CN107167991A - A kind of holographic projector for reproducing article 3-dimensional image - Google Patents
A kind of holographic projector for reproducing article 3-dimensional image Download PDFInfo
- Publication number
- CN107167991A CN107167991A CN201710574450.5A CN201710574450A CN107167991A CN 107167991 A CN107167991 A CN 107167991A CN 201710574450 A CN201710574450 A CN 201710574450A CN 107167991 A CN107167991 A CN 107167991A
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- China
- Prior art keywords
- mirror
- projection
- optically focused
- concave mirror
- projection screen
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/10—Projectors with built-in or built-on screen
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
Abstract
The invention discloses a kind of holographic projector for reproducing article 3-dimensional image, including projection source, concave mirror and optically focused projection screen, the projection source is arranged on the reflecting surface bottom of the concave mirror, the projection ray of the projection source reaches the optically focused projection screen, and hologram is formed on the optically focused projection screen.By the three-dimensional light of the reflective surface projection source of concave mirror, the optically focused imaging effect of optically focused projection screen is recycled, the hologram of projection source can be observed on optically focused projection screen；The present invention is simple in construction, with low cost, facilitates civilian popularization and uses；Perpendicular to optically focused projection screen horizontal 360-degree, vertical certain angle can observe hologram；Without material object between user and line holographic projections image, user can directly touch hologram；There can be multiple combinations, a variety of projection schemes are optional.
Description
Technical field
The present invention relates to line holographic projections technical field, and in particular to a kind of holographic projector of reproduction article 3-dimensional image.
Background technology
It is that simultaneously reconstructed object is real using interference and diffraction principle record that line holographic projections technology, which is also referred to as virtual image technology,
The technology of 3-D view.Line holographic projections technology can not only produce the aerial mirage of solid, and mirage can also be made to be produced with performing artist
It is raw interactive.The exhibition of scope of application product, program interaction, home entertaining, study education etc..
Existing line holographic projections technology includes following several：
(1) air projection and interaction technique：The image of interactive function is provided in projection on the wall of air-flow formation.This technology
Image is incident upon into vapor to liquefy on the droplet to be formed, level and third dimension very strong image can be formed.
(2) the 3D images of laser beam projects entity：This technology is mixing when utilizing nitrogen and oxygen dispersion in the aie
Into gas become scorching hot slurry like material, and form an of short duration 3D rendering in atmosphere.This method is mainly constantly
Small-sized explosion is carried out in atmosphere to realize.
(3) 360 degree of holographic display screens：This technology be by image projection on the mirror that a kind of high speed rotates so as to realizing
3-D view.
(4) holographic pyramid：This technology is that the four sides cone being made of clear material is constituted, and the sight of spectators can be from appointing
What simultaneously penetrates it, and by surface principle of reflection, spectators can see the image and figure of free floating in cone space.
(5) transparent flat holographic technique：This technology is mainly shown by line holographic projections film, holographic scrim, transparent liquid crystal
Device, transparent OLED display are realized.Image mainly is shown in plane projection equipment, while clear imaging is kept, energy
Allow spectators to pass through and see behind scenery.
(6) rotating LED screen：This technology drives several LED by high speed rotation, by singlechip chip with nanosecond
Speed control LED high speed light on and off, using the persistence of vision principle of human eye, form various patterns in the air.
(7) hallucinatory image instrument：The technology is using the consistent concave mirror of two curvature up and down, and concave mirror bottom is opened wherein
Realized on mouth and reproduce article 3-dimensional image.
Holographic projector based on above-mentioned line holographic projections technology, although original objects true three-dimension image can be reproduced, still
Cost is very expensive；Some line holographic projections technologies have certain danger；Commercial at present and civilian line holographic projections equipment, mostly
Hologram image can not be touched.Hallucinatory image instrument can only be imaged at concave mirror bottom opening, and can not realize that hologram is amplified, it is impossible to
Realize positive throwing, the projecting apparatus characteristic of rear-projection.
The content of the invention
It is existing complete to solve it is an object of the invention to provide a kind of holographic projector for reproducing article 3-dimensional image
When ceasing projecting apparatus reproduction article 3-dimensional image, technology that is costly, touching limitation with certain danger, hologram is asked
Topic.
To achieve the above object, specifically, the invention provides following technical scheme：
A kind of holographic projector for reproducing article 3-dimensional image, including projection source, concave mirror and optically focused projection screen, it is described
Projection source is arranged on the reflecting surface bottom of the concave mirror, and the projection ray of the projection source reaches the optically focused projection screen,
Hologram is formed on the optically focused projection screen.
