SEMINAR ON SCREENLESS DISPLAY By, VINEESH.A

CONTENTS Introduction GROups of screenless displays Working of three groups of screenless display ADVANTAGEs Conclusion

INtroduction Screen less display is the present evolving technology in the field of the computer-enhanced technologies. Screen less display technology has the main aim of displaying (or) transmitting the information without any help of the screen (or) the projector.. Screen less computing system mainly divided into three groups Visual image display Retinal display Synaptic interface

Visual Image display Visual Image screen less display includes any screen less image that the eye can perceive. Hologram Virtual reality goggles Head up displays in jet fighters

Fig: Recording a hologram

Fig: Reconstructing a hologram

RETINAL display Images are projected directly onto the retina. They are distinguished from visual image systems because light is not reflected from some intermediate object onto the retina Fig: Retinal display

Fig: Working of Retinal display

Photon source to generate coherent beam of light. Coherent source allow s/m to draw diffraction limited spot on the retina. Intensity modulator adjust intensity. Modulated image scanned each image part/pixel at proper position on the retina. Lense and cornea then focus beam on the retina.

Synaptic interface Does not use light at all. Visual information completely bypass the eye ,transmitted to the brain. Brain computer interface/Human machine interface/synthetic telepathy.

Brain computer interface block diagram

Advantages Low power requirement High resolution. Portable. Wider angle of view Greater brightness and contrast. The future of mobile devices both touchless & screen less Future bypassing screen & keyboard

Conclusion May be in the future the world may be dominated with the screen less display technologies and this enriches the world of technological empowerment in the field of the computer technology.

References & photo credits ElProCus https://www.elprocus.com/ Wikipedia https://www.wikipedia.org/

Thank you