Holographic Image Display

Contents

Overview

Background

Source

Different Types of 3D displays

  1. Computer graphics: Using camera a sequence of images is generated.
  2. Fringe computation: 3-D description scene is converted into a holographic fringe using interference or diffraction approach.
  3. Optical modulation: Optical, in which light is modulated by the fringe using SLM and optical lens.

Existing Technologies in 3D Display Space:

Technology Functionality Disadvantages
Stereoscopic display systems Using a stereo input image pair to display 3D images. 1. Images to be observed by left and right eyes are separately projected onto eyes
2.Viewer is required to wear special glasses such as anaglyphs, polarized or shutter glasses for separated reception of the left and right images on the eyes.
3. Only an observer can see a display target object three-dimensionally
4.Causes distortion in the scale of an image with changes in viewing distance.
5.Binocular parallax produces eye strain ie binocular parallax and the focus adjustment cannot be realized exactly
6.Causes Eye fatigue and Dizziness
Auto-stereoscopic three-dimensional display technology- Optical elements such as lenticular sheets or parallax barriers are attached to display panels and they collect the left and right images displayed on the panel. Use a series of fine vertical bars or lenses to direct the two images correctly to each eye. 1.Causes Eye fatigue and Dizziness
2.Lenticular sheets or parallax barriers are attached to display panels and they collect the left and right images displayed on the panel
Conventional Holography OR Conventional optical elements Recording a hologram of a real object using some wave interference between two laser beams with a high degree of coherence between them in a dark room. 1. System must be kept very stable since even a very slight movement can destroy the interference fringes, in which both intensity and phase information of the 3D object are contained.
2. Device will be heavy and will have alignment and packaging issues.
Real-time holography Used for displaying holographic images in real time 1.Substantial communication bandwidth
2.Producing a different image for right and left eye
Computer-generated hologram (CGH) Digital hologram generated by computing the interference pattern produced by the object and the reference waves. Computer generated holography (e.g., using computer generated holograms) can be used to convert 3D information to 2D for sending and receiving using existing communication networks. 1. High cost makes them impractical for many applications.
2.Packaging and alignment issues
3.Difficult to be implemented in smaller displays

3D Holographic display considerations:



MHOE Technology

Prototype-MHOE


IP Validation

SNo Search string-(1836-Till date)
1
Full Text: ((holographic*2 ADJ three ADJ dimensional ADJ image) AND display) AND (holographic*2 ADJ optical ADJ element)
2
Full Text: ((holographic*2 ADJ three ADJ dimensional ADJ image) AND display)
3
Full Text: (laser ADJ source) AND (spatial ADJ filter) AND (collimator) AND (optical ADJ lens) AND (HOE OR MHOE OR (micro ADJ holographic ADJ optical ADJ element) OR (holographic ADJ optical ADJ element)) AND (Spatial ADJ light ADJ modulator)
4
Full Text: (HOE OR MHOE OR (micro ADJ holographic ADJ optical ADJ element)) OR (holographic ADJ optical ADJ element)) AND (Spatial ADJ light ADJ modulator)
5
Title, Abstract and Claims: ((((Three OR 3) AND dimensional) OR (3 adj D)) AND (hologram OR holographic) AND image AND display) AND (HOE OR (holographic ADJ optical ADJ element))
6
Title and Abstract: ((((Three OR 3) AND dimensional) OR (3 adj D)) AND (hologram OR holographic) AND image AND display)


Patent Analysis

Executive summary

Novelty:

Technological advantages:

Limitations

Reference

Applications

Market Valuation:

Market Predictions


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