Holography is considered as one of the most remarkable discoveries in modern times. Nevertheless for its first decades it seems to be getting forgotten.

Originally stepped up back at the end of the 1940s to improve electron microscopy, it can not fulfill this function and the wish of its discoverer hungarian-british physicist Dennis Gábor. Due to sources of pure coherent light, which are indispensable for optical holography, being not yet available, not even Gábor himself can locate a field of application for this phenomenon. He can neither recognize at that point of time the meaning and the potential of his discovery and with it the influence this new medium would have on our daily lives one day. Nor can he imagine the plenty of phantasms emerging from this phenomenen. Phantasms, which seem to be mostly one step ahead of applied holography.

With the discovery of laser light at the beginning of the 1960s, for the first time ever it becomes possible to record and reconstruct a real three-dimensional image of an object. What once simply starts as a little rainbow coloured picture of a toy train, today finds its applications in a vast variety of different optical and acoustical fields.

It is as remarkable as the phenomenon of holography itself, that it could never prevail as a popular medium like movie, TV, radio, the internet, print media, etc. Especially when keeping in mind all the phantasmatic stories which emerge from this medium. A lot of dreams, hopes and promises that holography never made by itself, but some of them is trying to keep.

blog.holographie.eu accompanies my scientific work on holography, which would like to give holography an attention, that elsewhere is mostly refused to it. It is of course initially interested in based techniques and technologies of holography and how it works. Moreover it is also interested in these upcoming phantasms and their stories arising from possible abilities of holography. Especially against the backdrop of holography seems to be reaching a point, where its possibilities and abilities catch phantasms.

This blog would like to serve as a sketch book for unprotected ideas, of which some maybe become expanded, while others are not haunted any further, but wants to be told and should not be unmentioned forgotten.


please visit also www.holographie.eu

2010-08-03

Apple patents glasses-free holographic 3D display

Mid May the U.S. Patent and Trade Office reveals a new patent application from Apple, original submitted Jan. 14th of 2010. Under the title Three-Dimensional Display System it describes an "angularly responsive reflective surface".


A projector generates an image onto a special screen, which reflects the images into the right and left eye of the observer.


Furthermore the position of an observer is tracked by an advanced camera system / light sensor syncs the projector system to ensuring that the light beam for the left and right images would correctly reach the observer's respective left and right eyes:

"The positions of one or more observers are also tracked in real time so that the images that are being projected to the observers can be continually customized to each observer individually. [...] The real time positional tracking of the observer(s) also enables 3D images having a realistic vertical as well as horizontal parallax."

"In addition, each 3D image can be adjusted according to the observers' individually changing viewing positions, thereby enabling personally customized and individuated 3D images to be viewed in a dynamic and changeable environment. Further, the positional tracking and positionally responsive image adjustment enable synthetization of true holographic viewing experiences."

The patent also describes "unobtrusive 3D virtual desktop" allowing users to "manipulate objects within the desktop by reaching into the virtual display" and "grasping" and "pushing" the objects.

"The manipulation of the virtual objects occurs because the feedback mechanism recognizes observer movements, such as finger movements, at the locations of the virtual objects and reconfigures the display of the virtual objects in response."

The idea of accomplishing multi-touch with projected objects in a 3D space isn't all new. In February entry Hand tracking introduces Johnny Chung Lees similar work.


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