GB2507462A

GB2507462A - Variable multi-view display

Info

Publication number: GB2507462A
Application number: GB1121775.9A
Authority: GB
Inventors: David James
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-19
Filing date: 2011-12-19
Publication date: 2014-05-07
Also published as: GB201121775D0

Abstract

Until now 3D displays, especially glasses-free displays have fixed optical and physical alignment constraints, which can cause serious design, manufacture, costs, setup, use and versatility problems. This invention overcomes these problems and opens up an number of other possibilities in 3D displays including those of holography. This is due to freeing 3D image decoder screen constraints by moving the source 3D or multi-view image to an optically or otherwise adjustable layer. For example, until recently 3D lenticular barriers or polarised screens have been fixed to the source image surface, usually an LCD or LED fixed pitch display whereas the current invention operates by placing the source image on an adjustable adjustment layer or by modifying the source image with the adjustable adjustment layer.

Description

Variable Multiview System

Background of 3D Displays

There are a number of 3D display methods, they include: Lenticular, Barrier, Polar, Shutter, Holographic They all involve encoding multiview or 3D images into 2D images, which are then decoded in various ways in order to produce the 3D effect.

These 3D effects requires that slightly different scene viewpoints are sent to each eye.

Lenticular 3D, uses arrays of long thin cylindrical lens and requires that multiview interlaced images are accurately placed under said lenses. These lens then spread the various viewpoints out as a cylindrical sector into space. At the correct distance from the decoder screen or sweet spot' different source image viewpoints will be seen by each eye leading to the 3D effect.

Barrier 3D is similar except that instead of lenses, opaque strips alternated with clear material are placed in front of a multiview interlaced image. At the correct distance from the decoder screen or "sweet spot", the left eye, will receive one viewpoint and the right eye the other.

Polar 3D is similar except that instead of opaque strips alternated with clear adjustment layer, 1 or more polarised or depolarising strips are placed in front of a multiview interlaced image. By wearing variously polarised filter glasses the left eye, will receive one viewpoint and the right eye the other.

Shutter 3D, uses time multiplexing, to send the left view to the left eye and the right view to the right eye at the correct moment by activating electronically controlled shutter glasses.

Holographic 3D, involves constructing an interference pattern of a 3D scene or various viewpoints, usually by illuminating a 3D scene with a beam of monochromatic coherent light such as laser light and allowing the object reflected laser light to form an interference pattern with reference laser light, onto a surface thereby forming a 3D wavefront. This wavefront contains light phase information from every object angle that the reflected light has come into the wavefront from. The wavefront has encoded the 3D scene. To decode and view the 3D scene, the wavefront may be read with a parallel beam of laser light. Single views may be read or view with a single laser beam. There also exist methods to view the 3D wavefront or hologram with normal, incoherent, polychromatic or white light.Holographic images are mentioned, because, the design of universally variable image layer naturally leads on to concept of a programmable or variable wavetront.

That is; if a variable subtrate device is designed such that it variable in light encoding or decoding down to a spatial resolution of 0.3 micrometres or less then it has the ability to function as a variable diffractive lens or hologram.

Futhermore, it can function as a holographic capture or display or be used as a lens to modify, or correct errors in the other types of 3D display described above, by insertion between a multiview source and a decoder. It can be used in this method to vary the focal point of a lenticular array or to vary the perceived pitch of the source pixels. Also it can be used simply as a semi or variably transparent back-projection adjustment layer, allowing for image size, slant, curvature and focus adjustment.

General Description

From now on the capital letter words or abbreviations will be used to mean the following: ENCODED IMAGE the multiview image (El) ENCODED method or device for encoding or multiview images (EN) DECODER the multiview image viewing or reading system (DC) ADJUSTMENT LAYER the multiview image ajustment device (AL) SCREEN decoder and adjustment layer together (SC)( LIGHT EMITTER projector, laser or other light or image source (LE) This invention solves a number of problems concerning 3D projection devices, by making various device parameters adjustable.

One of the main problems with multiview image decoders such as lenticular or barrier screens, is their physical positioning and alignment relative to the image source.

If the image source (known from hereon as the source) is for example an LCD or LED display, the 3D decoder screen (known from hereon as the decoder) has to align exactly to the pixel layout on the source display.

Any discrepancy, even by 1 micron can result in a failure of a good 3D effect.

Examples of fixed physical parameters of some 3D displays are a) lens, barrier, polar decoder screen pitches, b) lens focus, c) decoder screen thickness.

Some such decoders also are slanted or offset relative to the source to avoid banding and other optical artifacts and to achieve optimal image quality and 3D effect.

Decoder slant and offset may sometimes be externally adjustable, but this is is very limited, difficult to adjust, and can result in cracking very expensive or irreplacable 3D decoder screens.

Insertion of an optically variable adjustment layer between a primary multiview image source such as a projector or LCD display allows for coarse and fine adjustment of a number of critical and normally fixed optical characteristics such as lens to pixel pitch alignment.

Such an (AL) can also be used after the decoder to limited extent.

A projector is basically a light emitting image with a convex lens that focused a real image onto a viewing surface.

Any light emitting device can become a projector, including a standard display monitor.

