Holographic display system for motor vehicles

Abstract

A holographic display system for a motor vehicle includes a light source for generating a coherent light beam and a spatial light modulator (SLM) having a two-dimensional array of pixels. The two-dimensional array of pixels modulates the coherent light beam to generate a plurality of sub-frames, each sub-frame being associated with one of a plurality of partial fields of view. The system further includes a scanner for directing the sub-frames onto an associated sub-patch of a display surface. The system further includes a computer having a memory including instructions such that a processor is programmed to control the two-dimensional array of pixels of the SLM to generate the sub-frames. The processor is further programmed to control the scanner to direct the sub-frames onto the associated sub-patch of the display surface and to display a reconstructed image within a full field of view, which includes each of the partial fields of view.

Description

Technical Field

[0001] This disclosure relates to a holographic display system for motor vehicles, and more specifically to a holographic display system that controls a spatial light modulator to improve the resolution of a reconstructed image and enlarge the associated eye frame size. Background Technology

[0002] Automakers are constantly researching and improving the resolution and eye-bezel size of augmented reality (AR) head-up displays (HUDs). The eye-bezel of an AR HUD is the area of ​​the display that the driver can view. Modern luxury or high-end vehicles may include AR HUDs with spatial light modulators (SLMs), which modulate light according to a fixed resolution or spatial (pixel) mode. SLMs are typically used to control incident light in amplitude-only, phase-only, or combinations thereof. SLMs generate images through the diffraction or redistribution of light, rather than blocking light as in traditional projection systems. SLMs can operate in reflective modes (such as liquid crystal on silicon (LCoS)) and transmissive modes (such as glass-to-glass). Still in other instances, an SLM may be a MEMS mirror SLM or other suitable SLM. SLMs can provide high-speed phase or amplitude modulation, efficient operation, and user-friendly graphical software interfaces.

[0003] A traditional solution to improve AR HUD resolution and increase the associated eye frame size is to increase the resolution of the SLM (Surface Mount Technology). Depending on the performance requirements of the field of view and eye frame, an SLM with a resolution exceeding 4K may be needed to provide a commensurate resolution for the AR HUD. The use of multiple SLMs has also been proposed to increase the viewing angle and screen size of the holographic display system. However, increasing the resolution of the SLM and using multiple SLMs increases the cost, weight, and complexity of the AR HUD.

[0004] Therefore, while existing holographic display systems have achieved their intended purpose, a new and improved holographic display system is needed to address these issues. Summary of the Invention

[0005] According to several aspects of this disclosure, a holographic display system for a motor vehicle is provided. The system includes a light source for generating a coherent light beam and a spatial light modulator (SLM) comprising a two-dimensional pixel array having SLM resolution, which diffracts the coherent light using holographic encoding. The two-dimensional pixel array modulates the coherent light beam to generate a plurality of subframes, each subframe associated with one of a plurality of partial fields of view. The system also includes a display surface having a plurality of sections. The system further includes a computer having a processor coupled to the light source and the SLM. The computer also includes a memory with instructions such that the processor is programmed to at least control the two-dimensional pixel array of the SLM to generate subframes for displaying a reconstructed image across the entire field of view, wherein the entire field of view includes each partial field of view.

[0006] On the one hand, the reconstructed image on the display surface has a total image resolution, and the total image resolution is higher than that of the SLM.

[0007] On the other hand, the processor is also programmed to control at least the SLM to guide subframes onto subblocks so that the subframes are tiled adjacent to each other without overlapping.

[0008] On the other hand, the total image resolution is equal to the SLM resolution multiplied by the number of sub-blocks displayed in the sub-frame.

[0009] On the other hand, the two-dimensional pixel array of the SLM has an SLM eye frame size, and the display surface has a display surface eye frame size, which is equal to the SLM eye frame size multiplied by the reciprocal of the ratio of a portion of the field of view to the full field of view of one of the sub-blocks.

[0010] On the other hand, the system also includes a scanner for guiding subframes onto one of the relevant sub-blocks on the display surface. The processor is coupled to the SLM and programmed to control the scanner to guide subframes onto one of the relevant sub-blocks on the display surface to display the reconstructed image across the entire field of view, where the entire field of view includes each partial field of view. The processor is also programmed to control at least one of the scanner and the SLM to guide subframes onto sub-blocks arranged in multiple rows and columns on the display surface.

