WO2002103456A2

WO2002103456A2 - Digital beam holographic display system

Info

Publication number: WO2002103456A2
Application number: PCT/US2002/018727
Authority: WO
Inventors: Dennis Solomon
Original assignee: Dennis Solomon
Priority date: 2001-06-16
Filing date: 2002-06-14
Publication date: 2002-12-27
Also published as: AU2002345668A1; WO2002103456A3

Abstract

An improved beam holographic display (12) with modifications for audience involvement (36) is disclosed which substantially increases the resolution and performance over the prior art by utilizing scanners (32) and a controller. Simplified techniques for construction and fabrication are also shown. Applications include art, computer design, entertainment, games, industry, medicine, military, and science.

Description

Digital Beam Holographic Display System

DESCRIPTION

Technical Field

This invention relates generally to display devices and more particularly to real time, beam holographic displays.

Background Art

Real time, three-dimensional digital holographic displays, suitable as replacements for home televisions and cinema projectors, have been the object of numerous inventions during the past forty years. Approaches may be distinguished between those employing traditional phase interference holography and those employing optical beams. Among the latter are microlenticular displays and various forms of common referred to as autostereoscopy.

The landmark digital holographic inventions and products are those of Benton at MIT and Kulick at the University of Alabama.. Those related to autostereoscopy are Sanyo Corporation and Cambridge University. Digital Beam Holographic Display System

All of the prior systems are expensive to construct, unsuitable for large displays, and limited in the resolution and fields of view. For these reasons, it is unsuitable for entertainment, marketing and game applications.

BRIEF SUMMARY OF THE INVENTION

The present invention discloses an improved method of creating a real time beam holographic visual display with reduced dynamic elements, higher resolution, more accurate performance, lower cost, lighter weight, and improved manufacturability.

Another object of the invention is an improved scaling for large venue presentations.

Another object of the invention is a reduction in the energy required to present a given image.

A further object of the invention is an improved safety and suitability for the application of the method of the present invention to entertainment devices and games.

The above and still further objects, features and advantages of the present invention will become apparent upon consideration of the following detailed disclosure of specific embodiments of the invention, especially when taken in conjunction with the accompanying drawings, wherein:

BRIEF DESCRIPTION OF THE DRAWING

Fig. 1 shows perspective view of the full screen embodiment of the present invention Fig. 2 shows block diagram of the components of projection embodiment of the present invention. Digital Beam Holographic Display System

Fig. 3 shows a perspective view of the transmissive projection embodiment of the present invention. Fig. 4 shows a cross sectional view of the reflective projection embodiment of the present invention. Fig. 5 shows a perspective view of the common scanner embodiment of the present invention Fig. 6 shows a side view of the transmissive projection, static Autoview embodiment of the present invention. Fig. 7 shows a top, optical path expanded view of the transmissive projection, static

Autoview embodiment of the present invention. Fig. 8 shows a side view of the transmissive projection, dynamic Autoview embodiment of the present invention. Fig. 9 shows a conceptual reflective embodiment of the Autoview reflector element of the present invention. Fig. 10 shows a front view of a digital integrated beam intensity control embodiment of the present invention. Fig. 11 Shows a detailed cross section of the transmissive, fresnel embodiment of the audience vertical field of view optics Fig. 12 shows a top view of a limited partition segment duplication audience field of view optics Fig. 13 shows an interlaced scan reflected optics

Fig. 14 shows a contrast enhancement embodiment of the present invention Fig. 15 shows a light source modulation application of the present invention to the Digital Beam Holographic Display System

performance system. Fig. 16 shows an enhanced registration for a moving responsive performance device. Fig. 17 shows a preferred embodiment having a simplified horizontal offset aperture structure Fig. 18 shows a preferred embodiment having a simplified offset diagonal aperture structure Fig. 19 shows a preferred embodiment having a simplified optical transform emitter structure Fig. 20 shows a preferred embodiment of the projection embodiment of scanning feedback components of the present invention, Fig. 21 shows a detailed perspective view of a projection optical transform embodiment of the present invention, Fig. 22 shows a detailed perspective view of a prismatic horizontal optical transform embodiment of the present invention, Fig. 23 shows a perspective view of a fiber optic optical transform embodiment of the present invention, Fig. 24 shows a perspective view of a swing type autostereoscopic wand, Fig. 25 shows a perspective view of a scanning embodiment of a swing type autostereoscopic wand, Fig. 26 shows a perspective view of gyro-stabilized wand, Fig. 27 shows a perspective view of a multiple radial view wand, Fig. 28 shows a perspective view of a vertical scan wand, Fig. 29 presents a top view of the registration embodiment with multiple receivers Digital Beam Holographic Display System

of the present invention, Fig. 30 presents a top view of the registration embodiment with multiple encoded transmitters of the present invention,