One way of doing this is to place a flat lens device in front of the display The adjustment layer may also act as such a flat lens.

One design solution is to include in the adjustment layer a optically or electronically or otherwise controllable medium. This would allow the adjustment layer to be used as a programmable or variable wavefront or hologram, a microlens array, or a diffractive flat lens.

One way to make the variable adjustment layer as a variable hologram is to optically create the wavefront, using a coherent light to setup the electrical and magnetic field properties at microscopic level, in the adjustment layer screen.

An electronic micro-variable adjustment layer could be made from something similar to a Digital Light Processor or other light controlling array (LCA), commonly used in digital projectors.

If the LCA pixel sizes are in the order of a wavelength of visible light, then the LCA can be used directly as a programmable RGB wavefront.

It is also possible to use a larger LCA as controllable wavefront, by focusing the image down to approximately 0.5 micron/per pixel size. This image when displayed on suitable subtrate can be used as a hologram Such a holographic adjustment layer needs to react to the imcoming wavefront by varying its absorbtion transmissivity or reflectivity or diffractivity.

A wavefront stored on a normal computer at the highest image resolution would only produce a hologram of a few millimeters square, when focussed through a projector lens onto a light sensitive or normal adjustment layer.

The projecting light should be coherent, (laser light projection). coherent light or normal light can be used to read or view the digitally produced hologram.

The very small digital hologram can be re-magnified for viewing, while still maintaining its 3D quality.

Such a system can be used as a programmable or realtime holographic 3D capture or display device, or as a flat lens or as a light modulator, eg, polariser.

An optically or electrically variable dye can be used to dynamically store a wavefront pattern.

In effect this makes the adjustment layer a realtime hologram. However it also has other uses as described above.

It can also be used as a flat array of microscopic diffracting lenses, giving the effect of one large lens.

This can be used to adjust alignment errors between multiview sources and decoder screens.

It can be used as a variable transmission back or front projection screen or adjustment layer, for other optical alignments to be made, such pixel pitch correction, for aligning to fixed lenticular, barrier or polar decoder screens.

One method of optically storing and retrieving and updating controllable holograms, is to capture the wavefront (WF) on electrically isolated photosensistive areas of adjustment layer, storing the WF as a variably charged surface. This is the hologram storage The charged WF storage surface, then copies the WF to another surface with a electrically controllable optical dye. This is the viewing or retrieval surface.

The dye surface is read or viewed as a hologram In between the storage and retrieval surfaces is a controllable shutter, which acts both as a reflective backing to the retrieval surface and as an optical isolator for the storage surface.

To update the store, the shutter is made transparent.

By using RGB writing lasers and RGB photosensitve storage chemicals, a full colour dynamic holographic storage and viewing system can be made.

A programmable hologram can also be used as a very high capacity and density holographic storage and computational device Also the images may be viewed from almost any direction by judicious use of deflecting mirrors. eg: a mirror placed in front of the emitting decoder can be used to reflect the 3D image back toward the projector.

Summary of the Invention:

A Variable Multiview System.

Comprising of: one or more light emitting sources, one or more adjustment layers, through which are projected one or more 3D or multiview encoded images, and where one or more layers are used as decoders for viewing or reading the 3D or multiview encoded images.

Detailed description

Specific Embodiments FIGURE 1 Explanation The Variable Multiview System may be used to vary the: 1) distance of an adjustment layer from the projector (figure 1, items 3), allowing for image size adjustment 2) distance of the both the decoder and adjustment layer from the projector (figure 1, items 3), allowing for image size adjustment 3) distance of the screen from the adjustment layer, (figure 1, items 5) allowing for screen lens to adjustment layer focus, or barrier mask sweet spot adjustment 4) rotation of either or both the adjustment layer and the screen (figure 1, items 4) allowing for pixel mask reduction and/or variable pixel to screen lens or barrier mask strip alignment 5)Transparency, allowing for variable image capture and transmission.

6)curvature of the adjustment layer and or the screen in any direction (figurel, items 5,6), (figurel, items 16,17) Items 8 -11 show mirrors used so that the viewing path is rotated so that the distance between the emitter and screen is reduced and direction of view relative to the emitter is changed Items 19 -21 depict a stereo or 3D or multiview camera (19) connected via an encoder (18) such as a computer, to a projector and screen. This scheme allows for direct multiview images to be observed from a multiview camera. The deflecting mirror 20 is optional.

Items 13 -14 depict a scheme for condensing the space needed to construct a viewing unit.

Items 15 -17 show curved deflectors and screen surfaces used for optical correction or other uses such as spatial or artistic effects.

FIGURE 2 Explanation Item 3 shows a curved look-around lenticular projection surface, with a rotating mirror (2) being moved by computer (7) controlled motor (4,6) The encoded multiview or 3D images are displayed around the lenticular cylinder sychronised by the computer. Lenticular has an inherent cone of vision but because light can leak through the sides of the lens, the system can be used with opto-isolators,

to constrain the field of view, described later.

Items 9,11 and 10 depict tractorix or lensing mirrors to cover all or part of the projection surface of a look-around system.

Examples of look-around projection schemes The following figures are only one of many options for curved, wrap-around or walk around 3D screen schemes. For example; say the maximum angle of observation of multiview lenticular is 60 degrees.