[0011] On the other hand, the processor is further programmed to control the SLM to dither subframes onto subblocks at an angle, such that each subframe has an enhancement portion, and the enhancement portions of the subframes overlap each other on the display surface. The enhancement portions of the relevant subframes have a higher perceptual resolution than the SLM resolution.

[0012] According to several aspects of this disclosure, a motor vehicle includes a body defining a passenger compartment and a plurality of glass panels surrounding the passenger compartment. The glass panels include at least one of a windshield, a rear windshield, a sunroof, and a plurality of windows surrounding the passenger compartment. The motor vehicle also includes a holographic display system coupled to the body. The system includes a light source for generating a coherent light beam and a spatial light modulator (SLM) having a two-dimensional pixel array having SLM resolution, which diffracts the coherent light using holographic encoding. The two-dimensional pixel array modulates the coherent light beam to generate a plurality of subframes, each subframe being associated with one of a plurality of partial fields of view. The system also includes a display surface having a plurality of sub-blocks. The system also includes a computer having a processor coupled to the light source, the SLM, and a scanner. The computer also includes a memory having instructions such that the processor is programmed to control the two-dimensional pixel array of the SLM to generate subframes. The processor is also programmed to control the scanner to guide the subframes onto the corresponding sub-blocks of the display surface to display a reconstructed image within a full field of view including each partial field of view.

[0013] On one hand, the display surface is part of at least one of the windshield, rear windshield, sunroof, and window.

[0014] On the other hand, the system also includes a combination glass panel installed in the cabin, and the display surface is part of the combination glass panel.

[0015] On the other hand, the light source is a laser, and the SLM is one of liquid crystal on silicon (LCOS) SLM and MEMS mirror SLM.

[0016] On the other hand, the reconstructed image on the display surface has a total image resolution, and the total image resolution is higher than that of the SLM.

[0017] On the other hand, the processor is also programmed to control at least the SLM to guide subframes onto subblocks so that the subframes are tiled adjacent to each other without overlapping.

[0018] On the other hand, the total image resolution is equal to the SLM resolution multiplied by the number of sub-blocks displayed in the sub-frame.

[0019] On the other hand, the two-dimensional pixel array of the SLM has an SLM eye frame size. The display surface has a display surface eye frame size, which is equal to the SLM eye frame size multiplied by the reciprocal of the ratio of a portion of the field of view of one of the sub-blocks to the full field of view produced by the SLM.

[0020] On the other hand, the system also includes a scanner for guiding subframes onto one of the relevant sub-blocks on the display surface. A processor is coupled to the scanner and programmed to control the scanner to guide subframes onto one of the relevant sub-blocks on the display surface to display the reconstructed image across the entire field of view, where the entire field of view includes each partial field of view. The processor is also programmed to control the scanner to guide subframes onto sub-blocks arranged in multiple rows and columns on the display surface.

[0021] In another aspect, the processor is further programmed to control the SLM to dither subframes onto subblocks at an angle, such that each subframe has an augmented portion. The augmented portions of the subframes overlap each other on the display surface, with the augmented portions of the relevant subframes having a perceptual resolution higher than that of the SLM.

[0022] According to several aspects of this disclosure, a method for a holographic display system for operating a motor vehicle is provided. The system includes a light source and a spatial light modulator (SLM) having a two-dimensional pixel array having SLM resolution, the pixel array being holographically encoded to diffract coherent light. The system also includes a display surface having a plurality of sub-blocks, a scanner, and a computer having a processor and memory. The method includes generating a coherent beam with the light source. The method further includes modulating the coherent beam with the SLM to generate a plurality of subframes, such that each subframe is associated with one of a plurality of partial fields of view. The method further includes guiding the subframes onto one of the associated sub-blocks of the display surface using at least the SLM. The method further includes controlling the two-dimensional pixel array of the SLM with the processor to generate the subframes. The method further includes controlling the scanner with the processor to guide the subframes onto one of the associated sub-blocks of the display surface for displaying a reconstructed image within the full field of view, such that the full field of view includes each of the partial fields of view.