DETAILED DESCRIPTION OF THE INVENTION

The present invention discloses significant improvements in the field of beam holography - a technology under development by this inventor during the past two decades. Beam holography is defined as the recreation of the wavefront pattern of light by means of discrete beams in place of phase interference. Technology relating to optical, electronic, mechanical, acousto-optical, electro-optical, and computer component construction and fabrication discussed in the appended patent list and bibhographies are incorporated by reference.

Fig. 1 presents an important optical configuration applicable to all embodiments of beam holography necessary for a continuous image. This improvement may be incorporated in direct beam and all embodiments of scanning beam holography. Referring to Fig 1., the beam holography full screen 10 is comprised of an array of individual screen pixels 12, each of which projects a projection line 14 which scans across the audience observers 16, 18 at approximately 10 times per second or greater. The scan field of view ranges from scan limits shown as scan limit locations 20 to 22. The scan field of view is partitioned into individual scenes, two of are shown as corresponding to feedback sensors 26, 28. Each projected line and scene partition has an arc length less than the inter-ocular distance of approximately 2 inches at the maximum holographic viewing distance. Digital Beam Holographic Display System

All number of novel and known scanning technologies may be employed to achieve this optical improvement. They include mechanical resonant or rotating mirrors, acousto- optic, electro-optic, or peizo-optic scanners, resonant displaced light sources and other known scanning methods. MEMS fabrication may be incorporated. A summary of techniques is discussed throughout. It may be understood that an alternative construction may substitute moving pixels 12 for static pixel 12 and scanner mechanisms 52 in all embodiments.

In all the discussed embodiments, the optical components may be substituted by reflective or transmissive elements, using fiberoptic, MEOMS, HOE, or micro-optic fabrication technologies known in the field.

The scanning method shown presents the audience with proper horizontal parallax. Vertical parallax may be presented by incorporating additional, independently modulateable domains, which project a uniquely composed projection fine 24 above or below the principal line 14. The additional domains by additional discrete hght sources with each pixel 12, or a vertical scanning mechanism.

In order to achieve high registration accuracy in a high-resolution system, partition feedback sensors 26, 28 are placed in the path of the projected beam. The sensors may be responsive to an infrared or other non-visible beam. The sensor output is transmitted to the image controller 30, which modulates the pixel 12 emissions. Various sensor methods may be employed including discrete partition sensors 26, 28, sensors at the scene field of view limits 20, 22 or other configurations. When employing discrete scene sensors the signal may be used to directly update the scene from an image buffer either in an incremental or absolute mode. When employing sensors at the scene field of view, the Digital Beam Holographic Display System

period between signals may be divided into partition periods, and the timing counter used to update the scene from an image buffer.

Fig. 2 presents a block diagram of the components of the present invention. Each screen 12 is comprised of one or more pixel light sources 38, 40, and a horizontal scanner 32. A vertical scanner 34 may be common to all pixels 12 or individually incorporated. An audience vertical field of view optical component 36, which vertical expands the pixel into a projection line 14 may be included. Embodiments incorporating a vertical field of view optical component 36 generally project a discrete point onto the vertical field of view optical component 36. Examples of the construction include a horizontally oriented lenticular screen, holographic optical elements, micro-fresnel or other micro-optical arrays.

Fig. 3 presents a perspective view of a linear pixel array embodiment of the present invention. Light source 38 is modulated by high-speed shutter 42 horizontal displaced by horizontal scanner 32, vertical displaced by vertical scanner 34 and focused upon audience vertical field of view optics 36. Scan rates and limits may be dynamic modified by the observers), providing varying horizontal or vertical resolution or partitions.