6 lenticular screens of 60 degree angle of observation will fit into a 360 degree walk-around screen. That is:6 different multiview projections can cover 360 degrees. Each of the 6 screens can carry different views of a 3D object.

By way of example; using a 1 0-multiview image per 60 degree viewing sector; a new image can be seen every 6 degrees of arc.

The seperate angular views may also be animated, ie not simply angular variations of the viewed object, but also including movement, morphing etc. As the viewer walks around the curved 3D screen they will see different angles of the viewed object and/or animation of said object/s.

For a good stereo walk-around viewing, the viewer should be about 2 feet from the curved screen, in this example.

This is because, in order to receive at least 1 different view per eye

Example 1)

lO-multiview images per 60 degree angle of observation Number of 60 degree subscreens in 360 degrees => 360 degrees/i 0 = 6 subscreens Number of cameras = 10 cameras per subscreen x 6 subscreens = 60 cameras; ie i camera every 6 degrees Typical 3D viewing distance = 211

Example 2)

5-multiview images per 10 degree angle of observation Number of 10 degree subscreens in 360 degrees => 360 degrees/i 0 = 36 subscreens Number of cameras = 5 cameras per subscreen x 36 subscreens = 180; ie i camera every 2 degrees Typical 3D viewing distance = 811 NOTE: the cameras can be real or virtual or a single re-positioned or scanned camera Figure 3 Explanation In figure 3 a number of schemes are shown to do with look-around projection.

items i,2 and 3 shows a single x,y mirror scanning system where item 3 is a y-rotation mirror scanning the projected image horizontally across the 3D projection backdrop (item 1).

Item 2 scans the image vertically causing the views to be drawn from top to bottom of item 1, the scanning system is controlled so that the correct multiview subscreen is placed in the correct 3D viewing position.

The mirrors can also be shaped or curved for wider or shaped throws.

Item 4 shows multiple scanning projectors for a higher resolution sphereical scan.

The more projectors used the higher the final image resolution, thus a scheme for multi-projectors is shown.

Item 6 shows a cylindrical look-around scanning system with item ii being a rotating base for the projector and scanner.

Items 7 and 8 depict schemes for the projector surface. ABC etc show multiview subscreens synchronised to be viewed at the correct scanning angle by a computer or such like.

Item 9 shows a sphereical subscreen arrangement Item 10 shows a scheme for the 2D encoded multiview image before subscreen projection.

The flat encoded image looks like a pineapple slice and can contain a full look-around or wrap-around subscreen multiview image.

There are many known or possible projection transform methods for converting wrap-around or look-around surface projections onto a flat plane. Some of these methods are well known to cartographers, a typical example being, the orange peel transform image of the earth that can be cur out and wrapped around a ball to look like a solid ans correctly proportioned miniture earth.

However, image resolution is lost for each added projected sector, included in the encoded multiview image.

So for the highest possible resolution, as many projectors as possible should be used.

Similar schemes can be envisaged for a wrap-around or immersive multiview systems.

Figure 4 Explanation Item 1 shows a back projected look-around scheme, the viewer stands in the center, each screen has a seperate projector, each screen can be multiview or 3D Item 2 Item 1 shows a front projected walk-around scheme, where the viewer stands outside, each screen has a seperate static projector, each screen can be multiview or 3D Projector clusters as in item 2 could also be used to project outside the screen periphery and have their light reflected back from the outside onto the screen or adjustment layer, thus allowing viewers to stand in the center and look around. The advantage being of being able to mount all the projectors in one location and a halfing of the projection space due the folding of the projection path.

Item 3 shows a look-around globe with physical barrier optically isolated pixels, so the the viewer can only see a narrow cone of emitted pixels rays.

Such an optically barriered, or constricted view, allows for an image of an areoplane for example to be walked around, as if it actually was there. The virtual object can be 3D, animated, interactive or prerendered.

Optical Isolation between lenses/subscreens Polar, Barrier, Lensing, Destructive Interference For the best multiview image, especially in a look-around system, the different views or even pixels should optically isolated from each other, reducing crosstalk between the projected rays or viewpoints.

This can be achieved is various ways, as follows: a) lensing, refractive or diffractive b) angle polarised filter c) physical barrier, or simple coliomators, an example of this is shown in (Figure 3, item 3), where individual views are mechanical or physically isolated from each other, by being sunk into tubes, giving a limited cone of vision to each tube.

d) waveguides, such as photo-optic cable which tends to emit from just the end of the cable e) reflective colimators, or condensers, which limit the emitted viewpoint.

Many displays and projection systems and multiview decoders have inherent limited fields of view, which may utilised to give the best possible multiview experience.

Adj ustment Layer Lens Explanation Where the AL is a lens, it can be used to correct fior pixel and focal misalignments.

It has been found that multiview lenses have a slight magnification which can ruin the pixel alignment to the decoder lens.

The AL which can also be a decode, ris this case can be inserted between the light emitter and the decoder to adjust optically said misalignment By rotating the ALand/or the decoder, the optimal alignment, may be found.

