Home Technology Company Blog Contact Unique and patented technology solutions for real-time holography With SeeReal’s extensive background in development and manufacture of Stereoscopic 3D (S3D) displays, it became obvious to the SeeReal team a long time ago that S3D inherently can never provide a comfortable long-term viewing experience of natural looking 3D scenes with properly scaled depth. S3D’s „2x 2D views“ principle (one 2D view for the left eye and one for the right eye) is not capable delivering all visual depth cues to the human sensory system. This applies to all Stereo 3D solutions – no matter if with Stereo glasses or without (Auto-Stereo). Also, the resulting requirement for depth-compressed 3D of S3D systems prohibits proper scale of 3D images which is either boring for consumers or prohibitive to professionals – just imagine a surgeon looking at an organ or an engineer working on a CAD design generated with improper depth. But even depth-compressed S3D with missing 3D cues generates eye fatigue or discomfort to a significant part of the population. read more 1 2 True interference-based holographic reconstructions in 3D space The term „hologram“ has been in frequent use – and misuse – since the „formal“ invention of holography in the 1960’s. So for the avoidance of doubt it must be emphasized that SeeReal’s solution to 3D displays is based on true interference-based holography in its literal meaning. Holographic 3D (H3D) designs, systems and prototypes of SeeReal are not based on mere imaging on flat screens or semi-transparent mirrors. SeeReal solutions reconstruct 3D objects and complex 3D scenes in real space. The result cannot be easily shown on 2D displays, as you probably use reading this. But bear with us and read on … read more Overcoming the super-resolution display requirement of „classic holography“ A long time ago, first holograms were made using high resolution analog film, easily with up to 5000 lines per millimeter resolution. Since such film is capable of generating very fine structures, diffraction angles can be very large. This translates into large viewing angles onto these „classic holograms“. Accordingly, 3D reconstructions from analog holograms are visible in a large area in front of the hologram. But transferring this principle to digital display technology would mean generation of extremely small displays pixels – at an extreme quantity. Even if this was possible (and scalable) computation requirements scale to PetaFLOP range for a decently sized display presenting holographic reconstructions with high H3D resolution and large 3D depth. Proper coherent illumination of such system is still another challenge. read more 1 2 Eliminating the need for super-computation resources of large high-resolution 3D holograms As explained above, SeeReal limits the holographic information to what observers of a H3D display, or in fact of any real life environment, can see at a given point in time and space. By limiting the information to eye boxes or Viewing Windows, one also limits the area on the physical display, the hologram, required to encode information for individual portions of the 3D scene. One may say, SeeReal discretizes the hologram. In fact, each 3D scene point can be encoded in a very small individual hologram which are then super-positioned to generate the total 3D scene. SeeReal established the term „Sub-holograms“ for these hologram fractions. read more Simplifying the light source coherence requirements for large holographic 3D reconstructions Breaking down a 3D scene and corresponding hologram into small fractions, which SeeReal many years ago introduced as Sub-holograms, greatly simplifies the illumination requirements. In „classic holography“ each portion of the hologram (or H3D display) must be in sync, because all portions contribute to each portion of the 3D reconstruction; light from all physical display pixels interferes. This requires laser light sources with a coherence length at least as large as the physical display size, which calls for quite expensive lasers. read more Interested in a partnership with SeeReal?visit company pagecontact us Core enabling technologies of H3D SeeReal has developed holographic 3D (H3D) system designs combined with core enabling technologies for H3D displays for a wide range of sizes and applications. Core technologies are being continuously improved by SeeReal and in cooperation with partners for application in future (licensed) display products. A portfolio of technology solutions has been developed for application in product-driven projects with key SeeReal customers and license partners. Read on below for some examples. Some proprietary component solutions and services can be made available by SeeReal for third party application outside H3D displays. Please inquire via telephone or our contact form. Laser display illumination Some principles were explained further up this page, for instance the need for sufficiently coherent illumination of holograms, so that high quality H3D reconstructions are enabled. The required degree of light coherence is typically delivered by laser sources. While SeeReal’s hologram discretization and Sub-holograms greatly simplify laser light source requirements, which makes lasers cheaper, these spot sources must be expanded to larger areas to properly illuminate the hologram – ideally all in a slim package. Therefore, as part of SeeReal’s component development efforts, flat laser backlight designs were created, based on a mix of „classic“ refractive optics and diffractive optical elements (DOE). read more Large diffractive optical elements (DOE) based on volume Bragg diffraction As explained in the previous paragraph, DOE are especially suitable for use with laser illumination and can generate very energy-effective systems. They also are instrumental to minimizing the physical size of a range of optical elements by replacing bulky glass elements with micron-thin films. SeeReal has developed solutions to illumination systems as well as imaging systems using DOE. This includes design and manufacture of a DOE family member, holographic optical elements HOE, as implemented in optical films with volume holograms. These can be made at partner sites but also in-house at SeeReal. read more 1 2 Observer eye finding and tracking with high precision and speed SeeReal’s tracked Viewing Window approach is based on repositioning observer eye boxes in real-time and unnoticed by the observer. As in real life viewing, one only requires the visual information passing through the few square millimeters of one’s eye pupils. So as long as seamless eye-tracking and positioning of H3D information at eye positions is performed, observers won’t miss anything and won’t even notice the reduction of data. Accordingly, a key enabling element to SeeReal’s H3D solution is fast and precise observer eye-finding and -tracking. Depending on application, this is implemented for single users (e.g. in desktop gaming) or for multiple users. read more Configurations for high speed LC modulators H3D display solutions, especially for multi-user applications, greatly benefit from higher frame rates. For LCD technology devices this is related to optimization of LC materials but also to backplane and driving architectures. SeeReal recognized this early in their development and dedicated resources to corresponding activities. These included upgrading LCD systems to full lambda phase modulation or driving displays at high frame rates without the typical electrical losses of common active matrix architectures. Several LC material and system developments were conducted with partners in science and industry. But SeeReal also successfully conducted numerous electronics hardware and software projects with its dedicated in-house teams. read more Real-time computation of HD-quality H3D scenes of unlimited natural 3D depth SeeReal’s patented Sub-hologram and Viewing Window technologies are key enabling elements to real-time holographic 3D scenes in high resolution, color and unlimited 3D depth. But even when using Sub-holograms, the classic approach to computing holograms, e.g. by using various Fourier transforms, would generate prohibitive computation requirements. Even Moore’s law or ingenious processor designs wouldn’t be enough for a very long time. Accordingly, SeeReal solved the problem with proprietary principles and algorithms which are much more efficient and easy to embed in semi-conductor hardware. read more H3D display and component prototyping for system and product development SeeReal has a proven track record for design and manufacture of auto-stereoscopic displays. While SeeReal has abandoned manufacture of stereoscopic 3D (S3D) displays, corresponding know-how and expertise in design and technology as well as components and integration have been utilized in numerous implementations. These range from component development to system prototyping, including not just optical and mechanical design and proprietary component manufacture but also electronics hardware and software. read more Please note that SeeReal does not give public demonstrations as this would over-stretch our resources. Prototype demos are reserved for commercial discussions with project or license partners of SeeReal. SeeReal Technologies SeeReal Technologies S.A. 212, Rue Principale L-5366 Munsbach Grand-Duchy of Luxembourg Seiten Home Technology Company Blog Contact Privacy Contact info@seereal.com +352 26 45 51 Location by GoogleMaps Connect With Us © 2021 SeeReal Technologies - Legal information - website by devbite