CN208255619U - It is a kind of can auto-focusing holographic projector - Google Patents
It is a kind of can auto-focusing holographic projector Download PDFInfo
- Publication number
- CN208255619U CN208255619U CN201820994579.1U CN201820994579U CN208255619U CN 208255619 U CN208255619 U CN 208255619U CN 201820994579 U CN201820994579 U CN 201820994579U CN 208255619 U CN208255619 U CN 208255619U
- Authority
- CN
- China
- Prior art keywords
- projection
- film
- holographic
- unit
- focusing
- Prior art date
- 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.)
- Active
Links
- 238000003384 imaging method Methods 0.000 claims abstract description 22
- 238000002834 transmittance Methods 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims description 16
- 239000012528 membrane Substances 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 9
- 238000001093 holography Methods 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009738 saturating Methods 0.000 description 3
- 208000030984 MIRAGE syndrome Diseases 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000003471 mutagenic agent Substances 0.000 description 2
- 231100000707 mutagenic chemical Toxicity 0.000 description 2
- TVLSRXXIMLFWEO-UHFFFAOYSA-N prochloraz Chemical compound C1=CN=CN1C(=O)N(CCC)CCOC1=C(Cl)C=C(Cl)C=C1Cl TVLSRXXIMLFWEO-UHFFFAOYSA-N 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
The utility model relates to projection display technique field, disclose it is a kind of can auto-focusing holographic projector, comprising: projection display unit；Holographic semi-transparent semi-reflecting film, for receiving projection image's light beam from the projection display unit；Electrochromic cells, comprising: electrochromic film and current control module, the current control module for changing the electrochromic film light transmittance；Image acquisition units, the projected image formed for acquiring projection image's light beam；Central processing unit, for controlling the working condition of described image acquisition unit and electrochromic cells, and for obtaining focusing data；Focusing driving unit, for adjusting the focal length of the projection lens of the projection display unit so that the projection display unit blur-free imaging according to the focusing data.By the above-mentioned means, the utility model is able to solve the technical issues of current holographic projector cannot achieve the auto-focusing based on Image Acquisition, accurate auto-focusing is realized.
Description
Technical field
The utility model embodiment is related to projection display technique field, more particularly to it is a kind of can auto-focusing holography
Projection arrangement.
Background technique
Line holographic projections technology (front-projected holographic display), also known as virtual image technology are
One is the technologies using interference and diffraction principle record and the true 3-D image of reconstructed object.Line holographic projections project image
It onto line holographic projections film, watches from the outside, it can be seen that the either statically or dynamically image of 3 D stereo not only can produce solid
Aerial mirage phantom can also be such that mirage phantom generates with performing artist and interact, complete performance together, generate shocking performing effect.Battalion
Also unreal also genuine atmosphere, the peculiar visual effect that there are strong depth feelings, debate with true and false difficulty of effect are made.It is intermediate combinable
Material object realizes the combination of image and material object；It can also realize with addition of touch screen and be interacted with spectators；It can be according to requiring to be made into four sides
Window.The exhibition of scope of application product, automobile garment news conference, stage program, interaction, bar amusement, place interaction etc..
The distance of projection lens to line holographic projections film is fixed in conventional holographic projection arrangement, as long as bringing into focus when leaving the factory
It is subsequent that clear projection can be realized.But holographic projector as the temperature rises or vibrates in use, is easy
The consequence for causing defocus needs real-time perfoming automatic focusing to can be only achieved better user experience.But since line holographic projections exist
When work, the combination of projection image and material object, camera can not be completely separable by real world object and virtual image when acquiring picture,
It is difficult to realize the auto-focusing analyzed based on Image Acquisition.
Based on the above issues, the utility model proposes it is a kind of can auto-focusing holographic projector, solve current complete
The technical issues of breath projection arrangement cannot achieve the auto-focusing based on Image Acquisition, realizes accurate auto-focusing.
Utility model content
In order to solve the above-mentioned technical problem, the utility model embodiment provide it is a kind of can auto-focusing line holographic projections dress
It sets, solves the technical issues of current holographic projector cannot achieve the auto-focusing based on Image Acquisition, realize precisely certainly
Dynamic focusing.
