CN1164045A - Switchable lens/diffuser - Google Patents
Switchable lens/diffuser Download PDFInfo
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- CN1164045A CN1164045A CN 96100237 CN96100237A CN1164045A CN 1164045 A CN1164045 A CN 1164045A CN 96100237 CN96100237 CN 96100237 CN 96100237 A CN96100237 A CN 96100237A CN 1164045 A CN1164045 A CN 1164045A
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- liquid crystal
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Abstract
A switchable lens/diffuser including an optical component constructed to form an optical image in cooperation with light directed thereon and a layer of polymer dispersed liquid crystal material having a clear state and a diffusing state, the layer of material being positioned in conjunction with the optical component so that the optical component forms an optical image when the layer of polymer dispersed liquid crystal material is in the clear state and the layer of polymer dispersed liquid crystal material serves as a diffusing screen to form an image in cooperation with the light directed thereon in the diffusing state.
Description
The present invention relates to optical lens system, be specifically related to the optical lens system in the picture production device (image man-ifestation apparatns).
Prior art uses optical element or parts to make light effect by this optical element or parts, so as to enlarged image, focusedimage, alignment light, reflection ray and various other application.
The light diffusion body is the optical element that light can not be passed through, but makes light diffusion or make light along many different direction scatterings.The light diffusion body in the many electronic installations such as televisor and graphoscope in order to as display screen, because the image that projects on the diffuser arrangement presents a direct image.
In some visible system, in single electronic installation, combine two different displays, one of them applied optics parts produces the virtual image, and the Another application diffuser produces direct image.A problem of this device is that two displays separate physically, the different image of zones of different that the operator must watch this electronic installation attentively.In addition, each different image needs a different pictcure generator.In many application scenarios, this is inconvenient, and will use additional praedial electronic installation (addi-tional estate of the electronic device).
Wish very much, produce a kind of single switchable lens/diffuser device, or produce the function of diffuser in order to generation ordinary optical functions of components.
In view of the above, an object of the present invention is to provide a kind of switchable lens/diffuser device, can between optics state and diffuser state, switch.
Another object of the present invention provides a kind of lens/diffuser device that can make quite easily and operate, switchable.
Another purpose of the present invention provides and a kind ofly can be quite easily comprehensively presents in the electronic installation of device and so on, switchable lens/diffuser device in for example dual image.
A further object of the present invention provides a kind ofly can be made to such an extent that in fact comprise comprehensive any optics, switchable lens/diffuser device.
Above-mentioned problem and other problem can partly solve in following switchable lens/diffuser at least, and above-mentioned purpose also can realize therein with other purpose.This switchable lens/diffuser contains: an optics, and it is got and can work down, form an optical imagery with direct projection light one thereon by body plan; A polymer foil, liquid crystal material by diffusion is formed, have pellucidity and diffusive condition, this liquid crystal material thin layer and optics are bonded together in place, this optics forms an optical imagery when being in pellucidity with the polymer foil of forming at the liquid crystal material of diffusion, and under diffusive condition, the polymer foil that the liquid crystal material of this diffusion is formed plays the diffusion screen, forms an image to work down with direct projection light one thereon.
Fig. 1 illustrates the rough schematic view of picture production device, and it comprises the switchable lens/diffuser with the first working method work;
Fig. 2 illustrates sectional view that little xsect partly amplifies among Fig. 1;
Fig. 3 show with Fig. 1 with the similar synoptic diagram of the picture production device of the second working method work;
Fig. 4 and Fig. 5 illustrate the synoptic diagram of switchable lens/diffuser under first and second working methods of another kind of type respectively;
Fig. 6 and Fig. 7 illustrate the synoptic diagram of switchable lens/diffuser under first and second working methods of another type respectively;
Fig. 8 and Fig. 9 illustrate the synoptic diagram of switchable lens/diffuser under first and second working methods of another type respectively;
Figure 10 and Figure 11 illustrate respectively also has one type the synoptic diagram of switchable lens/diffuser under first and second working methods;
Figure 12 illustrates a kind of rough schematic view that has comprised the electronic installation of the picture production device that has a switchable lens/diffuser.