A kind of holographic projector for reproducing article 3-dimensional image, including projection source, concave mirror and half-reflecting half mirror, it is described recessed
Face mirror bottom has opening, and the projection source is arranged on the reflecting surface bottom of the concave mirror, and the half-reflecting half mirror is arranged on
The front of the concave mirror, the concave mirror and the half-reflecting half mirror combine to form optically focused projection screen, are thrown in the optically focused
The hologram of the projection source is formed on shadow screen.
Optionally, the concave mirror is combined with half-reflecting half mirror, and projection source is placed in concave mirror face bottom, this
When this composite screen be used as optically focused projection screen, again as projection source container, formed the present invention simplest building form.
Optionally, when the concave mirror combines to form optically focused projection screen with half-reflecting half mirror, the half-reflecting half mirror
Reflecting surface is located at the position of the concave surface mirror foci 1/2, the reflection of the reflecting surface of the half-reflecting half mirror towards the concave mirror
Face, the plane of the concave mirror focus direction opening is overlapped with the reflecting surface of the half-reflecting half mirror.
Further, the optically focused projection screen is light-gathering concave-surface mirror, Fresnel Lenses or with Fresnel Lenses screw thread
Structural plane, the curvature of the light-gathering concave-surface mirror, Fresnel Lenses or Fresnel Lenses helicitic texture face is identical with the concave mirror
Or it is close.When optically focused projection screen is light-gathering concave-surface mirror, optionally, optimization light path can be placed at light-gathering concave-surface mirror opening
Device.Optically focused projection screen flank and light-gathering concave-surface the mirror reflecting surface is hologram imaging surface.When this screen is used to carry on the back
During throwing, Fresnel Lenses or the transparent material screen with Fresnel Lenses helicitic texture face, the optically focused projection can be used
Screen helicitic texture face is located remotely from optional on the outside of imaging optical path side, the helicitic texture face of the optically focused projection screen plate every light
Film.When this screen is used to just throw, negative Fresnel Lenses can be used or recessed with Fresnel Lenses helicitic texture face or optically focused
Face mirror screen, during using band Fresnel helicitic texture screen, the optically focused projection screen helicitic texture face is located at close to imaging
Road side, its helicitic texture face is negative Fresnel Lenses helicitic texture face, and helicitic texture face need to plate reflectance coating.Use light-gathering concave-surface
During mirror, the reflecting surface of light-gathering concave-surface mirror need to be towards imaging optical path.
Optionally, the optically focused projection screen, can have sandwich construction, various pad pasting and other optimal imaging effects
Equipment is constituted.
Optionally, speculum can be set between the projection source and the optically focused projection screen, for changing imaging
Road.The speculum can be half-reflecting half mirror or completely reflecting mirror.
Further, the projection source is the electronic equipment or material object to form stereo-picture light source.
Further, the concave mirror is as projection source container, and bottom has opening, and the concave mirror can be by beneficial to scattered
The making of hot material.
Optionally, half-reflecting half mirror is provided between the concave mirror and the optically focused projection screen, half-reflecting half mirror is anti-
The position that face is located at the concave surface mirror foci 1/2 is penetrated, half-reflecting half mirror reflecting surface is towards the concave mirror face, the concave surface
The plane of mirror foci direction opening is overlapped with half-reflecting half mirror reflecting surface, and semi-transparent pellicle mirror non-reflecting surface uses polaroid to cause finger
The light for determining angle is projected.By the combination of half-reflecting half mirror and the concave mirror, make projection source surface light described
Reflected between concave mirror and half-reflecting half mirror, make a part of light focusing in the concave mirror focal point, a part of light ray parallel
Half-reflecting half mirror is projected, to reach the purpose of optimal imaging light path.
Further, the projection source is material object, and light source need to be arranged on to the back side of the concave mirror, just to opening, opened
Light guide plate is provided with mouthful, the projection source is set in the reflecting surface bottom of the concave mirror.
Further, it can select to place projection lens on the imaging optical path of the concave mirror and the optically focused projection screen
Head.
Further, the projection lens can be made up of one or more same or a variety of lens.
Technical scheme has the following advantages that：
The holographic projector of the reproduction article 3-dimensional image of the present invention, it is three-dimensional by the reflective surface projection source of concave mirror
Light, recycles the optically focused imaging effect of optically focused projection screen, and the holography of projection source can be observed on optically focused projection screen
Image；The present invention is simple in construction, with low cost, facilitates civilian popularization and uses；Perpendicular to optically focused projection screen level 360
Degree, vertical certain angle can observe hologram；Without material object between user and line holographic projections image, user can be straight
Contact and hologram；There can be multiple combinations, a variety of projection schemes are optional.