The utility model embodiment the following technical schemes are provided:
It is a kind of can auto-focusing holographic projector, comprising:
Projection display unit, for projecting projection image's light beam；
Holographic semi-transparent semi-reflecting film, for receiving projection image's light beam from the projection display unit；
Electrochromic cells are set between the projection display unit and the holographic semi-transparent semi-reflecting film, comprising: electroluminescent
Color-changing membrane and current control module, the current control module connect the electrochromic film, for controlling by described electroluminescent
The electric current of color-changing membrane, thus change the light transmittance of the electrochromic film, it is described when defocus occurs in the holographic projector
Electrochromic film light transmittance is low, and projection image's light beam is direct imaging at the electrochromic film；
Image acquisition units image in the projection formed on the electrochromic film for acquiring projection image's light beam
Image；
Central processing unit connects the projection display unit, electrochromic cells and image acquisition units, for controlling
The working condition of described image acquisition unit and electrochromic cells processed, and it is used for analytical calculation described image acquisition unit institute
The projected image of acquisition, and obtain focusing data；
It focuses driving unit, the projection display unit and the central processing unit is connected, for according in described
Focusing data provided by Central Processing Unit adjust the focal length of the projection lens of the projection display unit so that the projection is aobvious
Show unit blur-free imaging.
In some embodiments, the electrochromic film is set to the projection display unit and the holography is semi-transparent semi-reflecting
Between film, the projection display unit and image acquisition units are set to the side far from the holographic semi-transparent semi-reflecting film, normally
Projection image's light beam images in the holographic semi-transparent semi-reflecting film through the electrochromic film when projection.
In some embodiments, the electrochromic film is bonded setting with the holographic semi-transparent semi-reflecting film.
In some embodiments, the holographic projector further include: reflecting mirror, the reflecting mirror and the electrochromism
One surface of film is bonded setting, for reflecting projection image's light beam to the holographic semi-transparent semi-reflecting film.
In some embodiments, the projection display unit and described image acquisition unit are disposed in proximity to described holographic half
The side of saturating half anti-film, when normal projection, projection image's light beam penetrated the electrochromic film, using the reflecting mirror
The holographic semi-transparent semi-reflecting film is imaged in through the electrochromic film after reflection.
In some embodiments, the projection display unit is DLP projective module group or LCOS projective module group, and the focusing is driven
Moving cell includes drive motor, and described image acquisition unit includes camera.
In some embodiments, the holographic projector further include:
Temperature sensing unit connects the central processing unit, for detecting the projector space of the holographic projector
Temperature, and the central processing unit is sent by temperature data, so that the central processing unit is according to the temperature number
It is compared and analyzed according to preset temperature threshold, it is determined whether need to trigger auto-focusing, and then control the electrochromism list
The working condition of member and image acquisition units.
In some embodiments, the range of the preset temperature threshold is 40 DEG C -60 DEG C.
In some embodiments, the electrochromic film includes hard substrates, and the hard substrates include: transparent glass lining
Bottom and transparent plastic substrate.
In some embodiments, the holographic projector further include:
Timer connects the central processing unit, for calculating the stream time of the holographic projector, if
The stream time of the holographic projector is more than preset time threshold, then electroluminescent described in the central processing unit controls
The current control module of color-changing unit reduces the current value for passing through the electrochromic film, to reduce the electrochromic film
Transparency makes projection image's light beam be direct imaging at the electrochromic film, while the central processing unit triggers institute
Image acquisition units are stated to be switched to operating status from standby mode and acquire the projected image on the electrochromic film, it is described in
The projected image that Central Processing Unit is acquired according to described image acquisition unit controls the focusing driving unit and adjusts the projection
The projection lens of display unit carries out auto-focusing.