Referring to Fig. 1, the rough schematic view of picture production device shown in the figure 10, it contains a switchable lens/diffuser 12, and example can be worked under first working method.Picture production device 10 also contains an image source or pictcure generator 15 and a projection objective system 20.In order to amplify from the image of pictcure generator 15 and to project on the switchable lens/diffuser 12.For simplify accompanying drawing and be convenient to the explanation for the purpose of, do not comprise concrete installation details among the figure.
Pictcure generator 15 contains a two-dimensional array of luminescence unit, and luminescence unit can be any in any inorganic light-emitting diode, Organic Light Emitting Diode, electroluminescent device, semiconductor vertical cavity laser instrument or the light transmissive device etc.Usually, this two-dimensional array is big must to be enough to comprise enough pixels or luminescence unit, so that demonstrate a whole frame (for example text of picture, map, photo and/or multirow) on the surface of two-dimensional array, and need not to swing mirror etc.These electronic units are pressed row and column usually and are arranged, and every row and every row for example comprise nearly 500 to 2000 electronic installations.In some cases, a luminescence unit limits a pixel; In some cases, comprise additional unit, so that extra power and redundance to be provided; In some cases, used two or more unit to provide colored in each pixel.In addition, in great majority were used, image illuminator 15 had the size of several millimeters magnitudes (for example 2-9mm) on one side.For example, when pictcure generator 15 was made up of the array of a semiconductor device, it formed on single semi-conductor chip.
Switchable lens/diffuser 12 is a Fres-nel (Fresnel) lens in this specific embodiment, it is optically worked with projection objective system 20, and the little image that pictcure generator 15 is produced forms big (for example 8.5 " * 10 ") virtual image.Usually, this big virtual image manifests to the beholder who is positioned at picture production device 10 back to be watched, as shown in Figure 1.Switchable lens/diffuser 12 body plans must have a central cavity 21, the working portion of central cavity 21 and Fresnel lens that is, the whole together extensions of switchable lens/diffuser 12 except outer edge, this is the purpose that is used to install.Fig. 2 illustrates the amplification profile of switchable lens/diffuser, shows the details of cavity 21.Can clearly be seen that from Fig. 2 front portion 22 and rear portion 23 cooperations are to limit cavity 21 therebetween.The optical material (for example glass, optical plastic etc.) that note that front portion 22 and rear portion 23 usefulness capacities is made, so that required lens function to be provided.
Also have on anterior 22 the inside surface one deck thin, transparent conductive material layer 24 on the optics, have on the inside surface at rear portion 23 one deck thin similarly, transparent conductive material layer 25 on the optics.Layer 24 and 25 is isolated mutually on electric, and they have a potential source 31 of being represented by battery, are connected thereto by a circuit 30 that has switch 32.When switch 32 closures, potential source 31 is directly connected to conductive layer 24 and 25, and it produces an electric field on the cavity between two conductive layers 21. Layer 24 and 25 by any easily, light transmissive material forms, for example indium-Xi-oxide, very thin metal, some conducting polymer or materials similar.
Referring to Fig. 3, switchable lens/diffuser 12 is under second working method shown in the figure.Under this working method, switch 32 is opened, and removing the electric field on the material 35, so that material 35 is orientated randomly, thereby becomes translucent or the diffusion shape.Under this working method, at a lip-deep less direct visual image of seeing from 12 1 short-range some beholders in 40 places of switchable lens/diffuser at switchable lens/diffuser 12, it can be greater than the size of switchable lens/diffuser 12 (outer surface is long-pending).