Fig. 4 presents a side view cross section of a linear screen pixel array, reflective embodiment of the present invention. A horizontal array of screen pixels 12 with internal horizontal scanning directs its beams 46, 48 onto a rotating vertical scanner 34. The beams 46, 48 are directed to the display redirecting reflector 44 and onto the audience field of view optics 36. It may be understood that the audience vertical field of view optics 36 may be incorporated into, or affixed to the display redirecting reflector 44. Alternatively, the display redirecting reflector 44 may be incorporated into the view optics 36 as a reflective, refractive, or transmissive optical element. The vertical scanner 34 may be a rotating Digital Beam Holographic Display System

polygon, resonant mirror, acousto-optic, electro-optic, MEMS or other known combination of transmissive or reflective scanning devices. For a high resolution, 1024 vertical line, 128 partition presentation, at the ergonomic 72 Hz refresh rate, the calculations of pixel modulation and scan frequency are as follows:

Pixel Modulation (9.4 Mhz) = Refresh rate (72 Hz) X Vertical Lines (1024) X Partitions (128) This rate may be reduced by adding additional rows of the linear screen pixel arrays which project onto adjacent or interlaced vertical domains.

The perceived pixel intensity is the pixel flux X surface solid angle projection (surface (double) integral X Efficiency Factor / pixel area at the observer. This is approximately the same as if the pixel was placed in a static 2D screen.

Fig. 5 presents a perspective view of the static Autoview reflector embodiment of the present invention. The purpose of the Autoview reflector invention is to eliminate the multiple, individual high frequency horizontal scanning and control elements required by the prior embodiments. The general components and functions are the same as in Fig. 4, with the linear array of integrated pixels 12 being replaced by an array of switchable, static pixels 12 whose output is directed at a common Autoview positioning reflector 52 and onto the Autoview reflector 50. The beams 46, 66 are then directed to the vertical scanning reflector 34, the display redirecting reflector 44 and the audience vertical field of view optics 36 as before.

Fig 6 presents a cross sectional side view of the compact passive Autoview embodiment of the present invention. This embodiment may be configured in the direct transmissive structure as shown or reversed to include the display redirecting reflector 44. The beam 46 emanates from the pixel array 12 onto a first Autoview positioning reflector 52 Digital Beam Holographic Display System

where it is directed onto the compact passive Autoview positioning transfer reflector 60. Next the beam 46 is directed to the vertical scanner 34 and then to the compact vertical scanner transfer reflector 62, the Autoview positioning reflector and the audience vertical field of view optics 36. In operation the Autoview positioning reflector is a high frequency scanner (~ 16 KHz) and the vertical scanner 34 the low frequency (~ 72 Hz ) scanner.

Fig. 7 presents an unfolded optical path top view of the compact passive Autoview embodiment of the present invention. It may be seen that active components 52 and 34 may be substantially smaller than the apparent width of the useable audience optics 36.

Fig. 8 presents a transmissive, dynamic Autoview embodiment of the present invention. This configuration integrates the vertical scanner 34 into a dynamically displaced Autoview reflector 50.

Fig. 9 presents a perspective view of reflective embodiment of the Autoview optics of the present invention. The Autoview reflector 50 is constructed of Autoview reflector elements 58 which are configured to cause the input beams 46 and 66, and those intermediate, to deflect in different directions, dependent upon the spatial position on the Autoview element 58. A corresponding sensor beam 56 acts upon the sensors 26, 28 to provide precise feedback of the spatial position of the input beams 46. It may be understood that the Autoview element 58 may be a continuous and incremental reflective surface, or in the reflective or transmissive embodiment constructed of a continuous or incremental holograms, holographic optical elements (HOEs), micro-optics, fresnel, or other known static elements.

It may be understood that while active Autoview reflector elements such as micromirrors, acousto-optic, or electro-optic beam scanner may be employed, they represent Digital Beam Holographic Display System

a distinct, separate and differentiable invention from the embodiments in the present application.

Fig. 10 presents a front view of a digital integrated beam intensity control embodiment of the present invention. Each static pixel light source 12 is constructed of an array of individually controllable emitters 70 arranged as group 72, 74, shown in Fig. 10 as a linear array having the sequential binary intensity values of 1, 2, 4, 8, ... for each primary or modulating color. The image controller 30 sends a signal to the emitters 70 which is the sum of the composite value of ranging the full scale - 0-15 in the example for each color. Combiner optics, not shown, integrates the emitter output for each group 72, 74. This improved, temporally precise, pixel hght source permits the use of digital shutters and logic and eliminates the need to register the different primary colors on the appropriate pixel.

