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A lens structure for an autostereoscopic display device

A technology of autostereoscopic display and lens structure, applied in the direction of lens, stereo system, optics, etc., can solve the problems of reducing 3D impression, view overlapping, etc.

Inactive Publication Date: 2009-10-21
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large focus size is undesirable as it causes excessive overlap between views and thus reduces the 3D impression
[0012] Another disadvantage of using cylindrical lenticular elements is that vertical lines (perpendicular to the plane of Figure 2) may be imaged as curved lines

Method used

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  • A lens structure for an autostereoscopic display device
  • A lens structure for an autostereoscopic display device
  • A lens structure for an autostereoscopic display device

Examples

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Embodiment Construction

[0043] The present invention provides a lenticular structure for a display device comprising a lenticular arrangement having an array of parallel lenticular elements. The lenticular device comprises a birefringent layer whose extraordinary axis is not substantially parallel to the elongated axis of the lenticular element, but is preferably at an angle between 30° and 90°. This makes the focusing function dependent on the angle of incidence of the light, and this can be used to significantly reduce blurring effects present at large viewing angles.

[0044] Figure 4It is a schematic cross-sectional view of an autostereoscopic display device 40 according to an embodiment of the present invention. The autostereoscopic display device 40 includes a two-dimensional liquid crystal display panel 42 for producing the display. The construction of the liquid crystal display panel 42 is entirely conventional.

[0045] In a similar manner to known autostereoscopic display devices (as de...

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PUM

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Abstract

A lens structure for a display device comprises a lenticular arrangement, the lenticular arrangement comprising an array of parallel lenticular elements and comprising a birefringent layer. The extraordinary axis of the birefringent layer is arranged to be substantially at an angle between 30 DEG and 90 DEG with the elongate axis of the lenticular elements.

Description

technical field [0001] The present invention relates to lens structures for display devices, and more particularly, to lens structures for autostereoscopic display devices. Background technique [0002] figure 1 A known autostereoscopic display device is shown in . This known device 1 comprises a two-dimensional liquid crystal display panel 3 having an array of rows and columns of display pixels 5, which acts as a spatial light modulator producing the display. For clarity, figure 1 Only a small number of display pixels 5 are shown in . In practice, the display panel 3 may comprise approximately one thousand rows and columns of display pixels 5 . [0003] The structure of the liquid crystal display panel 3 is entirely conventional. In particular, panel 3 comprises a pair of spaced apart transparent glass substrates between which an aligned twisted nematic or other liquid crystal material is provided. These substrates carry transparent indium tin oxide (ITO) electrode pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/00G02B5/30G02B27/22H04N13/00G02B30/27
CPCH04N13/0404G02B5/3083G02B27/2214G02B3/005H04N13/305G02B30/27
Inventor D·K·G·德博尔O·H·威廉森S·T·德兹沃特A·J·范达尔夫森
Owner KONINK PHILIPS ELECTRONICS NV