The beneficial effect of the utility model embodiment is: being in contrast to the prior art, the utility model embodiment party
Formula provide it is a kind of can auto-focusing holographic projector, comprising: projection display unit, for projecting projection image's light beam；Entirely
Semi-transparent semi-reflecting film is ceased, for receiving projection image's light beam from the projection display unit；Electrochromic cells are set to institute
It states between projection display unit and the holographic semi-transparent semi-reflecting film, comprising: electrochromic film and current control module, the electric current
Control module connects the electrochromic film, for controlling the electric current by the electrochromic film, to change described electroluminescent
The light transmittance of color-changing membrane；Image acquisition units, the projected image formed for acquiring projection image's light beam；Central processing list
Member connects the projection display unit, electrochromic cells and image acquisition units, for controlling described image acquisition unit
It obtains with the working condition of electrochromic cells and for projected image acquired in analytical calculation described image acquisition unit
Take focusing data；Focusing driving unit, connects the projection display unit and the central processing unit, for according to
Focusing data, adjust the focal length of the projection lens of the projection display unit so that the projection provided by central processing unit
Display unit blur-free imaging.By the above-mentioned means, the utility model embodiment be able to solve current holographic projector without
Method realizes the technical issues of auto-focusing based on Image Acquisition, realizes accurate auto-focusing.
Detailed description of the invention
One or more embodiments are illustrated by corresponding attached drawing, these exemplary illustrations not structure
The restriction of pairs of embodiment, the element with same reference numbers label is expressed as similar element in attached drawing, unless there are special
It declares, composition does not limit the figure in attached drawing.
Fig. 1 be one kind provided by the embodiment of the utility model can auto-focusing holographic projector module diagram；
Fig. 2 is the structural schematic diagram of the electrochromic cells in Fig. 1；
Fig. 3 be the utility model embodiment 1 provide it is a kind of can the structural profile of holographic projector of auto-focusing show
It is intended to；
Fig. 4 be the utility model embodiment 2 provide it is a kind of can the structural profile of holographic projector of auto-focusing show
It is intended to.
Referring to Fig. 1 to Fig. 4,10, can auto-focusing holographic projector；11, projection display unit；12, holographic semi-transparent
Half anti-film；13, electrochromic cells；131, electrochromic film；132, current control module；14, image acquisition units；15, anti-
Penetrate mirror；16, focusing driving unit；17, temperature sensing unit；18, timer；19, central processing unit.
Specific embodiment
For the ease of understanding the utility model, with reference to the accompanying drawings and detailed description, the utility model is carried out more
Detailed description.It should be noted that it can be directly in another element when element is expressed " being fixed on " another element
Upper or placed in the middle there may be one or more therebetween elements.When an element is expressed " connection " another element, it can
To be directly to another element or elements placed in the middle there may be one or more therebetween.This specification is used
Term "vertical", "horizontal", "left" and "right" and similar statement for illustrative purposes only.
Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model
The normally understood meaning of the technical staff in art field is identical.Art used in the description of the utility model in this specification
Language is only for the purpose of describing specific embodiments, and is not intended to limitation the utility model.Art used in this specification
Language "and/or" includes any and all combinations of one or more related listed items.
The utility model assists auto-focusing using electrochromic material, and the material with electrochromic property is referred to as
Electrochromic material.The electrochromism (eletrochromism, abbreviation EC) refers to that the optical properties of certain materials are (including anti-
Penetrate rate, transmitance, absorptivity etc.) under the action of extra electric field there is a phenomenon where stablizing, reversible change, on appearance property
Show as the reversible change of color and transparency.
Embodiment 1
Referring to Fig. 1, Fig. 1 be one kind provided by the embodiment of the utility model can auto-focusing holographic projector mould
Block schematic diagram；
As shown in Figure 1, this can the holographic projector 10 of auto-focusing include: projection display unit 11, holographic semi-transparent half
Anti- film 12, electrochromic cells 13, image acquisition units 14, reflecting mirror 15, focusing driving unit 16, temperature sensing unit 17,
Timer 18 and central processing unit 19.Wherein, the central processing unit 19 be separately connected the projection display unit 11,
Holographic semi-transparent semi-reflecting film 12, electrochromic cells 13, image acquisition units 14, reflecting mirror 15, focusing driving unit 16, temperature pass
Feel unit 17 and timer 18.
Specifically, the projection display unit 11 is DLP projective module group or LCOS projective module group, the projection display unit
11 for projecting projection image's light beam.Preferably, the projection display unit 11 is ultrashort out-of-focus projection's mould group, using ultrashort burnt throwing
It is small that shadow mould group advantageously accounts for projector space in conventional holographic projection arrangement, the shorter problem of projector distance.