Fig 11 presents a detailed cross section of the transmissive, horizontal lenticular embodiment of the audience vertical field of view optics 36, constructed of a transparent optical material with small horizontal lenticular lenslets 76 which expanded the input beam 46 into a vertical fine 14, visible to audience members 16, 18 at different heights. Other well-know transmissive and reflective optical configurations and screens may be used to accomplish the same function.

Fig. 12 presents a top view of a limited partition segment duplication audience field of view optics, which reduces the number of rendered views by replicating a set of views to different sections of the audience. The replication optics 80 is generally, but not essentially, incorporated into the audience field of view optics, and receives the beam input 82, 84, 86 on the receiving optics 78 and replicates each view one or more times. The replication optics 80 projects the beams 82, 84, 86 spatially intact to different sections of the audience. Digital Beam Holographic Display System

There are many alternative and well know prismatic, reflective, HOE, and micro-optical configurations which may be employed.

A distinct, recognizable, section boundary beam 81 may be projected to notify the audience that it is positioned on a section boundary. One example would be a dark gray line.

Fig. 13 presents an integrated, interlaced, Autoview scanning system where the one or more modulated hght sources 38 project a scanning beam 100, 102 at an interlaced optical an array of one or more input aperture rows 98 constructed of a multiplicity of input aperture slots 90, 92, 94, 96 with the output beams. 100, 102 representing the integrated scanner output in any of the aforementioned embodiments or directly scanning across the audience. Non-visible registration beams may be included.

Fig. 14 presents a contrast enhancement embodiment of the present invention. Projection systems generally, and reflective systems in particular, suffer from image degradation due to the effects of stray ambient light. The optical paths of the present inventions lend themselves to a solution by overlaying the audience field of view optics 36 with a polarized film 68. Both transmissive and reflective embodiments benefit from the use of elliptically polarized films, though linear polarized films may be of considerable advantage on reflective embodiments.

An alternative construction employs a contrast enhancer constructed of an array of horizontal louvers 70, either discrete or an embedded microlouver film.

Fig. 15 presents the light source modulation apphcation of the present invention to the audience responsive device system. The present invention may be further enhanced by the integration as the multichannel projection controller for this inventor's co-pending Digital Beam Holographic Display System

audience responsive device system. The controller device is constructed of a hght and signal source 38 which may be in the visible or non-visible (uM, IR, UV) electromagnetic spectrum, a signal modulator 202 which imparts a carrier frequency to the signal source, and a directional shutter array 204 which may be any shuttering device including but not limited to micromirrors, LCDs, FLCDs, or other known technologies. The functions of 38, 202 and 204 may be incorporated as an array of LEDs or other elements capable of a variable, high frequency modulation, In operation, the visual image of the present invention, is augmented or replacement by a signal image of directional beams 46, 48 which activate audience responsive devices 200. The responsive devices 200 may include a signal receiver 208, a power source, computer, memory, hght, audio, tactile, motion, scent, and other responsive components. The transmitted signal may be a simple on-off, or a complex message received and stored for future response by the device's 200 computer and memory. For example, an entire MP3 song may be downloaded and scheduled to play 10 minutes after the transmission.

The signal carrier frequency modulator 202 may be used in conjunction with a discriminator circuit to reduce signal transmission errors. The frequency may be dynamically changed to select different programs, or members of the audience.

Fig. 16 presents a responsive performance system device 200 of the present invention. The responsive device may take many forms including but not hmited to a simple on-off LED candle, a more complex magic wand with lights and sound, a music baton, a paper sticker, a campaign button, earrings, tiaras, hoops, balls, yo-yos, etc. The example shown in Fig. 16 is a flag or wand-type device. The flag device 200 has a handle 220, a flag, banner, pennant, or offset display 222, one or more light emitting elements 206, Digital Beam Holographic Display System

optionally an audio speaker 224, scent, vibrator, water spout, or other responsive method, a signal receiver 208, and an controller circuit 210. The responsive effect in a wand type device may be enhanced by having visual elements 206 on both sides of the banner 222 and a circuit to identify a change in the direction and start of the swing, which initiates a sequential patterned display of the hght from the elements 206. One example is shown where a circuit is changed by the interaction between contacts 214 on a member 226, which rotates about the handle 220, and contacts 214 on the handle 220. A firmware circuit, which times the relative period between contacts to determine the swing direction and frequency, may be employed. Alternative known methods include but are not limited to position locators, resistance and capacitive sensors. A spring-loaded switch or sensor 216, 218 may be provided to detect the increase in tension between the banner 222 and the handle 220 as the device 200 is waved.