In the electronic installation such as cell phone, pager, data memory devices etc., the picture production device 10 that is under first working method (Fig. 1) can be used to show a large amount of information, for example picture, map, photo and/or multiline text.In addition, the virtual image is normally watched by an aperture, and the dark background that has a no surround lighting to invade, so that the virtual image is not subjected to the influence of bias light or surround lighting basically.In view of this, the picture production device 10 that is under first working method can be applied in the environment of high ambient light effectively.In this electronic installation, be in the information that picture production device 10 under second working method (Fig. 3) can be used for showing lesser amt, the message of telephone number, one or two row storages etc. for example, or in low ambient light and/or big eye distance application scenario.
Referring to Fig. 4 and Fig. 5, switchable lens/diffuser 45 embodiment shown in the figure.Switchable lens/diffuser 45 is a biconvex lens that has the central cavity 46 of filling up the PDLC material in this object lesson.As an example of the method for making switchable lens/diffuser 45, central cavity 46 can form the container of a thin disk or diaphragm shapes, applies the material of one deck printing opacity, conduction on its each body surfaces.Then, a pair of plano-convex lens 47 and 48 is adhered to the corresponding main surfaces of central cavity 46, to finish this structure.
As previously mentioned, when the PDLC material was activated, liquid crystal itself came into line them, so that light passes through, when outage, adjusted himself again randomly, to produce diffuse effect or translucent effects.As shown in Figure 4, the PDLC material makes it transparent when being activated, the effect of switchable lens/diffuser 45 such as the biconvex lens of same standard.In this example, the collimated light that enters this mirror focuses on a little on 49.As shown in Figure 5, the PDLC material makes it be diffusion shape or translucent when not activating, the effect of switchable lens/diffuser 45 such as same diffuser.Make the light diffusion that enters switchable lens/diffuser 45, and out-focus.
According to similar mode, Fig. 6 and Fig. 7 illustrate two kinds of working methods of 50 1 embodiment of switchable lens/diffuser, and it contains the cavity or the container 52 of 51 and PDLC materials of a diffractive optical element (DOE).Similarly, Fig. 8 and Fig. 9 illustrate two kinds of working methods of 55 1 embodiment of switchable lens/diffuser, and it contains the cavity or the container 57 of an individual holographic cell 56 and a PDLC material.In addition, Figure 10 and Figure 11 illustrate two kinds of working methods of 60 1 embodiment of switchable lens/diffuser, and it contains the cavity or the container 62 of a shaping minute surface 61 and a PDLC material.Those skilled in the art obviously can make many variants and modifications when reading this paper.
Referring to Figure 12, electronic installation shown in the figure 65, for example pager, pocket telephone, cellular telephone, portable database etc.Electronic installation 65 contains common data source, and it comprises storer and/or data receiver circuit and equipment, and label is 67.Pictcure generator 68 is positioned at the housing of electronic installation 65, and be connected to data source 67, to be used on the surface of electronic installation 65, producing an image from the data of data source 67, as mentioned above, pictcure generator 68 contains many light-emitting devices of arranging by row and column, they are by certain selected order addressing, so that produce image by the light of emission.
The light of being launched by pictcure generator 68 utilizes projection objective system 69 to project on the first surface 70, and this first surface 70 makes light directly invest second surface 72.Second surface 72 makes light pass through switchable lens/diffuser 75 and outwards throws, and being positioned at a little, 76 beholder can see image.Surface 70 and 72 can be comprehensively in a waveguide virtual image display, the waveguide virtual image display is similar on June 29th, 1993 disclosed, exercise question and is the United States Patent (USP) 5 of " WaveguideVirtual Image Display ", 244, disclosed waveguide virtual image display in 198 is quoted here together with disclosed various Waveguide display embodiment in it as a reference.In this specific embodiment, switchable lens/diffuser 75 comprises a Fresnel Lenses part 77 and one common basically cavity or container 79 that extend, that fill up the PDLC material, in each side of cavity or container 72 the conductive layer (not shown) is arranged.These conductive layers are electrically connected to the controller part 80 of electronic installation 65.