Specifically, the holography semi-transparent semi-reflecting film 12, or holographic semi-transparent semi-reflecting screen, the holography semi-transparent semi-reflecting film
12 for receiving projection image's light beam from the projection display unit 11.The holography semi-transparent semi-reflecting film 12 can will be described
Projection image's light beam is imaged, and stereoscopic effect is generated.
Specifically, the electrochromic cells 13, are set to the projection display unit 11 and the holography are semi-transparent semi-reflecting
Between film 12, projection image's light beam of the projection display unit 11 can reach described complete by the electrochromic cells 13
Semi-transparent semi-reflecting film 12 is ceased, alternatively, projection image's light beam of the projection display unit 11 can be direct imaging at the electroluminescent change
Color element 13.
It is the structural schematic diagram of the electrochromic cells in Fig. 1 referring again to Fig. 2, Fig. 2；
As shown in Fig. 2, the electrochromic cells 13 include: electrochromic film 131 and current control module 132.Wherein, institute
It states electrochromic film 131 and connects the current control module 132.
Specifically, the electrochromic film 131, be set to it is described can auto-focusing holographic projector 10 projection it is aobvious
Show between unit 11 and holographic semi-transparent semi-reflecting film 12, the light transmittance of the electrochromic film 131 can change, so that control comes from
Whether projection image's light beam of the projection display unit 11 penetrates the electrochromic film 131 and projects the holography semi-transparent half
Anti- film 12.Wherein, the electrochromic film includes hard substrates, and the hard substrates are attached to the electrochromic film, described
Hard substrates include: transparent glass substrate and transparent plastic substrate.It is understood that the electrochromic film can be using saturating
Bright glass substrate or transparent plastic substrate, alternatively, the electrochromic film can use transparent glass substrate and transparent modeling simultaneously
Expect substrate.
Specifically, the current control module 132, connects the electrochromic film 131, the current control module 132
For controlling the electric current by the electrochromic film 131, since the light transmittance of the electrochromic film 131 is with added electric current
Change and change, therefore the light transmittance of the electrochromic film 131 can be controlled by the current control module 132.It is described
Current control module 132 connects the central processing unit 19, and the current control module 132 can receive the central processing
The control command that unit 19 is sent controls the electric current of the electrochromic film 131 according to the control command, and then controls institute
State the light transmittance of electrochromic film 131.Wherein, the current control module 132 can control the electricity of the electrochromic film 131
Stream mode, the current status include energized state, off-position, and the current control module 132 can also control the electricity
Cause the size of current of color-changing membrane 131 in the energized state.Specifically, the current control module 132 can be current control electricity
Road, the current control circuit include the devices such as current sensor, capacitor, resistance.
Specifically, described image acquisition unit 14, images in the electrochromism for acquiring projection image's light beam
The projected image formed on film, alternatively, described image acquisition unit 14 is used to completely acquire what projection image's light beam was formed
Projected picture.Wherein, described image acquisition unit 14 includes camera.
Specifically, the reflecting mirror 15 is plane mirror or concave mirror.
Specifically, the focusing driving unit 16, connects the projection display unit 11 and the central processing unit
19.It is aobvious to adjust the projection for data of focusing according to provided by the central processing unit for the focusing driving unit 16
Show the focal length of the projection lens of unit 11 so that the projection display unit blur-free imaging.Wherein, the focusing driving unit 16
Including drive motor, the drive motor is for driving the projection lens to carry out auto-focusing.
Specifically, the temperature sensing unit 17, connects the central processing unit 19, for detecting the line holographic projections
The temperature of the projector space of device 10, and the central processing unit 19 is sent by temperature data, so that the central processing
Unit 19 is compared and analyzed according to the temperature data with preset temperature threshold, it is determined whether it needs to trigger auto-focusing, into
And control the working condition of the electrochromic cells 13 and image acquisition units 14.Wherein, the model of the preset temperature threshold
Enclose is 40 DEG C -60 DEG C.When temperature detected is more than preset temperature threshold, the central processing unit 19 controls described electroluminescent
Current control module 132 in color-changing unit 13 reduces the current value for passing through the electrochromic film 131, to reduce the electricity
The transparency for causing color-changing membrane 131 makes projection image's light beam be direct imaging at the electrochromic film 131, at the same it is described in
Central Processing Unit 19 triggers described image acquisition unit 14 and is switched to operating status from standby mode and acquires the electrochromism
Projected image on film 131, the projected image that the central processing unit 19 is acquired according to described image acquisition unit 14, control
The projection lens that the focusing driving unit 16 adjusts the projection display unit 11 carries out auto-focusing.Wherein, the temperature
Sensing unit 17 is temperature sensor.