The AL may be placed on the viewing of reading side of the decoder as well The AL can also be modified by shape, position and rotation and be remote controlled The AL can be a refractive or diffractive lens or lens array, or holographic material or variable lens power remotely or manually controlled diffraction grating pinhole lens array or wavefront.

A high pitch lens array works well especially when the lens array is somewhat higher than the main decoder lens pitch.

Especially good as a correcting lens AL, is when the AL lenses or equivalent diffraction grating widths are less than a sub-pixel lens width.

This acts as a sub-lens to the main decoder and allows for pixel alignment, artifact elimination, focus and magnification and image quality adjustments Many combinations of 2 or more decoder layers can be used as ALs to vary optical alignment or other optical qualities, such as angle of view or reducing artifacts.

Multiple Adjustment Layers Explanation Using two or more lens arrays or lensing systems (including the decoder), it is possible to create variable lens qualities by combining layers and then rotating and/or moving them relative to themselves and other layers.

This works by in effect making new variable lenses or lens pitches and positions the light emitted in an adjustable manner.

By varying the way light spreads out from the primary image surface, using 1 or more adjustment layers, it is possible to use non-aligned lens arrays (for example) and convert them into a usable 3D viewing system In the process of designing this invention, it has been found, for example, that by rotating a higher pitch lens array relative to the final decoder and the primary image layer, it is possible to correct for lens-pitch alignment and other errors such as rainbow and black mask banding artifacts. This method also voids the need to scale or rotate the encoded image or cut or rotate the final decoder layer or screen.

Complex software repositioning and view compressions at sub-pixel level may also be avoided by such optical alignments of adjustment layers By way of an example, consider a scheme where the light emitter is a video projector, projecting a 3D encoded image onto a layer of semi-transparent back projection material.

The encoded 3D image is then passed through another layer, this layer being a high pitched lens array say Lines Per Inch (LPI) lenticular type material.

The light is further passed through a final viewing decoder at a lower pitch, more closely matching the projected pixel pitch, say 40 LPI (at 5-10 view/per lens).

By rotating and/or moving the 2 lens layers relative to each other and the projected encoded 3D image an optimal alignment to the pixel pitch and best 3D view is found.

Also, the adjustment layer may be contstructed of various materials, such as Reactive Mesogen (RM), which varies its refractive index with applied electric force field. An array of electronically controlled RM cells constitutes a Variable Lens (VL or Varilens).

A VL may be used to correct for pixel pitch alignment, focus, lens crosstalk, colour correction astigmatism, among other qualities.

The mirolens cell size should be substantially smaller than the source pixel size for this variable lensing to be effective across a wide range of use.

as an interveneing device for optical corrections of the source image before transmission through the 3D decoder screen.

A VL subtrate may be used directly as multiview 3D viewing device (3D decoder) or Although there is prior art in cylindrical lens ie: columnar wire driven AM control, AM control of non-cylindrical lens ie column and row, would appear to be a novel step as would control over various optical modifiers such as polarity, transparency colour, density or other optical properties, without wires, but with force fields, such as pressure, electric, magnetic and electromagnetic.

If the LCA pixel sizes are in the order of a wavelength of visible light, then the LCA can be used directly as a programmable wavefront, or as a diffactive lens controller.

Figure 5 Explanation Also such a LCA can be used to create alternate projected pixels or various patterns of polarised light as shown in item 3, where a processor variably controls the polarisation of any pixel of set of pixels The resultant multi-polarised image can be viewed with passive polar glasses In fact a standard LCD matrix maybe used as a programmable polariser, barrier, AL or decoder.

Alternatively Item 3 shows a secondary Digital Light Processor (DLP) type device being used as a variably controllable diffractive lens, orwavefront, or hologram.

Item 2 is the light emitter.

Item 1 is a laser or coherent light source writing a wavefront onto a photoreactive surface.For example, if the surface is reactive to UV only, a UV laser can variably control the surface hologram or wavefront or image The surface wavefont item 13 can be used a holographic display surface, or as a diffractive lens or as a optical controller/modifier for non-UV light from light source item 11, which can be a video projector or non-UV laser.

Some methods of optical modulation of an adjustment layer, are to change the refractive index, colour, polarity, transparency, using photoreactive or electric or magnetic or pressure sensitive chemicals or dyes.

Using the example of AM, given above a variable microlens array under optical control can be envisaged Methods for producing wavefronts, interference patterns and holograms are numerous and can include: physical methods such as varying the light path distance across a transparent layer using monochromatic or coherent light, shining monochromatic or coherent light through crystalline structures.

Electronic methods such as using an electronically produced image as an optical modulator.

Item 5 shows a variable seconday lens layer for making varaible sub-lens and control optical properties such as lens to pixel alignment and other factors as described above.

Items 7-10 shows a different scheme for writing a wavefront or using optical devices to control and modify optical surfaces.

In scheme (a) coherent light is written onto the surface of surface (item 8) The light is trasnsmitted from the viewing or front side of the system (item 9) the light travel through front surface (10) and through middle surface (12) (12) is a electronic shutter and reflector which is switched by processor (7) Surface (8) is photoelectric composed of sub-light wavelength insulated domains of photoelectric chemical of which there are numerous candidates.

