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US20030112521: Optical film with variable angle prisms

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Filing Information

Inventor(s) Sanford Cobb · Kenneth Epstein · Wade Kretman · Mark Gardiner ·
Assignee(s) 3M ·
Correspondent MARSHALL, GERSTEIN & BORUN ·
Application Number US10353888
Filing date 01/29/2003
Publication date 06/19/2003
Predicted expiration date 10/08/2019
U.S. Classifications 359/619  ·
International Classifications G02B027/10  ·
Kind CodeA1
Related U.S. Application DataRELATED APPLICATIONS
0001 This application is a continuation of application Ser. No. 10/047,872, filed Jan. 16, 2002, which is a continuation of application Ser. No. 09/415,873, filed Oct. 8, 1999, now U.S. Pat. No. 6,356,391.
18 Claims, 6 Drawings


Abstract

An optical turning film has a first surface including an array of prisms. The array has a plurality of first prisms, with each of the first prisms having a first prism configuration, and a plurality of second prisms, with each of the second prisms having a second prism configuration different from the first prism configuration. The optical film also has a second surface opposing the first surface, and light rays incident to the first surface are directed by the plurality of first prism and the plurality of second prisms along a direction substantially parallel to a viewing axis.

Independent Claims | See all claims (18)

  1. 1. An optical turning film comprising: a first surface; an array of prisms formed in the first surface, wherein the array of prisms has: a plurality of first prisms, each of the first prisms having a first prism angular orientation with respect to a normal to the first surface; a plurality of second prisms, each of the second prisms having a second prism angular orientation, different from the first angular orientation, with respect to the normal; and a second surface opposing the first surface.
  2. 14. An optical turning film comprising: a first surface; an array or prisms formed in the first surface, wherein the array of prisms has: a plurality of first prisms, each of the first prisms having a first prisms reflecting surface and a first prisms refracting surface and a first prism included angle between the first prisms reflecting surface and the first prisms refracting surface; a plurality of second prisms, each of the second prisms having a second prisms reflecting surface and a second prisms refracting surface and a second prisms included angle between the first prisms reflecting surface and the first prisms refracting surface, different than the first prisms included angle; and a second surface opposing the first surface.

References Cited

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Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
US8367186 --
US8517573 --
US7350441 3M Innovative Properties Company Alan B. Campbell et al. Apr 2008
US7628100 3M Innovative Properties Company Mark E. Gardiner et al. Dec 2009
US7328638 3M Innovative Properties Company Mark E. Gardiner et al. Feb 2008
US7395742 3M Innovative Properties Company Dale L. Ehnes et al. Jul 2008
US7350442 3M Innovative Properties Company Dale L. Ehnes et al. Apr 2008
US7618164 Ubright Optronics Corporation Kong-Hua Wang et al. Nov 2009
US7395741 3M Innovative Properties Company Alan B. Campbell et al. Jul 2008
US7487701 3M Innovative Properties Company Alan B. Campbell et al. Feb 2009
US7290471 3M Innovative Properties Company Dale L. Ehnes et al. Nov 2007
US7303322 3M Innovative Properties Company David J. Lamb et al. Dec 2007
US7398715 3M Innovative Properties Company Dale L. Ehnes et al. Jul 2008
US7293487 3M Innovative Properties Company Alan B. Campbell et al. Nov 2007
US7883647 Ubright Optronics Corporation Kong-Hua Wang et al. Feb 2011
US7669508 3M Innovative Properties Company Mark E. Gardiner et al. Mar 2010
US7675682 LG Electronics Inc. Seoungho Lee et al. Mar 2010
US7677146 3M Innovative Properties Company Mark E. Gardiner et al. Mar 2010
US7712944 Ubright Optronics Corporation Kong-Hua Wang et al. May 2010
US7852570 3M Innovative Properties Company Mark E. Gardiner et al. Dec 2010
US8025934 3M Innovative Properties Company Clinton L. Jones et al. Sep 2011
US8034421 3M Innovative Properties Company Clinton L. Jones et al. Oct 2011
US8241755 3M Innovative Properties Company Clinton L. Jones et al. Aug 2012

Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
US20030112521 3M Sanford Cobb et al. Jun 2003
US6707611 3M Innovative Properties Company Mark E. Gardiner et al. Mar 2004