Specifically, the timer 18, connects the central processing unit 19, for calculating the holographic projector 10
Stream time, if the stream time of the holographic projector 10 be more than preset time threshold, the center
The current control module 132 that processing unit 19 controls the electrochromic cells 13 reduces through the electrochromic film 131
Current value is direct imaging at projection image's light beam described electroluminescent to reduce the transparency of the electrochromic film 131
Color-changing membrane 131, while the central processing unit 19 triggers described image acquisition unit 14 and is switched to operation shape from standby mode
State simultaneously acquires the projected image on the electrochromic film 131, and the central processing unit 19 is according to described image acquisition unit
The projected image of 14 acquisitions controls the projection lens that the focusing driving unit 16 adjusts the projection display unit 11 and carries out certainly
Dynamic focusing.
Specifically, the central processing unit 19, connects the projection display unit 11, electrochromic cells 13 and figure
As acquisition unit 14.The central processing unit 19 is for controlling described image acquisition unit 14 and the electrochromic cells 13
Working condition, and for projected image acquired in analytical calculation described image acquisition unit 14, and obtain focusing data,
The focusing driving unit 16 is sent by the focusing data, so that the focusing driving unit 16 is according to the focusing data
The focal length of the projection lens of the projection display unit 11 is adjusted so that 11 blur-free imaging of the projection display unit.Wherein, institute
Stating central processing unit 19 is central processing unit.
Referring again to Fig. 3, Fig. 3 be the utility model embodiment 1 provide it is a kind of can auto-focusing holographic projector
Structural profile illustration；
As shown in figure 3, the electrochromic film 131 of the electrochromic cells is set to the projection display unit 11 and institute
It states between holographic semi-transparent semi-reflecting film 12, the projection display unit 11 is set to image acquisition units 14 far from described holographic half
The side of saturating half anti-film 12, the projection display unit 11 are disposed adjacent with image acquisition units 14, the throwing of when normal projection
Shadow image strip images in the holographic semi-transparent semi-reflecting film 12 through the electrochromic film 131 of the electrochromic cells.
Specifically, the normal projection refers to that defocus phenomenon does not occur for the holographic projector 10, the electricity at this time
The light transmittance of the electrochromic film 131 of mutagens color element is high, the projection shadow that the projective module group of the projection display unit 11 generates
Enter the holographic semi-transparent semi-reflecting film 12, the perspective view of projection image's light beam as light beam can pass through the electrochromic film
As imaging in the holographic semi-transparent semi-reflecting film 12.
Specifically, if defocus phenomenon, the current control module of the electrochromic cells occur for the holographic projector
Will be to 131 extra electric field of electrochromic film, and then change the light transmittance of the electrochromic film 131, the projection image
Light beam will be unable to through the electrochromic film 131, and projection image's light beam will be direct imaging at the electrochromic film
131, while described image acquisition unit 14 acquires projection image's light beam and images in and formed on the electrochromic film 131
Projected image, the projected image that the central processing unit 19 will be obtained according to described image acquisition unit 14 obtain focusing number
According to, and the focal length that focusing driving unit adjusts the projection lens of the projection display unit 11 is controlled, so that the Projection Display
Unit blur-free imaging.
In some embodiments, the electrochromic film 12 is bonded setting with the holographic semi-transparent semi-reflecting film 13.