Surface (12) is also an electric insulator Surface (10) contains a electric field sensing dye, so that a luminance copy of wavefront (8) is transmitted to(10).

To update stored wavefront (8), Shutter (12) is made transparent This system can also be considered as a holographic camera/recorder and playback device.

Figure 6 Explanation Item 1 shows a similar setup, with the lens curved the other way ie concave, this has the effect of being able to to block certain views of the displayed 3D image and could be used as an opto-isolator as disucussed above.

Item 5 shows a convex curved, shaped or flexible lens layer placed between the viewer and the decoder.

This alters/ adjusts the decoder optical properties so that an enhanced 3D effect is produced, making the image appear more like a real object.

Item 3 depicts a revolving screen synchronized by a proceesor (4) so that a different view is displayed at different angles, this could be used to display a walk-around image or3D object.

Item 7 shows a layer with an optically active substance being excited by 1 or more force-field generators, eg: electric oscillations, this can be used to set up optical images on the layer that can act as controllable diffractive lens, barrier screens, polar screens, refractive lens arrays optical mixers, and comparators Item 8 is another example of a look-around 3D display screen with orange-segment type optical barriers, these can be polar angle of view sensitive or simply a physical barrier.

Item 9 shows the orange-segment type optical barrier look-around 3D display, viewed from above, where the field of view of the viewer (10) is constrained by the barrier segments Hardware! Software Image Control It is possible that 1 or more adjustment layers is an LCD polariser matrix or a polariser matrix with pixels This for example can be used to variably stripe a layer for use as a barrier screen, or variably polarise a layer for use as a polar 3D controller.

Typical examples being a programmable optical barrier, or optical isolator.

Any of the Light Emitter images or adustment layer images made of a such an LCD or similar pixel control device can also be used to vary the image For example, the following image operations are possible: rescaling, rotation, keystone, distortion, perpective, brightness polarisation, 3D model wrap to 2D plane projection, contrast, pixel re-positioning or any other image transform 3D model wrap to 2D plane projection is a software method of transforming an image by wrapping around a 3D model. which is then projected back into the 2D plane.

This technique allows for very complex image transforms and is a powerful image adjustment tool.

Optical Computation Example For example, if a layer is an Liquid Crystal Array (LCA) and has a normal colour image of say a face on it, and another layer has the same face but in reverse colours,then white light shone through them both, will be occluded. This in effect is an optical comparator and can "find" the existence of an image for example, or be used to optically delete or subtract any desired image area.

Light Amplifying Layers Various methods are possible, an example being a photo-multiplier layer which can have the advantage of needing very little in the way of electrical connections or electronics and can work in much the same manner as the old TV tubes Micro-electronic & multi wired light amplifier layers are also possible, but require much more design and construction complexity.

Such light or photon amplifier layers may be required for generating the electric fields needed to store an optical image on an Electric field sensitive dye layer, as described previously, an example being the capture and storage of a wavefront.

