presentation.pptx
- 1. 3D Holographic Projection Technology Shrijeet Kumar 05124802018 Ambedkar Institute of Technology SEMINAR Under the guidance of: Ms. Ishleen Kaur BCA AIT By:
- 2. Contents • What isHolography • Why Holography • Types of Holograms • How Holograms work • Recording of hologram • Reconstruction of hologram • Advances in technology • Applications & Future scope • Conclusion 2
- 3. What is Holography ? ▶ Holography is a technique that allows the light scattered from an object to be recorded and later reconstructed. ▶ The technique to optically store, retrieve, and process information. ▶ Preserve the 3-D information of a holographed subject 3
- 4. Why holographic display resolution three recording of an ▶ A high dimensional object ▶ Glasses free 3D display ▶ No need for projection screen ▶ Life like images ▶ Interactive display 4
- 6. Types of Holograms A. Reflection hologram ▶ Illuminated by a spot of white incandescent light source, from front-above ▶The image consists of light reflected by the hologram ▶Produces multicolour holograms, makes images optically indistinguishable from the original objects 6
- 7. is pattern digitally, using Interference calculated algorithms 7 B.Transmission hologram Viewed with laser light, usually of the same type used to make the recording Need light source behind them Virtual image can be very sharp and deep C.Computer-generated holograms No need for a real object
- 8. How holograms work The time-varying light field of a scene with all its physical properties is to be recorded and then regenerated. working of divided into Hence the holography is two phases: •Recording •Reconstruction 8
- 9. Recording of hologram ▶ Basic tools required to make a hologram includes a red lasers, beam splitter, and holographic lenses, mirrors film ▶ Holograms are recorded in darker environment 9
- 10. Recording a hologram 10
- 11. 11 • Laser : Red lasers, usually helium-neon (HeNe) lasers, are common in holography. These are coherent light source. • Beam splitter:This is a device that uses mirrors and prisms to split laser beam of light into two beams. Object beam (directed onto the object) and Reference beam (travels directly onto the recording medium)
- 12. 12 • Mirrors: These direct the beams of light to the correct locations • Holographic film: Holographic film can record light at a very high resolution, which is necessary for creating a hologram. It's a layer of light-sensitive compounds on a transparent surface, like photographic film. Eg:Silver Halide Emulsion
- 13. Process Hologram Recording ▶ When the two laser beams reach the recording medium, their light waves intersect and interfere with each other. It is this interference pattern that is imprinted on the recording medium. Hologram Reconstruction 13
- 14. Reconstructing a hologram 14
- 15. Reconstruction of hologram ▶ The photographic plate is illuminated with original light source used for recording holograms. 15
- 16. Capturing of holographic video ▶ By replacing the conventional holographic plate with a digital camera and an optoelectronic screen, we capture and 2D can display holographic video. 16
- 17. Projection of holographic video ▶ Video hologram is coded into light modulators ▶ These light modulators are illuminated by coherent light beam source, to project video 17
- 18. Projection of multicolour holographic video 18
- 19. Advances in technology Touchable holograms holographic with haptic Tactile display feedback Horizontal 360º view of a image on table top User interfacing integrated displays 19
- 20. Applications & Future scope ▶ Educational applications ▶ Marketing with 3D holographic display ▶ 3D simulation displays for scientific visualization ▶ Improved virtual Reality and video augmented reality ▶ Telepresence and conferencing ▶ Entertainment displays ▶ Military and Space Applications 20
- 21. ▶ Holographic for military, checkpoint battlefield simulations ▶ Intense real gaming rooms ▶ In future all displays like televisions, mobile phone displays, projector displays will be replaced by holographic displays 21
- 22. Projected cost of Holographic system 22
- 23. Conclusion ▶ Holographic Technology and Spectral Imagining has endless applications, as far as the human mind can imagine ▶ In future, displays will all present holographic be replacing displays in all sizes, from small phone screen to large projectors 23
- 24. Thank you 26