Apparatus and method for displaying a video image

A hologram and equipment technology, applied in the characteristics of hologram objects, properties/attributes of holograms, hologram optical components, etc., can solve the problems that real-time applications cannot be used, and the image quality is not enough for display applications, etc., to achieve Improved noise reduction technology, improved display efficiency, and small light loss effects

Inactive Publication Date: 2007-09-12
CAMBRIDGE ENTERPRISE LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the computational complexity of current holographic generation algorithms prevents them from being used in real-time applications
Also, even though existing algorithms are fast enough, the quality of the images produced by them is not good enough for display applications

Method used

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  • Apparatus and method for displaying a video image
  • Apparatus and method for displaying a video image
  • Apparatus and method for displaying a video image

Examples

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Embodiment Construction

[0022] In the following description, the same reference numerals are used to denote the same components in the respective drawings.

[0023] In general, the present application relates to an apparatus for projecting video images from computer-generated phase-only holograms, commonly known as kinoforms. The kinoforms must be able to be reconstructed rapidly so that they can be displayed on pixelated liquid crystal on silicon (LCOS) spatial light modulators that have been constructed to operate efficiently as phase-only modulators. The LCOS phase-only SLM is illuminated by a suitably expanded beam from a partially coherent light source (e.g., a laser or a superluminescent light-emitting diode, LED), and the phase-only kinoform is converted into a real intensity image in the far field. ). This far field can be brought closer using a projection lens for Fourier transformation. By using fast hardware-based processors (such as FFT, FPGA, and DS processors), and by, for example, us...

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Abstract

A method of displaying a video image comprises receiving sequential image frames at a processor. Each image frame is processed to obtain a kinoform. A programmable diffractive element such as an SLM represents the sequence of kinoforms allowing reproduction of the image using a suitable illumination beam.A method of displaying a video image comprises receiving sequential image frames at a processor. Each image frame is processed to obtain a kinoform. A programmable diffractive element such as an SLM (206) represents the sequence of kinoforms allowing reproduction (208) of the image using a suitable illumination beam (200, 202).

Description

[0001] This application is a divisional application of an invention patent application with an application date of December 15, 2004, an application number of 200480041744.2, and an invention title of "equipment and method for displaying holographic video image sequences". technical field [0002] The present invention relates to a device and a method for displaying video images, for example using holography. Background technique [0003] Various devices are known for displaying images using holography, for example using computer holography (CGH). One of these known devices is described in US6437919, in which an electrically addressable spatial light modulator (SLM) is addressed to provide a 3D holographic representation of an image. Thus, when the SLM is illuminated by a suitable illumination source, the image is reconstructed in the playback field (RPF). [0004] The problem with existing projection displays, such as holographic displays, is that light efficiency is low, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03H1/22G03H1/00G03H1/08G03H1/32
CPCG03H2226/02G03H2001/2231G03H2223/13G03H2225/52G03H2210/454G03H2001/2297G03H1/2249G03H1/2294G03H2001/0816G03H2225/25G03H2001/306G03H2225/60G03H2210/40G03H2210/20G03H1/0841G03H2240/41G03H2225/61G03H1/0808G03H2225/55G03H2225/32G03H2001/261G03H1/2205G03H2223/55G03H2001/2218G03H2222/35G03H2225/31G03H2001/085G03H2210/30G03H2001/2271G03H2001/2255G03H2240/42G03H1/08G03H2240/51G03H2001/2215G03H1/2286G03H1/00G03H1/22G03H1/2645
Inventor 威廉·克罗斯兰尼尔·科林斯爱德华·巴克利阿德里安·凯布尔尼古拉斯·劳伦斯彼得·马什蒂莫西·威尔金森
Owner CAMBRIDGE ENTERPRISE LTD
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