65 1 kinds can be workable simple routine as electronic installation, controller 80 contains " direct/void " switch, in order to switch between the direct image and the virtual image.Under the standard operation mode, electronic installation 65 provides a direct image by 75 couples of operators of switchable lens/diffuser.Under this working method, PDLC cavity or container 79 be not activated can, thereby be rendered as diffusing surface.Under this working method, pictcure generator 68 also can be switched usually, so that one group of light-emitting device is worked abreast, forms each pixel of image.Like this, pixel is few more, and image is simple more, normally several alphanumeric symbols, for example telephone number or simple storing message etc.Although image is simpler, it is much bright, also can see clearly under the state that is dominant at surround lightings such as most of offices, families.
If the operator receives an indication, indicating big or complicated message just transmits, if or the operator wish to see from data-carrier store 67 than complex image, then this operator switches to " direct/void " switch on the virtual image position simply, cavity or container 79 two ends at the PDLC material apply an electric field, so that the PDLC material becomes printing opacity.Simultaneously, the light-emitting device in the pictcure generator 68 is separated from burst mode, to produce the image of full page information.In this manner, the brightness deterioration of image; But because of this image is seen as the virtual image, so no bias light or surround lighting disturb this virtual image nocuously.
In view of the above, herein disclosed is a kind of single, switchable lens/diffuser, can be easily between optics state and diffuser state TURP change, in order to produce common optics function or diffuser function.In addition, this switchable lens/diffuser device can comprehensively become dual image with comparalive ease and present device on making and quite simple in the operation in electronic installation.Though, description, several specific embodiments are as an example, this switchable lens/diffuser device can make comprehensive most optics.
Although described specific embodiments of the invention, those skilled in the art can make further modification and improvement.Be appreciated that the restriction of the particular form of the present invention shown in not being subjected to, appending claims covers all modifications that do not depart from spirit of the present invention and category.
Claims (10)
1. switchable lens/diffuser is characterized in that:
An optics is got and can cooperate and form an optical imagery with directly projecting light on it by body plan;
A polymer diffusion liquid crystal material layer, have pellucidity and diffusive condition, this material layer is in place with this optics, form an optical imagery with this optics when the polymer diffusion liquid crystal material layer is in pellucidity, and when being in diffusive condition, the polymer diffusion liquid crystal material layer plays the diffusion screen, cooperates and forms an image with directly projecting light on it.
2. switchable lens/diffuser according to claim 1 is characterized in that the polymer diffusion liquid crystal material layer is arranged in the cavity of this optics.
3. switchable lens/diffuser according to claim 1 is characterized in that, the device that is associated with the polymer diffusion liquid crystal material layer is in order to switch this polymer diffusion liquid crystal material layer between pellucidity and diffusive condition.
4. switchable lens/diffuser according to claim 3, it is characterized in that, the device that is associated with the polymer diffusion liquid crystal material layer, a pair of optically transparent conductive layer is arranged, one of them is positioned on each opposite flank of polymer diffusion liquid crystal material layer, in order to an electromotive force to be provided at the polymeric layer two ends.
5. switchable lens/diffuser is characterized in that:
An optics, got and can cooperate and form an optical imagery with directly projecting light on it by body plan, this optics can be selected from following group: optical lens, Fresnel Lenses, diffraction lens, holographic lens, diffractive optical components and volume hologram parts;
A polymer diffusion liquid crystal material layer, have pellucidity and diffusive condition, this material layer is in place with this optics, with when this polymer diffusion liquid crystal material layer is in pellucidity, this optics forms an optical imagery, and when diffusive condition, the polymer diffusion liquid crystal material layer plays the diffusion screen, to cooperate and form an image with directly projecting light on it;
First and second electric installations lay respectively on the opposite flank of this polymer diffusion liquid crystal material layer, in order to provide an electromotive force at these polymer diffusion liquid crystal material layer two ends.
