Presentation about hologram technology .

In this presentation i added alot about the hologram.

1. HOLOGRAM TEACHNOLOGY SUBMITTED BY: RAGULRAJKUMAR S 951518104046

2. Contents Introduction History Working and Process Holography vs Photography Hologram Classification Applications Holography in Fiction

3. what is HOloGRAM A hologram is a physical structure that diffracts light into an image. The term ‘hologram’ can refers to both the encoded material and the resulting image .

4. Holography Science of producing holograms. Enables 3-D images (hologram) to be made. The image changes as the positon of the orientation of the viewing system changes in exactly the same way as if the object were still present , thus making the image appear in Three-Dimensional.

5. History Dennis Gabor- Father of holography and holographic Technologies. Used in Electron microscopy earlier. Also known as Electron holography. Optical holography is not advanced until the development of Laser in 1960. In 1961 the first 3D object recorded by the laser . That’s the first practical optical hologram .

6. Working Enables a light field to be recorded and later reconstructed when the original light field is no longer present, due to the absence of the original object. Can be thought of as somewhat similar to Sound Recording , whereby a sound field is encoded in such a way that it can be reproduced later , without the presence of the original vibrating matter.

7. process It is the interference pattern that is imprinted on the recording medium. The interference can be consider as the encoded version of the scene/object. This missing key is provided later by shining laser, identical to the one used to record the hologram, onto the developed film. When this beam illuminates the hologram, it is diffracted by the hologram’s surface pattern. This produces a light field which is similar to the one originally produced by the scene/object and scattered onto the hologram. The image produces an effect in a person’s retina is called Virtual image. .

8. Holography vs photography Holography and Photography have three things in common: They use light energy, They employ a light-sensitive surface, And the result is visible image. Differences from Ordinary Photography: A hologram can be viewed from a range of different angles , as if it were still present. But a photograph can be viewed from one direction. A photograph can be recorded by a normal light sources , but for hologram laser is required to record the object.

9. When a hologram is cut in multiple pieces, the whole scene/object can still be seen in each pieces. But for a photograph it’s not possible . The reproduced viewing range of a hologram adds many more depth perception cues that were present in the original scene/object. But a photograph lacks in depth perception.

10. Working of Camera Working of Hologram

11. Hologram classification Reflection Holograms Volume hologram Transmission Holograms Rainbow Holograms Multi-image Holograms Holographic Stereograms Holographic movies

12. Applications Art Data Storage Dynamic Holography Holographic interferometry Interferometric microscopy Sensors and Bisensors Security

13. Holography in fiction Often used as plot device in Science fiction. In science fiction books Live-action films Live-action television series Cartoon films Video games

14. Conculsion 3-Dimensional Holographic projections is the new wave of technology that will change how we view things in the new era. It will have tremendous effects on all fields of life. Holographic technology and spectral imagining has endless applications, as far as human mind can imagine.