MICRO-LENS ARRAY BASED LIGHT TRANSMISSION SCREEN

WIPO Patent Application WO2004111915

A3

A light-transmission screen includes a diffusing element formed from a micro-lens array for projecting images in a viewing space. The screen generates images of improved quality by varying structural features of one or more lenses in the array so that light is directed in different directions and/or with different optical properties compared with other lenses in the array. The structural features which are varied include any one or more of size, shape, curvature, or spacing of the lenses in the array. As a result of these variations, the screen achieves wider viewing angles, improved screen resolution and gain, and a greater ability to reduce or eliminate aliasing or other artifacts in the generated images compared with conventional screens. A method for making a light-transmission screen of this type preferably forms the micro-lens array using a stamping operation based on a master. By taking this approach, the screen is manufactured with fewer process steps and at less cost compared with conventional methods.

REED DAVID (US)
FREESE ROBERT P (US)
WALKER DALE S (US)

PCT/US2004/017450

June 02, 2005

June 02, 2004

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BRIGHT VIEW TECHNOLOGIES INC (US)
REED DAVID (US)
FREESE ROBERT P (US)
WALKER DALE S (US)

G02B3/00; G02B5/00; G03B21/60; G03B21/62; (IPC1-7): G03B21/56; G03B21/60

US6335828B1	2002-01-01
US6317263B1	2001-11-13
US1942841A	1934-01-09
US3893748A	1975-07-08
US5870224A	1999-02-09
US6700702B2	2004-03-02

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