Fig. 17 shows a simplified embodiment of the integration of the Autoview transform optics where a series of subpixel light sources 110-112 are focused to exit through virtual screen pixel 114, 116 aperture and optics which may be scanned by vertical scanner 34 and projected as shown in Fig. 1- 16. By offsetting virtual screen pixels 114, 116 a two dimensional screen pixel array 12 may be achieved. The virtual screen pixels 114 may include a optical element which collimated or converge the bema output. While shown as a horizontal to vertical transform, any angular configuration including vertical to horizontal or diagonal may be employed. A row of virtual screen pixels 118 may be used as a reference beam.

Fig. 18 shows another simplified embodiment of the integration of the Autoview transform optics where a series of subpixel light sources 110-112 are focused to exit through Digital Beam Holographic Display System

virtual screen pixel 114, 116 aperture and optics which may be scanned by vertical scanner 34 and projected as shown in Fig. 1- 16. By focusing the subpixels 110,112 about a diagonal array 120 a two dimensional screen pixel 12 may be achieved.

Fig. 19 shows another simplified embodiment of the integration of the Autoview transform optics where a series of subpixel fight sources 110-112 are focused to exit through virtual screen pixel 114, 116 aperture and optics which may be scanned by vertical scanner 34 and projected as shown in Fig. 1- 16. Details of the transform optics 126 is shown in Figs. 21-23.

Fig. 20 shows a projection embodiment of the present invention employing a projector 120 to produce an array of subpixel hghts 110, 112 are focused to exit through virtual screen pixel aperture and optics 114, 116. High frame rate projectors, such as FLCD and digital micromirror systems (such as Texas Instruments DMD) may be employed.

Fig 21 shows the projection mechanism of another preferred embodiment of the present invention wherein the autostereoscopic image 14 is presented through one or more transmissive or reflective sector screens, ln operation, a series of two dimensional images (62) 124 of multiple columns 124A, B, ..., are projected from projector 120 which may be a high speed shutter array such as FLCD, deformable mirror, Texas Instruments DLP or arrays of LEDs, Lcos, FEDs, a scanned system or other such technology. The image columns 124A as transformed in horizontal line 124A' by the transformation optics 126. As shown the column 124A is collimated by lens 128, rotated by dove prism 130, expanded by lens 132 and scanned vertically by scanner 34 onto screen 10 which may include a vertical expander in the form of a horizontal lenticular array, HOE or other similar optic 76. The Digital Beam Holographic Display System

detail construction of each element is disclosed in my co-pending apphcations.

Fig. 22 shows an embodiment of the transformation optics 126 having a beam condenser 136, a vertical angle prism 138, a lateral angle prism 140, an horizontal angle prism 142 and a beam expander 132. The embodiment may also be constructed from mirror surfaces.

Fig 23 shows an embodiment of the transformation optics 126 using a array of fiber optics 92 which are twisted the required angle. Abeam expander 124 is shown.

Figures 21-23 disclose embodiments of column transform and rotating optics of which many alternative forms are well known to those skilled in the art and searched under the heading "image rotating optics" and found in the principal optical libraries of prisms and lens arrays. These alternative forms may be employed in the present invention and in the related co-pending apphcations that include column rotating transformation optics.

Figure 24 presents a perspective view of the three dimensional embodiment of the invention having a handle A10, a tube A12, a power supply A14, a microcomputer A20, a motion related switching mechanism A30, an autostereoscopic optical element A40, and a multiplicity of light emitting elements A50. In operation, the timing and pattern produced by the light emitting elements A50 are controlled by the microcomputer A20 which processes the signal received from the motion-related switching mechanism. The autostereoscopic image A60, A60' is viewed by the observer's A70 left A72 and right A74 eyes through the autostereoscopic optical element A40. A complete image represented by column A62, A64 is produced by swing the tube A12 in a cyclical pattern across a segment of the field of view of the observer A70. A typical letter image contains A5 column per letter Digital Beam Holographic Display System

or about 50 columns per word. Graphic images may be produced. The pattern, timing and basic construction of the autostereoscopic optical method and elements are well-known to those skilled in the art.