Certainly, any product for implementing the present invention it is not absolutely required to the above-mentioned all device architectures of the above.
Brief description of the drawings
Fig. 1 reproduces the holographic projector structural representation of article 3-dimensional image for the first of the invention.
Fig. 2 is the holographic projector structural representation of second of reproduction article 3-dimensional image of the present invention.
Fig. 3 is the holographic projector structural representation of the third reproduction article 3-dimensional image of the present invention.
Fig. 4 is the holographic projector structural representation of the 4th kind of reproduction article 3-dimensional image of the present invention.
Wherein, 1- concave mirrors, 2- half-reflecting half mirrors, 3- projection sources, 4- openings, 5- holograms, 6- light sources, 7- are guide-lighting
Plate, 8- optically focused projection screens, 9- Fresnel lenses.
Embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
Embodiment 1
As shown in figure 1, the holographic projector for the first reproduction article 3-dimensional image that the present invention is provided, including projection source 3,
Concave mirror 1 and half-reflecting half mirror 2, the bottom of concave mirror 1 have opening 4, and the projection source 3 is arranged on the concave mirror 1
Reflecting surface bottom, the half-reflecting half mirror 2 is arranged on the front of the concave mirror 1, the concave mirror 1 and the half-reflecting half mirror
2 combinations form optically focused projection screen, and the hologram 5 of the projection source 3 is formed on the optically focused projection screen.
Wherein, the concave mirror 1 is combined with half-reflecting half mirror 2, and projection source 3 is placed in the reflecting surface bottom of concave mirror 1,
Now this composite screen, again as projection source container, forms the simplest composition side of the present invention i.e. as optically focused projection screen
Formula.
Wherein, when the concave mirror 1 combines to form optically focused projection screen with the half-reflecting half mirror 2, the half-reflection and half-transmission
The reflecting surface of mirror 2 is located at the position of the focus 1/2 of concave mirror 1, and the reflecting surface of the half-reflecting half mirror 2 is towards the concave mirror
1 reflecting surface, the plane of the focus direction opening 4 of concave mirror 1 is overlapped with the reflecting surface of the half-reflecting half mirror 2；Optionally,
The non-reflecting surface of semi-transparent pellicle mirror 2 uses polaroid that the light of specified angle is projected.Half-reflecting half mirror 2 is that stickup half is anti-
Penetrate the acrylic glass of film.
Wherein, the opening 4 of the bottom of concave mirror 1 is circular port, and light guide plate 7 is provided with the circular port, described
The lower section of light guide plate 7 sets the light source 6.Light source 6 is placed in the downside of light guide plate 7, light is uniformly injected in concave mirror 1.
Wherein, the projection source 3 can be material object, can also be the electronic display unit to form stereo-picture light source.
Wherein, the concave mirror 1 can be by the making beneficial to heat sink material.
The holographic projector that the present embodiment 1 is provided, it is simple in construction, it is easy to use, it is with low cost, it is adaptable to rear-projection, equal
The line holographic projections of ratio.
Embodiment 2
As shown in Fig. 2 the holographic projector for the first reproduction article 3-dimensional image that the present invention is provided, including projection source 3,
Concave mirror 1 and optically focused projection screen 8, the projection source 3 are arranged on the reflecting surface bottom of the concave mirror 1, the projection source 3
Projection ray reaches the optically focused projection screen 8, and hologram 5 is formed on the optically focused projection screen 8.
Wherein, speculum can be set between the projection source 3 and the optically focused projection screen 8, for changing imaging
Road.The speculum can be half-reflecting half mirror 2 or completely reflecting mirror.
Wherein, half-reflecting half mirror 2, half-reflecting half mirror 2 are provided between the concave mirror 1 and the optically focused projection screen 8
Reflecting surface is located at the position of the focus 1/2 of concave mirror 1, and the reflecting surface of half-reflecting half mirror 2 is towards the reflecting surface of concave mirror 1, institute
The plane for stating the focus direction opening of concave mirror 1 is overlapped with the reflecting surface of half-reflecting half mirror 2.Pass through half-reflecting half mirror 1 and the concave surface
The combination of mirror 1, makes the surface light of projection source 3 be reflected between the concave mirror 1 and half-reflecting half mirror 2, makes a part of light
Line focus is in the focal point of concave mirror 1, and a part of light ray parallel projects half-reflecting half mirror 2, to reach optimal imaging light path
Purpose.
Wherein, the projection source 3 is the electronic equipment or material object to form stereo-picture light source.
Wherein, the concave mirror 1 is as projection source container, and bottom has opening 4, and the concave mirror 1 can be by beneficial to scattered
The making of hot material.