Claims

CLAIMS1) A Variable Multiview System.Comprising of: one or more light emitting sources, one or more adjustment layers, through which are projected 1 or more 3D or multiview encoded images, and where one or more layers are used as decoders for viewing or reading the 3D or multiview encoded images.
(NOTE: the word "or" is assumed to mean "and/or") 2) A Variable Multiview System, as claimed in claim 1, wherein; any adjustment layer is partially opaque and carries a image projected from another source which is thenresizable or positionable or orientable, or curvable or distortable, manually, mechanically, digitally or by software or by remote control or is preset.
3) A Variable Multiview System, as claimed in claim 1, wherein; any layer adjustments are used to vary focus, viewing sweet-spot, image pixel to decoder alignment or any other controllable optical quality using layer adjustments as described in this invention.
4) A Variable Multiview System, as claimed in claim 1, wherein; the decoder is for viewing the image from different viewpoints 5) A Variable Multiview System, as claimed in claim 1, wherein; the decoder is a lens or lens array or barrier, or hologram or polarised pattern or structure.6) A Variable Multiview System, as claimed in claim 1, wherein; 1 or more layers or decoders is ariably polarisable in one or more directions 7) A Variable Multiview System, as claimed in claim 1, wherein; 1 or more layers or decoders is variably coated in polarised strips or areas which may be variably controllable or preset in this process.8) A Variable Multiview System, as claimed in claim 1, wherein; any layer is refractive, diffractive or transmissive or reflective 9) A Variable Multiview System, as claimed in claim 1, wherein; any adjustment layer is front or back projected 10) A Variable Multiview System, as claimed in claim 1, wherein; the 3D or multiview qualities of the 3D or multiview image are adjustable.11) A Variable Multiview System, as claimed in claim 1, wherein; the 3D or multiview qualities of the 3D or multiview image are adjustable, by varying the 3D or multiview encoded image alignment on any of the layers.12) A Variable Multiview System, as claimed in claim 1, wherein; the decoder layer, or any other layer is variable in its optical qualities, with electric, magnetic, electromagnetic, mechanical force or any kind of force field capable of controlling optical qualities in said layers or the decoder.13) A Variable Multiview System, as claimed in claim 1, wherein; the decoder layer, or any other layer is variable by digital or analogue control.14) A Variable Multiview System, as claimed in claim 1, wherein; the decoder layer, or any other layer is variable in shape, position, or rotation.15) A Variable Multiview System, as claimed in claim 1, wherein; 1 or more layers includes a semi-transparent light capturing protective coating laminated onto a clear material 16) A Variable Multiview System, as claimed in claim 1, wherein;, one or more layers is a semi-transparent light capturing coating which is preset or variable in transparency 17) A Variable Multiview System, as claimed in claim 1, wherein; 1 or more layers is coated with a polarising or non-polarising light capture coating or barrier, to be used as a stereo 3D viewing system using passive or active 3D glasses.18) A Variable Multiview System, as claimed in claim 1, wherein; the decoder layer is a flat or curved or shaped surface with adjustable or static optical isolation between viewpoint em itto is.19) A Variable Multiview System, as claimed in claim 1, wherein; the opto-isolator or opto-isolators are lenses, or holograms, or diffractors,or refractors,or reflectors,or opaque barriers, or wave guides or viewing angle dependent polansing filters or arrays of any of the opto-isolators or a any combination thereof 20) A Variable Multiview System, as claimed in claim 1, wherein; any of the layers or device sub-units is optically, electronically or otherwise variable or remotely controllable or preset in this process.21) A Variable Multiview System, as claimed in claim 1, wherein; 1 or more layers is an optical transforming device or lens 22) A Variable Multiview System, as claimed in claim 1, wherein; the light emitter incorporates a correcting lens 23) A Variable Multiview System, as claimed in claim 1, wherein 1 or more of the layers functions as an optical amplifier.24) A Variable Multiview System, as claimed in claim 1, wherein; 1 or more of the lens or layers is flat or shaped 25) A Variable Multiview System, as claimed in claim 1, wherein; any of the lens are diffractive or refractive or reflective 26) A Variable Multiview System, as claimed in claim 1, wherein; any decoder layer, structure, pattern or layout is variable or remotely controllable or preset in its functions.27) A Variable Multiview System, as claimed in claim 1, wherein; any lens structures or patterns or layouts are variable or remotely controllable or preset in its functions.28) A Variable Multiview System, as claimed in claim 1, wherein; any or all aspects of the layer structures, patterns or layouts are variable or remotely controllable or static.29) A Variable Multiview System, as claimed in claim 1, wherein; the decoder is integral to an adjustment layer 30) A Variable Multiview System, as claimed in claim 1, wherein; the light source, adjustment layer and decoder are in contact or apart from each other 31) A Variable Multiview System, as claimed in claim 1, wherein;, the light emitter or source is coherent, holographic, a wavefront, a display monitor or a projector 32) A Variable Multiview System, as claimed in claim 1, wherein; 1 or more light emitters is a display monitor.33) A Variable Multiview System, as claimed in claim 1, wherein 1 or more adjustment layers is a fresnel lens.34) A Variable Multiview System, as claimed in claim 1, wherein any of the adjustable qualities of the invention are controllable in realtime or preset in their functions.(Claims based on Processes shown in Figure 1) 35) A Variable Multiview System, as claimed in claim 1, wherein; any layer is optically, electronically or otherwise variable or remotely controllable.36) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is a shapable, positionable or deformable flat lens 37) A Variable Multiview System, as claimed in claim 1, wherein any of the light source images or adustment layer images are variably controllable under hardware or software, for rescaling, rotation, keystone, distortion, perpective, brightness, contrast, colour polarisation, scan clock frequency and phase, 3D model wrap to 2D plane projection. contrast, pixel re-positioning or any other image transform adjustment 38) A Variable Multiview System, as claimed in claim 1, wherein emitted light is projected onto a semi-transparent layer 39) A Variable Multiview System, as claimed in claim 1, wherein emitted light is projected onto a semi-transparent layer and the image on said layer is variable by variably moving, rotating, deforming reforming or shaping said layer in relation to the light emitter or the decoder and said variations can occur in or around any axis.40) A Variable Multiview System, as claimed in claim 1, wherein emitted light is projected via mirrors or other reflecting surfaces, where said reflecting surfaces can be moved rotated or shaped in any fashion, manually or by remote control or are preset in these processes.41) A Variable Multiview System, as claimed in claim 1, wherein emitted light is projected via mirrors or other reflecting surfaces, where said reflecting surfaces can be moved rotated or shaped in any fashion, manually or by remote control and redirection or folding of the optical path is achieved.