In the utility model embodiment, by provide it is a kind of can auto-focusing holographic projector, comprising: projection is aobvious
Show unit, for projecting projection image's light beam；Holographic semi-transparent semi-reflecting film, for receiving the projection from the projection display unit
Image strip；Electrochromic cells are set between the projection display unit and the holographic semi-transparent semi-reflecting film, comprising: electricity
Color-changing membrane and current control module are caused, the current control module connects the electrochromic film, passes through the electricity for controlling
The electric current of color-changing membrane is caused, thus change the light transmittance of the electrochromic film, when there is defocus in the holographic projector, institute
It is low to state electrochromic film light transmittance, projection image's light beam is direct imaging at the electrochromic film；Image acquisition units are used
The projected image formed on the electrochromic film is imaged in acquiring projection image's light beam；Central processing unit, connection
The projection display unit, electrochromic cells and image acquisition units, for controlling described image acquisition unit and electroluminescent
The working condition of color-changing unit, and for projected image acquired in analytical calculation described image acquisition unit, and obtain tune
Burnt data；Focusing driving unit, connects the projection display unit and the central processing unit, for according to the center
Focusing data, adjust the focal length of the projection lens of the projection display unit so that the Projection Display provided by processing unit
Unit blur-free imaging.It cannot achieve by the above-mentioned means, the utility model embodiment is able to solve current holographic projector
The technical issues of auto-focusing based on Image Acquisition, realize accurate auto-focusing.
Embodiment 2
The utility model embodiment part identical with the content in the above embodiments 1, does not illustrate one by one herein.This reality
It is with new embodiment difference from Example 1:
Referring to Fig. 4, Fig. 4 be the utility model embodiment 2 provide it is a kind of can auto-focusing holographic projector
Structural profile illustration；
As shown in figure 4, the holographic projector 10 further include: reflecting mirror 15, the reflecting mirror 15 and the electroluminescent change
One surface of color film 131 is bonded setting, for reflecting projection image's light beam to the holographic semi-transparent semi-reflecting film 12.
Wherein, the projection display unit 11 and described image acquisition unit 14 are disposed adjacent, the reflecting mirror 15 and institute
The surface fitting setting of electrochromic film 131 is stated, the projection display unit 11 is set to described image acquisition unit 14
Close to the side of the holographic semi-transparent semi-reflecting film 12, when normal projection, projection image's light beam penetrated the electrochromic film
131, the holographic semi-transparent semi-reflecting film 12 is imaged in through the electrochromic film 131 using after the reflecting mirror 15 reflection.
Specifically, the normal projection refers to that defocus phenomenon does not occur for the holographic projector 10, the electricity at this time
The light transmittance of the electrochromic film 131 of mutagens color element is high, the projection shadow that the projective module group of the projection display unit 11 generates
Enter the reflecting mirror 15 as light beam can pass through the electrochromic film 131, then by the reflecting mirror 15 by the projection shadow
As light beam is reflected into the holographic semi-transparent semi-reflecting film 12, it is semi-transparent that the projected image of projection image's light beam images in the holography
Half anti-film 12.
Wherein, if defocus phenomenon, the current control module of the electrochromic cells occur for the holographic projector 10
Will be to 131 extra electric field of electrochromic film, and then change the light transmittance of the electrochromic film 131, the projection image
Light beam will be unable to through the electrochromic film 131, and projection image's light beam will be direct imaging at the electrochromic film
131, while described image acquisition unit 14 acquires projection image's light beam and images in and formed on the electrochromic film 131
Projected image, the projected image that the central processing unit 19 will be obtained according to described image acquisition unit 14 obtain focusing number
According to, and the focal length that focusing driving unit adjusts the projection lens of the projection display unit 11 is controlled, so that the Projection Display
Unit blur-free imaging.It is described electroluminescent since the reflecting mirror 15 is bonded setting with a surface of the electrochromic film 131
The imaging effect of color-changing membrane 131 is good, facilitates auto-focusing.
In the utility model embodiment, by provide it is a kind of can auto-focusing holographic projector, comprising: projection is aobvious
Show unit；Holographic semi-transparent semi-reflecting film, for receiving projection image's light beam from the projection display unit；Electrochromism list
Member, comprising: electrochromic film and current control module, the current control module for changing the electrochromic film light transmission
Rate；Image acquisition units, the projected image formed for acquiring projection image's light beam；Central processing unit, for controlling
The working condition of described image acquisition unit and electrochromic cells, and for obtaining focusing data；Focusing driving unit, is used
According to the focusing data, adjusting the focal length of the projection lens of the projection display unit so that the projection display unit is clear
Clear imaging.It cannot achieve by the above-mentioned means, the utility model is able to solve current holographic projector based on Image Acquisition
Auto-focusing the technical issues of, realize accurate auto-focusing.
