondary device peace based on HUD technologies arranges device |
| CN110967957A (en) * | 2018-09-28 | 2020-04-07 | 深圳Tcl新技术有限公司 | Holographic display device |
| CN110058482B (en) * | 2019-05-21 | 2024-03-08 | 成都极米科技股份有限公司 | Exhibition system and exhibition method |
| CN111965928B (en) * | 2020-09-04 | 2022-04-19 | 福州威泰思光电科技有限公司 | Foldable reflecting mirror frame |
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| CN201222159Y (en) * | 2008-06-17 | 2009-04-15 | 上海沪江虚拟制造技术有限公司 | Back casting apparatus |
| JP2015031932A (en) * | 2013-08-07 | 2015-02-16 | 裕之 本地川 | Projection direction switching device, and image projector |
| CN204832753U (en) * | 2015-08-13 | 2015-12-02 | 白衡 | Ultrashort burnt projection arrangement |
-
2015
- 2015-08-13 CN CN201510495920.XA patent/CN104991412B/en not_active Expired - Fee Related
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| CN104991412A (en) | 2015-10-21 |
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