[0023] On the one hand, the method also includes displaying the reconstructed image on the display surface such that the reconstructed image has a total image resolution higher than that of the SLM.

[0024] In another aspect, the method also includes using a processor to control at least one of the SLM and the scanner to guide subframes onto these subblocks, such that the subframes overlap each other or are tiled adjacent to each other without overlapping.

[0025] Other areas of application will become apparent from the description provided herein. It should be understood that the descriptions and specific examples are for illustrative purposes only and are not intended to limit the scope of this disclosure. Attached Figure Description

[0026] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this disclosure in any way.

[0027] Figure 1This is a schematic diagram of an example of a motor vehicle equipped with a holographic display system.

[0028] Figure 2 yes Figure 1 A schematic diagram of the passenger cabin of a motor vehicle shows an example of a system with a spatial light modulator (SLM) having a partial field of view, SLM resolution, and an SLM eyebox.

[0029] Figure 3 yes Figure 2 The schematic diagram of the system shows one example of a system used to stitch subframes together to provide frames with a full field of view, a resolution higher than that of the SLM, and an eye frame size larger than that of the SLM.

[0030] Figure 4 yes Figure 2 The schematic diagram of the system shows another example of a system used to dither subframes with a partial field of view to provide frames with a full field of view and a resolution higher than that of the SLM.

[0031] Figure 5 yes Figure 1 A schematic diagram of the passenger cabin of a motor vehicle shows another example of a holographic display system.

[0032] Figure 6 It is an operation Figure 1 A flowchart of an exemplary method for a holographic display system. Detailed Implementation

[0033] The following description is exemplary in nature and is not intended to limit this disclosure, application, or use.

[0034] This disclosure describes an example of a motor vehicle having a holographic display system (system) 100. A non-limiting example of the system includes an augmented reality (AR) head-up display (HUD) that can blend holographic display elements with other display elements or environmental features to make a holographic image appear relative to the physical world. As described in detail below, system 100 includes a spatial light modulator (SLM) 102 having a two-dimensional pixel array 104. The two-dimensional pixel array 104 has associated resolution, eye frames, and spacing, and uses encoded holograms to generate subframes for associated partial fields of view. The system also includes a computer for controlling the SLM to display a reconstructed image formed by each partial field of view and having a maximum field of view based on the spacing of the SLM. The reconstructed image has a resolution higher than the resolution of the SLM and has an eye frame size larger than the eye frame size of the SLM. As described in a non-limiting example below, subframes can be stitched together, wherein subframes are displayed on a display surface and / or positioned adjacent to each other to form a full frame with a full field of view. The overall perceived image will be the result of stitching subframes to increase the overall resolution. In another example, the subframes are jittered at an angle so that portions of the subframes overlap each other on a common portion of the display surface. The perceived resolution of the overlapping portions on the common portion is higher than that of the SLM. This system can be used as part of any land, sea, or air vehicle. In other non-limiting examples, the system can be used as part of a stationary or mobile power plant, robot, or platform. For illustrative consistency, applications of the system as part of a motor vehicle will be described below, but this disclosure is not intended to limit this implementation.

[0035] refer to Figure 1 An example of motor vehicle 106 includes a limited passenger cabin 110. Figure 2 The vehicle body 108 and a plurality of glass panels 112 surrounding the passenger cabin 110. The glass panels 112 may include at least one of a windshield 114, a rear windshield 116, a sunroof 118, and a plurality of windows 120 surrounding the passenger cabin 110.

[0036] As shown in the figure. Figure 2 and 3 As best shown, system 100 also includes multiple sub-blocks 124 ( Figure 3 The display surface 122. One non-limiting example of the display surface may be an integral part of the windshield 114. In other non-limiting examples, the display surface may be the rear windshield 116. Figure 1 ), sunroof 118, window 120 or other suitable part of vehicle 106.

[0037] Return to reference Figure 1The motor vehicle 106 also includes a holographic display system 100 (system) coupled to the vehicle body 108. System 100 includes a light source 126 for generating a coherent beam or encoding a hologram. A non-limiting example of the light source 126 may include a laser 128. Although Figure 1 The image depicts a single laser 128, but the system is expected to include two or more lasers, such as separate red, green, and blue lasers.