In the prior art, and important to a high performance embodiment of the present invention, the cycle is initiated and registration is maintained by microcomputer processing the signal from the motion-related switching mechanism. It may be understood that the present invention includes the simpler embodiments which do not have a motion-related switching mechanism and function at a preprogrammed rate.

The output A60 is shown as a beam but may be fan shaped (a vertical line) thereby permitting observers above and below to view the same image.

Figure 25 presents a perspective view of a preferred embodiment which reduces the cost of construction of the display component of the present invention. The improvement replaces the direct view array of light emitting elements A50 in Figure 17 with a high frequency scanning mechanism A80 to redirect the output from the light emitters A50 to produce an indirect visual image A52' on a screen A56. The scanning mechanism may be of any type including but not limited to the mechanical displacement of the emitter output A50, resonant voice-coil, piezo, acousto, or electro-optic reflective or transmissive optics.

The screen A56 may be transmissive A62 or reflective A60 and vertically dispersive by a lenticular or corrugated optic A206.

The scanner A80 is shown as a one-dimensional horizontal device displacing the image of the array of hght emitting elements A50 across the diameter of the tube A12. Additionally, the scanner A80 may also include a cychcal vertical displacement of the image of the array, either as an integrated system as is well known in the MEMS scanner Digital Beam Holographic Display System

literature and prior art, or as dual scanner systems such as is manufactured by Cambridge Technologies, Inc. Many scanner mechanisms and combinations are known to those skilled in the art and may be employed in the present invention. For example, the cyclical displacement of the array apertures or condensing optics may also be used.

It may be understood that these embodiments may be powered from the optical energy of the data image using a photocell or fluorescent dyes. For dayhght operation, reflective chromatic emitters such as EPAPER and other novel technologies may be used.

Figure 26 presents a perspective view of a preferred embodiment which maintains a geo-stationary orientation as the device is moved across the field of view, thereby enhancing the registration of the distinct projected autostereoscopic views to the observers. A gyroscope A90 is affixed to the autostereoscopic tube A12 whose attachment A16 to the handle A10 which is freely rotatable about an pivot A18. The generally perpendicular axis of rotation of the gyroscope A90 to that of the axis of rotation of the autostereoscopic tube A12 provides a stable plane of reference. Also presented in an alternative mechanism based on the ambient magnetic field where a magnetic field detector A91 sends a position signal to a motor controller which acts upon the optical elements of the autostereoscopic tube A12 to maintain a stable orientation.

Figure 27 presents a multiple autostereoscopic element A40, A40' embodiment which permits observers from substantially different radial positions to view a single wand.

Figure 28 presents a vertical scan embodiment similar in function to Figure 25 where the scanning mechanism A80 receives the output from emitters A50 and vertically projects the scanned image A52'.

Figure 29 presents a top view of the registration embodiment of the present Digital Beam Holographic Display System

invention with multiple registration receivers 302, 306. This improvement overcomes the difficulty of registering the respective eye views of the independent display devices or wands A12 by providing an external reference 300 which may be an encoded directional emitter in the visible or non-visible spectrum. One example is an infrared signal. The aperture A40 limits the registration of the signal to one receiver 306 of the receiver array 302 in the device A12 at any one time. As a result, each device A12 "knows" its orientation in relation to the reference emitter 300 and may adjust the presentation of the image on the visible emitters A50 accordingly.

The registration may be used to control other effects including but not limited to sound, motion, smell, and texture.

Figure 30 presents a top view of the registration embodiment of the present invention with multiple registration transmitters 312, 314, 316 and a hmited number of directional registration receivers 306. Each registration transmitter may encoded a signal or present a time differential emission in relation to a global signal from projector 90.

The embodiment of the invention particularly disclosed and described herein above is presented merely as an example of the invention. Other embodiments, forms and modifications of the invention coming within the proper scope and spirit of the appended claims will, of course, readily suggest themselves to those skilled in the art.