(Claims based on Processes shown in Figure 2) 42) A Variable Multiview System, as claimed in claim 1, wherein emitted light is projected via rotating mirrors onto a walk-around or look-around layer or layers.43) A Variable Multiview System, as claimed in claim 1, wherein emitted light is projected via rotaing mirrors onto a walk-around or look-around layer/s and where the angular views are controlled by a processor which synchronises angle of projected image to the actual projected image.44) A Variable Multiview System, as claimed in claim 1, wherein emitted light is projected via a tractorix or tractorixs, a wave guide or wave guides or shaped reflective surface or surfaces.45) A Variable Multiview System, as claimed in claim 1, wherein emitted light is projected from 1 or more projectors via a tractorix or shaped reflective surface, allowing for image spread onto a curved or non-flat viewing surface.(Claims based on Processes shown in Figure 3) 46) A Variable Multiview System, as claimed in claim 1, wherein; the decoder includes 1 or more scanning subscreens 47) A Variable Multiview System, as claimed in claim 1, wherein; the decoder includes 1 or projectors.48) A Variable Multiview System, as claimed in claim 1, wherein; a solid state lensing or reflection system is used as part of a look-around projection display 49) A Variable Multiview System, as claimed in claim 1, wherein; the pre-projection encoded image is transformed for look-around or wrap-around projection 50) A Variable Multiview System, as claimed in claim 1, wherein emitted light is projected from 1 or more projectors via a tractorix or shaped or flat scanning reflective surfaces, allowing for image spread onto a curved or non-flat viewing surface.51) A Variable Multiview System, as claimed in claim 1, wherein emitted light is projected from 1 or more projectors via a tractorix or shaped or flat scanning reflective surfaces, with 1 or more light emittors being rotated on a base, allowing for image spread onto a curved or non-flat viewing surface.52) A Variable Multiview System, as claimed in claim 1, wherein 1 or more sub-screens are used to form a larger screen surface.53) A Variable Multiview System, as claimed in claim 1, wherein 1 or more sub-screens are used to form a larger screen surface and said surface can be columner, sphereiod, or any shape.54) A Variable Multiview System, as claimed in claim 1, wherein the encoded multiview or 3D image is transformed so that when projected and viewed on a curved or shaped surface or set of surfaces, its image is restored to a pre-transformed state.(Claims based on Processes shown in Figure 4) 55) A Variable Multiview System, as claimed in claim 1, wherein 1 or more light emitters or projectors are arranged so that a shaped or curved screen or set of screens are illuminated.56) A Variable Multiview System, as claimed in claim 1, wherein 1 or more light emitters or projectors are arranged so that a shaped or curved screen or set of screens are illuminated, via opto-isolators, so that views are constrained within a given field of view.57) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is electronically, or otherwise controllable.58) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is electronically, or otherwise controllable and is used as a barrier or variable lens.(Claims based on Processes shown in Figure 5) 59) A Variable Multiview System, as claimed in claim 1, wherein 1 or more light emitters are used to produce a wavefront or photon directing pattern on 1 or more layers.60) A Variable Multiview System, as claimed in claim 1, wherein 1 or more light emitters are used to produce a wavefront or photon directing pattern on 1 or more layers and such a pattern is used to control any optical qualities, which are controllable with such a method, such as refractive index, colour, polarity, transparency or pixel alignment.61) A Variable Multiview System, as claimed in claim 1, wherein 1 or more light emitters are used to produce a wavefront or photon directing pattern on 1 or more layers using photoreactive, electric, magnetic or pressure sensitive materials, chemicals or dyes.62) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is a controllable polar pattern or structure or shape or is preset in these functions.63) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is used to control pixel or image polarity 64) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is an electronically controlled polarised or standard barrier, diffractive lens or wavefront.65) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers are variably rotatable or positionable or are preset in these functions.66) A Variable Multiview System, as claimed in claim 1, wherein 1 or more lensing layers are variably rotatable or positionable and can be used to vary any optical property that is controllable with this method, including pixel alignment, image focus, beam width, and image slant.67) A Variable Multiview System, as claimed in claim 1, wherein any adjustment layer or decoder is controllable or shapable in any of the descibed ways or movable or rotatable relative to any other layer or surface, remotely or manually, or is preset in any of these functions.68) A Variable Multiview System, as claimed in claim 1, wherein the adjustment layer is movable, rotatable, shapable, in any direction or rotational angle remotely or manually 69) A Variable Multiview System, as claimed in claim 1, wherein the adjustment layer or layers are positioned before or after the decoder 70) A Variable Multiview System, as claimed in claim 1, wherein the viewing layer or all layers can rotate around the vertical or any other axis and different sychronised decoded images are shown at different angles of rotation, allowing for a multi-angle multiview display.71) A Variable Multiview System, as claimed in claim 1, wherein 1 or more emittors is used to write and store a wavefront on 1 or more of the layers.72) A Variable Multiview System, as claimed in claim 1, wherein 1 or more emittors is used to read a wavefront.73) A Variable Multiview System, as claimed in claim 1, wherein the stored wavefront isupdatable74) A Variable Multiview System, as claimed in claim 1, wherein the stored wavefront is readable or viewable with coherent or incoherent light 75) A Variable Multiview System, as claimed in claim 1, wherein the stored wavefront is electrically and/or optically isolatable from other layers by a controllable shutter method.76) A Variable Multiview System, as claimed in claim 1, wherein the stored wavefront is used as an optical comparator or computation device.77) A Variable Multiview System, as claimed in claim 1, wherein the layers are a holographic camera/recorder and playback device.78) A Variable Multiview System, as claimed in claim 1, wherein the resultant effect of optical control force fields applied to one