[0038] System 100 also includes a spatial light modulator (SLM) 102 with a two-dimensional pixel array 104, the two-dimensional pixel array 104 having SLM resolution and an SLM eye frame. The two-dimensional pixel array 104 modulates a coherent beam to generate multiple subframes 130. Figure 3 The input frame can be a subframe 130 associated with one of a plurality of partial fields of view 132. In the non-limiting example shown, the two-dimensional pixel array 104 can modulate the beam to generate subframes 130 associated with nine partial fields of view, which can be displayed to provide a full field of view. However, it is envisioned that the two-dimensional pixel array can modulate the beam to generate subframes associated with partial fields of view, such that each subframe forms part of the full field of view. The SLM is a fast-switching high-pixel-density spatial light modulator (SLM) with driving circuitry to provide a high frame rate. The high frame rate can be a frame rate of 60 Hz, such that the SLM displays a sequence of subframes in a time-sequential manner at a rate at which the human eye does not experience flicker when viewing the entire field of view. However, it is contemplated that the frame rate can be higher or lower than 60 Hz. In one non-limiting example, the two-dimensional pixel array 104 is a liquid crystal on silicon (LCoS) two-dimensional pixel array 104 that provides diffractive phase elements to support holographic projection. In other examples, the spatial light modulator can be a MEMS shutter display or a DLP DMD array. The spatial light modulator can be independently controlled to block, transmit, or reflect different light rays at high resolution.

[0039] exist Figure 1 In the non-limiting example shown, laser 128 can project a laser beam 134 onto a two-dimensional pixel array 104 of SLM 102, and the corresponding diffraction patterns 136, 138 pass through a Fourier transform lens 140, which performs beamforming to focus the resulting perceived image onto display surface 122. The diffraction patterns 136, 138 can be generated by the laser beam projected onto the two-dimensional pixel array 104 and change over a period of time to become the image output on the two-dimensional pixel array 104. In other examples, the system may not include a Fourier transform lens.

[0040] refer to Figure 3System 100 also includes a scanner 142 for guiding subframe 130 onto one of the associated subblocks 124 of display surface 122. Non-limiting examples of the scanner may include screen scanning systems, viewport scanning systems, and 360-degree scanning systems. It is conceivable that other instances of systems with other suitable SLMs may not include a scanner, where the direction of the beam is encoded into the hologram of the subframe of the SLM.

[0041] Return to reference Figure 1 System 100 also includes a computer 144 having a processor 146 coupled to a light source 126, an SLM 102, and a scanner 142. The processor 146 can be used to calculate image data to be output to a two-dimensional pixel array 104 of the SLM 102 in real time. The processor 146 may include processing circuitry, which may include application-specific integrated circuits (ASICs), electronic circuitry, and processors (shared, dedicated, or grouped). The computer 144 may also include a memory 148 for executing one or more software or firmware programs, combinational logic circuitry, and / or other suitable components providing the aforementioned functionality. The processor 146 may include an input / output interface 150 for communicating with various components, such as the input frame source 152 and the SLM 102. The input frame source 152 can provide subframes representing a relevant portion of the field of view to be projected as a holographic image onto the display surface 122. In this non-limiting example, processor 146 may use known image processing techniques to determine a phase hologram for output to a two-dimensional pixel array 104. This results in diffraction images 136, 138 being generated in response to laser 128 and during beam formation via Fourier transform lens 140, resulting in the desired projected subframe 130 on display surface 122. However, in other examples, the system may not include a Fourier transform lens. When system 100 is integrated into a vehicle, input frame source 152 may be a vehicle control unit, for example, for displaying instrument values, signs, information, entertainment content, or other such image-based data.