It should be noted that giving the preferable implementation of the utility model in the specification and its attached drawing of the utility model
Mode, still, the utility model can be realized by many different forms, however it is not limited to which this specification is described to be implemented
Mode, these embodiments are not as the additional limitation to the content of the present invention, the purpose of providing these embodiments is that making
It is more thorough and comprehensive to the understanding of the disclosure of the utility model.Also, above-mentioned each technical characteristic continues to be combined with each other, and is formed
The various embodiments not being enumerated above are accordingly to be regarded as the range of the utility model specification record；Further, to this field
For those of ordinary skill, it can be modified or changed according to the above description, and all these modifications and variations all should belong to
The protection scope of the appended claims for the utility model.
Claims (10)
1. one kind can auto-focusing holographic projector characterized by comprising
Projection display unit, for projecting projection image's light beam；
Holographic semi-transparent semi-reflecting film, for receiving projection image's light beam from the projection display unit；
Electrochromic cells are set between the projection display unit and the holographic semi-transparent semi-reflecting film, comprising: electrochromism
Film and current control module, the current control module connect the electrochromic film, pass through the electrochromism for controlling
The electric current of film, thus change the light transmittance of the electrochromic film, it is described electroluminescent when defocus occurs in the holographic projector
Color-changing membrane light transmittance is low, and projection image's light beam is direct imaging at the electrochromic film；
Image acquisition units image in the perspective view formed on the electrochromic film for acquiring projection image's light beam
Picture；
Central processing unit connects the projection display unit, electrochromic cells and image acquisition units, for controlling
The working condition of image acquisition units and electrochromic cells is stated, and for acquired in analytical calculation described image acquisition unit
Projected image, and obtain focusing data；
Focusing driving unit, connects the projection display unit and the central processing unit, for according to the centre
Data of focusing provided by unit are managed, adjust the focal length of the projection lens of the projection display unit so that the Projection Display list
First blur-free imaging.
2. holographic projector according to claim 1, which is characterized in that the electrochromic film is set to the projection
Between display unit and the holographic semi-transparent semi-reflecting film, the projection display unit and image acquisition units are set to far from described
The side of holographic semi-transparent semi-reflecting film, when normal projection projection image's light beam imaged in through the electrochromic film it is described complete
Cease semi-transparent semi-reflecting film.
3. holographic projector according to claim 2, which is characterized in that the electrochromic film and the holography are semi-transparent
Half anti-film fitting setting.
4. holographic projector according to claim 1, which is characterized in that the holographic projector further include: reflection
Mirror, the reflecting mirror are bonded setting with a surface of the electrochromic film, for reflecting projection image's light beam described in
Holographic semi-transparent semi-reflecting film.
5. holographic projector according to claim 4, which is characterized in that the projection display unit is adopted with described image
Collection unit is disposed in proximity to the side of the holographic semi-transparent semi-reflecting film, and when normal projection, projection image's light beam penetrated the electricity
Color-changing membrane is caused, images in the holographic semi-transparent semi-reflecting film through the electrochromic film using after reflecting mirror reflection.
6. holographic projector according to claim 1-5, which is characterized in that the projection display unit is
DLP projective module group or LCOS projective module group, the focusing driving unit include drive motor, and described image acquisition unit includes taking the photograph
As head.
7. holographic projector according to claim 1-5, which is characterized in that the holographic projector also wraps
It includes:
Temperature sensing unit connects the central processing unit, the temperature of the projector space for detecting the holographic projector
Degree, and sends the central processing unit for temperature data so that the central processing unit according to the temperature data with
Preset temperature threshold compares and analyzes, it is determined whether need to trigger auto-focusing, and then control the electrochromic cells and
The working condition of image acquisition units.
8. holographic projector according to claim 7, which is characterized in that the range of the preset temperature threshold is 40
℃-60℃。
9. holographic projector according to claim 1-5, which is characterized in that the electrochromic film includes hard
Matter substrate, the hard substrates include: transparent glass substrate and transparent plastic substrate.
