Micro-lens sheet and projection screen

Details Micro-lens sheet and projection screen Micro-lens sheet and projection screen

2005-11-29

2005-11-29

Mahoney, Christopher (Department: 2851)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

C359S626000

Reexamination Certificate

active

06970288

ABSTRACT:
In order to provide a micro-lens sheet in which unit lenses are disposed in highly accurate pitch so as to control the light diffusing characteristics of the light emission direction not only in a horizontal direction but also over 360 degrees by using the lens function of one piece of lens sheet, a micro-lens sheet has a micro-lens array section in which unit lenses are disposed in approximate matrix in a second dimensional manner on at least one surface of a base board, and the micro-lens array section is formed on only one surface of the base board, the micro-lens array section includes the unit lens having an aspherical shape, and disposition pitch of neighboring unit lenses is 200 μm or shorter.

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Canadian Office Action issued Jul. 13, 2005 in corresponding Canadian Application No. 2,417,925.

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