[0042] Processor 146 may be communicatively coupled to one or more local processors, such as local processors included in electronic processor units (ECUs) in vehicle 100 for monitoring and / or controlling various vehicle components, for example, via a vehicle communication module. Processor 146 is typically arranged to communicate on the vehicle communication module via internal wired (e.g., buses in vehicle 106) and / or wireless networks (e.g., controller area networks (CAN)), and / or other wired and / or wireless mechanisms. Via the vehicle communication module, processor 146 can send messages to and / or receive messages from various devices in vehicle 106, such as vehicle sensors, actuators, vehicle components, human-machine interfaces (HMIs), etc. Alternatively or additionally, where the processor includes multiple devices, a vehicle communication network may be used for communication between devices represented herein as computer 144. Furthermore, as described below, various processors and / or vehicle sensors may provide data to computer 144. Processor 146 may receive and analyze data from sensors substantially continuously and / or periodically. Furthermore, object classification or recognition technology can be used in processor 146, for example, based on data from lidar sensors, camera sensors, etc., to identify lane markings, object types (e.g., vehicles, people, rocks, potholes, bicycles, motorcycles, etc.), and the physical characteristics of the objects.

[0043] Computer 144 also includes memory 148 comprising one or more forms of computer-readable medium, and stores instructions executable by processor 146 to perform various operations, including those disclosed herein. Memory 148 includes instructions that cause processor 146 to be programmed to control the two-dimensional pixel array 104 of SLM 102 to generate subframe 130 for the associated partial field of view. Figure 3 The processor 146 is also programmed to control the scanner 142 to direct the subframe 130 onto a relevant one of the subblocks 124 of the display surface 122 for displaying the reconstructed image across the entire field of view, wherein the entire field of view includes each partial field of view. The reconstructed image on the display surface 122 has a total image resolution, and the total image resolution is higher than the SLM resolution.

[0044] refer to Figure 3The processor 146 is programmed to control the scanner 142 to guide subframes 130 onto sub-blocks 124 of the display surface 122, such that the subframes 130 are tiled adjacent to each other without overlapping. The processor 146 is further programmed to control the scanner 142 to guide the subframes 130 onto the sub-blocks 124, wherein the sub-blocks 124 are arranged in multiple rows 154 and multiple columns 156 on the display surface 122. In this example, the total image resolution is equal to the SLM resolution multiplied by the number of sub-blocks displaying subframes 130. Furthermore, the display surface 122 has a display surface eye frame size, which is equal to the SLM eye frame size multiplied by the reciprocal of the ratio between a portion of the field of view of one of the sub-blocks and the full field of view 130.

[0045] refer to Figure 4 Another instance of processor 146 can be programmed to control SLM 102 to dither subframes 130 onto subblocks 124 at an angle, such that each subframe 130 has an enhancement portion 158 and the enhancement portion 158 of subframe 130 overlaps another on display surface 122. The enhancement portion 158 of the associated subframe 130 has a perceptual resolution higher than the SLM resolution.

[0046] refer to Figure 5 Another example of the holographic display system 200 is similar to Figure 2 The system is 100 and the same parts are identified by the same number plus 100. However, although Figure 2 System 100 includes a display surface 122 in the form of a surface facing the cabin of windshield 114, and system 200 includes a combination glass 262 separate from windshield 214 and disposed within cabin 210, and the display surface 222 is part of combination glass 262.

[0047] refer to Figure 6 A method 300 for operating a holographic display system 100 of a motor vehicle 106. The method 300 begins at frame 302, where a light source 126 generates a coherent beam.

[0048] At frame 304, processor 146 generates a first actuation signal to control the two-dimensional pixel array of SLM 102 to generate subframe 130. In response to receiving the first actuation signal from processor 146, SLM 102 modulates a coherent beam to generate subframe 130, such that each subframe 130 is associated with one of a plurality of partial fields of view.

[0049] At frame 306, processor 146 generates a second actuation signal that controls scanner 142 to guide subframe 130 onto an associated subblock 124 of display surface 122. In response to receiving the second actuation signal from processor 146, scanner 142 guides subframe 130 onto the associated subblock 124 of display surface 122 for displaying the reconstructed image across the entire field of view, such that the entire field of view includes each of the partial fields of view. In a non-limiting example, when the processor is in a stitching mode, processor 146 controls scanner 142 to guide subframe 130 onto subblock 124 such that subframes 130 are tiled adjacent to each other without overlapping. In another non-limiting example, when the processor is in a dithering mode, processor 146 controls scanner 142 to dither subframe 130 onto subblock 124 at an angle such that subframes 130 overlap.