or more layers is 1 or more dimensional, in structure.79) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is modulated with a force field, and the internal substance of the layer is composed of any suitable optically controllable substance.80) A Variable Multiview System, as claimed in claim 1, wherein one projected image is used to modify another image 81) A Variable Multiview System, as claimed in claim 1, wherein one projected image is used to modify another image by optically varying the lensing of an adjustment layer 82) A Variable Multiview System, as claimed in claim 1, wherein one projected image made by any means is used to modify another image 83) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is an electric or magnetic or electromagnetic or pressure controlled polarised or standard barrier, diffractive lens or wavefront.84) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is an optically controlled barrier, diffractive lens or wavefront 85) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is a controllable barrier, diffractive lens or wavefront (Claims based on Processes shown in Figure 6) 86) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is a curved or shaped or flat lens 87) A Variable Multiview System, as claimed in claim 1, wherein the viewing screen is rotatable and synchronised to display different views at different angles of rotation.88) A Variable Multiview System, as claimed in claim 1, wherein a flat, or look-around, or curved or shaped display is optically segmented, so as to have optically constrained fields of view.89) A Variable Multiview System, as claimed in claim 1, wherein optically modifying patterns are produced in 1 or more layers by the application of force fields along 1 or edges of the modifying layer.90) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is a shapable, positionable deformable lens by wave action of any other type of applied modulating action of any type or force.91) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is modulated with a force field, such as ultrasound, RF, magnetic, electric, electromagnetic or photonic or any other type of force producing the described optical effects.92) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is modulated with a force field, and the internal substance of the layer reacts to said force field by altering 1 or more of its optical properties in sympathy to said force field 93) A Variable Multiview System, as claimed in claim 1, wherein the optical control force field applied to one or more layers is applied from 1 or more directions 94) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is is variable in transparency, reflection or transmission or diffractivity.(General Claims) 95) A Variable Multiview System, as claimed in claim 1, wherein 1 or more of the adjusment layers operates as a optical computation device.96) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is a protective coating for other layers 97) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers serves to clamp 1 or more layers together.98) A Variable Multiview System, as claimed in claim 1, wherein any combination of descibed layers is used 99) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is a electric or magnetic or optical field controllable non-cylindrical lens.100) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is a semi-transparent surface.101) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is a semi-transparent surface and another adjustment layer is a lensing device 102) A Variable Multiview System, as claimed in claim 1, wherein the adjustment layer that is a semi-transparent surface able to be remotely or manually adjusted for transparency or is preset in this function.103) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is a refractive or diffractive lens or lens array 104) A Variable Multiview System, as claimed in claim 1, wherein 1 or more layers is a refractive or diffractive lens or lens array able to be remotely or manually adjusted for lens power or is preset in this function.105) A Variable Multiview System, as claimed in claim 1, wherein the adjustment layer is a decoder or is the main decoder.106) A Variable Multiview System, as claimed in claim 1, wherein;the distance between any of the layers and/or the light emitter is variable remotely or manually or is preset.107) A Variable Multiview System, as claimed in claim 1, wherein; the rotation between the decoder and adjustment layer or layers is variable remotely or manually or is preset.108) A Variable Multiview System, as claimed in claim 1, wherein;the rotation between the decoder and adjustment layer or layersis variable remotely or manually in any axis or is preset.109) A Variable Multiview System, as claimed in claim 1, wherein; rotation of any of the layers is variable remotely or manually in any axis and is used to control optical properties such as pixel alignment, emitted beam width and image slant or tilt or any other optical property capable of being varied by said process.110) A Variable Multiview System, as claimed in claim 1, wherein;the curvature between the decoder and adjustment layer or layers is variable remotely or manually in any axis.111) A Variable Multiview System, as claimed in claim 1, wherein;the curvature or rotation or position between the decoder and adjustment layer or layers and light emitter is variable remotely or manually in any axis or is preset in these functions.112) A Variable Multiview System, as claimed in claim 1, wherein;the optical pathway between the adjustment layer or layers or the viewing screen and light emitter is variable remotely or manually in any axis.113) A Variable Multiview System, as claimed in claim 1, wherein; multiview or 3D camera images are directly on indirectly (ie: realtime or otherwise) observable on the screen.114) A Variable Multiview System, as claimed in claim 1 wherein; deflectors or reflectors are curved or shaped.115) A Variable Multiview System, as claimed in claim 1 wherein; the viewing layers or viewing layers are curved or shaped under manual or remote control or are preset in these functions.116) A Variable Multiview System, as claimed in claim 1 wherein; any adjustment layer or adjustment layers are curved or shaped nder manual or remote control or are preset in these functions.117) A Variable Multiview System, as claimed in claim 1 wherein;ad]ustmentto any layer image is via software or hardware functions or any of the light emitter functions, such as zoom, image shift, keystone, rotation, scan clock frequency and phase, brightness, colour, perspective, digital, analogue or optical transforming processors or processes.118) A Variable Multiview System, as claimed in claim 1 wherein; the decoder is holographic, or barrier, or lens array or polar strips or polar arrays.119) A Variable Multiview System, as claimed in claim 1 wherein; 1 or more layers is holographic, a barrier, a lens array or made of polar strips or a polar pattern.120) A Variable Multiview System, as claimed in claim 1 wherein; 1 or more layers is an LCD or electronically controllable polarising matrix.121) A Variable Multiview System, as claimed in claim 1 wherein; 1 or more layers is patterned by monochromatic light shone through a varying optical path length material.