Digital Beam Holographic Display System

Figure List Descriptions

10 Full Screen

12 Screen Pixel

14 Projection Line

16 Observer I

18 Oberver II

20 Scan Limit Left

22 Scan Limit Right

24 Projection Line Divided for Vertical Parallax

26, 28 Partition Feedback Sensors

30 Controller

32 Horizontal Scanner

34 Vertical Scanner

36 Audience Vertical Field of View Optics

38 Pixel Light Source I

40 Pixel Light Source II

42 High Speed Shutter

44 Display Redirecting Reflector

46 Beam I

48 Beam II

50 Autoview Reflector

52 Autoview Positioning Reflector

54 Dynamic Positioner Mechanism

56 Sensor Beam

58 Autoview Reflector Element

60 Compact Passive Autoview Positioning Transfer Reflector

62 Compact Vertical Scanner Transfer Reflector

66 Beam III

68 Polarized Contrast Enhancer Film

70 Louvered Contrast Enhancer Film

76 Horizontal Lenticular Lenslets

78 Receiving Optics

80 Replication Optics 82, 84, 86 Beam Input

81 Section Boundary Beam

90. 92. 94. 96 optical input aperture slots 98 Input Aperture Rows 100, 102 Output Beams

110 Subpixel Light Source I 112 Subpixel Light Source II

120 Projector

122 Projection Screen Optics Digital Beam Holographic Display System

124 image columns 126 transform optics 128 transform lens I 130 dove prism 132 transform lens II 136 beam condenser 138 angle prism I 140 angle prism II 142 angle prism III 144 fiber optics

200 Audience Responsive Device

202 Signal Modulator

204 Directional Shutter Array

206 Light Emitting Elements

208 Signal Receiver

212 Handle Contacts or Sensor

214 Banner Contacts or Sensor

216, 218 Switch or Sensor

220 Handle

222 Banner

224 Audio Speaker

226 Lower Banner Rotating Member

300

APPENDED PATENT & BIBLIOGRAPHY REFERENCE

US

6239830

6233071

6231194

6219435

6213606

6212007

6211976

6211848

6183088

6178043

6178018

Claims

Digital Beam Holographic Display SystemCLAIMS What I claim is:

Claim 1. A three dimensional, beam holographic display system comprising: a) lighting emitting means, b) computer means controlling said light emitting means, c) optical transform means for producing a multiplicity of beams directed to each eye of the observer

Claim 2. A three dimensional, beam holographic display system in accordance with claim

1 , further comprising: a) a contrast enhancing polarizing screen.

Claim 3. A three dimensional, beam holographic display system in accordance with claim

1, further comprising: a) Optical transform means having an autoview optical transform element.

Claim 4. A three dimensional, beam holographic display system in accordance with claim

1, further comprising: a) Optical emitter means having a multiplicity of binary stepped subelements.

Claim 5. A three dimensional, beam holographic display system in accordance with claim

1, further comprising: a) An optical transform means having an offset reflector.

Claim 6. A three dimensional, beam holographic display system in accordance with claim

1, further comprising: a) An optical transform means having a diagonal offset virtual apertures.

Claim 7. A three dimensional, beam holographic display system in accordance with claim

1, further comprising: a) An optical transform means having an optical vertical to horizontal linear transform optics.

Claim 8. A three dimensional, beam holographic display system in accordance with claim

1, further comprising: a) A projector means for creating a subpixel image. Digital Beam Holographic Display System

Claim 9. A three dimensional, beam holographic display system comprising: a) A handheld three dimensional display means for presenting at least one element of a three dimensional display,

Claim 10. A three dimensional, beam holographic display system in accordance with claim 9, further comprising: a) A three dimensional display means for presenting at least one element of a three dimensional display, b) A coordinating means for controlhng and coordinating a multiplicity of portable displays.

Claim 11. A three dimensional, beam holographic display system in accordance with claim 9, further comprising: a) A handheld three dimensional display means for presenting at least one element of a three dimensional display, b) A scanning means for presenting the three dimensional image.

Claim 12. A three dimensional, beam holographic display system in accordance with claim 1, further comprising: a) A handheld three dimensional display means for presenting at least one element of a three dimensional display, b) An external reference means for controlling and registration a multiplicity of said devices.

Digital Beam Holographic Display System

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