10. holographic projector according to claim 1-5, which is characterized in that the holographic projector is also
Include:
Timer connects the central processing unit, for calculating the stream time of the holographic projector, if described
The stream time of holographic projector is more than preset time threshold, then electrochromism described in the central processing unit controls
The current control module of unit reduces the current value for passing through the electrochromic film, to reduce the transparent of the electrochromic film
Degree makes projection image's light beam be direct imaging at the electrochromic film, while the central processing unit triggers the figure
As acquisition unit is switched to operating status from standby mode and acquires the projected image on the electrochromic film, the centre
The projected image that reason unit is acquired according to described image acquisition unit controls the focusing driving unit and adjusts the Projection Display
The projection lens of unit carries out auto-focusing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820994579.1U CN208255619U (en) | 2018-06-26 | 2018-06-26 | It is a kind of can auto-focusing holographic projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820994579.1U CN208255619U (en) | 2018-06-26 | 2018-06-26 | It is a kind of can auto-focusing holographic projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208255619U true CN208255619U (en) | 2018-12-18 |
Family
ID=64653253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820994579.1U Active CN208255619U (en) | 2018-06-26 | 2018-06-26 | It is a kind of can auto-focusing holographic projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208255619U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111739447A (en) * | 2020-06-12 | 2020-10-02 | 湖州青米传媒科技有限公司 | Advertising device based on 3D holographic projection technology and working method |
| CN113391503A (en) * | 2020-03-11 | 2021-09-14 | 苏州佳世达光电有限公司 | Projector and projection method |
| CN114070967A (en) * | 2020-08-06 | 2022-02-18 | 深圳市万普拉斯科技有限公司 | Lens module and phase focusing method thereof |
-
2018
- 2018-06-26 CN CN201820994579.1U patent/CN208255619U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113391503A (en) * | 2020-03-11 | 2021-09-14 | 苏州佳世达光电有限公司 | Projector and projection method |
| CN111739447A (en) * | 2020-06-12 | 2020-10-02 | 湖州青米传媒科技有限公司 | Advertising device based on 3D holographic projection technology and working method |
| CN114070967A (en) * | 2020-08-06 | 2022-02-18 | 深圳市万普拉斯科技有限公司 | Lens module and phase focusing method thereof |
| CN114070967B (en) * | 2020-08-06 | 2024-02-02 | 深圳市万普拉斯科技有限公司 | Lens module and phase focusing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208255619U (en) | It is a kind of can auto-focusing holographic projector | |
| TWI557491B (en) | Combined visible and non-visible projection system | |
| CN110376743B (en) | Multi-focus display system and method | |
| US7144113B2 (en) | Virtual image display apparatus | |
| CN110471249B (en) | In-situ holographic display system | |
| CN102511013A (en) | Imaging device, method for controlling same, and program | |
| US10371998B2 (en) | Display apparatus and method of displaying using polarizers and optical combiners | |
| CN101738742A (en) | Continuous adjustable pulfrich filter spectacles for optimized 3deeps stereoscopic viewing and its control method and means | |
| CN106444042A (en) | Dual-purpose display equipment for augmented reality and virtual reality, and wearable equipment | |
| KR101622698B1 (en) | Light path shift module, and video camera adapter for shooting 3D video with the same | |
| CN105684439A (en) | Three-dimensional image display system, method and device | |
| CN107529052A (en) | One kind auxiliary filming apparatus and stereoscopic shooting method | |
| CN110879469A (en) | Head-mounted display equipment | |
| JP6173272B2 (en) | Augmented reality display device and augmented reality display device | |
| CN108919492A (en) | A kind of nearly eye display device, system and display methods | |
| CN111338175A (en) | Transmission type geometric holographic display system | |
| WO2019180542A1 (en) | Near-eye display apparatus and method of displaying three-dimensional images | |
| US11039117B2 (en) | Dual lens imaging module and capturing method thereof | |
| Tsuchiya et al. | An optical design for avatar-user co-axial viewpoint telepresence | |
| CN206431315U (en) | A kind of array of photoswitch and bore hole 3D systems can be interacted | |
| JP2000056412A (en) | Attachment for photographing stereoscopic picture | |
| WO2017147801A1 (en) | System for adjusting depth of field of multi-depth display and method thereof | |
| US8912483B2 (en) | Display measuring device | |
| WO2014171644A1 (en) | Augmented reality system using mirror | |
| JPH01259348A (en) | Three-dimensional image display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20231226 Granted publication date: 20181218 |