6. a picture production device is in order to provide the direct image or the virtual image selectively, and this device is characterized in that:
The pictcure generator device is in order to produce a two dimensional image;
A projection objective system is on the adjacent plane in order to image projection to a distant place that will be produced with this pictcure generator device, position;
A switchable lens/diffuser is installed on the plane, distant place, comprising:
An optics, got to cooperate with the image that projection produces thereon by body plan and form a virtual image, this optics can be selected from following group: optical lens, Fresnel Lenses, diffraction lens, holographic lens, diffractive optical components and volume hologram parts;
A polymer diffusion liquid crystal material layer, have bright state of lens and diffusive condition, this material layer is in place with this optics, with when the polymer diffusion liquid crystal material layer is in pellucidity, this optics forms a virtual image, and when diffusive condition, the polymer diffusion liquid crystal material layer plays the diffusion screen, forms a direct image to cooperate with projection image thereon;
First and second electric installations, the relative side that lays respectively at this polymer diffusion liquid crystal material layer makes to switch this polymer diffusion liquid crystal material between pellucidity and diffusive condition in order to provide an electromotive force at these polymer diffusion liquid crystal material layer two ends.
7. device according to claim 6 is characterized in that, each of first and second electric installations is the indium-Xi-oxide of printing opacity, conduction.
8. device according to claim 6, it is characterized in that image device has a two-dimensional array of the luminescence unit spare composition of selecting from following group: inorganic light-emitting diode, Organic Light Emitting Diode, electroluminescence device, semiconductor vertical cavity laser instrument and light conduction device.
9. device according to claim 6, it is characterized in that, image device has switching device shifter, in order to switch between following dual mode: the image mode of the high data content that low data content image mode that low ambient light, big eye distance are used and high ambient light sheet are used.
10. device according to claim 9, it is characterized in that, image device is connected, work with switchable lens/diffuser, with when switchable lens/diffuser is in diffusive condition, image device is in low data content image mode, and when switchable lens/diffuser was in pellucidity, image device was in high data content image mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96100237 CN1164045A (en) | 1996-04-30 | 1996-04-30 | Switchable lens/diffuser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96100237 CN1164045A (en) | 1996-04-30 | 1996-04-30 | Switchable lens/diffuser |
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| Publication Number | Publication Date |
|---|---|
| CN1164045A true CN1164045A (en) | 1997-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96100237 Pending CN1164045A (en) | 1996-04-30 | 1996-04-30 | Switchable lens/diffuser |
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| CN (1) | CN1164045A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221879A (en) * | 2010-04-15 | 2011-10-19 | 韩国电子通信研究院 | User interface device and method for recognizing user interaction using same |
| CN104898283A (en) * | 2015-05-25 | 2015-09-09 | 青岛歌尔声学科技有限公司 | Ocular lens system and head-mounted display |
| CN105492878A (en) * | 2013-06-18 | 2016-04-13 | 拉莫特艾特特拉维夫大学有限公司 | Apparatus and method for snapshot spectral imaging |
-
1996
- 1996-04-30 CN CN 96100237 patent/CN1164045A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221879A (en) * | 2010-04-15 | 2011-10-19 | 韩国电子通信研究院 | User interface device and method for recognizing user interaction using same |
| CN102221879B (en) * | 2010-04-15 | 2016-01-20 | 韩国电子通信研究院 | User interface facilities and use it to identify the method for user interactions |
| CN105492878A (en) * | 2013-06-18 | 2016-04-13 | 拉莫特艾特特拉维夫大学有限公司 | Apparatus and method for snapshot spectral imaging |
| CN104898283A (en) * | 2015-05-25 | 2015-09-09 | 青岛歌尔声学科技有限公司 | Ocular lens system and head-mounted display |
| CN104898283B (en) * | 2015-05-25 | 2017-09-29 | 青岛歌尔声学科技有限公司 | A kind of eyepiece system and head-mounted display |
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