[0050] In block 308, the reconstructed image 160 is displayed on display surface 122 such that the reconstructed image has a total image resolution higher than the SLM resolution and an eye frame size greater than the eye frame size of the SLM 102.

[0051] Computers and computing devices typically include computer-executable instructions, which can be executed by one or more computing devices such as those listed above. Computer-executable instructions can be compiled or interpreted from computer programs created using various programming languages ​​and / or technologies, including but not limited to JAVA, C, C++, MATLAB, SIMULINK, STATEFLOW, VISUAL BASIC, JAVA SCRIPT, PERL, HTML, TENSORFLOW, PYTORCH, KERAS, etc., individually or in combination. Some of these applications can be compiled and executed on virtual machines, such as JAVA VIRTUALMACHINE, DALVIK Virtual Machine, etc. Typically, a processor (e.g., a microprocessor) receives instructions from memory, computer-readable media, etc., and executes those instructions to perform one or more processes, including one or more processes described herein. Such instructions and other data can be stored and transferred using various computer-readable media. Files in computing devices are typically collections of data stored on computer-readable media, such as storage media, random access memory, etc.

[0052] Memory can include computer-readable media (also known as processor-readable media), which includes any non-transitory (e.g., tangible) medium involved in providing data (e.g., instructions) that can be read by a computer (e.g., a computer's processor). Such media can take many forms, including but not limited to non-volatile and volatile media. Non-volatile media can include, for example, optical discs or magnetic disks, and other persistent storage. Volatile media can include, for example, dynamic random access memory (DRAM), which typically constitutes main memory. Such instructions can be transmitted via one or more transmission media, including coaxial cables, copper wires, and optical fibers, including lines that constitute a system bus coupled to the processor of an ECU. Common forms of computer-readable media include, for example, floppy disks, floppy disks, hard disks, magnetic tape, any other magnetic media, CD-ROMs, DVDs, any other optical media, punched cards, paper tape, any other physical media with a perforated pattern, RAM, PROM, EPROM, FLASH EEPROM, any other memory chips or cassette tapes, or any other media that a computer can read.

[0053] The databases, data repositories, or other data stores described in this article can include various mechanisms for storing, accessing, and retrieving a wide range of data, including hierarchical databases, a set of files in a file system, application databases in proprietary formats, relational database management systems (RDBMS), and so on. Each such data store is typically contained on a computing device employing a computer operating system, such as one of those mentioned above, and can be accessed via a network in any or more ways. File systems are accessible through a computer operating system and can include files stored in various formats. In addition to languages ​​used for creating, storing, editing, and executing stored procedures (such as the PL / SQL language mentioned above), RDBMS typically also use Structured Query Language (SQL).

[0054] In some instances, system elements may be implemented as computer-readable instructions (e.g., software) on one or more computing devices (e.g., servers, personal computers, etc.) stored on an associated computer-readable medium (e.g., disks, storage, etc.). A computer program product may include instructions stored on a computer-readable medium for performing the functions described herein.

[0055] Regarding the media, processes, systems, methods, heuristics, etc., described herein, it should be understood that although the steps of these processes, etc., have been described as occurring in a certain ordered order, such a process can be practiced by performing the described steps in an order different from that described herein. It should also be understood that some steps may be performed simultaneously, other steps may be added, or some steps described herein may be omitted. In other words, the description of processes herein is provided for the purpose of illustrating certain embodiments and should in no way be construed as limiting the claims.

[0056] Therefore, it should be understood that the above description is intended to be illustrative rather than restrictive. Many embodiments and applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. The scope of the invention should not be determined by reference to the above description, but rather by reference to the appended claims and the full scope of their equivalents. Future developments are anticipated and intended in the art discussed herein, and the disclosed systems and methods will be incorporated into such future embodiments. In summary, it should be understood that modifications and variations are possible with respect to the invention, and it is limited only by the following claims.

[0057] All terms used in the claims are intended to be given the simple and common meaning as understood by those skilled in the art, unless expressly indicated otherwise herein. In particular, the use of singular articles such as “a,” “the,” “the,” etc., should be interpreted as listing one or more of the indicated elements, unless the claims set forth an express limitation to the contrary.