Wherein, the projection source 3 is material object, and light source 6 need to be arranged on to the back side of the concave mirror 1, just to opening 4, opened
4 are provided with light guide plate 7 at mouthful, and the projection source 3 is set in the reflecting surface bottom of the concave mirror 1.
The present embodiment 2 is overlapped by optically focused projection screen 8 with the focus of concave mirror 1, the focus light of concave mirror 1 is converted to flat
Row light, to remove part interference light.After half-reflecting half mirror 2 is combined with concave mirror 1, it can be converted to some light parallel
Light, directional light is focused on above screen, now see the hologram 5 of amplification again by optically focused projection screen 8.For this
For example, the virtual image in the objects projection source 3 that half-reflecting half mirror 2 is reflected, it is located at the focus partial below of concave mirror 1, through concave surface
The directional light that mirror 1 is changed is amplification light.
Wherein, the optically focused projection screen 8 can be Fresnel Lenses or with the saturating of Fresnel Lenses helicitic texture face
Bright material screen, the curvature and the concave mirror 1 in Fresnel Lenses or Fresnel Lenses the helicitic texture face is same or like.
The optically focused projection screen helicitic texture face is hologram imaging surface.When this optically focused projection screen is used for rear-projection, Fresnel
Optional on the outside of lens screw thread to plate mirror film or every light film, the optically focused projection screen face of plated film needs user oriented.When the projection of this optically focused
When screen is used to just throw, optional plating mirror film on the inside of Fresnel Lenses screw thread, and be negative Fresnel helicitic texture, the optically focused of plated film
Projection screen face needs user oriented.During using light-gathering concave-surface mirror as projection screen, it can only be used to just throw, and light-gathering concave-surface mirror
Reflecting surface need to be towards imaging optical path.
The holographic projector that the present embodiment is provided, it is simple in construction, it is easy to use, it is with low cost, it is adaptable to rear-projection mode
Magnification ratio projection source line holographic projections.
Embodiment 3
On the basis of embodiment 2, as shown in figure 3, between the optically focused projection screen 8 and the half-reflecting half mirror 2 also
It is provided with projection lens, projection lens can select Fresnel saturating in Fresnel Lenses 9 or ordinary lenses, embodiment 3
Mirror 9, the helicitic texture face of the Fresnel Lenses 9 is located at close to imaging optical path side.
Wherein, the helicitic texture of optically focused projection screen 8 is upwardly；Downwards, and it is burnt for the helicitic texture of Fresnel Lenses 9
Point is overlapped with the focus of concave mirror 1；The curvature of optically focused projection screen 8 and Fresnel Lenses 9 is identical with the curvature of concave mirror 1 or phase
Closely.
The present embodiment 3 is overlapped by Fresnel Lenses 9 with the focus of concave mirror 1 amplifies the focus light of concave mirror 1, and changes
For directional light, directional light is focused on above screen again by optically focused projection screen 8, now it can be seen that the holographic shadow of amplification
As 5.The holographic projector that the present embodiment is provided, it is adaptable to the magnification ratio projection source line holographic projections of rear-projection mode.
Embodiment 4
On the basis of embodiment 2, as shown in figure 4, between the optically focused projection screen 8 and the half-reflecting half mirror 2 also
Fresnel Lenses 9 is provided with, the helicitic texture face of the Fresnel Lenses 9 is located at close to imaging optical path side.Especially, it is described
The focus of Fresnel Lenses 9 is overlapped with the focus of the concave mirror 1；It is provided with the helicitic texture face of optically focused projection screen 8
Reflecting layer, and its helicitic texture face is negative Fresnel Lenses helicitic texture face, in the focal point shape of the optically focused projection screen 8
Into the hologram 5 of the projection source 3.
Wherein, it can select to place projection lens on the imaging optical path of the concave mirror 1 and the optically focused projection screen 8
Head.Projection lens can select Fresnel Lenses in Fresnel Lenses or ordinary lenses, Fig. 4.
Wherein, the projection lens can be made up of one or more same or a variety of lens.
The present embodiment 4 is overlapped by Fresnel Lenses 9 with the focus of concave mirror 1 amplifies the focus light of concave mirror 1, and changes
For directional light, directional light is focused on below screen again by optically focused projection screen 8, now it can be seen that the holographic shadow of amplification
As 5.The holographic projector that the present embodiment is provided, it is adaptable to which the positive dispensing vast scale projection source holography that projecting apparatus is separated with screen is thrown
Shadow.
