Apparatus for recording, transmission, reproduction or processing of sound, images, videos and data; microchips; electronic chips for integrated circuits; electronic chips; electronic circuits; electronic components; integrated circuits; printed circuits; optical semi-conductors; optical sensors; High- definition integrated graphics chips; microdisplays with organic light-emitting diodes [OLEDs]; microdisplays,so called active matrix microdisplays with organic light emitting diodes [OLEDs]; OLED near-eye display system; optical apparatus and instruments; electronic displays; image, video and data viewing devices; optical data media; optical devices; heads-up display apparatus; head-mounted video display apparatus; head-mounted video displays; head-mounted electronic displays, intended for use by athletes; helmet comprising a heads-up display apparatus; augmented reality screens; virtual reality screens; virtual reality goggles; augmented reality glasses; digital recording media; data and image processing apparatus; display monitors; miniature viewing screens; micro viewing screens; software; computer hardware; mobile applications; application software for mobile devices; portable electronic display device; wearable computer hardware; wearable computers; video display monitors to be worn on the body; computer hardware and software for displaying, collecting, compiling, processing, transmitting and broadcasting videos, images and data; virtual-reality computer hardware and software; augmented-reality computer hardware and software; computer hardware and software for gesture recognition, voice recognition, eye-tracking, head-movement tracking and virtual keyboard for interactive mobile devices worn on the head; wearable computer hardware and software for measuring vital signs and performing diagnostic tests of users at various locations and for transmitting information relating to the aforesaid measurements and the position and orientation of the user by means of communication, namely, a telephone connection, a network or Internet interface, to a central control station; computer hardware and software used for physiological monitoring and measuring, collection and compilation of data, review, comparison, interpretation, analysis, diagnosis and storage of user's health parameters and position and orientation thereof; GPS navigation systems; spectacles; 3D spectacles; smart glasses; goggles for sports; sports eyewear; magnifying glasses; cameras; photographic cameras; infrared cameras; camcorders; thermal imaging cameras; binoculars; night vision goggles; night vision apparatus and instruments; video imaging systems; endoscopic cameras for industrial use; endoscopes for industrial use; microscopes; photographic viewfinders; telescopes; telescopic sights for rifles; laser range finders