[0058] The description in this disclosure is exemplary in nature only, and any changes that do not depart from the spirit and scope of this disclosure are intended to fall within its scope. Such changes should not be considered as departing from the spirit and scope of this disclosure.

Claims

1. A holographic display system for a motor vehicle, the holographic display system comprising: a light source for generating a coherent light beam; a spatial light modulator comprising a two-dimensional array of pixels having a spatial light modulator resolution, the two-dimensional array of pixels encoded with a hologram for diffracting the coherent light and modulating the coherent light beam to produce a plurality of sub-frames, wherein each sub-frame is associated with one of a plurality of partial fields of view; a display surface comprising a plurality of sub-patches; and a computer comprising: a processor coupled to the light source and the spatial light modulator; and a memory comprising instructions causing the processor to be programmed to control at least the two-dimensional array of pixels of the spatial light modulator to generate the sub-frames for displaying a reconstructed image within a full field of view, wherein the full field of view comprises each of the partial fields of view; wherein the processor is further programmed to control the spatial light modulator to angularly dither the sub-frames onto the sub-patches such that each of the sub-frames has an enhanced portion and the enhanced portions of the sub-frames overlap with each other on the display surface, wherein the enhanced portion of a relevant sub-frame has a higher perceived resolution than the spatial light modulator resolution; the holographic display system further comprising a scanner for directing the sub-frames to a relevant one of the sub-patches of the display surface; wherein the processor is coupled to the spatial light modulator and controls the scanner to direct the sub-frames to a relevant one of the sub-patches of the display surface to display the reconstructed image within the full field of view, wherein the sub-patches are arranged in a plurality of rows and a plurality of columns on the display surface. the reconstructed image on the display surface has a total image resolution that is higher than the spatial light modulator resolution.

2. The holographic display system of claim 1, wherein, the two-dimensional array of pixels of the spatial light modulator has a spatial light modulator eyebox size, and the display surface has a display surface eyebox size.

3. The holographic display system of claim 1, wherein, 4. A motor vehicle comprising: a body defining a passenger compartment; a plurality of glass panels surrounding the passenger compartment, the glass panels comprising at least one of a front windshield, a rear windshield, a sunroof, and a plurality of windows surrounding the passenger compartment; and a holographic display system coupled to the body, the holographic display system comprising: a light source for generating a coherent light beam; a spatial light modulator comprising a two-dimensional array of pixels having a spatial light modulator resolution, the two-dimensional array of pixels encoded with a hologram for diffracting the coherent light and modulating the coherent light beam to produce a plurality of sub-frames, wherein each of the sub-frames is associated with one of a plurality of partial fields of view; a display surface comprising a plurality of sub-patches; and a computer comprising: a processor coupled to the light source and the spatial light modulator; and a memory comprising instructions causing the processor to be programmed to control at least the two-dimensional array of pixels of the spatial light modulator to generate the sub-frames for displaying a reconstructed image within a full field of view, wherein the full field of view comprises each of the partial fields of view; ​ a memory comprising instructions causing the processor to be programmed to control at least the two-dimensional pixel array of the spatial light modulator to generate the sub-frames for displaying a reconstructed image within a full field of view, wherein the full field of view comprises each of the partial fields of view; wherein the processor is further programmed to control the spatial light modulator to angularly dither the sub-frames onto the sub-tiles such that each of the sub-frames has an enhanced portion and the enhanced portions of the sub-frames overlap with each other on the display surface, wherein the enhanced portion of a related sub-frame has a higher perceived resolution than the spatial light modulator resolution; the holographic display system further comprises a scanner for directing the sub-frames to a related one of the sub-tiles of the display surface; wherein the processor is coupled to the spatial light modulator and controls the scanner to direct the sub-frames to a related one of the sub-tiles of the display surface to display the reconstructed image within the full field of view, wherein the sub-tiles are arranged in a plurality of rows and columns on the display surface.

5. Motor vehicle according to claim 4, wherein the display surface comprises a portion of at least one of the front windshield, the rear windshield, the sunroof, and the window.

6. Motor vehicle according to claim 5, wherein the holographic display system further comprises a combination glass disposed within the passenger cabin and the display surface is a portion of the combination glass. the holographic display system further comprises a combination glass disposed within the passenger cabin and the display surface is a portion of the combination glass.

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