Although above with general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (10)
1. a kind of holographic projector for reproducing article 3-dimensional image, including projection source, concave mirror and optically focused projection screen, its feature
It is, the projection source is arranged on the reflecting surface bottom of the concave mirror, the projection ray of the projection source reaches the optically focused
Projection screen, hologram is formed on the optically focused projection screen.
2. a kind of holographic projector for reproducing article 3-dimensional image, including projection source, concave mirror and half-reflecting half mirror, its feature exist
In the concave mirror bottom has opening, and the projection source is arranged on the reflecting surface bottom of the concave mirror, the half-reflection and half-transmission
Mirror is arranged on the front of the concave mirror, and the concave mirror and the half-reflecting half mirror combine to form optically focused projection screen, in institute
State the hologram that the projection source is formed on optically focused projection screen.
3. the holographic projector according to claim 1 or 2 for reproducing article 3-dimensional image, it is characterised in that the projection
Source is the electronic equipment or material object to form stereo-picture light source.
4. it is according to claim 2 reproduce article 3-dimensional image holographic projector, it is characterised in that the concave mirror with it is described
When half-reflecting half mirror combines to form optically focused projection screen, the reflecting surface of the half-reflecting half mirror is located at the concave surface mirror foci 1/2
Position, the reflecting surface of the half-reflecting half mirror towards the concave mirror reflecting surface, the concave mirror focus direction opening
Plane is overlapped with the reflecting surface of the half-reflecting half mirror.
5. the holographic projector according to claim 1 for reproducing article 3-dimensional image, it is characterised in that the optically focused projection
Screen is light-gathering concave-surface mirror, Fresnel Lenses or with Fresnel Lenses helicitic texture face, and the light-gathering concave-surface mirror, Fresnel are saturating
The curvature and the concave mirror in mirror or Fresnel Lenses helicitic texture face are same or like.
6. the holographic projector according to claim 5 for reproducing article 3-dimensional image, it is characterised in that the optically focused projection
When screen is used for rear-projection, the helicitic texture face of the optically focused projection screen is located remotely from imaging optical path side, the optically focused projection
It is provided with the outside of the helicitic texture face of screen every light film；When the optically focused projection screen is used to just throw, the optically focused projection screen
Helicitic texture face be located at close to imaging optical path side, the helicitic texture face is negative Fresnel Lenses helicitic texture face, screw thread
Structural plane is provided with reflectance coating.
7. it is according to claim 1 reproduce article 3-dimensional image holographic projector, it is characterised in that the projection source with
Speculum is provided between the optically focused projection screen, for change or optimal imaging light path；The speculum is half-reflection and half-transmission
Mirror or completely reflecting mirror.
8. the holographic projector according to claim 3 for reproducing article 3-dimensional image, it is characterised in that the projection source is
When in kind, a light source be arranged at the back side of the concave mirror, the just opening to the concave mirror bottom, the opening and be provided with
Light guide plate, the projection source is set in the reflecting surface bottom of the concave mirror.
9. the holographic projector according to claim 1 for reproducing article 3-dimensional image, it is characterised in that in the concave mirror
Projection lens is placed with the imaging optical path of the optically focused projection screen.
10. the holographic projector according to claim 9 for reproducing article 3-dimensional image, it is characterised in that the projection lens
Head is made up of one or more same or a variety of lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710574450.5A CN107167991A (en) | 2017-07-14 | 2017-07-14 | A kind of holographic projector for reproducing article 3-dimensional image |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710574450.5A CN107167991A (en) | 2017-07-14 | 2017-07-14 | A kind of holographic projector for reproducing article 3-dimensional image |
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| CN107167991A true CN107167991A (en) | 2017-09-15 |
Family
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| CN201710574450.5A Pending CN107167991A (en) | 2017-07-14 | 2017-07-14 | A kind of holographic projector for reproducing article 3-dimensional image |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110989316A (en) * | 2019-12-23 | 2020-04-10 | 南京南智先进光电集成技术研究院有限公司 | Miniature stereo holographic imaging device |
| CN111679540A (en) * | 2020-06-22 | 2020-09-18 | 深圳康佳电子科技有限公司 | Projection device |
| CN114995082A (en) * | 2022-07-08 | 2022-09-02 | 华夏城视网络电视股份有限公司 | Method for virtual projection imaging based on light reflection |
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| CN110989316A (en) * | 2019-12-23 | 2020-04-10 | 南京南智先进光电集成技术研究院有限公司 | Miniature stereo holographic imaging device |
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| CN114995082A (en) * | 2022-07-08 | 2022-09-02 | 华夏城视网络电视股份有限公司 | Method for virtual projection imaging based on light reflection |
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Application publication date: 20170915 |